// type GenerateMigration = (before: DrizzleSnapshotJSON, after: DrizzleSnapshotJSON) => string[]

// type GenerateDrizzleJSON = (schema: DrizzleSchemaExports) => DrizzleSnapshotJSON

// type PushDiff = (schema: DrizzleSchemaExports) => Promise<{ warnings: string[], apply: () => Promise<void> }>


// drizzle-kit@utils

import { generateDrizzleJson, generateMigration, pushSchema } from 'drizzle-kit/utils';
import { drizzle } from 'drizzle-orm/node-postgres';
import { Pool } from 'pg';

async function generateUsage() {
  const schema = await import('./data/users');
  const schemaAfter = await import('./data/users-after');

  const drizzleJsonBefore = generateDrizzleJson(schema);
  const drizzleJsonAfter = generateDrizzleJson(schemaAfter);

  const sqlStatements = await generateMigration(drizzleJsonBefore, drizzleJsonAfter);

  console.log(sqlStatements);
}

async function pushUsage() {
  const schemaAfter = await import('./data/users-after');

  const db = drizzle(
    new Pool({ connectionString: '' }),
  );

  const response = await pushSchema(schemaAfter, db);

  console.log('\n');
  console.log('hasDataLoss: ', response.hasDataLoss);
  console.log('warnings: ', response.warnings);
  console.log('statements: ', response.statementsToExecute);

  await response.apply();

  process.exit(0);
}