chore: rework pg migration creation

packages/db-postgres/src/migrate.ts

@@ -0,0 +1,57 @@
+/* eslint-disable no-restricted-syntax, no-await-in-loop */
+import type { DatabaseAdapter } from 'payload/database'
+import type { PayloadRequest } from 'payload/types'
+
+import { generateDrizzleJson } from 'drizzle-kit/utils'
+import { readMigrationFiles } from 'payload/database'
+
+import type { PostgresAdapter } from './types'
+
+export async function migrate(this: PostgresAdapter): Promise<void> {
+  const { payload } = this
+  const migrationFiles = await readMigrationFiles({ payload })
+  const migrationQuery = await payload.find({
+    collection: 'payload-migrations',
+    limit: 0,
+    sort: '-name',
+  })
+
+  const latestBatch = Number(migrationQuery.docs[0]?.batch ?? 0)
+
+  const newBatch = latestBatch + 1
+
+  // Execute 'up' function for each migration sequentially
+  for (const migration of migrationFiles) {
+    const existingMigration = migrationQuery.docs.find(
+      (existing) => existing.name === migration.name,
+    )
+
+    // Run migration if not found in database
+    if (existingMigration) {
+      continue // eslint-disable-line no-continue
+    }
+
+    const start = Date.now()
+
+    payload.logger.info({ msg: `Migrating: ${migration.name}` })
+
+    const pgAdapter = payload.db as PostgresAdapter // TODO: Fix this typing
+    const drizzleJSON = generateDrizzleJson(pgAdapter.schema)
+
+    try {
+      await migration.up({ payload })
+      payload.logger.info({ msg: `Migrated:  ${migration.name} (${Date.now() - start}ms)` })
+      await payload.create({
+        collection: 'payload-migrations',
+        data: {
+          name: migration.name,
+          batch: newBatch,
+          schema: drizzleJSON,
+        },
+      })
+    } catch (err: unknown) {
+      payload.logger.error({ err, msg: `Error running migration ${migration.name}` })
+      throw err
+    }
+  }
+}