A lot of things fixed/improved. Basis for db is done.

src/NadekoBot/Migrations/20160824013005_FirstMigration.Designer.cs

@@ -0,0 +1,36 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using NadekoBot.Services.Database.Impl;
+
+namespace NadekoBot.Migrations
+{
+    [DbContext(typeof(NadekoSqliteContext))]
+    [Migration("20160824013005_FirstMigration")]
+    partial class FirstMigration
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+            modelBuilder
+                .HasAnnotation("ProductVersion", "1.0.0-rtm-21431");
+
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.Quote", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Keyword");
+
+                    b.Property<string>("Text");
+
+                    b.Property<string>("UserName");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Quotes");
+                });
+        }
+    }
+}

src/NadekoBot/Migrations/20160824013005_FirstMigration.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace NadekoBot.Migrations
+{
+    public partial class FirstMigration : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Quotes",
+                columns: table => new
+                {
+                    Id = table.Column<int>(nullable: false)
+                        .Annotation("Autoincrement", true),
+                    Keyword = table.Column<string>(nullable: true),
+                    Text = table.Column<string>(nullable: true),
+                    UserName = table.Column<string>(nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Quotes", x => x.Id);
+                });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Quotes");
+        }
+    }
+}

src/NadekoBot/Migrations/NadekoSqliteContextModelSnapshot.cs

@@ -0,0 +1,35 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using NadekoBot.Services.Database.Impl;
+
+namespace NadekoBot.Migrations
+{
+    [DbContext(typeof(NadekoSqliteContext))]
+    partial class NadekoSqliteContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+            modelBuilder
+                .HasAnnotation("ProductVersion", "1.0.0-rtm-21431");
+
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.Quote", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Keyword");
+
+                    b.Property<string>("Text");
+
+                    b.Property<string>("UserName");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Quotes");
+                });
+        }
+    }
+}

src/NadekoBot/Modules/Administration/AdministrationModule.cs

@@ -52,7 +52,7 @@ namespace NadekoBot.Modules.Administration
         //    else
         //        await channel.SendMessageAsync("❗`Stopped automatic deletion of successfull command invokations.`");
         //}
-
+        
         [LocalizedCommand, LocalizedDescription, LocalizedSummary]
         [RequireContext(ContextType.Guild)]
         [RequirePermission(GuildPermission.ManageRoles)]

src/NadekoBot/Modules/Searches/Commands/LoLCommands.cs

@@ -51,7 +51,7 @@ namespace NadekoBot.Modules.Searches
                                                     .ConfigureAwait(false))["data"] as JArray;
                     var dataList = data.Distinct(new ChampionNameComparer()).Take(showCount).ToList();
                     var sb = new StringBuilder();
-                    sb.AppendLine($"**Showing {showCount} top banned champions.**");
+                    sb.AppendLine($"**Showing {dataList.Count} top banned champions.**");
                     sb.AppendLine($"`{trashTalk[new Random().Next(0, trashTalk.Length)]}`");
                     for (var i = 0; i < dataList.Count; i++)
                     {

src/NadekoBot/Modules/Searches/Commands/OsuCommands.cs

@@ -133,9 +133,9 @@ namespace NadekoBot.Modules.Searches
                             var acc = CalculateAcc(item, m);
                             var mods = ResolveMods(Int32.Parse($"{item["enabled_mods"]}"));
                             if (mods != "+")
-                                sb.AppendLine($"{pp + "pp",-7} | {acc + "%",-7} | {map["artist"] + "-" + map["title"] + " (" + map["version"],-40}) | **{mods,-10}** | /b/{item["beatmap_id"]}");
+                                sb.AppendLine($"{pp + "pp",-7} | {acc + "%",-7} | {map["artist"] + "-" + map["title"] + " (" + map["version"] + ")",-40} | **{mods,-10}** | /b/{item["beatmap_id"]}");
                             else
-                                sb.AppendLine($"{pp + "pp",-7} | {acc + "%",-7} | {map["artist"] + "-" + map["title"] + " (" + map["version"],-40})  | /b/{item["beatmap_id"]}");
+                                sb.AppendLine($"{pp + "pp",-7} | {acc + "%",-7} | {map["artist"] + "-" + map["title"] + " (" + map["version"] + ")",-40}  | /b/{item["beatmap_id"]}");
                         }
                         sb.Append("```");
                         await channel.SendMessageAsync(sb.ToString()).ConfigureAwait(false);

src/NadekoBot/Modules/Utility/Utility.cs

@@ -25,7 +25,7 @@ namespace NadekoBot.Modules.Utility
 
         [LocalizedCommand, LocalizedDescription, LocalizedSummary]
         [RequireContext(ContextType.Guild)]
-        public async Task WhoPlays(IMessage imsg, [Remainder] string game = null)
+        public async Task WhosPlaying(IMessage imsg, [Remainder] string game = null)
         {
             var channel = (ITextChannel)imsg.Channel;
             game = game.Trim().ToUpperInvariant();

src/NadekoBot/Resources/CommandStrings.Designer.cs

@@ -3813,7 +3813,7 @@ namespace NadekoBot.Resources {
         }
         
         /// <summary>
-        ///    Looks up a localized string similar to Shows top 6 banned champions ordered by ban rate. Ban these champions and you will be Plat 5 in no time..
+        ///    Looks up a localized string similar to Shows top banned champions ordered by ban rate..
         /// </summary>
         public static string lolban_desc {
             get {
@@ -7433,27 +7433,27 @@ namespace NadekoBot.Resources {
         /// <summary>
         ///    Looks up a localized string similar to Shows a list of users who are playing the specified game..
         /// </summary>
-        public static string whoplays_desc {
+        public static string whosplaying_desc {
             get {
-                return ResourceManager.GetString("whoplays_desc", resourceCulture);
+                return ResourceManager.GetString("whosplaying_desc", resourceCulture);
             }
         }
         
         /// <summary>
         ///    Looks up a localized string similar to `.whoplays Overwatch`.
         /// </summary>
-        public static string whoplays_summary {
+        public static string whosplaying_summary {
             get {
-                return ResourceManager.GetString("whoplays_summary", resourceCulture);
+                return ResourceManager.GetString("whosplaying_summary", resourceCulture);
             }
         }
         
         /// <summary>
-        ///    Looks up a localized string similar to whoplays.
+        ///    Looks up a localized string similar to whosplaying.
         /// </summary>
-        public static string whoplays_text {
+        public static string whosplaying_text {
             get {
-                return ResourceManager.GetString("whoplays_text", resourceCulture);
+                return ResourceManager.GetString("whosplaying_text", resourceCulture);
             }
         }
         

src/NadekoBot/Resources/CommandStrings.resx

@@ -864,13 +864,13 @@
   <data name="userinfo_summary" xml:space="preserve">
     <value>`.uinfo @SomeUser`</value>
   </data>
-  <data name="whoplays_text" xml:space="preserve">
-    <value>whoplays</value>
+  <data name="whosplaying_text" xml:space="preserve">
+    <value>whosplaying</value>
   </data>
-  <data name="whoplays_desc" xml:space="preserve">
+  <data name="whosplaying_desc" xml:space="preserve">
     <value>Shows a list of users who are playing the specified game.</value>
   </data>
-  <data name="whoplays_summary" xml:space="preserve">
+  <data name="whosplaying_summary" xml:space="preserve">
     <value>`.whoplays Overwatch`</value>
   </data>
   <data name="inrole_text" xml:space="preserve">
@@ -1939,7 +1939,7 @@
     <value>lolban</value>
   </data>
   <data name="lolban_desc" xml:space="preserve">
-    <value>Shows top 6 banned champions ordered by ban rate. Ban these champions and you will be Plat 5 in no time.</value>
+    <value>Shows top banned champions ordered by ban rate.</value>
   </data>
   <data name="lolban_summary" xml:space="preserve">
     <value>`~lolban`</value>

src/NadekoBot/Services/Database/IUnitOfWork.cs

@@ -0,0 +1,15 @@
+using NadekoBot.Services.Database.Repositories;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database
+{
+    public interface IUnitOfWork : IDisposable
+    {
+        IQuoteRepository Quotes { get; }
+        Task<int> Complete();
+    }
+}

src/NadekoBot/Services/Database/Impl/NadekoSqlServerContext.cs

@@ -0,0 +1,18 @@
+//using System;
+//using System.Collections.Generic;
+//using System.Linq;
+//using System.Text;
+//using System.Threading.Tasks;
+//using Microsoft.EntityFrameworkCore;
+
+//namespace NadekoBot.Services.Database.Impl
+//{
+//    public class NadekoSqlServerContext : NadekoContext
+//    {
+//        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+//        {
+//            //CONFIGURE SQL SERVER HERE
+//            optionsBuilder.UseSqlite("Filename=./NadekoBot.db");
+//        }
+//    }
+//}

src/NadekoBot/Services/Database/Impl/NadekoSqliteContext.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+
+namespace NadekoBot.Services.Database.Impl
+{
+    public class NadekoSqliteContext : NadekoContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseSqlite("Filename=./NadekoBot.db");
+        }
+    }
+}

src/NadekoBot/Services/Database/Models/DbEntity.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database.Models
+{
+    public class DbEntity
+    {
+        [Key]
+        public int Id { get; set; }
+        public DateTime DateAdded { get; } = DateTime.UtcNow;
+    }
+}

src/NadekoBot/Services/Database/Models/Quote.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database.Models
+{
+    public class Quote : DbEntity
+    {
+        public string UserName { get; set; }
+        public string Keyword { get; set; }
+        public string Text { get; set; }
+    }
+}

src/NadekoBot/Services/Database/NadekoContext.cs

@@ -0,0 +1,17 @@
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+using NadekoBot.Services.Database.Models;
+
+namespace NadekoBot.Services.Database
+{
+    public abstract class NadekoContext : DbContext
+    {
+        public DbSet<Quote> Quotes { get; }
+
+        protected abstract override void OnConfiguring(DbContextOptionsBuilder optionsBuilder);
+    }
+}

src/NadekoBot/Services/Database/Repositories/Extensions.cs

@@ -0,0 +1,52 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using NadekoBot.Services.Database.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database.Repositories
+{
+    //some guy from stack overflow wrotethis, thanks to him :D
+    public static class Extensions
+    {
+        public static TEntity Find<TEntity>(this DbSet<TEntity> set, params object[] keyValues) where TEntity : DbEntity
+        {
+            var context = ((IInfrastructure<IServiceProvider>)set).GetService<DbContext>();
+
+            var entityType = context.Model.FindEntityType(typeof(TEntity));
+            var key = entityType.FindPrimaryKey();
+
+            var entries = context.ChangeTracker.Entries<TEntity>();
+
+            var i = 0;
+            foreach (var property in key.Properties)
+            {
+                entries = entries.Where(e => e.Property(property.Name).CurrentValue == keyValues[i]);
+                i++;
+            }
+
+            var entry = entries.FirstOrDefault();
+            if (entry != null)
+            {
+                // Return the local object if it exists.
+                return entry.Entity;
+            }
+
+            // TODO: Build the real LINQ Expression
+            // set.Where(x => x.Id == keyValues[0]);
+            var parameter = Expression.Parameter(typeof(TEntity), "x");
+            var query = set.Where((Expression<Func<TEntity, bool>>)
+                Expression.Lambda(
+                    Expression.Equal(
+                        Expression.Property(parameter, "Id"),
+                        Expression.Constant(keyValues[0])),
+                    parameter));
+
+            // Look in the database
+            return query.FirstOrDefault();
+        }
+    }
+}

src/NadekoBot/Services/Database/Repositories/IQuoteRepository.cs

@@ -0,0 +1,15 @@
+using NadekoBot.Services.Database.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database.Repositories
+{
+    public interface IQuoteRepository : IRepository<Quote>
+    {
+        IEnumerable<Quote> GetQuotesByText(string text);
+        Task<Quote> GetRandomQuoteByTextAsync(string text);
+    }
+}

src/NadekoBot/Services/Database/Repositories/IRepository.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using NadekoBot.Services.Database.Models;
+
+namespace NadekoBot.Services.Database.Repositories
+{
+    public interface IRepository<T> where T : DbEntity
+    {
+        T Get(int id);
+        IEnumerable<T> GetAll();
+
+        void Add(T obj);
+        void AddRange(params T[] objs);
+
+        void Remove(int id);
+        void Remove(T obj);
+        void RemoveRange(params T[] ids);
+
+        void Update(T obj);
+        void UpdateRange(params T[] objs);
+    }
+}

src/NadekoBot/Services/Database/Repositories/Impl/QuoteRepository.cs

@@ -0,0 +1,27 @@
+using NadekoBot.Services.Database.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using NadekoBot.Services.Database;
+
+namespace NadekoBot.Services.Database.Repositories.Impl
+{
+    public class QuoteRepository : Repository<Quote>, IQuoteRepository
+    {
+        public QuoteRepository(DbContext context) : base(context)
+        {
+        }
+
+        public IEnumerable<Quote> GetQuotesByText(string text) => 
+            _set.Where(q => q.Text == text);
+
+        public Task<Quote> GetRandomQuoteByTextAsync(string text)
+        {
+            var rng = new Random();
+            return _set.Where(q => q.Text == text).OrderBy(q => rng.Next()).FirstOrDefaultAsync();
+        }
+    }
+}

src/NadekoBot/Services/Database/Repositories/Impl/Repository.cs

@@ -0,0 +1,49 @@
+using Microsoft.EntityFrameworkCore;
+using NadekoBot.Services.Database.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database.Repositories.Impl
+{
+    public class Repository<T> : IRepository<T> where T : DbEntity
+    {
+        protected DbContext _context;
+        protected DbSet<T> _set;
+
+        public Repository(DbContext context)
+        {
+            _context = context;
+            _set = context.Set<T>();
+        }
+
+        public void Add(T obj) =>
+            _set.Add(obj);
+
+        public void AddRange(params T[] objs) =>
+            _set.AddRange(objs);
+
+        public T Get(int id) =>
+            _set.Find(id);
+
+        public IEnumerable<T> GetAll() =>
+            _set.ToList();
+
+        public void Remove(int id) =>
+            _set.Remove(_set.Find(id));
+
+        public void Remove(T obj) =>
+            _set.Remove(obj);
+
+        public void RemoveRange(params T[] objs) =>
+            _set.RemoveRange(objs);
+
+        public void Update(T obj) =>
+            _set.Update(obj);
+
+        public void UpdateRange(params T[] objs) =>
+            _set.UpdateRange(objs);
+    }
+}

src/NadekoBot/Services/Database/UnitOfWork.cs

@@ -0,0 +1,43 @@
+using NadekoBot.Services.Database.Repositories;
+using NadekoBot.Services.Database.Repositories.Impl;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services.Database
+{
+    public class UnitOfWork : IUnitOfWork
+    {
+        private NadekoContext _context;
+
+        private IQuoteRepository _quotes;
+        public IQuoteRepository Quotes => _quotes ?? (_quotes = new QuoteRepository(_context));
+
+
+        public UnitOfWork(NadekoContext context)
+        {
+            
+        }
+
+        public Task<int> Complete() => 
+            _context.SaveChangesAsync();
+
+        private bool disposed = false;
+
+        protected void Dispose(bool disposing)
+        {
+            if (!this.disposed)
+                if (disposing)
+                    _context.Dispose();
+            this.disposed = true;
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}

src/NadekoBot/Services/DbHandler.cs

@@ -0,0 +1,42 @@
+using NadekoBot.Services.Database;
+using NadekoBot.Services.Database.Impl;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Services
+{
+    public class DbHandler
+    {
+        private Type dbType;
+
+        private static DbHandler _instance = null;
+        public static DbHandler Instance = _instance ?? (_instance = new DbHandler());
+        
+
+        static DbHandler() { }
+
+        private DbHandler() {
+            switch (NadekoBot.Credentials.Db.Type.ToUpperInvariant())
+            {
+                case "SQLITE":
+                    dbType = typeof(NadekoSqliteContext);
+                    break;
+                //case "SQLSERVER":
+                //    dbType = typeof(NadekoSqlServerContext);
+                //    break;
+                default:
+                    break;
+
+            }
+        }
+
+        public NadekoContext GetDbContext() => 
+            Activator.CreateInstance(dbType) as NadekoContext;
+
+        public UnitOfWork GetUnitOfWork() =>
+            new UnitOfWork(GetDbContext());
+    }
+}

src/NadekoBot/Services/IBotCredentials.cs

@@ -13,6 +13,19 @@ namespace NadekoBot.Services
         string MashapeKey { get; }
         string LoLApiKey { get; }
 
+        DB Db { get; }
+
         bool IsOwner(IUser u);
     }
+
+    public class DB
+    {
+        public DB(string type, string connString)
+        {
+            this.Type = type;
+            this.ConnectionString = connString;
+        }
+        public string Type { get; }
+        public string ConnectionString { get; }
+    }
 }

src/NadekoBot/Services/Impl/BotCredentials.cs

@@ -27,6 +27,8 @@ namespace NadekoBot.Services.Impl
         public string OsuApiKey { get; }
         public string SoundCloudClientId { get; }
 
+        public DB Db { get; }
+
         public BotCredentials()
         {
             _log = LogManager.GetCurrentClassLogger();
@@ -40,6 +42,7 @@ namespace NadekoBot.Services.Impl
                 MashapeKey = cm.MashapeKey;
                 OsuApiKey = cm.OsuApiKey;
                 SoundCloudClientId = cm.SoundCloudClientId;
+                Db = new DB(string.IsNullOrWhiteSpace(cm.Db.Type) ? cm.Db.Type : "sqlite", cm.Db.ConnectionString);
             }
             else
                 _log.Fatal("credentials.json is missing. Failed to start.");
@@ -54,6 +57,13 @@ namespace NadekoBot.Services.Impl
             public string MashapeKey { get; set; }
             public string OsuApiKey { get; set; }
             public string SoundCloudClientId { get; set; }
+            public DB Db { get; set; }
+        }
+
+        private class DbModel
+        {
+            public string Type { get; set; }
+            public string ConnectionString { get; set; }
         }
 
         public bool IsOwner(IUser u) => OwnerIds.Contains(u.Id);

src/NadekoBot/project.json

@@ -27,9 +27,14 @@
     "Google.Apis.Urlshortener.v1": "1.15.0.138",
     "System.Diagnostics.Contracts": "4.0.1",
     "NLog": "4.4.0-betaV15",
-    "VideoLibrary": "1.3.4"
+    "VideoLibrary": "1.3.4",
+    "Microsoft.EntityFrameworkCore": "1.0.0",
+    "Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
+    "Microsoft.EntityFrameworkCore.Sqlite": "1.0.0"
+  },
+  "tools": {
+    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final"
   },
-
   "frameworks": {
     "netcoreapp1.0": {
       "imports": [