backend: cache game metadata between scans

src/backend/AppSettings.h

@@ -42,6 +42,7 @@ struct General {
     bool fullscreen = true;
     bool mouse_support = true;
     bool verify_files = true;
+    bool scan_on_launch = true;
     bool show_missing_games = false;
     QString locale;
     QString theme;

src/backend/Backend.cpp

@@ -212,7 +212,7 @@ Backend::Backend(const CliArgs& args)
     QObject::connect(m_api_private->settings().keyEditorPtr(), &model::KeyEditor::keysChanged,
                      m_api_public->keysPtr(), &model::Keys::refresh_keys);
     QObject::connect(m_api_private->settingsPtr(), &model::Settings::providerReloadingRequested,
-                     [this](){ onScanRequested(); });
+                     [this](){ onScanRequested(true); });
 
     QObject::connect(m_api_public, &model::ApiObject::favoritesChanged,
                      [this](){ onFavoritesChanged(); });
@@ -241,13 +241,13 @@ void Backend::start()
 {
     m_api_private->settings().postInit();
     onProcessFinished();
-    onScanRequested();
+    onScanRequested(AppSettings::general.scan_on_launch);
 }
 
-void Backend::onScanRequested()
+void Backend::onScanRequested(const bool force_refresh)
 {
     m_api_public->clearGameData();
-    m_providerman->run();
+    m_providerman->run(force_refresh);
 }
 
 void Backend::onScanFinished()

src/backend/Backend.h

@@ -50,7 +50,7 @@ class Backend {
     ProcessLauncher* m_launcher;
     ProviderManager* m_providerman;
 
-    void onScanRequested();
+    void onScanRequested(bool force_refresh = false);
     void onScanFinished();
     void onFavoritesChanged();
     void onProcessLaunched();

src/backend/model/internal/settings/Settings.cpp

@@ -115,6 +115,17 @@ void Settings::setVerifyFiles(bool new_val)
     emit verifyFilesChanged();
 }
 
+void Settings::setScanOnLaunch(bool new_val)
+{
+    if (new_val == AppSettings::general.scan_on_launch)
+        return;
+
+    AppSettings::general.scan_on_launch = new_val;
+    AppSettings::save_config();
+
+    emit scanOnLaunchChanged();
+}
+
 void Settings::setShowMissingGames(bool new_val)
 {
     if (new_val == AppSettings::general.show_missing_games)

src/backend/model/internal/settings/Settings.h

@@ -42,6 +42,9 @@ class Settings : public QObject {
     Q_PROPERTY(bool verifyFiles
                READ verifyFiles WRITE setVerifyFiles
                NOTIFY verifyFilesChanged)
+    Q_PROPERTY(bool scanOnLaunch
+               READ scanOnLaunch WRITE setScanOnLaunch
+               NOTIFY scanOnLaunchChanged)
     Q_PROPERTY(bool showMissingGames
                READ showMissingGames WRITE setShowMissingGames
                NOTIFY showMissingGamesChanged)
@@ -66,6 +69,9 @@ class Settings : public QObject {
     bool verifyFiles() const { return AppSettings::general.verify_files; }
     void setVerifyFiles(bool);
 
+    bool scanOnLaunch() const { return AppSettings::general.scan_on_launch; }
+    void setScanOnLaunch(bool);
+
     bool showMissingGames() const { return AppSettings::general.show_missing_games; }
     void setShowMissingGames(bool);
 
@@ -82,6 +88,7 @@ class Settings : public QObject {
     void fullscreenChanged();
     void mouseSupportChanged();
     void verifyFilesChanged();
+    void scanOnLaunchChanged();
     void showMissingGamesChanged();
     void gameDirsChanged();
     void androidDirsChanged();

src/backend/parsers/SettingsFile.cpp

@@ -69,6 +69,7 @@ ConfigEntryMaps::ConfigEntryMaps()
         { QStringLiteral("fullscreen"), GeneralOption::FULLSCREEN },
         { QStringLiteral("input-mouse-support"), GeneralOption::MOUSE_SUPPORT },
         { QStringLiteral("verify-files"), GeneralOption::VERIFY_FILES },
+        { QStringLiteral("scan-on-launch"), GeneralOption::SCAN_ON_LAUNCH },
         { QStringLiteral("show-missing-games"), GeneralOption::SHOW_MISSING_GAMES },
         { QStringLiteral("locale"), GeneralOption::LOCALE },
         { QStringLiteral("theme"), GeneralOption::THEME },
@@ -176,6 +177,10 @@ void LoadContext::handle_general_attrib(const size_t lineno, const QString& key,
             if (!store_bool_maybe(val, AppSettings::general.verify_files))
                 log_needs_bool(lineno, key);
             break;
+        case ConfigEntryGeneralOption::SCAN_ON_LAUNCH:
+            if (!store_bool_maybe(val, AppSettings::general.scan_on_launch))
+                log_needs_bool(lineno, key);
+            break;
         case ConfigEntryGeneralOption::SHOW_MISSING_GAMES:
             if (!store_bool_maybe(val, AppSettings::general.show_missing_games))
                 log_needs_bool(lineno, key);
@@ -312,6 +317,7 @@ void SaveContext::print_general(QTextStream& stream) const
         { GeneralOption::FULLSCREEN, AppSettings::general.fullscreen ? STR_TRUE : STR_FALSE },
         { GeneralOption::MOUSE_SUPPORT, AppSettings::general.mouse_support ? STR_TRUE : STR_FALSE },
         { GeneralOption::VERIFY_FILES, AppSettings::general.verify_files ? STR_TRUE : STR_FALSE },
+        { GeneralOption::SCAN_ON_LAUNCH, AppSettings::general.scan_on_launch ? STR_TRUE : STR_FALSE },
         { GeneralOption::SHOW_MISSING_GAMES, AppSettings::general.show_missing_games ? STR_TRUE : STR_FALSE },
         { GeneralOption::LOCALE, AppSettings::general.locale },
         { GeneralOption::THEME, theme_path },

src/backend/parsers/SettingsFile.h

@@ -38,6 +38,7 @@ enum class ConfigEntryGeneralOption : unsigned char {
     FULLSCREEN,
     MOUSE_SUPPORT,
     VERIFY_FILES,
+    SCAN_ON_LAUNCH,
     SHOW_MISSING_GAMES,
     LOCALE,
     THEME,

src/backend/providers/CMakeLists.txt

@@ -7,6 +7,8 @@ target_sources(pegasus-backend PRIVATE
     ProviderUtils.h
     SearchContext.cpp
     SearchContext.h
+    GameDataCache.cpp
+    GameDataCache.h
 )