you can now log in with username/oauth token from an env variable

useful while testing (especially on stream)

accountmanager.cpp

@@ -2,11 +2,31 @@
 
 namespace chatterino {
 
+namespace {
+
+inline QString getEnvString(const char *target)
+{
+    char *val = std::getenv(target);
+    if (val == nullptr) {
+        return QString();
+    }
+
+    return QString(val);
+}
+
+}  // namespace
+
 AccountManager::AccountManager()
     : _twitchAnon("justinfan64537", "", "")
     , _twitchUsers()
     , _twitchUsersMutex()
 {
+    QString envUsername = getEnvString("CHATTERINO2_USERNAME");
+    QString envOauthToken = getEnvString("CHATTERINO2_OAUTH");
+
+    if (!envUsername.isEmpty() && !envOauthToken.isEmpty()) {
+        this->addTwitchUser(twitch::TwitchUser(envUsername, envOauthToken, ""));
+    }
 }
 
 twitch::TwitchUser &AccountManager::getTwitchAnon()
@@ -14,6 +34,17 @@ twitch::TwitchUser &AccountManager::getTwitchAnon()
     return _twitchAnon;
 }
 
+twitch::TwitchUser &AccountManager::getTwitchUser()
+{
+    std::lock_guard<std::mutex> lock(_twitchUsersMutex);
+
+    if (_twitchUsers.size() == 0) {
+        return _twitchAnon;
+    }
+
+    return _twitchUsers.front();
+}
+
 std::vector<twitch::TwitchUser> AccountManager::getTwitchUsers()
 {
     return std::vector<twitch::TwitchUser>(_twitchUsers);