Implement /ignore and /unignore commands

Simplify authorized network requests for Twitch V5 api
add onShow virtual function to settings pages if they need to be refreshed when shown
Actually ignoring messages from ignored users is still not implemented

Working on #247

src/providers/twitch/twitchaccount.cpp

@@ -1,5 +1,9 @@
 #include "providers/twitch/twitchaccount.hpp"
+
 #include "const.hpp"
+#include "debug/log.hpp"
+#include "util/networkrequest.hpp"
+#include "util/urlfetch.hpp"
 
 namespace chatterino {
 namespace providers {
@@ -68,6 +72,146 @@ bool TwitchAccount::isAnon() const
     return this->_isAnon;
 }
 
+void TwitchAccount::loadIgnores()
+{
+    QString url("https://api.twitch.tv/kraken/users/" + this->getUserId() + "/blocks");
+
+    util::NetworkRequest req(url);
+    req.setRequestType(util::NetworkRequest::GET);
+    req.setCaller(QThread::currentThread());
+    req.makeAuthorizedV5(this->getOAuthClient(), this->getOAuthToken());
+    req.onSuccess([=](const rapidjson::Document &document) {
+        if (!document.IsObject()) {
+            return false;
+        }
+
+        auto blocksIt = document.FindMember("blocks");
+        if (blocksIt == document.MemberEnd()) {
+            return false;
+        }
+        const auto &blocks = blocksIt->value;
+
+        if (!blocks.IsArray()) {
+            return false;
+        }
+
+        {
+            std::lock_guard<std::mutex> lock(this->ignoresMutex);
+            this->ignores.clear();
+
+            for (const auto &block : blocks.GetArray()) {
+                if (!block.IsObject()) {
+                    continue;
+                }
+                auto userIt = block.FindMember("user");
+                if (userIt == block.MemberEnd()) {
+                    continue;
+                }
+                this->ignores.insert(TwitchUser::fromJSON(userIt->value));
+            }
+        }
+
+        return true;
+    });
+
+    req.execute();
+}
+
+void TwitchAccount::ignore(const QString &targetName,
+                           std::function<void(const QString &message)> onFinished)
+{
+    util::twitch::getUserID(targetName, QThread::currentThread(), [=](QString targetUserID) {
+        QString url("https://api.twitch.tv/kraken/users/" + this->getUserId() + "/blocks/" +
+                    targetUserID);
+
+        util::NetworkRequest req(url);
+        req.setRequestType(util::NetworkRequest::PUT);
+        req.setCaller(QThread::currentThread());
+        req.makeAuthorizedV5(this->getOAuthClient(), this->getOAuthToken());
+
+        req.onError([=](int errorCode) {
+            onFinished("An unknown error occured while trying to ignore user " + targetName + " (" +
+                       QString::number(errorCode) + ")");
+
+            return true;
+        });
+
+        req.onSuccess([=](const rapidjson::Document &document) {
+            if (!document.IsObject()) {
+                onFinished("Bad JSON data while ignoring user " + targetName);
+                return false;
+            }
+
+            auto userIt = document.FindMember("user");
+            if (userIt == document.MemberEnd()) {
+                onFinished("Bad JSON data while ignoring user (missing user) " + targetName);
+                return false;
+            }
+
+            auto ignoredUser = TwitchUser::fromJSON(userIt->value);
+            {
+                std::lock_guard<std::mutex> lock(this->ignoresMutex);
+
+                auto res = this->ignores.insert(ignoredUser);
+                if (!res.second) {
+                    const TwitchUser &existingUser = *(res.first);
+                    existingUser.update(ignoredUser);
+                    onFinished("User " + targetName + " is already ignored");
+                    return false;
+                }
+            }
+            onFinished("Successfully ignored user " + targetName);
+
+            return true;
+        });
+
+        req.execute();
+    });
+}
+
+void TwitchAccount::unignore(const QString &targetName,
+                             std::function<void(const QString &message)> onFinished)
+{
+    util::twitch::getUserID(targetName, QThread::currentThread(), [=](QString targetUserID) {
+        QString url("https://api.twitch.tv/kraken/users/" + this->getUserId() + "/blocks/" +
+                    targetUserID);
+
+        util::NetworkRequest req(url);
+        req.setRequestType(util::NetworkRequest::DELETE);
+        req.setCaller(QThread::currentThread());
+        req.makeAuthorizedV5(this->getOAuthClient(), this->getOAuthToken());
+
+        req.onError([=](int errorCode) {
+            onFinished("An unknown error occured while trying to unignore user " + targetName +
+                       " (" + QString::number(errorCode) + ")");
+
+            return true;
+        });
+
+        req.onSuccess([=](const rapidjson::Document &document) {
+            TwitchUser ignoredUser;
+            ignoredUser.id = targetUserID;
+            {
+                std::lock_guard<std::mutex> lock(this->ignoresMutex);
+
+                this->ignores.erase(ignoredUser);
+            }
+            onFinished("Successfully unignored user " + targetName);
+
+            return true;
+        });
+
+        req.execute();
+    });
+}
+
+std::set<TwitchUser> TwitchAccount::getIgnores() const
+{
+    std::lock_guard<std::mutex> lock(this->ignoresMutex);
+
+    return this->ignores;
+}
+
 }  // namespace twitch
 }  // namespace providers
 }  // namespace chatterino