91 lines
2.3 KiB
TypeScript
91 lines
2.3 KiB
TypeScript
import 'std/dotenv/load.ts';
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import Database, { sql } from '/lib/interfaces/database.ts';
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const migrationsDirectoryPath = `${Deno.cwd()}/db-migrations`;
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const migrationsDirectory = Deno.readDir(migrationsDirectoryPath);
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const db = new Database();
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interface Migration {
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id: string;
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name: string;
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executed_at: Date;
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}
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async function getExecutedMigrations() {
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const executedMigrations = new Set(
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Array.from(
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(await db.query<Migration>(sql`SELECT * FROM "bewcloud_migrations" ORDER BY "name" ASC`)).map((migration) =>
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migration.name
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),
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),
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);
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return executedMigrations;
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}
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async function getMissingMigrations() {
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const existingMigrations: Set<string> = new Set();
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for await (const migrationFile of migrationsDirectory) {
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// Skip non-files
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if (!migrationFile.isFile) {
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continue;
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}
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// Skip files not in the "001-blah.pgsql" format
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if (!migrationFile.name.match(/^\d+-.*(\.pgsql)$/)) {
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continue;
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}
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existingMigrations.add(migrationFile.name);
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}
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// Add everything to run, by default
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const migrationsToExecute = new Set([...existingMigrations]);
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try {
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const executedMigrations = await getExecutedMigrations();
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// Remove any existing migrations that were executed, from the list of migrations to execute
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for (const executedMigration of executedMigrations) {
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migrationsToExecute.delete(executedMigration);
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}
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} catch (_error) {
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// The table likely doesn't exist, so run everything.
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}
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return migrationsToExecute;
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}
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async function runMigrations(missingMigrations: Set<string>) {
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for (const missingMigration of missingMigrations) {
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console.log(`Running "${missingMigration}"...`);
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try {
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const migrationSql = await Deno.readTextFile(`${migrationsDirectoryPath}/${missingMigration}`);
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await db.query(migrationSql);
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await db.query(sql`INSERT INTO "public"."bewcloud_migrations" ("name", "executed_at") VALUES ($1, NOW())`, [
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missingMigration,
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]);
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console.log('Success!');
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} catch (error) {
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console.log('Failed!');
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console.error(error);
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}
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}
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}
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const missingMigrations = await getMissingMigrations();
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await runMigrations(missingMigrations);
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if (missingMigrations.size === 0) {
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console.log('No migrations to run!');
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}
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