Add kysely migrations

src/db.ts

@@ -1,4 +1,7 @@
-import { DenoSqliteDialect, Kysely, Sqlite } from '@/deps.ts';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+
+import { DenoSqliteDialect, FileMigrationProvider, Kysely, Migrator, Sqlite } from '@/deps.ts';
 
 interface Tables {
   events: EventRow;
@@ -30,49 +33,22 @@ interface UserRow {
   inserted_at: Date;
 }
 
-const sqlite = new Sqlite('data/db.sqlite3');
-
-// TODO: move this into a proper migration
-sqlite.execute(`
-  CREATE TABLE IF NOT EXISTS events (
-    id TEXT PRIMARY KEY,
-    kind INTEGER NOT NULL,
-    pubkey TEXT NOT NULL,
-    content TEXT NOT NULL,
-    created_at INTEGER NOT NULL,
-    tags TEXT NOT NULL,
-    sig TEXT NOT NULL
-  );
-
-  CREATE INDEX IF NOT EXISTS idx_events_kind ON events(kind);
-  CREATE INDEX IF NOT EXISTS idx_events_pubkey ON events(pubkey);
-
-  CREATE TABLE IF NOT EXISTS tags (
-    tag TEXT NOT NULL,
-    value_1 TEXT,
-    value_2 TEXT,
-    value_3 TEXT,
-    event_id TEXT NOT NULL,
-    FOREIGN KEY(event_id) REFERENCES events(id) ON DELETE CASCADE
-  );
-
-  CREATE INDEX IF NOT EXISTS idx_tags_tag ON tags(tag);
-  CREATE INDEX IF NOT EXISTS idx_tags_value_1 ON tags(value_1);
-  CREATE INDEX IF NOT EXISTS idx_tags_event_id ON tags(event_id);
-
-  CREATE TABLE IF NOT EXISTS users (
-    pubkey TEXT PRIMARY KEY,
-    username TEXT NOT NULL,
-    inserted_at DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL
-  );
-
-  CREATE UNIQUE INDEX IF NOT EXISTS idx_users_username ON users(username);
-`);
-
 const db = new Kysely<Tables>({
   dialect: new DenoSqliteDialect({
-    database: sqlite,
+    database: new Sqlite('data/db.sqlite3'),
   }),
 });
 
+const migrator = new Migrator({
+  db,
+  provider: new FileMigrationProvider({
+    fs,
+    path,
+    migrationFolder: new URL(import.meta.resolve('./db/migrations')).pathname,
+  }),
+});
+
+console.log('Running migrations...');
+await migrator.migrateToLatest();
+
 export { db, type EventRow, type TagRow, type UserRow };

src/db/events.ts

@@ -26,9 +26,11 @@ function insertEvent(event: SignedEvent): Promise<void> {
       return results;
     }, []);
 
-    await trx.insertInto('tags')
-      .values(tags)
-      .execute();
+    await Promise.all(tags.map((tag) => {
+      return trx.insertInto('tags')
+        .values(tag)
+        .execute();
+    }));
   });
 }
 

src/db/migrations/000_create_events.ts

@@ -0,0 +1,66 @@
+import { Kysely, sql } from '@/deps.ts';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .createTable('events')
+    .addColumn('id', 'text', (col) => col.primaryKey())
+    .addColumn('kind', 'integer', (col) => col.notNull())
+    .addColumn('pubkey', 'text', (col) => col.notNull())
+    .addColumn('content', 'text', (col) => col.notNull())
+    .addColumn('created_at', 'integer', (col) => col.notNull())
+    .addColumn('tags', 'text', (col) => col.notNull())
+    .addColumn('sig', 'text', (col) => col.notNull())
+    .execute();
+
+  await db.schema
+    .createTable('tags')
+    .addColumn('tag', 'text', (col) => col.notNull())
+    .addColumn('value_1', 'text')
+    .addColumn('value_2', 'text')
+    .addColumn('value_3', 'text')
+    .addColumn('event_id', 'text', (col) => col.notNull().references('events.id'))
+    .execute();
+
+  await db.schema
+    .createTable('users')
+    .addColumn('pubkey', 'text', (col) => col.primaryKey())
+    .addColumn('username', 'text', (col) => col.notNull().unique())
+    .addColumn('inserted_at', 'datetime', (col) => col.notNull().defaultTo(sql`CURRENT_TIMESTAMP`))
+    .execute();
+
+  await db.schema
+    .createIndex('idx_events_kind')
+    .on('events')
+    .column('kind')
+    .execute();
+
+  await db.schema
+    .createIndex('idx_events_pubkey')
+    .on('events')
+    .column('pubkey')
+    .execute();
+
+  await db.schema
+    .createIndex('idx_tags_tag')
+    .on('tags')
+    .column('tag')
+    .execute();
+
+  await db.schema
+    .createIndex('idx_tags_value_1')
+    .on('tags')
+    .column('value_1')
+    .execute();
+
+  await db.schema
+    .createIndex('idx_tags_event_id')
+    .on('tags')
+    .column('event_id')
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema.dropTable('events').execute();
+  await db.schema.dropTable('tags').execute();
+  await db.schema.dropTable('users').execute();
+}

src/deps.ts

@@ -50,5 +50,12 @@ export * as secp from 'npm:@noble/secp256k1@^2.0.0';
 export { LRUCache } from 'npm:lru-cache@^10.0.0';
 export { DB as Sqlite } from 'https://deno.land/x/sqlite@v3.7.3/mod.ts';
 export * as dotenv from 'https://deno.land/std@0.197.0/dotenv/mod.ts';
-export { type Insertable, Kysely, type NullableInsertKeys } from 'npm:kysely@^0.25.0';
+export {
+  FileMigrationProvider,
+  type Insertable,
+  Kysely,
+  Migrator,
+  type NullableInsertKeys,
+  sql,
+} from 'npm:kysely@^0.25.0';
 export { DenoSqliteDialect } from 'https://gitlab.com/soapbox-pub/kysely-deno-sqlite/-/raw/76748303a45fac64a889cd2b9265c6c9b8ef2e8b/mod.ts';