DarkflameServer/dMasterServer/ObjectIDManager.cpp

#include "ObjectIDManager.h"

// Custom Classes
#include "Database.h"
#include "dLogger.h"

// Static Variables
ObjectIDManager *ObjectIDManager::m_Address = nullptr;

//! Initializes the manager
void ObjectIDManager::Initialize(dLogger *logger) {
    this->mLogger = logger;
    this->currentPersistentID = 1;

    try {
        sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
            "SELECT last_object_id FROM object_id_tracker");

        sql::ResultSet *result = stmt->executeQuery();
        auto next = result->next();

        if (!next) {
            sql::PreparedStatement *insertStmt = Database::CreatePreppedStmt(
                "INSERT INTO object_id_tracker VALUES (1)");

            insertStmt->execute();

            delete insertStmt;

            return;
        }

        while (next) {
            this->currentPersistentID =
                result->getInt(1) > 0 ? result->getInt(1) : 1;
            next = result->next();
        }

        delete result;
        delete stmt;
    } catch (sql::SQLException &e) {
        mLogger->Log("ObjectIDManager", "Unable to fetch max persistent object "
                                        "ID in use. Defaulting to 1.");
        mLogger->Log("ObjectIDManager", "SQL error: %s", e.what());
        this->currentPersistentID = 1;
    }
}

//! Generates a new persistent ID
uint32_t ObjectIDManager::GeneratePersistentID(void) {
    uint32_t toReturn = ++this->currentPersistentID;

    // So we peroidically save our ObjID to the database:
    if (toReturn % 25 == 0) { // TEMP: DISABLED FOR DEBUG / DEVELOPMENT!
        sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
            "UPDATE object_id_tracker SET last_object_id=?");
        stmt->setUInt(1, toReturn);
        stmt->execute();
        delete stmt;
    }

    return toReturn;
}

void ObjectIDManager::SaveToDatabase() {
    sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
        "UPDATE object_id_tracker SET last_object_id=?");
    stmt->setUInt(1, currentPersistentID);
    stmt->execute();
    delete stmt;
}