[Card Database] Improve loading times through binary cache (#7051)

* [Card Database] Improve loading times through binary cache

Took 10 minutes


Took 9 minutes

Took 16 seconds

* [Card Database] Remove lib qt include

Took 18 minutes


Took 14 seconds

* Downgrade to 6.3 datastream

Took 5 minutes

* go up to 6.4 datastream

Took 1 minute

* Address comments

* Small bug fixes

Took 20 minutes


Took 10 seconds

* More fixes.

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* Even more fixes.

Took 11 minutes


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* More fixes.

Took 6 minutes

Took 26 seconds

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* Namespace instead of class

Took 6 minutes

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

libcockatrice_card/libcockatrice/card/database/card_database.h

@@ -2,6 +2,7 @@
 #define CARDDATABASE_H
 
 #include "../set/card_set_list.h"
+#include "card_database_data.h"
 #include "card_database_loader.h"
 #include "card_database_querier.h"
 
@@ -54,16 +55,17 @@ protected:
     CardDatabaseQuerier *querier;
 
 private:
-    /**
-     * @brief Check for sets that are unknown and emit signals if needed.
-     */
-    void checkUnknownSets();
-
     /**
      * @brief Refreshes the cached reverse-related cards for all cards.
      */
     void refreshCachedReverseRelatedCards();
 
+    /**
+     * @brief Refreshes the cached reverse-related cards for the given card map.
+     * @param cardMap Map of cards to process.
+     */
+    void refreshCachedReverseRelatedCards(CardNameMap &cardMap);
+
     /** @brief Mutexes for thread safety. */
     QBasicMutex *clearDatabaseMutex = new QBasicMutex(), *addCardMutex = new QBasicMutex(),
                 *removeCardMutex = new QBasicMutex();
@@ -127,8 +129,25 @@ public:
     /** @brief Marks all sets as known. */
     void markAllSetsAsKnown();
 
-    /** @brief Notifies listeners that enabled sets changed. */
-    void notifyEnabledSetsChanged();
+    /**
+     * @brief Notifies listeners that enabled sets changed.
+     * @param recomputeCachedSets When true, every card's cached set-name / alt-name
+     *        data is recomputed (needed only when enabled-set state actually
+     *        changed). Pass false after a plain reload, where enabled-set state is
+     *        unchanged and the cached data is still valid.
+     */
+    void notifyEnabledSetsChanged(bool recomputeCachedSets = true);
+
+    /**
+     * @brief Check for sets that are unknown and emit signals if needed.
+     *
+     * Called from MainWindow::startupConfigCheck() after signal connections are
+     * live (the front-loaded parse in main() runs before MainWindow exists, so
+     * signals emitted there would have no receivers).  May also be called by
+     * the loader via the friend declaration.  Has side effects: enables all
+     * sets when none are enabled (first-run), marks all sets as known.
+     */
+    void checkUnknownSets();
 
     ICardSetPriorityController *getPriorityController()
     {
@@ -159,10 +178,26 @@ public slots:
      */
     bool saveCustomTokensToFile();
 
+    /**
+     * @brief Replaces the entire contents of the database with the provided
+     *        snapshot in a single operation. Intended to be called once a
+     *        background load has finished building a CardDatabaseData, so that
+     *        observers never see a partially-populated database.
+     * @param data The fully-built snapshot to adopt.
+     */
+    void swapInDatabaseData(CardDatabaseData data);
+
 signals:
     /** @brief Emitted when the card database has finished loading successfully. */
     void cardDatabaseLoadingFinished();
 
+    /**
+     * @brief Emitted once after the live database contents have been replaced
+     *        by a freshly loaded snapshot. Models should rebuild from the
+     *        database in a single batch rather than reacting to per-card adds.
+     */
+    void cardDatabaseReset();
+
     /** @brief Emitted when the card database fails to load. */
     void cardDatabaseLoadingFailed();