Added functionality of /follow and /unfollow

src/providers/twitch/twitchapi.cpp

@@ -0,0 +1,37 @@
+#include "providers/twitch/twitchapi.hpp"
+
+#include "Application.hpp"
+#include "common/UrlFetch.hpp"
+#include "controllers/accounts/AccountController.hpp"
+#include "providers/twitch/TwitchCommon.hpp"
+
+#include <QString>
+#include <QThread>
+
+namespace chatterino {
+
+void TwitchApi::FindUserId(const QString user, std::function<void(QString)> callback)
+{
+    QString requestUrl("https://api.twitch.tv/kraken/users?login=" + user +
+                       "&api_version=5&client_id=" + getDefaultClientID());
+    NetworkRequest request(requestUrl);
+    request.setCaller(QThread::currentThread());
+    request.setTimeout(30000);
+    request.onSuccess([callback](auto result) mutable {
+        QString userId;
+
+        auto root = result.parseJson();
+        if (root.value("users").toArray().isEmpty()) {
+            callback("");
+            return true;
+        }
+        userId = root.value("users").toArray()[0].toObject().value("_id").toString();
+        callback(userId);
+        return true;
+    });
+
+    request.execute();
+    return;
+}
+
+}  // namespace chatterino

src/providers/twitch/twitchapi.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "common/Singleton.hpp"
+
+#include <QString>
+
+namespace chatterino {
+
+class TwitchApi
+{
+public:
+    static void FindUserId(const QString user, std::function<void(QString)> callback);
+
+private:
+};
+
+}  // namespace chatterino