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mkdirp from \"mkdirp\"\nimport path from \"path\"\nimport { DriverPackageNotInstalledError } from \"../../error\"\nimport { PlatformTools } from \"../../platform/PlatformTools\"\nimport { DataSource } from \"../../data-source\"\nimport { ColumnType } from \"../types/ColumnTypes\"\nimport { QueryRunner } from \"../../query-runner/QueryRunner\"\nimport { AbstractSqliteDriver } from \"../sqlite-abstract/AbstractSqliteDriver\"\nimport { BetterSqlite3ConnectionOptions } from \"./BetterSqlite3ConnectionOptions\"\nimport { BetterSqlite3QueryRunner } from \"./BetterSqlite3QueryRunner\"\nimport { ReplicationMode } from \"../types/ReplicationMode\"\nimport { filepathToName, isAbsolute } from \"../../util/PathUtils\"\n\n/**\n * Organizes communication with sqlite DBMS.\n */\nexport class BetterSqlite3Driver extends AbstractSqliteDriver {\n    // -------------------------------------------------------------------------\n    // Public Implemented Properties\n    // -------------------------------------------------------------------------\n\n    /**\n     * Connection options.\n     */\n    options: BetterSqlite3ConnectionOptions\n\n    /**\n     * SQLite underlying library.\n     */\n    sqlite: any\n\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(connection: DataSource) {\n        super(connection)\n\n        this.connection = connection\n        this.options = connection.options as BetterSqlite3ConnectionOptions\n        this.database = this.options.database\n\n        // load sqlite package\n        this.loadDependencies()\n    }\n\n    // -------------------------------------------------------------------------\n    // Public Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Closes connection with database.\n     */\n    async disconnect(): Promise<void> {\n        this.queryRunner = undefined\n        this.databaseConnection.close()\n    }\n\n    /**\n     * Creates a query runner used to execute database queries.\n     */\n    createQueryRunner(mode: ReplicationMode): QueryRunner {\n        if (!this.queryRunner)\n            this.queryRunner = new BetterSqlite3QueryRunner(this)\n\n        return this.queryRunner\n    }\n\n    normalizeType(column: {\n        type?: ColumnType\n        length?: number | string\n        precision?: number | null\n        scale?: number\n    }): string {\n        if ((column.type as any) === Buffer) {\n            return \"blob\"\n        }\n\n        return super.normalizeType(column)\n    }\n\n    async afterConnect(): Promise<void> {\n        return this.attachDatabases()\n    }\n\n    /**\n     * For SQLite, the database may be added in the decorator metadata. It will be a filepath to a database file.\n     */\n    buildTableName(\n        tableName: string,\n        _schema?: string,\n        database?: string,\n    ): string {\n        if (!database) return tableName\n        if (this.getAttachedDatabaseHandleByRelativePath(database))\n            return `${this.getAttachedDatabaseHandleByRelativePath(\n                database,\n            )}.${tableName}`\n\n        if (database === this.options.database) return tableName\n\n        // we use the decorated name as supplied when deriving attach handle (ideally without non-portable absolute path)\n        const identifierHash = filepathToName(database)\n        // decorated name will be assumed relative to main database file when non absolute. Paths supplied as absolute won't be portable\n        const absFilepath = isAbsolute(database)\n            ? database\n            : path.join(this.getMainDatabasePath(), database)\n\n        this.attachedDatabases[database] = {\n            attachFilepathAbsolute: absFilepath,\n            attachFilepathRelative: database,\n            attachHandle: identifierHash,\n        }\n\n        return `${identifierHash}.${tableName}`\n    }\n\n    // -------------------------------------------------------------------------\n    // Protected Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Creates connection with the database.\n     */\n    protected async createDatabaseConnection() {\n        // not to create database directory if is in memory\n        if (this.options.database !== \":memory:\")\n            await this.createDatabaseDirectory(\n                path.dirname(this.options.database),\n            )\n\n        const {\n            database,\n            readonly = false,\n            fileMustExist = false,\n            timeout = 5000,\n            verbose = null,\n            nativeBinding = null,\n            prepareDatabase,\n        } = this.options\n        const databaseConnection = this.sqlite(database, {\n            readonly,\n            fileMustExist,\n            timeout,\n            verbose,\n            nativeBinding,\n        })\n        // in the options, if encryption key for SQLCipher is setted.\n        // Must invoke key pragma before trying to do any other interaction with the database.\n        if (this.options.key) {\n            databaseConnection.exec(\n                `PRAGMA key = ${JSON.stringify(this.options.key)}`,\n            )\n        }\n\n        // function to run before a database is used in typeorm.\n        if (typeof prepareDatabase === \"function\") {\n            prepareDatabase(databaseConnection)\n        }\n\n        // we need to enable foreign keys in sqlite to make sure all foreign key related features\n        // working properly. this also makes onDelete to work with sqlite.\n        databaseConnection.exec(`PRAGMA foreign_keys = ON`)\n\n        // turn on WAL mode to enhance performance\n        if (this.options.enableWAL) {\n            databaseConnection.exec(`PRAGMA journal_mode = WAL`)\n        }\n\n        return databaseConnection\n    }\n\n    /**\n     * If driver dependency is not given explicitly, then try to load it via \"require\".\n     */\n    protected loadDependencies(): void {\n        try {\n            const sqlite =\n                this.options.driver || PlatformTools.load(\"better-sqlite3\")\n            this.sqlite = sqlite\n        } catch (e) {\n            throw new DriverPackageNotInstalledError(\"SQLite\", \"better-sqlite3\")\n        }\n    }\n\n    /**\n     * Auto creates database directory if it does not exist.\n     */\n    protected async createDatabaseDirectory(dbPath: string): Promise<void> {\n        await mkdirp(dbPath)\n    }\n\n    /**\n     * Performs the attaching of the database files. The attachedDatabase should have been populated during calls to #buildTableName\n     * during EntityMetadata production (see EntityMetadata#buildTablePath)\n     *\n     * https://sqlite.org/lang_attach.html\n     */\n    protected async attachDatabases() {\n        // @todo - possibly check number of databases (but unqueriable at runtime sadly) - https://www.sqlite.org/limits.html#max_attached\n        for await (const {\n            attachHandle,\n            attachFilepathAbsolute,\n        } of Object.values(this.attachedDatabases)) {\n            await this.createDatabaseDirectory(\n                path.dirname(attachFilepathAbsolute),\n            )\n            await this.connection.query(\n                `ATTACH \"${attachFilepathAbsolute}\" AS \"${attachHandle}\"`,\n            )\n        }\n    }\n\n    protected getMainDatabasePath(): string {\n        const optionsDb = this.options.database\n        return path.dirname(\n            isAbsolute(optionsDb)\n                ? optionsDb\n                : path.join(this.options.baseDirectory!, optionsDb),\n        )\n    }\n}\n"],"sourceRoot":"../.."}