Patreon Access and Refresh Tokens should now be automatically updated

src/NadekoBot/Bot.cs

@@ -28,7 +28,7 @@ namespace NadekoBot
         private readonly IBotCredentials _creds;
         private readonly CommandService _commandService;
         private readonly DbService _db;
-        private readonly BotCredsProvider _credsProvider;
+        private readonly IBotCredsProvider _credsProvider;
         
         public event Func<GuildConfig, Task> JoinedGuild = delegate { return Task.CompletedTask; };
         
@@ -95,8 +95,8 @@ namespace NadekoBot
             }
             
             var svcs = new ServiceCollection()
-                .AddTransient<IBotCredentials>(_ => _creds) // bot creds
-                .AddSingleton(_credsProvider)
+                .AddTransient<IBotCredentials>(_ => _credsProvider.GetCreds()) // bot creds
+                .AddSingleton<IBotCredsProvider>(_credsProvider)
                 .AddSingleton(_db) // database
                 .AddRedis(_creds.RedisOptions) // redis
                 .AddSingleton(Client) // discord socket client

src/NadekoBot/Common/Attributes/OwnerOnlyAttribute.cs

@@ -12,7 +12,7 @@ namespace NadekoBot.Common.Attributes
     {
         public override Task<PreconditionResult> CheckPermissionsAsync(ICommandContext context, CommandInfo executingCommand, IServiceProvider services)
         {
-            var creds = services.GetRequiredService<BotCredsProvider>().GetCreds();
+            var creds = services.GetRequiredService<IBotCredsProvider>().GetCreds();
 
             return Task.FromResult((creds.IsOwner(context.User) || context.Client.CurrentUser.Id == context.User.Id ? PreconditionResult.FromSuccess() : PreconditionResult.FromError("Not owner")));
         }

src/NadekoBot/Common/Creds.cs

@@ -73,11 +73,6 @@ go to https://www.patreon.com/portal -> my clients -> create client")]
 Change only if you've changed the coordinator address or port.")]
         public string CoordinatorUrl { get; set; }
         
-        [YamlIgnore]
-        public string PatreonCampaignId => Patreon?.CampaignId;
-        [YamlIgnore]
-        public string PatreonAccessToken => Patreon?.AccessToken;
-        
         [Comment(@"Api key obtained on https://rapidapi.com (go to MyApps -> Add New App -> Enter Name -> Application key)")]
         public string RapidApiKey { get; set; }
 
@@ -121,11 +116,9 @@ Windows default
         // todo fixup patreon
         public sealed record PatreonSettings
         {
-            [Comment(@"Access token. You have to manually update this 1st of each month by refreshing the token on https://patreon.com/portal")]
+            public string ClientId { get; set; }
             public string AccessToken { get; set; }
-            [Comment(@"Unused atm")]
             public string RefreshToken { get; set; }
-            [Comment(@"Unused atm")]
             public string ClientSecret { get; set; }
 
             [Comment(@"Campaign ID of your patreon page. Go to your patreon page (make sure you're logged in) and type ""prompt('Campaign ID', window.patreon.bootstrap.creator.data.id);"" in the console. (ctrl + shift + i)")]

src/NadekoBot/Common/IBotCredentials.cs

@@ -12,12 +12,11 @@ namespace NadekoBot
         string GoogleApiKey { get; }
         ICollection<ulong> OwnerIds { get; }
         string RapidApiKey { get; }
-        string PatreonAccessToken { get; }
 
         Creds.DbOptions Db { get; }
         string OsuApiKey { get; }
         int TotalShards { get; }
-        string PatreonCampaignId { get; }
+        Creds.PatreonSettings Patreon { get; }
         string CleverbotApiKey { get; }
         RestartConfig RestartCommand { get; }
         Creds.VotesSettings Votes { get; }

src/NadekoBot/Modules/Games/CleverBotCommands.cs

@@ -2,6 +2,7 @@
 using Discord.Commands;
 using System;
 using System.Threading.Tasks;
+using NadekoBot.Common;
 using NadekoBot.Common.Attributes;
 using NadekoBot.Services;
 using NadekoBot.Db;
@@ -23,6 +24,7 @@ namespace NadekoBot.Modules.Games
                 _db = db;
             }
 
+            [NoPublicBot]
             [NadekoCommand, Aliases]
             [RequireContext(ContextType.Guild)]
             [UserPerm(GuildPerm.ManageMessages)]

src/NadekoBot/Modules/Utility/Common/Patreon/PatreonData.cs

@@ -1,23 +1,134 @@
-using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
 
 namespace NadekoBot.Modules.Utility.Common.Patreon
 {
-    public class PatreonData
+    public sealed class Attributes
     {
-        public JObject[] Included { get; set; }
-        public JObject[] Data { get; set; }
-        public PatreonDataLinks Links { get; set; }
+        [JsonPropertyName("full_name")]
+        public string FullName { get; set; }
+
+        [JsonPropertyName("is_follower")]
+        public bool IsFollower { get; set; }
+
+        [JsonPropertyName("last_charge_date")]
+        public DateTime LastChargeDate { get; set; }
+
+        [JsonPropertyName("last_charge_status")]
+        public string LastChargeStatus { get; set; }
+
+        [JsonPropertyName("lifetime_support_cents")]
+        public int LifetimeSupportCents { get; set; }
+
+        [JsonPropertyName("currently_entitled_amount_cents")]
+        public int CurrentlyEntitledAmountCents { get; set; }
+
+        [JsonPropertyName("patron_status")]
+        public string PatronStatus { get; set; }
     }
 
-    public class PatreonDataLinks
+    public sealed class Data
     {
-        public string first { get; set; }
-        public string next { get; set; }
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+
+        [JsonPropertyName("type")]
+        public string Type { get; set; }
     }
 
-    public class PatreonUserAndReward
+    public sealed class Address
     {
-        public PatreonUser User { get; set; }
-        public PatreonPledge Reward { get; set; }
+        [JsonPropertyName("data")]
+        public Data Data { get; set; }
+    }
+
+    // public sealed class CurrentlyEntitledTiers
+    // {
+    //     [JsonPropertyName("data")]
+    //     public List<Datum> Data { get; set; }
+    // }
+
+    // public sealed class Relationships
+    // {
+    //     [JsonPropertyName("address")]
+    //     public Address Address { get; set; }
+    //
+    //     // [JsonPropertyName("currently_entitled_tiers")]
+    //     // public CurrentlyEntitledTiers CurrentlyEntitledTiers { get; set; }
+    // }
+
+    public sealed class PatreonResponse
+    {
+        [JsonPropertyName("data")]
+        public List<PatreonMember> Data { get; set; }
+        
+        [JsonPropertyName("included")]
+        public List<PatreonUser> Included { get; set; }
+        
+        [JsonPropertyName("links")]
+        public PatreonLinks Links { get; set; }
+    }
+
+    public sealed class PatreonLinks
+    {
+        [JsonPropertyName("next")]
+        public string Next { get; set; }
+    } 
+
+    public sealed class PatreonUser
+    {
+        [JsonPropertyName("attributes")]
+        public PatreonUserAttributes Attributes { get; set; }
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
+        // public string Type { get; set; }
+    }
+
+    public sealed class PatreonUserAttributes
+    {
+        [JsonPropertyName("social_connections")]
+        public PatreonSocials SocialConnections { get; set; }
+    }
+    public sealed class PatreonSocials
+    {
+        [JsonPropertyName("discord")]
+        public DiscordSocial Discord { get; set; }
+    }
+
+    public sealed class DiscordSocial
+    {
+        [JsonPropertyName("user_id")]
+        public string UserId { get; set; }
+    }
+    
+    public sealed class PatreonMember
+    {
+        [JsonPropertyName("attributes")]
+        public Attributes Attributes { get; set; }
+
+        [JsonPropertyName("relationships")]
+        public Relationships Relationships { get; set; }
+
+        [JsonPropertyName("type")]
+        public string Type { get; set; }
+    }
+
+    public sealed class Relationships
+    {
+        [JsonPropertyName("user")]
+        public PatreonRelationshipUser User { get; set; }
+    }
+
+    public sealed class PatreonRelationshipUser
+    {
+        [JsonPropertyName("data")]
+        public PatreonUserData Data { get; set; }
+    }
+
+    public sealed class PatreonUserData
+    {
+        [JsonPropertyName("id")]
+        public string Id { get; set; }
     }
 }

src/NadekoBot/Modules/Utility/Common/Patreon/PatreonPledge.cs

@@ -1,62 +0,0 @@
-namespace NadekoBot.Modules.Utility.Common.Patreon
-{
-    public class Attributes
-    {
-        public int amount_cents { get; set; }
-        public string created_at { get; set; }
-        public object declined_since { get; set; }
-        public bool is_twitch_pledge { get; set; }
-        public bool patron_pays_fees { get; set; }
-        public int? pledge_cap_cents { get; set; }
-    }
-
-    public class Address
-    {
-        public object data { get; set; }
-    }
-
-    public class Data
-    {
-        public string id { get; set; }
-        public string type { get; set; }
-    }
-
-    public class Links
-    {
-        public string related { get; set; }
-    }
-
-    public class Creator
-    {
-        public Data data { get; set; }
-        public Links links { get; set; }
-    }
-
-    public class Patron
-    {
-        public Data data { get; set; }
-        public Links links { get; set; }
-    }
-
-    public class Reward
-    {
-        public Data data { get; set; }
-        public Links links { get; set; }
-    }
-
-    public class Relationships
-    {
-        public Address address { get; set; }
-        public Creator creator { get; set; }
-        public Patron patron { get; set; }
-        public Reward reward { get; set; }
-    }
-
-    public class PatreonPledge
-    {
-        public Attributes attributes { get; set; }
-        public string id { get; set; }
-        public Relationships relationships { get; set; }
-        public string type { get; set; }
-    }
-}

src/NadekoBot/Modules/Utility/Common/Patreon/PatreonUser.cs

@@ -1,64 +0,0 @@
-namespace NadekoBot.Modules.Utility.Common.Patreon
-{
-    public class DiscordConnection
-    {
-        public string user_id { get; set; }
-    }
-
-    public class SocialConnections
-    {
-        public object deviantart { get; set; }
-        public DiscordConnection discord { get; set; }
-        public object facebook { get; set; }
-        public object spotify { get; set; }
-        public object twitch { get; set; }
-        public object twitter { get; set; }
-        public object youtube { get; set; }
-    }
-
-    public class UserAttributes
-    {
-        public string about { get; set; }
-        public string created { get; set; }
-        public object discord_id { get; set; }
-        public string email { get; set; }
-        public object facebook { get; set; }
-        public object facebook_id { get; set; }
-        public string first_name { get; set; }
-        public string full_name { get; set; }
-        public int gender { get; set; }
-        public bool has_password { get; set; }
-        public string image_url { get; set; }
-        public bool is_deleted { get; set; }
-        public bool is_nuked { get; set; }
-        public bool is_suspended { get; set; }
-        public string last_name { get; set; }
-        public SocialConnections social_connections { get; set; }
-        public int status { get; set; }
-        public string thumb_url { get; set; }
-        public object twitch { get; set; }
-        public string twitter { get; set; }
-        public string url { get; set; }
-        public string vanity { get; set; }
-        public object youtube { get; set; }
-    }
-
-    public class Campaign
-    {
-        public Data data { get; set; }
-        public Links links { get; set; }
-    }
-
-    public class UserRelationships
-    {
-        public Campaign campaign { get; set; }
-    }
-
-    public class PatreonUser
-    {
-        public UserAttributes attributes { get; set; }
-        public string id { get; set; }
-        public UserRelationships relationships { get; set; }
-        public string type { get; set; }
-    }
-}

src/NadekoBot/Modules/Utility/PatreonCommands.cs

@@ -6,6 +6,7 @@ using NadekoBot.Extensions;
 using Discord;
 using NadekoBot.Common.Attributes;
 using NadekoBot.Modules.Utility.Services;
+using Serilog;
 
 namespace NadekoBot.Modules.Utility
 {
@@ -25,8 +26,12 @@ namespace NadekoBot.Modules.Utility
             [RequireContext(ContextType.DM)]
             public async Task ClaimPatreonRewards()
             {
-                if (string.IsNullOrWhiteSpace(_creds.PatreonAccessToken))
+                if (string.IsNullOrWhiteSpace(_creds.Patreon.AccessToken))
+                {
+                    Log.Warning("In order to use patreon reward commands, " +
+                                "you need to specify CampaignId and AccessToken in creds.yml");
                     return;
+                }
 
                 if (DateTime.UtcNow.Day < 5)
                 {

src/NadekoBot/Modules/Utility/Services/PatreonRewardsService.cs

@@ -2,17 +2,21 @@
 using NadekoBot.Services;
 using NadekoBot.Services.Database.Models;
 using NadekoBot.Modules.Utility.Common.Patreon;
-using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Web;
 using Discord;
 using NadekoBot.Modules.Gambling.Services;
 using NadekoBot.Extensions;
 using Serilog;
+using StackExchange.Redis;
+using JsonSerializer = System.Text.Json.JsonSerializer;
 
 namespace NadekoBot.Modules.Utility.Services
 {
@@ -20,96 +24,195 @@ namespace NadekoBot.Modules.Utility.Services
     {
         private readonly SemaphoreSlim getPledgesLocker = new SemaphoreSlim(1, 1);
 
-        private PatreonUserAndReward[] _pledges;
-
         private readonly Timer _updater;
         private readonly SemaphoreSlim claimLockJustInCase = new SemaphoreSlim(1, 1);
         
         public TimeSpan Interval { get; } = TimeSpan.FromMinutes(3);
-        private readonly IBotCredentials _creds;
         private readonly DbService _db;
         private readonly ICurrencyService _currency;
         private readonly GamblingConfigService _gamblingConfigService;
+        private readonly ConnectionMultiplexer _redis;
+        private readonly IBotCredsProvider _credsProvider;
         private readonly IHttpClientFactory _httpFactory;
         private readonly IEmbedBuilderService _eb;
         private readonly DiscordSocketClient _client;
 
         public DateTime LastUpdate { get; private set; } = DateTime.UtcNow;
 
-        public PatreonRewardsService(IBotCredentials creds, DbService db,
-            ICurrencyService currency, IHttpClientFactory factory, IEmbedBuilderService eb,
-            DiscordSocketClient client, GamblingConfigService gamblingConfigService)
+        public PatreonRewardsService(
+            DbService db,
+            ICurrencyService currency,
+            IHttpClientFactory factory,
+            IEmbedBuilderService eb,
+            DiscordSocketClient client,
+            GamblingConfigService gamblingConfigService,
+            ConnectionMultiplexer redis,
+            IBotCredsProvider credsProvider)
         {
-            _creds = creds;
             _db = db;
             _currency = currency;
             _gamblingConfigService = gamblingConfigService;
+            _redis = redis;
+            _credsProvider = credsProvider;
             _httpFactory = factory;
             _eb = eb;
             _client = client;
 
             if (client.ShardId == 0)
-                _updater = new Timer(async _ => await RefreshPledges().ConfigureAwait(false),
+                _updater = new Timer(async _ => await RefreshPledges(_credsProvider.GetCreds()).ConfigureAwait(false),
                     null, TimeSpan.Zero, Interval);
         }
 
-        public async Task RefreshPledges()
+        private DateTime LastAccessTokenUpdate(IBotCredentials creds)
         {
-            if (string.IsNullOrWhiteSpace(_creds.PatreonAccessToken)
-                || string.IsNullOrWhiteSpace(_creds.PatreonAccessToken))
-                return;
+            var db = _redis.GetDatabase();
+            var val = db.StringGet($"{creds.RedisKey()}_patreon_update");
 
+            if (val == default)
+                return DateTime.MinValue;
+
+            var lastTime = DateTime.FromBinary((long)val);
+            return lastTime;
+        }
+
+
+        private sealed class PatreonRefreshData
+        {
+            [JsonPropertyName("access_token")]
+            public string AccessToken { get; set; }
+            
+            [JsonPropertyName("refresh_token")]
+            public string RefreshToken { get; set; }
+            
+            [JsonPropertyName("expires_in")]
+            public long ExpiresIn { get; set; }
+            
+            [JsonPropertyName("scope")]
+            public string Scope { get; set; }
+            
+            [JsonPropertyName("token_type")]
+            public string TokenType { get; set; }
+        }
+        
+        private async Task<bool> UpdateAccessToken(IBotCredentials creds)
+        {
+            Log.Information("Updating patreon access token...");
+            try
+            {
+                using var http = _httpFactory.CreateClient();
+                var res = await http.PostAsync($"https://www.patreon.com/api/oauth2/token" +
+                                               $"?grant_type=refresh_token" +
+                                               $"&refresh_token={creds.Patreon.RefreshToken}" +
+                                               $"&client_id={creds.Patreon.ClientId}" +
+                                               $"&client_secret={creds.Patreon.ClientSecret}",
+                    new StringContent(string.Empty));
+
+                res.EnsureSuccessStatusCode();
+
+                var data = await res.Content.ReadFromJsonAsync<PatreonRefreshData>();
+
+                if (data is null)
+                    throw new("Invalid patreon response.");
+                
+                _credsProvider.ModifyCredsFile(oldData =>
+                {
+                    oldData.Patreon.AccessToken = data.AccessToken;
+                    oldData.Patreon.RefreshToken = data.RefreshToken;
+                });
+
+                var db = _redis.GetDatabase();
+                await db.StringSetAsync($"{creds.RedisKey()}_patreon_update", DateTime.UtcNow.ToBinary());
+                return true;
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Failed updating patreon access token: {ErrorMessage}", ex.ToString());
+                return false;
+            }
+        }
+
+        private bool HasPatreonCreds(IBotCredentials creds)
+        {
+            var _1 = creds.Patreon.ClientId;
+            var _2 = creds.Patreon.ClientSecret;
+            var _4 = creds.Patreon.RefreshToken;
+            return !(string.IsNullOrWhiteSpace(_1)
+                     || string.IsNullOrWhiteSpace(_2)
+                     || string.IsNullOrWhiteSpace(_4));
+        }
+
+        public async Task RefreshPledges(IBotCredentials creds)
+        {
             if (DateTime.UtcNow.Day < 5)
                 return;
 
+            // if the user has the necessary patreon creds
+            // and the access token expired or doesn't exist
+            // -> update access token
+            if (!HasPatreonCreds(creds))
+                return;
+
+            if (LastAccessTokenUpdate(creds).Month < DateTime.UtcNow.Month
+                || string.IsNullOrWhiteSpace(creds.Patreon.AccessToken))
+            {
+                var success = await UpdateAccessToken(creds);
+                if (!success)
+                    return;
+            }
+
             LastUpdate = DateTime.UtcNow;
             await getPledgesLocker.WaitAsync().ConfigureAwait(false);
             try
             {
-                var rewards = new List<PatreonPledge>();
+                
+                var members = new List<PatreonMember>();
                 var users = new List<PatreonUser>();
                 using (var http = _httpFactory.CreateClient())
                 {
                     http.DefaultRequestHeaders.Clear();
-                    http.DefaultRequestHeaders.Add("Authorization", "Bearer " + _creds.PatreonAccessToken);
-                    var data = new PatreonData()
-                    {
-                        Links = new PatreonDataLinks()
-                        {
-                            next = $"https://api.patreon.com/oauth2/api/campaigns/{_creds.PatreonCampaignId}/pledges"
-                        }
-                    };
+                    http.DefaultRequestHeaders.TryAddWithoutValidation("Authorization",
+                        $"Bearer {creds.Patreon.AccessToken}");
+
+                    var page = $"https://www.patreon.com/api/oauth2/v2/campaigns/{creds.Patreon.CampaignId}/members" +
+                               "?fields%5Bmember%5D=full_name,currently_entitled_amount_cents" +
+                               "&fields%5Buser%5D=social_connections" +
+                               "&include=user";
+                    PatreonResponse data = null;
                     do
                     {
-                        var res = await http.GetStringAsync(data.Links.next)
-                            .ConfigureAwait(false);
-                        data = JsonConvert.DeserializeObject<PatreonData>(res);
-                        var pledgers = data.Data.Where(x => x["type"].ToString() == "pledge");
-                        rewards.AddRange(pledgers.Select(x => JsonConvert.DeserializeObject<PatreonPledge>(x.ToString()))
-                            .Where(x => x.attributes.declined_since is null));
-                        if (data.Included != null)
-                        {
-                            users.AddRange(data.Included
-                                .Where(x => x["type"].ToString() == "user")
-                                .Select(x => JsonConvert.DeserializeObject<PatreonUser>(x.ToString())));
-                        }
-                    } while (!string.IsNullOrWhiteSpace(data.Links.next));
+                        var res = await http.GetStringAsync(page).ConfigureAwait(false);
+                        data = JsonSerializer.Deserialize<PatreonResponse>(res);
+
+                        if (data is null)
+                            break;
+                        
+                        members.AddRange(data.Data);
+                        users.AddRange(data.Included);
+                    } while (!string.IsNullOrWhiteSpace(page = data?.Links?.Next));
                 }
-                var toSet = rewards.Join(users, (r) => r.relationships?.patron?.data?.id, (u) => u.id, (x, y) => new PatreonUserAndReward()
-                {
-                    User = y,
-                    Reward = x,
-                }).ToArray();
 
-                _pledges = toSet;
-
-                foreach (var pledge in _pledges)
-                {
-                    var userIdStr = pledge.User.attributes?.social_connections?.discord?.user_id;
-                    if (userIdStr != null && ulong.TryParse(userIdStr, out var userId))
+                var userData = members.Join(users,
+                    (m) => m.Relationships.User.Data.Id,
+                    (u) => u.Id,
+                    (m, u) => new
                     {
-                        await ClaimReward(userId);
-                    }
+                        PatreonUserId = m.Relationships.User.Data.Id,
+                        UserId = ulong.TryParse(u.Attributes?.SocialConnections?.Discord?.UserId ?? string.Empty,
+                            out var userId)
+                            ? userId
+                            : 0,
+                        EntitledTo = m.Attributes.CurrentlyEntitledAmountCents,
+                    })
+                    .Where(x => x is
+                    {
+                        UserId: not 0,
+                        EntitledTo: > 0
+                    })
+                    .ToList();
+
+                foreach (var pledge in userData)
+                {
+                    await ClaimReward(pledge.UserId, pledge.PatreonUserId, pledge.EntitledTo);
                 }
             }
             catch (Exception ex)
@@ -123,80 +226,73 @@ namespace NadekoBot.Modules.Utility.Services
 
         }
 
-        public async Task<int> ClaimReward(ulong userId)
+        public async Task<int> ClaimReward(ulong userId, string patreonUserId, int cents)
         {
             await claimLockJustInCase.WaitAsync().ConfigureAwait(false);
             var settings = _gamblingConfigService.Data;
             var now = DateTime.UtcNow;
             try
             {
-                var datas = _pledges?.Where(x => x.User.attributes?.social_connections?.discord?.user_id == userId.ToString())
-                    ?? Enumerable.Empty<PatreonUserAndReward>();
+                var eligibleFor = (int)(cents * settings.PatreonCurrencyPerCent);
 
-                var totalAmount = 0;
-                foreach (var data in datas)
+                using (var uow = _db.GetDbContext())
                 {
-                    var amount = (int)(data.Reward.attributes.amount_cents * settings.PatreonCurrencyPerCent);
+                    var users = uow.Set<RewardedUser>();
+                    var usr = await users.FirstOrDefaultAsync(x => x.PatreonUserId == patreonUserId);
 
-                    using (var uow = _db.GetDbContext())
+                    if (usr is null)
                     {
-                        var users = uow.Set<RewardedUser>();
-                        var usr = users.FirstOrDefault(x => x.PatreonUserId == data.User.id);
-
-                        if (usr is null)
+                        users.Add(new RewardedUser()
                         {
-                            users.Add(new RewardedUser()
-                            {
-                                PatreonUserId = data.User.id,
-                                LastReward = now,
-                                AmountRewardedThisMonth = amount,
-                            });
+                            PatreonUserId = patreonUserId,
+                            LastReward = now,
+                            AmountRewardedThisMonth = eligibleFor,
+                        });
 
-                            await uow.SaveChangesAsync();
+                        await uow.SaveChangesAsync();
 
-                            await _currency.AddAsync(userId, "Patreon reward - new", amount, gamble: true);
-                            totalAmount += amount;
-                            
-                            Log.Information($"Sending new currency reward to {userId}");
-                            await SendMessageToUser(userId, $"Thank you for your pledge! " +
-                                                            $"You've been awarded **{amount}**{settings.Currency.Sign} !");
-                            continue;
-                        }
-
-                        if (usr.LastReward.Month != now.Month)
-                        {
-                            usr.LastReward = now;
-                            usr.AmountRewardedThisMonth = amount;
-
-                            await uow.SaveChangesAsync();
-
-                            await _currency.AddAsync(userId, "Patreon reward - recurring", amount, gamble: true);
-                            totalAmount += amount;
-                            Log.Information($"Sending recurring currency reward to {userId}");
-                            await SendMessageToUser(userId, $"Thank you for your continued support! " +
-                                                            $"You've been awarded **{amount}**{settings.Currency.Sign} for this month's support!");
-                            continue;
-                        }
-
-                        if (usr.AmountRewardedThisMonth < amount)
-                        {
-                            var toAward = amount - usr.AmountRewardedThisMonth;
-
-                            usr.LastReward = now;
-                            usr.AmountRewardedThisMonth = amount;
-                            await uow.SaveChangesAsync();
-
-                            await _currency.AddAsync(userId, "Patreon reward - update", toAward, gamble: true);
-                            totalAmount += toAward;
-                            Log.Information($"Sending updated currency reward to {userId}");
-                            await SendMessageToUser(userId, $"Thank you for increasing your pledge! " +
-                                $"You've been awarded an additional **{toAward}**{settings.Currency.Sign} !");
-                            continue;
-                        }
+                        await _currency.AddAsync(userId, "Patreon reward - new", eligibleFor, gamble: true);
+                        
+                        Log.Information($"Sending new currency reward to {userId}");
+                        await SendMessageToUser(userId, $"Thank you for your pledge! " +
+                                                        $"You've been awarded **{eligibleFor}**{settings.Currency.Sign} !");
+                        return eligibleFor;
                     }
-                }
 
-                return totalAmount;
+                    if (usr.LastReward.Month != now.Month)
+                    {
+                        usr.LastReward = now;
+                        usr.AmountRewardedThisMonth = eligibleFor;
+
+                        await uow.SaveChangesAsync();
+
+                        await _currency.AddAsync(userId, "Patreon reward - recurring", eligibleFor, gamble: true);
+
+                        Log.Information($"Sending recurring currency reward to {userId}");
+                        await SendMessageToUser(userId, $"Thank you for your continued support! " +
+                                                        $"You've been awarded **{eligibleFor}**{settings.Currency.Sign} for this month's support!");
+
+                        return eligibleFor;
+                    }
+
+                    if (usr.AmountRewardedThisMonth < eligibleFor)
+                    {
+                        var toAward = eligibleFor - usr.AmountRewardedThisMonth;
+
+                        usr.LastReward = now;
+                        usr.AmountRewardedThisMonth = toAward;
+                        await uow.SaveChangesAsync();
+
+                        await _currency.AddAsync(userId, "Patreon reward - update", toAward, gamble: true);
+                        
+                        Log.Information($"Sending updated currency reward to {userId}");
+                        await SendMessageToUser(userId, $"Thank you for increasing your pledge! " +
+                                                        $"You've been awarded an additional **{toAward}**{settings.Currency.Sign} !");
+                        return toAward;
+                    }
+
+                    return 0;
+                }
             }
             finally
             {

src/NadekoBot/Services/Impl/BotCredsProvider.cs

@@ -10,7 +10,14 @@ using Serilog;
 
 namespace NadekoBot.Services
 {
-    public sealed class BotCredsProvider
+    public interface IBotCredsProvider
+    {
+        public void Reload();
+        public IBotCredentials GetCreds();
+        public void ModifyCredsFile(Action<Creds> func);
+    }
+    
+    public sealed class BotCredsProvider : IBotCredsProvider
     {
         private readonly int? _totalShards;
         private const string _credsFileName = "creds.yml";
@@ -27,7 +34,7 @@ namespace NadekoBot.Services
         
 
         private readonly object reloadLock = new object();
-        private void Reload()
+        public void Reload()
         {
             lock (reloadLock)
             {
@@ -102,6 +109,19 @@ namespace NadekoBot.Services
             Reload();
         }
 
+        public void ModifyCredsFile(Action<Creds> func)
+        {
+            var ymlData = File.ReadAllText(_credsFileName);
+            var creds = Yaml.Deserializer.Deserialize<Creds>(ymlData);
+
+            func(creds);
+
+            ymlData = Yaml.Serializer.Serialize(creds);
+            File.WriteAllText(_credsFileName, ymlData);
+            
+            Reload();
+        }
+        
         /// <summary>
         /// Checks if there's a V2 credentials file present, loads it if it exists,
         /// converts it to new model, and saves it to YAML. Also backs up old credentials to credentials.json.bak
@@ -157,6 +177,6 @@ namespace NadekoBot.Services
 
         }
 
-        public Creds GetCreds() => _creds;
+        public IBotCredentials GetCreds() => _creds;
     }
 }

src/NadekoBot/_Extensions/Extensions.cs

@@ -357,7 +357,7 @@ namespace NadekoBot.Extensions
 
         public static bool IsImage(this HttpResponseMessage msg, out string mimeType)
         {
-            mimeType = msg.Content.Headers.ContentType.MediaType;
+            mimeType = msg.Content.Headers.ContentType?.MediaType;
             if (mimeType == "image/png"
                     || mimeType == "image/jpeg"
                     || mimeType == "image/gif")

src/NadekoBot/creds_example.yml

@@ -31,11 +31,9 @@ votes:
 # Patreon auto reward system settings.
 # go to https://www.patreon.com/portal -> my clients -> create client
 patreon:
-# Access token. You have to manually update this 1st of each month by refreshing the token on https://patreon.com/portal
+  clientId: 
   accessToken: ''
-  # Unused atm
   refreshToken: ''
-  # Unused atm
   clientSecret: ''
   # Campaign ID of your patreon page. Go to your patreon page (make sure you're logged in) and type "prompt('Campaign ID', window.patreon.bootstrap.creator.data.id);" in the console. (ctrl + shift + i)
   campaignId: ''