#27 Added handler for received messages

# Conflicts:
#	Discord Media Loader.Application/Classes/Core.cs
#	Discord Media Loader.Application/Classes/JobScheduler.cs
#	Discord Media Loader.Application/Classes/Settings.cs

Discord Media Loader.Application/Classes/JobScheduler.cs

@@ -1,305 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Net;
-using System.Threading.Tasks;
-using Discord;
-using Discord.WebSocket;
-using DML.Application.Classes;
-using SweetLib.Utils;
-using SweetLib.Utils.Extensions;
-using SweetLib.Utils.Logger;
-
-namespace DML.AppCore.Classes
-{
-    public class JobScheduler
-    {
-        private ulong messageScanned = 0;
-        private ulong totalAttachments = 0;
-        private ulong attachmentsDownloaded = 0;
-
-        private bool Run { get; set; } = false;
-        public List<Job> JobList { get; set; } = new List<Job>();
-        public Dictionary<int, Queue<IMessage>> RunningJobs = new Dictionary<int, Queue<IMessage>>();
-        internal int RunningThreads { get; set; } = 0;
-
-        internal ulong MessagesScanned
-        {
-            get
-            {
-                lock (this)
-                {
-                    return messageScanned;
-                }
-            }
-            set
-            {
-                lock (this)
-                {
-                    messageScanned = value;
-                }
-            }
-        }
-
-        internal ulong TotalAttachments
-        {
-            get
-            {
-                lock (this)
-                {
-                    return totalAttachments;
-                }
-            }
-            set
-            {
-                lock (this)
-                {
-                    totalAttachments = value;
-                }
-            }
-        }
-
-        internal ulong AttachmentsDownloaded
-        {
-            get
-            {
-                lock (this)
-                {
-                    return attachmentsDownloaded;
-                }
-            }
-            set
-            {
-                lock (this)
-                {
-                    attachmentsDownloaded = value;
-                }
-            }
-        }
-
-        public void Stop()
-        {
-            Run = false;
-        }
-
-        public void Start()
-        {
-            Run = true;
-
-            Task.Run(async () =>
-            {
-                Logger.Info("Started JobScheduler...");
-                while (Run)
-                {
-                    try
-                    {
-                        Logger.Debug("Entering job list handler loop...");
-                        //foreach (var job in JobList)
-                        for (var i = JobList.Count - 1; i >= 0; i--)
-                        {
-                            var job = JobList[i];
-                            Logger.Debug($"Checking job {job}");
-                            var hasJob = false;
-
-                            Logger.Trace("Locking scheduler...");
-                            lock (this)
-                            {
-                                Logger.Trace("Checking if job is already performed...");
-                                hasJob = RunningJobs.ContainsKey(job.Id);
-                            }
-                            Logger.Trace("Unlocked scheduler.");
-
-                            if (!hasJob)
-                            {
-                                Logger.Debug("Job is not performed yet...Performing job...");
-                                var queue = new Queue<IMessage>();
-
-                                Logger.Trace("Locking scheduler...");
-                                lock (this)
-                                {
-                                    Logger.Trace("Adding job to running jobs.");
-                                    RunningJobs.Add(job.Id, queue);
-                                }
-                                Logger.Trace("Unlocked scheduler.");
-
-                                Logger.Trace("Issuing job message scan...");
-                                var messages = await job.Scan();
-
-                                if (messages == null)
-                                    continue;
-
-                                Logger.Trace($"Adding {messages.Count} messages to queue...");
-                                foreach (var msg in messages)
-                                {
-                                    queue.Enqueue(msg);
-                                }
-                                Logger.Trace($"Added {queue.Count} messages to queue.");
-
-                                if (messages.Count != queue.Count)
-                                    Logger.Warn("Not all messages have been added into the queue.");
-
-                                var startedDownload = false;
-
-                                while (!startedDownload)
-                                {
-                                    Logger.Debug("Entering loop to check thread availability");
-                                    Logger.Trace("Locking scheduler...");
-                                    lock (this)
-                                    {
-                                        Logger.Trace(
-                                            $"Checking thread limit. Running: {RunningThreads}, Max: {Core.Settings.ThreadLimit}");
-                                        if (RunningThreads >= Core.Settings.ThreadLimit)
-                                            continue;
-
-                                        RunningThreads++;
-                                        startedDownload = true;
-                                    }
-                                    Logger.Trace("Unlocked scheduler.");
-                                }
-
-                                Logger.Trace("Start downloading job async.");
-                                Task.Run(() => WorkQueue(job.Id)); // do not await to work parallel
-                            }
-                        }
-                    }
-                    catch (Exception ex)
-                    {
-                        Logger.Error(ex.Message);
-                    }
-                }
-            });
-        }
-
-        private void WorkQueue(int jobId)
-        {
-            try
-            {
-                Logger.Debug("Beginning job download...");
-                Logger.Trace("Finding job...");
-                var job = (from j in JobList where j.Id == jobId select j).FirstOrDefault();
-
-                if (job == null)
-                {
-                    Logger.Warn($"Associating job not found! JobId: {jobId}");
-                    return;
-                }
-                Logger.Trace("Found job.");
-
-                Queue<IMessage> queue;
-                Logger.Trace("Locking scheduler...");
-                lock (this)
-                {
-                    Logger.Trace("Finiding queue...");
-                    if (!RunningJobs.TryGetValue(jobId, out queue))
-                    {
-                        Logger.Warn($"Queue for job {jobId} not found!");
-                        return;
-                    }
-                    Logger.Trace("Queue found.");
-                }
-                Logger.Trace("Unlocked scheduler.");
-
-                Logger.Debug($"Messages to process for job {jobId}: {queue.Count}");
-                while (queue.Count > 0)
-                {
-                    Logger.Trace("Locking scheduler...");
-                    lock (this)
-                    {
-                        Logger.Trace("Checking if still a job...");
-                        if (!RunningJobs.ContainsKey(jobId))
-                        {
-                            Logger.Warn($"Queue for job {jobId} not found!");
-                            return;
-                        }
-                        Logger.Trace("Continue working...");
-                    }
-                    Logger.Trace("Unlocked scheduler.");
-
-                    Logger.Trace("Dequeueing message...");
-                    var message = queue.Dequeue();
-
-                    Logger.Debug($"Attachments for message {message.Id}: {message.Attachments.Count}");
-                    foreach (var a in message.Attachments)
-                    {
-                        try
-                        {
-                            var fileName = Path.Combine(Core.Settings.OperatingFolder, Core.Settings.FileNameScheme);
-
-                            Logger.Trace("Replacing filename placeholders...");
-
-                            var extensionRequired = !fileName.EndsWith("%name%");
-
-                            var serverName = "unknown";
-
-                            var socketTextChannel = message.Channel as SocketTextChannel;
-                            if (socketTextChannel != null)
-                            {
-                                serverName = socketTextChannel.Guild.Name;
-                                serverName = Path.GetInvalidFileNameChars().Aggregate(serverName, (current, c) => current.Replace(c, ' '));
-                            }
-
-                            var channelName = message.Channel.Name;
-                            channelName = Path.GetInvalidFileNameChars().Aggregate(channelName, (current, c) => current.Replace(c, ' '));
-
-                            fileName =
-                                fileName.Replace("%guild%", serverName)
-                                    .Replace("%channel%", channelName)
-                                    .Replace("%timestamp%", message.CreatedAt.UtcDateTime.ToUnixTimeStamp().ToString())
-                                    .Replace("%name%", a.Filename)
-                                    .Replace("%id%", a.Id.ToString());
-                            
-                            if (extensionRequired)
-                                fileName += Path.GetExtension(a.Filename);
-
-                            Logger.Trace($"Detemined file name: {fileName}.");
-
-
-                            if (File.Exists(fileName) && new FileInfo(fileName).Length == a.Size)
-                            {
-                                Logger.Debug($"{fileName} already existing with its estimated size. Skipping...");
-                                continue;
-                            }
-
-                            Logger.Trace("Determining directory...");
-                            var fileDirectory = Path.GetDirectoryName(fileName);
-
-                            if (!Directory.Exists(fileDirectory))
-                            {
-                                Logger.Info($"Directory {fileDirectory} does not exist. Creating directory...");
-                                Directory.CreateDirectory(fileDirectory);
-                                Logger.Debug("Created directory.");
-                            }
-
-                            var wc = new WebClient();
-                            Logger.Debug($"Starting downloading of attachment {a.Id}...");
-
-                            wc.DownloadFile(new Uri(a.Url), fileName);
-                            Logger.Debug($"Downloaded attachment {a.Id}.");
-
-                            Logger.Trace("Updating known timestamp for job...");
-                            job.KnownTimestamp = message.CreatedAt.UtcDateTime.ToUnixTimeStamp();
-                            job.Store();
-                        }
-                        finally
-                        {
-                            AttachmentsDownloaded++;
-                        }
-                    }
-                }
-            }
-            finally
-            {
-                Logger.Trace("Locking scheduler...");
-                lock (this)
-                {
-                    Logger.Trace($"Removing {jobId} from running jobs...");
-                    RunningJobs.Remove(jobId);
-                    Logger.Trace("Decreasing thread count...");
-                    RunningThreads--;
-                }
-                Logger.Trace("Unlocked scheduler.");
-            }
-        }
-    }
-}

Discord Media Loader.Application/FrmInternalSplash.cs

@@ -1,12 +0,0 @@
-using System.Windows.Forms;
-
-namespace DML.Application
-{
-    public partial class FrmInternalSplash : Form
-    {
-        public FrmInternalSplash()
-        {
-            InitializeComponent();
-        }
-    }
-}

Discord Media Loader.Application/Helper/IdentifiedString.cs

@@ -1,22 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DML.Application.Helper
-{
-    internal class IdentifiedString<T>
-    {
-        internal T Id { get; set; }
-        internal string Caption { get; set; }
-        
-        internal IdentifiedString(T id, string caption)
-        {
-            Id = id;
-            Caption = caption;
-        }
-
-        public override string ToString() => Caption;
-    }
-}

Discord Media Loader/Program.cs

@@ -1,32 +0,0 @@
-using System;
-using System.Windows.Forms;
-using DML.Application.Classes;
-using Nito.AsyncEx;
-
-namespace Discord_Media_Loader
-{
-    static class Program
-    {
-        [STAThread]
-        static void Main(string[] paramStrings)
-        {
-            Application.EnableVisualStyles();
-            Application.SetCompatibleTextRenderingDefault(false);
-
-            var splashScreen = new FrmSplash();
-            if (splashScreen.ShowDialog() == DialogResult.OK)
-            {
-               DoLaunch(paramStrings);
-            }
-            else
-            {
-                Application.Restart();
-            }
-        }
-
-        private static void DoLaunch(string[] paramStrings)
-        {
-            AsyncContext.Run(() => Core.Run(paramStrings));
-        }
-    }
-}

Discord Media Loader/Properties/Settings.Designer.cs

@@ -1,26 +0,0 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     Dieser Code wurde von einem Tool generiert.
-//     Laufzeitversion:4.0.30319.42000
-//
-//     Änderungen an dieser Datei können falsches Verhalten verursachen und gehen verloren, wenn
-//     der Code erneut generiert wird.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-namespace Discord_Media_Loader.Properties {
-    
-    
-    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.1.0.0")]
-    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
-        
-        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
-        
-        public static Settings Default {
-            get {
-                return defaultInstance;
-            }
-        }
-    }
-}

src/DML.Client/DMLClient.cs

@@ -1,4 +1,19 @@
-using System.Threading.Tasks;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Client".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Client" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited DMLClient.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System.Threading.Tasks;
 using Discord;
 using Discord.WebSocket;
 

src/Discord Media Loader.Application/Classes/Job.cs

@@ -1,31 +1,53 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Job.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
 using Discord;
 using Discord.WebSocket;
 using DML.Application.Classes;
 using DML.Client;
-using SweetLib.Utils;
 using SweetLib.Utils.Extensions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
 using static SweetLib.Utils.Logger.Logger;
 
 namespace DML.AppCore.Classes
 {
+    internal enum JobState
+    {
+        Idle,
+        Scanning,
+        Listening
+    }
+
     public class Job
     {
         public int Id { get; set; }
         public ulong GuildId { get; set; }
         public ulong ChannelId { get; set; }
-        public double KnownTimestamp { get; set; } = 0;
-        private double StopTimestamp { get; set; } = 0;
+        public ulong LastMessageId { get; set; } = 0;
         private bool IsValid { get; set; } = true;
+        internal JobState State { get; set; } = JobState.Idle;
+
 
         internal void Store()
         {
             Debug("Storing job to database...");
             Trace("Getting jobs collection...");
-            var jobDb = Core.Database.GetCollection<Job>("jobs");
+            var jobDb = Application.Core.Core.Database.GetCollection<Job>("jobs");
 
             Trace("Adding new value...");
 
@@ -43,7 +65,7 @@ namespace DML.AppCore.Classes
         {
             Debug("Deleting job from database...");
             Trace("Getting jobs collection...");
-            var jobDb = Core.Database.GetCollection<Job>("jobs");
+            var jobDb = Application.Core.Core.Database.GetCollection<Job>("jobs");
 
             Trace("Deleting value...");
             jobDb.Delete(Id);
@@ -61,115 +83,96 @@ namespace DML.AppCore.Classes
             return (from c in server.TextChannels where c.Id == id select c).FirstOrDefault();
         }
 
-        internal async Task<List<IMessage>> Scan()
+        /// <summary>
+        /// Performs scanning task of the job.
+        /// </summary>
+        /// <returns>Returns true if the newest messages have been scanned.</returns>
+        internal async Task<bool> Scan()
         {
             Debug($"Starting scan of guild {GuildId} channel {ChannelId}...");
             var result = new List<IMessage>();
+            const ushort limit = 100;
+            State = JobState.Scanning;
 
-            var limit = 100;
-            var lastId = ulong.MaxValue;
-            var isFirst = true;
             var finished = false;
+            var scanStartTimeStamp = DateTime.UtcNow;
 
             var guild = FindServerById(GuildId);
             var channel = FindChannelById(guild, ChannelId);
 
             Debug("Checking channel access");
-            //channel.GetUser(channel.Guild.CurrentUser.Id);
             if (channel.GetUser(channel.Guild.CurrentUser.Id) == null)
             {
                 Info("Skipping channel without access");
-                return result;
+                return true;
             }
 
-            if (Math.Abs(StopTimestamp) < 0.4)
-                StopTimestamp = KnownTimestamp;
             Trace("Initialized scanning parameters.");
-
             while (!finished)
             {
                 Trace("Entering scanning loop...");
                 var messages = new List<IMessage>();
 
                 Trace($"Downloading next {limit} messages...");
-                if (isFirst)
-                {
-                    //messages = await channel.GetMessagesAsync(limit).ToArray() as SocketMessage[];
-                    var realMessages = await channel.GetMessagesAsync(limit).ToArray();
-
-                    foreach (var realMessageArray in realMessages)
-                    {
-                        foreach (var realMessage in realMessageArray)
-                        {
-                            messages.Add(realMessage);
-                        }
-                    }
-                }
-                else
-                {
-                    var realMessages = await channel.GetMessagesAsync(lastId, Direction.Before, limit).ToArray();
-
-                    foreach (var realMessageArray in realMessages)
-                    {
-                        foreach (var realMessage in realMessageArray)
-                        {
-                            messages.Add(realMessage);
-                        }
-                    }
-
-                    //messages = await channel.GetMessagesAsync(lastId, Direction.Before, limit).ToArray() as SocketMessage[];
-                }
-                Trace($"Downloaded {messages.Count} messages.");
-
-                isFirst = false;
+                messages.AddRange((await channel.GetMessagesAsync(LastMessageId, Direction.After, limit).ToArray()).SelectMany(collection => collection));
 
+                Debug($"Downloaded {messages.Count} messages.");
+                Trace("Iterating messages...");
                 foreach (var m in messages)
                 {
                     if (!IsValid)
-                        return null;
-
-                    Core.Scheduler.MessagesScanned++;
-
-                    Debug($"Processing message {m.Id}");
-                    if (m.Id < lastId)
                     {
-                        Trace($"Updating lastId ({lastId}) to {m.Id}");
-                        lastId = m.Id;
+                        return false;
                     }
 
-                    if (m.CreatedAt.UtcDateTime.ToUnixTimeStamp() <= StopTimestamp)
+                    Application.Core.Core.Scheduler.MessagesScanned++;
+
+                    Debug($"Processing message {m.Id}");
+                    if (m.Id > LastMessageId)
                     {
-                        Debug("Found a message with a known timestamp...Stopping scan.");
-                        finished = true;
-                        continue;
+                        Trace($"Updating lastId ({LastMessageId}) to {m.Id}");
+                        LastMessageId = m.Id;
                     }
 
                     Trace($"Message {m.Id} has {m.Attachments.Count} attachments.");
                     if (m.Attachments.Count > 0)
                     {
                         result.Add(m);
-                        Core.Scheduler.TotalAttachments += (ulong)m.Attachments.Count;
+                        Application.Core.Core.Scheduler.TotalAttachments += (ulong)m.Attachments.Count;
                         Trace($"Added message {m.Id}");
                     }
                     Debug($"Finished message {m.Id}");
                 }
 
-                finished = finished || messages.Count < limit;
+                finished = messages.Count < limit;
             }
+
             Trace($"Downloaded all messages for guild {GuildId} channel {ChannelId}.");
 
             Trace("Sorting messages...");
             result.Sort((a, b) => DateTime.Compare(a.CreatedAt.UtcDateTime, b.CreatedAt.UtcDateTime));
 
-            if (result.Count > 0)
+            foreach (var message in result)
             {
-                Trace("Updating StopTimestamp for next scan...");
-                StopTimestamp = result[result.Count - 1].CreatedAt.UtcDateTime.ToUnixTimeStamp();
+                foreach (var attachment in message.Attachments)
+                {
+                    var mediaData = new MediaData
+                    {
+                        Id = attachment.Id,
+                        GuildId = (message.Channel as SocketTextChannel)?.Guild?.Id ?? 0,
+                        ChannelId = message.Channel.Id,
+                        DownloadSource = attachment.Url,
+                        Filename = attachment.Filename,
+                        TimeStamp = message.CreatedAt.UtcDateTime.ToUnixTimeStamp(),
+                        FileSize = attachment.Size
+                    };
+                    mediaData.Store();
+                }
             }
+           
 
             Debug($"Fisnished scan of guild {GuildId} channel {ChannelId}.");
-
-            return result;
+            return true;
         }
 
         public void Stop()
@@ -181,7 +184,7 @@ namespace DML.AppCore.Classes
         {
             Debug("Restoring jobs...");
             Trace("Getting jobs collection...");
-            var jobDb = Core.Database.GetCollection<Job>("jobs");
+            var jobDb = Application.Core.Core.Database.GetCollection<Job>("jobs");
 
             Trace("Creating new empty job list");
             return jobDb.FindAll();

src/Discord Media Loader.Application/Classes/JobScheduler.cs

@@ -0,0 +1,172 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited JobScheduler.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using Discord;
+using Discord.WebSocket;
+using DML.AppCore.Classes;
+using SweetLib.Utils.Extensions;
+using SweetLib.Utils.Logger;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace DML.Application.Classes
+{
+    public class JobScheduler
+    {
+        private ulong messageScanned = 0;
+        private ulong totalAttachments = 0;
+        private ulong attachmentsDownloaded = 0;
+
+        private bool Run { get; set; } = false;
+        public List<Job> JobList { get; set; } = new List<Job>();
+        public Dictionary<int, Queue<IMessage>> RunningJobs { get; } = new Dictionary<int, Queue<IMessage>>();
+        internal int RunningThreads { get; set; } = 0;
+        internal Task SchedulerTask { get; private set; }
+        internal Task DownloadTask { get; private set; }
+
+        internal ulong MessagesScanned
+        {
+            get
+            {
+                lock (this)
+                {
+                    return messageScanned;
+                }
+            }
+            set
+            {
+                lock (this)
+                {
+                    messageScanned = value;
+                }
+            }
+        }
+
+        internal ulong TotalAttachments
+        {
+            get
+            {
+                lock (this)
+                {
+                    return totalAttachments;
+                }
+            }
+            set
+            {
+                lock (this)
+                {
+                    totalAttachments = value;
+                }
+            }
+        }
+
+        internal ulong AttachmentsDownloaded
+        {
+            get
+            {
+                lock (this)
+                {
+                    return attachmentsDownloaded;
+                }
+            }
+            set
+            {
+                lock (this)
+                {
+                    attachmentsDownloaded = value;
+                }
+            }
+        }
+
+        public void StartScheduler()
+        {
+            Logger.Info("Starting scheduler jobs");
+            SchedulerTask = Task.Run(() =>
+            {
+                PerformSchedulerTask();
+            });
+
+            DownloadTask = Task.Run(() =>
+            {
+                PerformDownloads();
+            });
+        }
+
+        public void Stop()
+        {
+            Run = false;
+        }
+
+        private async void PerformSchedulerTask()
+        {
+            Logger.Trace("SchedulerTask started");
+            foreach (var job in JobList)
+            {
+                if (job.State == JobState.Idle)
+                {
+                    // scan all old messages first
+                    Logger.Debug($"Starting scan for job {job.Id}");
+                    await job.Scan();
+                    job.State = JobState.Listening; // set to listening now
+                    Logger.Debug($"Scan for job {job.Id} finished");
+                }
+            }
+            Logger.Trace("All jobs have been scanned");
+        }
+
+        private async void PerformDownloads()
+        {
+            Logger.Trace("SchedulerTask started");
+            // TODO 
+        }
+
+        public Task HandleMessageReceived(SocketMessage msg)
+        {
+            Logger.Trace($"Received message: Id: {msg.Id}, Channel: {msg.Channel.Id}, Attachments: {msg.Attachments.Count}");
+
+            if (msg.Attachments.Count > 0)
+            {
+                foreach (var job in JobList)
+                {
+                    if (job.State != JobState.Listening || job.ChannelId != msg.Channel.Id)
+                    {
+                        continue;
+                    }
+
+                    Logger.Debug($"Job found [{job.Id}]");
+                    foreach (var attachment in msg.Attachments)
+                    {
+                        var mediaData = new MediaData
+                        {
+                            Id = attachment.Id,
+                            GuildId = (msg.Channel as SocketTextChannel)?.Guild?.Id ?? 0,
+                            ChannelId = msg.Channel.Id,
+                            DownloadSource = attachment.Url,
+                            Filename = attachment.Filename,
+                            TimeStamp = msg.CreatedAt.UtcDateTime.ToUnixTimeStamp(),
+                            FileSize = attachment.Size
+                        };
+                        mediaData.Store();
+                    }
+
+                    job.LastMessageId = msg.Id;
+                    job.Store();
+                }
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}

src/Discord Media Loader.Application/Classes/MediaData.cs

@@ -0,0 +1,112 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited MediaData.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using DML.Client;
+using SweetLib.Utils.Logger;
+using System;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Threading.Tasks;
+using static SweetLib.Utils.Logger.Logger;
+
+namespace DML.Application.Classes
+{
+    public class MediaData
+    {
+        public ulong Id { get; set; }
+        public string DownloadSource { get; set; }
+        public ulong GuildId { get; set; }
+        public ulong ChannelId { get; set; }
+        public double TimeStamp { get; set; }
+        public string Filename { get; set; }
+        public int FileSize { get; set; }
+
+        internal void Store()
+        {
+            Debug("Storing job to database...");
+            Trace("Getting jobs collection...");
+            var db = Core.Core.Database.GetCollection<MediaData>("media");
+
+            Trace("Adding new value...");
+
+            if (db.Find(x => x.Id == Id).Any())
+            {
+                db.Update(this);
+            }
+            else
+            {
+                db.Insert(this);
+            }
+        }
+
+        internal void Delete()
+        {
+            Debug("Deleting job from database...");
+            Trace("Getting jobs collection...");
+            var db = Core.Core.Database.GetCollection<MediaData>("media");
+
+            Trace("Deleting value...");
+            db.Delete(Id);
+        }
+
+        internal async Task Download()
+        {
+            Trace("Beginning attachment download...");
+
+            Debug("Building filename...");
+            var fileName = Path.Combine(Core.Core.Settings.OperatingFolder, Core.Core.Settings.FileNameScheme);
+
+            Debug($"Base filename: {fileName}");
+
+            Trace("Determining if extension is required");
+            var extensionRequired = !fileName.EndsWith("%name%");
+            Trace($"Extension required: {extensionRequired}");
+
+            Trace("Replacing filename placeholders...");
+            var guildName = DMLClient.Client.GetGuild(GuildId)?.Name ?? GuildId.ToString();
+            var channelName = DMLClient.Client.GetGuild(GuildId)?.GetChannel(ChannelId)?.Name ?? ChannelId.ToString();
+
+            fileName =
+                fileName.Replace("%guild%", guildName)
+                    .Replace("%channel%", channelName)
+                    .Replace("%timestamp%", TimeStamp.ToString("####"))
+                    .Replace("%name%", Filename)
+                    .Replace("%id%", Id.ToString());
+
+            Trace("Adding extension if required");
+            if (extensionRequired)
+            {
+                fileName += Path.GetExtension(Filename);
+            }
+
+            Debug($"Final filename: {fileName}");
+
+            if (File.Exists(fileName) && new FileInfo(fileName).Length == FileSize)
+            {
+                Logger.Debug($"{fileName} already existing with its estimated size. Skipping...");
+                return;
+            }
+
+            var wc = new WebClient();
+            Logger.Debug($"Starting downloading of attachment {Id}...");
+            wc.DownloadFile(new Uri(DownloadSource), fileName);
+            Logger.Debug($"Downloaded attachment {Id}.");
+
+
+            Core.Core.Scheduler.AttachmentsDownloaded++;
+        }
+    }
+}

src/Discord Media Loader.Application/Classes/RPC/DiscordRpc.cs

@@ -0,0 +1,74 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited DiscordRpc.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System.Runtime.InteropServices;
+
+namespace DML.Application.Classes.RPC
+{
+    // https://github.com/discordapp/discord-rpc/blob/master/examples/button-clicker/Assets/DiscordRpc.cs
+    // Give that man a cookie ^.^
+
+    public class DiscordRpc
+    {
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void ReadyCallback();
+
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void DisconnectedCallback(int errorCode, string message);
+
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        public delegate void ErrorCallback(int errorCode, string message);
+
+        public struct EventHandlers
+        {
+            public ReadyCallback readyCallback;
+            public DisconnectedCallback disconnectedCallback;
+            public ErrorCallback errorCallback;
+        }
+
+        // Values explanation and example: https://discordapp.com/developers/docs/rich-presence/how-to#updating-presence-update-presence-payload-fields
+        [System.Serializable]
+        public struct RichPresence
+        {
+            public string state; /* max 128 bytes */
+            public string details; /* max 128 bytes */
+            public long startTimestamp;
+            public long endTimestamp;
+            public string largeImageKey; /* max 32 bytes */
+            public string largeImageText; /* max 128 bytes */
+            public string smallImageKey; /* max 32 bytes */
+            public string smallImageText; /* max 128 bytes */
+            public string partyId; /* max 128 bytes */
+            public int partySize;
+            public int partyMax;
+            public string matchSecret; /* max 128 bytes */
+            public string joinSecret; /* max 128 bytes */
+            public string spectateSecret; /* max 128 bytes */
+            public bool instance;
+        }
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_Initialize", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void Initialize(string applicationId, ref EventHandlers handlers, bool autoRegister, string optionalSteamId);
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_UpdatePresence", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void UpdatePresence(ref RichPresence presence);
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_RunCallbacks", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void RunCallbacks();
+
+        [DllImport(RpcWrapper.Dll, EntryPoint = "Discord_Shutdown", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void Shutdown();
+    }
+}

src/Discord Media Loader.Application/Classes/RPC/DiscordRpcHelper.cs

@@ -0,0 +1,31 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited DiscordRpcHelper.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DML.Application.Classes.RPC
+{
+    public static class DiscordRpcHelper
+    {
+        public static long DateTimeToTimestamp(DateTime dt)
+        {
+            return (dt.Ticks - 621355968000000000) / 10000000;
+        }
+    }
+}

src/Discord Media Loader.Application/Classes/RPC/RpcWrapper.cs

@@ -0,0 +1,44 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited RpcWrapper.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace DML.Application.Classes.RPC
+{
+    public class RpcWrapper
+    {
+        public const string Dll = "discord-rpc-win32";
+
+        public RpcWrapper()
+        {
+            if (!File.Exists(Dll + ".dll"))
+            {
+                MessageBox.Show(
+                    "Missing " + Dll + ".dll\n\n" +
+                    "Grab it from the release on GitHub or from the DiscordRpcDemo/lib/ folder in the repo then put it alongside DiscordRpcDemo.exe.\n\n" +
+                    "https://github.com/nostrenz/cshap-discord-rpc-demo"
+                );
+
+                System.Windows.Forms.Application.Exit();
+            }
+        }
+    }
+}

src/Discord Media Loader.Application/Classes/Settings.cs

@@ -1,4 +1,19 @@
-using SweetLib.Utils.Logger;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Settings.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using SweetLib.Utils.Logger;
 
 namespace DML.Application.Classes
 {
@@ -16,11 +31,13 @@ namespace DML.Application.Classes
         public bool SkipExistingFiles { get; set; } = true;
         public int ThreadLimit { get; set; } = 50;
         public bool ShowStartUpHints { get; set; } = true;
+        public bool RescanRequired { get; set; } = false;
+        public bool UseRPC { get; set; } = false;
 
         public void Store()
         {
             Logger.Trace("Getting settings collection...");
-            var settingsDB = Core.Database.GetCollection<Settings>("settings");
+            var settingsDB = Core.Core.Database.GetCollection<Settings>("settings");
 
             Logger.Debug("Storing settings to database...");
 

src/Discord Media Loader.Application/Core/Core.cs

@@ -1,7 +1,24 @@
-using Discord;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Core.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using Discord;
 using Discord.Net;
 using Discord.WebSocket;
 using DML.AppCore.Classes;
+using DML.Application.Classes;
+using DML.Application.Classes.RPC;
 using DML.Application.Dialogs;
 using DML.Client;
 using LiteDB;
@@ -19,7 +36,7 @@ using System.Threading.Tasks;
 using System.Windows.Forms;
 using Logger = SweetLib.Utils.Logger.Logger;
 
-namespace DML.Application.Classes
+namespace DML.Application.Core
 {
     public static class Core
     {
@@ -27,11 +44,14 @@ namespace DML.Application.Classes
         internal static LiteDatabase Database { get; set; }
         internal static Settings Settings { get; set; }
         internal static JobScheduler Scheduler { get; } = new JobScheduler();
-        internal static RavenClient Raven = new RavenClient("https://0de964231669473e9098b9f6cc1d6278:79d9f2eb24034de199b2a37cc058e0f2@sentry.io/257114");
-
+        internal static RavenClient Raven { get; } = new RavenClient("https://0de964231669473e9098b9f6cc1d6278:79d9f2eb24034de199b2a37cc058e0f2@sentry.io/257114");
+        internal static bool ShuttingDown { get; private set; } = false;
         internal static string DataDirectory
            => Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), @"Serraniel\Discord Media Loader");
 
+        internal static DiscordRpc.RichPresence RpcPresence;
+        internal static DiscordRpc.EventHandlers RpcHandlers = new DiscordRpc.EventHandlers();
+
         public static async Task Run(string[] paramStrings)
         {
             try
@@ -91,10 +111,16 @@ namespace DML.Application.Classes
                     logMemory.ArchiveFile = logFile;
                 }
 
+                var databasePath = Path.Combine(DataDirectory, "config.db");
+#if DEBUG
+                databasePath = Path.Combine(DataDirectory, "config.debug.db");
+#endif
                 Logger.Debug("Loading database...");
-                Database = new LiteDatabase(Path.Combine(DataDirectory, "config.db"));
+                Database = new LiteDatabase(databasePath);
                 Database.Log.Logging += (message) => Logger.Trace($"LiteDB: {message}");
 
+                Migrator.CheckMigrations();
+
                 Logger.Debug("Loading settings collection out of database...");
                 var settingsDB = Database.GetCollection<Settings>("settings");
                 if (settingsDB.Count() > 1)
@@ -245,17 +271,59 @@ namespace DML.Application.Classes
                         job.Stop();
                         job.Delete();
                     }
+
+                    if (Settings.RescanRequired)
+                    {
+                        Logger.Info("Restting timestamps");
+                        job.LastMessageId = 0;
+                        job.Store();
+                    }
                 }
 
+                // TODO 
+                // Settings.RescanRequired = false;
+                // Settings.Store();
+
+                if (Settings.UseRPC)
+                {
+                    Logger.Info("Initializing RPC client");
+                    Logger.Trace("Registering RPC handlers");
+                    RpcHandlers.readyCallback += RpcReadyCallback;
+                    RpcHandlers.disconnectedCallback += RpcDisconnectedCallback;
+                    RpcHandlers.errorCallback += RpcErrorCallback;
+                    RpcPresence.startTimestamp = DiscordRpcHelper.DateTimeToTimestamp(DateTime.UtcNow);
+
+                    Logger.Debug("Calling RPC initialize");
+                    DiscordRpc.Initialize("430025401851707393", ref RpcHandlers, true, null);
+
+                    // Do not await ;)
+                    Task.Run(async () =>
+                    {
+                        while (!ShuttingDown)
+                        {
+                            Logger.Trace("Running RPC callbacks");
+                            await Task.Delay(5000);
+                        }
+                    });
+                }
+
+                DMLClient.Client.MessageReceived += Scheduler.HandleMessageReceived;
+
                 splash.Close();
 
                 Logger.Info("Starting scheduler...");
-                Scheduler.Start();
+                Scheduler.StartScheduler();
 
                 System.Windows.Forms.Application.Run(new MainForm());
 
+                // shutting down
+                ShuttingDown = true;
+
                 Logger.Info("Stopping scheduler...");
                 Scheduler.Stop();
+
+                Logger.Info("Shutting down RPC client");
+                DiscordRpc.Shutdown();
             }
             catch (Exception ex)
             {
@@ -285,5 +353,26 @@ namespace DML.Application.Classes
             Logger.Trace($"Trying to find channel in {server} by id: {id}");
             return (from c in server.TextChannels where c.Id == id select c).FirstOrDefault();
         }
+
+        internal static void RpcUpdatePresence()
+        {
+            Logger.Debug("Updating RPC presence");
+            DiscordRpc.UpdatePresence(ref RpcPresence);
+        }
+
+        private static void RpcReadyCallback()
+        {
+            Logger.Debug("RpcReady");
+        }
+
+        private static void RpcDisconnectedCallback(int errorCode, string message)
+        {
+            Logger.Warn($"RPC disconnect received: {errorCode} - {message}");
+        }
+
+        private static void RpcErrorCallback(int errorCode, string message)
+        {
+            Logger.Error($"RPC error received: {errorCode} - {message}");
+        }
     }
 }

src/Discord Media Loader.Application/Core/Migrator.cs

@@ -0,0 +1,70 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Migrator.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+
+using System;
+using System.Collections.Generic;
+using DML.AppCore.Classes;
+using LiteDB;
+
+namespace DML.Application.Core
+{
+    internal static class Migrator
+    {
+        internal static ushort Version => 1;
+
+        internal static void CheckMigrations()
+        {
+            var baseVersion = Core.Database.Engine.UserVersion;
+
+            for (var step = (ushort)(baseVersion + 1); step <= Version; step++)
+            {
+                Migrate(step);
+            }
+        }
+
+        private static void Migrate(ushort step)
+        {
+            switch (step)
+            {
+                case 0:
+                    // base database
+                    break;
+                case 1:
+                    foreach (var jobDoc in Core.Database.Engine.Find("jobs", Query.All()))
+                    {
+                        // pseudo datetime snowflake conversion https://discordapp.com/developers/docs/reference#convert-snowflake-to-datetime
+                        var pseudoId = 0UL;
+                        var timestamp = (ulong)jobDoc["KnownTimestamp"].AsDouble * 1000; // milliseconds have not been stored
+
+                        if (timestamp > 0)
+                        {
+                            pseudoId = timestamp - 1420070400000 << 22;
+                            pseudoId = pseudoId - (1000UL * 60 * 60 * 24 << 22); // substract one random day of pseudo id just in case the timestamp has errors
+                        }
+                        
+                        jobDoc["LastMessageId"] = Convert.ToInt64(pseudoId); // LiteDB maps (u)long to Int64
+                        jobDoc.Remove("KnownTimestamp");
+
+                        Core.Database.Engine.Update("jobs", jobDoc);
+                    }
+
+                    break;
+            }
+
+            Core.Database.Engine.UserVersion = step;
+        }
+    }
+}

src/Discord Media Loader.Application/DML.Application.csproj

@@ -164,9 +164,14 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Classes\Core.cs" />
+    <Compile Include="Core\Core.cs" />
     <Compile Include="Classes\Job.cs" />
     <Compile Include="Classes\JobScheduler.cs" />
+    <Compile Include="Classes\RPC\DiscordRpc.cs" />
+    <Compile Include="Classes\RPC\DiscordRpcHelper.cs" />
+    <Compile Include="Classes\RPC\RpcWrapper.cs" />
+    <Compile Include="Classes\MediaData.cs" />
+    <Compile Include="Core\Migrator.cs" />
     <Compile Include="Dialogs\LoginDialog.cs">
       <SubType>Form</SubType>
     </Compile>

src/Discord Media Loader.Application/Dialogs/LoginDialog.Designer.cs

@@ -1,4 +1,19 @@
-namespace DML.Application.Dialogs
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited LoginDialog.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace DML.Application.Dialogs
 {
     partial class LoginDialog
     {

src/Discord Media Loader.Application/Dialogs/LoginDialog.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited LoginDialog.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.Windows.Forms;
 using DML.Application.Classes;
 using static SweetLib.Utils.Logger.Logger;
@@ -15,7 +30,7 @@ namespace DML.Application.Dialogs
         private void LoginDialog_Shown(object sender, EventArgs e)
         {
             Trace("Login dialog shown.");
-            edToken.Text = Core.Settings.LoginToken;
+            edToken.Text = Core.Core.Settings.LoginToken;
         }
 
         private void LoginDialog_FormClosing(object sender, FormClosingEventArgs e)
@@ -25,9 +40,9 @@ namespace DML.Application.Dialogs
                 return;
 
             Debug("Adjusting login settings...");
-            Core.Settings.LoginToken = edToken.Text;
+            Core.Core.Settings.LoginToken = edToken.Text;
 
-            Core.Settings.Store();
+            Core.Core.Settings.Store();
         }
 
         private void btnOk_Click(object sender, EventArgs e)

src/Discord Media Loader.Application/FrmInternalSplash.Designer.cs

@@ -1,4 +1,19 @@
-namespace DML.Application
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmInternalSplash.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace DML.Application
 {
     partial class FrmInternalSplash
     {

src/Discord Media Loader.Application/FrmInternalSplash.cs

@@ -0,0 +1,27 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmInternalSplash.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System.Windows.Forms;
+
+namespace DML.Application
+{
+    public partial class FrmInternalSplash : Form
+    {
+        public FrmInternalSplash()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Discord Media Loader.Application/Helper/IdentifiedString.cs

@@ -0,0 +1,37 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited IdentifiedString.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DML.Application.Helper
+{
+    internal class IdentifiedString<T>
+    {
+        internal T Id { get; set; }
+        internal string Caption { get; set; }
+        
+        internal IdentifiedString(T id, string caption)
+        {
+            Id = id;
+            Caption = caption;
+        }
+
+        public override string ToString() => Caption;
+    }
+}

src/Discord Media Loader.Application/MainForm.Designer.cs

@@ -1,4 +1,19 @@
-namespace DML.Application
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited MainForm.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace DML.Application
 {
     partial class MainForm
     {

src/Discord Media Loader.Application/MainForm.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited MainForm.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
@@ -10,6 +25,7 @@ using Discord.WebSocket;
 using DML.AppCore.Classes;
 using DML.Application.Classes;
 using DML.Application.Helper;
+using DML.Application.Classes.RPC;
 using DML.Client;
 using static DML.Client.DMLClient;
 using static SweetLib.Utils.Logger.Logger;
@@ -26,6 +42,8 @@ namespace DML.Application
     public partial class MainForm : Form
     {
         private bool IsInitialized { get; set; } = false;
+        private DiscordRpc.RichPresence Presence { get; }
+
         public MainForm()
         {
             InitializeComponent();
@@ -46,16 +64,16 @@ namespace DML.Application
             lbVersion.Text = $"v{Assembly.GetExecutingAssembly().GetName().Version} Copyright © by Serraniel";
 
             Trace("Refreshing operating folder component...");
-            edOperatingFolder.Text = Core.Settings.OperatingFolder;
+            edOperatingFolder.Text = Core.Core.Settings.OperatingFolder;
 
             Trace("Refreshing name scheme component...");
-            edNameScheme.Text = Core.Settings.FileNameScheme;
+            edNameScheme.Text = Core.Core.Settings.FileNameScheme;
 
             Trace("Refreshing skip existing files component...");
-            cbSkipExisting.Checked = Core.Settings.SkipExistingFiles;
+            cbSkipExisting.Checked = Core.Core.Settings.SkipExistingFiles;
 
             Trace("Refreshing thread limit component...");
-            edThreadLimit.Value = Core.Settings.ThreadLimit;
+            edThreadLimit.Value = Core.Core.Settings.ThreadLimit;
 
             if (cbGuild.Items.Count == 0)
             {
@@ -70,7 +88,7 @@ namespace DML.Application
             Trace("Refreshing job list component...");
             var oldIndex = lbxJobs.SelectedIndex;
             lbxJobs.Items.Clear();
-            foreach (var job in Core.Scheduler.JobList)
+            foreach (var job in Core.Core.Scheduler.JobList)
             {
                 lbxJobs.Items.Add(new IdentifiedString<int>(job.Id, $"{FindServerById(job.GuildId)?.Name}:{FindChannelById(FindServerById(job.GuildId), job.ChannelId)?.Name}"));
             }
@@ -89,19 +107,19 @@ namespace DML.Application
             }
 
             Trace("Updating operating folder...");
-            Core.Settings.OperatingFolder = edOperatingFolder.Text;
+            Core.Core.Settings.OperatingFolder = edOperatingFolder.Text;
 
             Trace("Updating name scheme...");
-            Core.Settings.FileNameScheme = edNameScheme.Text;
+            Core.Core.Settings.FileNameScheme = edNameScheme.Text;
 
             Trace("Updating skip existing files...");
-            Core.Settings.SkipExistingFiles = cbSkipExisting.Checked;
+            Core.Core.Settings.SkipExistingFiles = cbSkipExisting.Checked;
 
             Trace("Updating thread limit...");
-            Core.Settings.ThreadLimit = (int)edThreadLimit.Value;
+            Core.Core.Settings.ThreadLimit = (int)edThreadLimit.Value;
 
             Trace("Storing new settings...");
-            Core.Settings.Store();
+            Core.Core.Settings.Store();
 
             Info("New settings have been saved.");
         }
@@ -193,12 +211,12 @@ namespace DML.Application
                 ChannelId = ((IdentifiedString<ulong>)cbChannel.SelectedItem).Id
             };
 
-            if (!(from j in Core.Scheduler.JobList
+            if (!(from j in Core.Core.Scheduler.JobList
                   where j.GuildId == job.GuildId && j.ChannelId == job.ChannelId
                   select j).Any())
             {
                 job.Store();
-                Core.Scheduler.JobList.Add(job);
+                Core.Core.Scheduler.JobList.Add(job);
             }
 
             RefreshComponents();
@@ -216,11 +234,11 @@ namespace DML.Application
 
             var jobId = ((IdentifiedString<int>)lbxJobs.SelectedItem).Id;
 
-            var job = Core.Scheduler.JobList.FirstOrDefault(j => j.Id == jobId);
+            var job = Core.Core.Scheduler.JobList.FirstOrDefault(j => j.Id == jobId);
             if (job != null)
             {
-                Core.Scheduler.JobList.Remove(job);
-                Core.Scheduler.RunningJobs.Remove(job.Id);
+                Core.Core.Scheduler.JobList.Remove(job);
+                Core.Core.Scheduler.RunningJobs.Remove(job.Id);
                 job.Stop();
                 job.Delete();
             }
@@ -231,9 +249,9 @@ namespace DML.Application
 
         private void tmrRefreshProgress_Tick(object sender, System.EventArgs e)
         {
-            var scanned = Core.Scheduler.MessagesScanned;
-            var totalAttachments = Core.Scheduler.TotalAttachments;
-            var done = Core.Scheduler.AttachmentsDownloaded;
+            var scanned = Core.Core.Scheduler.MessagesScanned;
+            var totalAttachments = Core.Core.Scheduler.TotalAttachments;
+            var done = Core.Core.Scheduler.AttachmentsDownloaded;
 
             var progress = totalAttachments > 0 ? (int)(100 * done / totalAttachments) : 0;
             progress = Math.Min(Math.Max(0, progress), 100);
@@ -241,6 +259,18 @@ namespace DML.Application
             pgbProgress.Value = progress;
 
             lbProgress.Text = $"Scanned: {scanned} Downloaded: {done} Open: {totalAttachments - done}";
+
+            if (Core.Core.Settings.UseRPC)
+            {
+                Core.Core.RpcPresence.details = "Downloading media files";
+                Core.Core.RpcPresence.state = $"{done} / {totalAttachments} ({pgbProgress.Value}%)";
+                Core.Core.RpcPresence.largeImageKey = "main";
+                Core.Core.RpcPresence.largeImageText = "Visit discordmedialoader.net";
+                Core.Core.RpcPresence.smallImageKey = "author";
+                Core.Core.RpcPresence.smallImageText = "Made by Serraniel";
+
+                Core.Core.RpcUpdatePresence();
+            }
         }
 
         private void aboutToolStripMenuItem_Click(object sender, System.EventArgs e)
@@ -285,7 +315,7 @@ namespace DML.Application
 
         private void showTokenToolStripMenuItem_Click(object sender, EventArgs e)
         {
-            Clipboard.SetText(Core.Settings.LoginToken);
+            Clipboard.SetText(Core.Core.Settings.LoginToken);
             MessageBox.Show(this, "Your login token has been copied to your clipboard.", "Discord Media Loader",
                 MessageBoxButtons.OK);
         }

src/Discord Media Loader.Application/Properties/AssemblyInfo.cs

@@ -1,5 +1,19 @@
-using System.Reflection;
-using System.Runtime.CompilerServices;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited AssemblyInfo.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System.Reflection;
 using System.Runtime.InteropServices;
 
 // Allgemeine Informationen über eine Assembly werden über die folgenden 

src/Discord Media Loader.Application/Properties/Resources.Designer.cs

@@ -1,12 +1,17 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     Dieser Code wurde von einem Tool generiert.
-//     Laufzeitversion:4.0.30319.42000
-//
-//     Änderungen an dieser Datei können falsches Verhalten verursachen und gehen verloren, wenn
-//     der Code erneut generiert wird.
-// </auto-generated>
-//------------------------------------------------------------------------------
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-2019 - All Rights Reserved
+ * 
+ * This file is part of "DML.Application".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "DML.Application" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Resources.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
 
 namespace DML.Application.Properties {
     using System;

src/Discord Media Loader.sln.licenseheader

@@ -0,0 +1,15 @@
+extensions: .cs .cpp .h
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2017-%CurrentYear% - All Rights Reserved
+ * 
+ * This file is part of "%Project%".
+ * The official repository is hosted at https://github.com/Serraniel/DiscordMediaLoader
+ * 
+ * "%Project%" is licensed under Apache 2.0.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited %FileName% under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion

src/Discord Media Loader/App.config

@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+Sample license text.
+-->
 <configuration>
     <startup> 
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />

src/Discord Media Loader/Discord Media Loader.csproj

@@ -190,6 +190,9 @@
       <DependentUpon>Resources.resx</DependentUpon>
       <DesignTime>True</DesignTime>
     </Compile>
+    <None Include="..\..\Darkorbit Helper Program\src\Darkorbit Helper Program\Darkorbit Helper Program.licenseheader">
+      <Link>Darkorbit Helper Program.licenseheader</Link>
+    </None>
     <None Include="packages.config" />
     <None Include="Properties\Settings.settings">
       <Generator>SettingsSingleFileGenerator</Generator>

src/Discord Media Loader/FrmDownload.Designer.cs

@@ -1,4 +1,19 @@
-namespace Discord_Media_Loader
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmDownload.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace Discord_Media_Loader
 {
     partial class FrmDownload
     {

src/Discord Media Loader/FrmDownload.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmDownload.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.ComponentModel;
 using System.Globalization;
 using System.Net;

src/Discord Media Loader/FrmSplash.Designer.cs

@@ -1,4 +1,19 @@
-namespace Discord_Media_Loader
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmSplash.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace Discord_Media_Loader
 {
     partial class FrmSplash
     {

src/Discord Media Loader/FrmSplash.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited FrmSplash.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.IO;
 using System.IO.Compression;
 using System.Windows.Forms;
@@ -15,6 +30,7 @@ namespace Discord_Media_Loader
 
         private async void FrmSplash_Shown(object sender, EventArgs e)
         {
+#if !DEBUG
             UseWaitCursor = true;
             try
             {
@@ -52,6 +68,7 @@ namespace Discord_Media_Loader
             {
                 UseWaitCursor = false;
             }
+#endif
 
             DialogResult = DialogResult.OK;
         }

src/Discord Media Loader/Helper/TaskBarProgress.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited TaskBarProgress.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.Runtime.InteropServices;
 
 namespace Discord_Media_Loader.Helper

src/Discord Media Loader/Helper/VersionHelper.cs

@@ -1,4 +1,19 @@
-using System;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited VersionHelper.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System;
 using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;

src/Discord Media Loader/Program.cs

@@ -0,0 +1,47 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Program.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using DML.Application.Core;
+using Nito.AsyncEx;
+using System;
+using System.Windows.Forms;
+
+namespace Discord_Media_Loader
+{
+    static class Program
+    {
+        [STAThread]
+        static void Main(string[] paramStrings)
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+
+            var splashScreen = new FrmSplash();
+            if (splashScreen.ShowDialog() == DialogResult.OK)
+            {
+                DoLaunch(paramStrings);
+            }
+            else
+            {
+                Application.Restart();
+            }
+        }
+
+        private static void DoLaunch(string[] paramStrings)
+        {
+            AsyncContext.Run(() => Core.Run(paramStrings));
+        }
+    }
+}

src/Discord Media Loader/Properties/AssemblyInfo.cs

@@ -1,5 +1,19 @@
-using System.Reflection;
-using System.Runtime.CompilerServices;
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited AssemblyInfo.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+using System.Reflection;
 using System.Runtime.InteropServices;
 
 // Allgemeine Informationen über eine Assembly werden über die folgenden 

src/Discord Media Loader/Properties/Resources.Designer.cs

@@ -1,12 +1,17 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     Dieser Code wurde von einem Tool generiert.
-//     Laufzeitversion:4.0.30319.42000
-//
-//     Änderungen an dieser Datei können falsches Verhalten verursachen und gehen verloren, wenn
-//     der Code erneut generiert wird.
-// </auto-generated>
-//------------------------------------------------------------------------------
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Resources.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
 
 namespace Discord_Media_Loader.Properties {
     using System;

src/Discord Media Loader/Properties/Settings.Designer.cs

@@ -0,0 +1,31 @@
+#region LICENSE
+/**********************************************************************************************
+ * Copyright (C) 2019-2019 - All Rights Reserved
+ * 
+ * This file is part of "Discord Media Loader".
+ * The official repository is hosted at https://github.com/Serraniel/Darkorbit-Helper-Program
+ * 
+ * "Discord Media Loader" is licensed under European Union Public Licence V. 1.2.
+ * Full license is included in the project repository.
+ * 
+ * Users who edited Settings.Designer.cs under the condition of the used license:
+ * - Serraniel (https://github.com/Serraniel)
+ **********************************************************************************************/
+#endregion
+
+namespace Discord_Media_Loader.Properties {
+    
+    
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.1.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
+        
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+        
+        public static Settings Default {
+            get {
+                return defaultInstance;
+            }
+        }
+    }
+}

src/Discord Media Loader/packages.config

@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+Sample license text.
+-->
 <packages>
   <package id="Discord.Net" version="1.0.2" targetFramework="net461" />
   <package id="Discord.Net.Commands" version="1.0.2" targetFramework="net461" />