@magic-mustard/sqlsync/dist/migrations/migration.processor.js

SQLSync simplifies database schema evolution by allowing a declarative approach to table management

"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.MigrationProcessor = void 0;
const lodash_1 = require("lodash");
const path = __importStar(require("path"));
const namespace_1 = require("./namespace");
const logger_1 = require("../utils/logger");
class MigrationProcessor extends namespace_1.Migration.AbstractProcessor {
    constructor(fileIO, configRoot, newMigrationName) {
        // Generate timestamp in YYYYMMDDHHMMSS format
        const now = new Date();
        const pad = (n) => n.toString().padStart(2, '0');
        const timestamp = `${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}`;
        const migrationFilename = `${timestamp}_${newMigrationName}.sql`;
        super(fileIO, configRoot, migrationFilename);
        this.migrationTokens = [];
    }
    append(token) {
        return __awaiter(this, void 0, void 0, function* () {
            this.migrationTokens.push(token);
        });
    }
    /**
     * Returns the latest migration filename formatted with timestamp and user-provided name.
     */
    getLatestMigrationName() {
        return this.latestMigrationFileName;
    }
    /**
     * Runs the migration process: creates migration file and writes all statements.
     * @returns The filename of the created migration file
     */
    run() {
        return __awaiter(this, void 0, void 0, function* () {
            if ((0, lodash_1.isEmpty)(this.migrationTokens)) {
                logger_1.logger.warn('No differences detected. No migration generated.');
                return '';
            }
            const migrationDir = path.join(this.configRoot, 'migrations');
            const migrationPath = path.join(migrationDir, this.latestMigrationFileName);
            if (yield this.fileIO.exists(migrationPath)) {
                throw new Error(`Migration file already exists: ${migrationPath}`);
            }
            // Build file content with tab indentation
            const fileContent = this.migrationTokens.map(token => `-- sqlsync: startStatement | file path: ${token.filePath} | checksum: ${token.checksum}\n`
                + `${token.token}\n`
                + `-- sqlsync: endStatement | file path: ${token.filePath}\n`).join('\n');
            try {
                yield this.fileIO.writeFile(migrationPath, fileContent.replace(/^/gm, '\t'));
            }
            catch (err) {
                throw new Error(`Failed to write migration file: ${err}`);
            }
            return this.latestMigrationFileName;
        });
    }
    /**
     * Removes the migration file from disk, if it exists.
     * @param filename - The migration file to remove (relative to migrations/)
     */
    removeFile(filename) {
        return __awaiter(this, void 0, void 0, function* () {
            const migrationPath = path.join(this.configRoot, 'migrations', filename);
            if (yield this.fileIO.exists(migrationPath)) {
                if (this.fileIO.unlink) {
                    yield this.fileIO.unlink(migrationPath);
                }
            }
        });
    }
}
exports.MigrationProcessor = MigrationProcessor;