/**
 * Direct PostgreSQL escape hatch for setting up states the public API doesn't
 * expose — e.g. forcing a user into the locked-PIN state to assert the 429
 * recovery path, or expiring sessions for chaos tests.
 *
 * Most tests should NOT use this: prefer `ApiClient` so the tests exercise
 * the same code paths real users do. Reach for direct SQL only when the API
 * can't get you where you need to go.
 */
import { Client } from 'pg';

const CONN = {
  host: process.env.E2E_DB_HOST ?? 'localhost',
  port: Number(process.env.E2E_DB_PORT ?? '55432'),
  user: process.env.E2E_DB_USER ?? 'eventsnap_test',
  password: process.env.E2E_DB_PASSWORD ?? 'eventsnap_test',
  database: process.env.E2E_DB_NAME ?? 'eventsnap_test',
};

async function withClient<T>(fn: (c: Client) => Promise<T>): Promise<T> {
  const client = new Client(CONN);
  await client.connect();
  try {
    return await fn(client);
  } finally {
    await client.end();
  }
}

export const db = {
  async lockUserPin(userId: string, minutesFromNow = 15) {
    await withClient((c) =>
      c.query(
        `UPDATE "user" SET pin_locked_until = NOW() + ($2 || ' minutes')::interval, failed_pin_attempts = 3 WHERE id = $1`,
        [userId, String(minutesFromNow)]
      )
    );
  },

  async expireSession(userId: string) {
    await withClient((c) =>
      c.query(`UPDATE session SET expires_at = NOW() - interval '1 hour' WHERE user_id = $1`, [userId])
    );
  },

  async setUploadCompressionStatus(uploadId: string, status: 'pending' | 'processing' | 'done' | 'failed') {
    await withClient((c) =>
      c.query(`UPDATE upload SET compression_status = $2 WHERE id = $1`, [uploadId, status])
    );
  },

  async countUploadsForUser(userId: string): Promise<number> {
    return withClient(async (c) => {
      const r = await c.query<{ count: string }>(
        `SELECT COUNT(*)::text AS count FROM upload WHERE user_id = $1 AND deleted_at IS NULL`,
        [userId]
      );
      return Number(r.rows[0].count);
    });
  },

  async setExportReleased(slug: string, released: boolean) {
    await withClient((c) =>
      c.query(`UPDATE event SET export_released_at = $2 WHERE slug = $1`, [
        slug,
        released ? new Date() : null,
      ])
    );
  },

  /** Insert a pre-baked export job row to skip the (slow) real compression path. */
  async fakeExportJob(eventSlug: string, type: 'zip' | 'html', status: 'pending' | 'running' | 'done') {
    await withClient(async (c) => {
      const ev = await c.query<{ id: string }>(`SELECT id FROM event WHERE slug = $1`, [eventSlug]);
      if (ev.rows.length === 0) throw new Error(`No event with slug ${eventSlug}`);
      await c.query(
        `INSERT INTO export_job (event_id, type, status, progress_pct, completed_at)
         VALUES ($1, $2::export_type, $3::export_status, $4, $5)
         ON CONFLICT (event_id, type) DO UPDATE SET status = EXCLUDED.status, progress_pct = EXCLUDED.progress_pct`,
        [ev.rows[0].id, type, status, status === 'done' ? 100 : 0, status === 'done' ? new Date() : null]
      );
    });
  },
};