const Pool = require('../../models/Pool');

class PoolRepository {
  constructor(uow) {
    this.uow = uow;
  }

  async create({ pool_name, description = null, price = 0.00, pool_type = 'other', is_active = true, created_by = null }) {
    const conn = this.uow.connection;
    const [res] = await conn.execute(
      `INSERT INTO pools (pool_name, description, price, pool_type, is_active, created_by)
       VALUES (?, ?, ?, ?, ?, ?)`,
      [pool_name, description, price, pool_type, is_active, created_by]
    );
    return new Pool({ id: res.insertId, pool_name, description, price, pool_type, is_active, created_by });
  }

  async findAll() {
    const conn = this.uow.connection; // switched to connection
    try {
      console.debug('[PoolRepository.findAll] querying pools');
      const [rows] = await conn.execute(
        `SELECT id, pool_name, description, price, pool_type, is_active, created_by, updated_by, created_at, updated_at
         FROM pools
         ORDER BY created_at DESC`
      );
      console.debug('[PoolRepository.findAll] rows fetched', { count: rows.length });
      return rows.map(r => new Pool(r));
    } catch (err) {
      console.error('[PoolRepository.findAll] query failed', err);
      // Surface a consistent error up the stack
      const e = new Error('Failed to fetch pools');
      e.status = 500;
      e.cause = err;
      throw e;
    }
  }

  // Update is_active flag (replaces old state transitions)
  async updateActive(id, is_active, updated_by = null) {
    const conn = this.uow.connection;
    const [rows] = await conn.execute(`SELECT id FROM pools WHERE id = ?`, [id]);
    if (!rows || rows.length === 0) {
      const err = new Error('Pool not found');
      err.status = 404;
      throw err;
    }
    await conn.execute(
      `UPDATE pools SET is_active = ?, updated_by = ?, updated_at = NOW() WHERE id = ?`,
      [is_active, updated_by, id]
    );
    const [updated] = await conn.execute(
      `SELECT id, pool_name, description, price, pool_type, is_active, created_by, updated_by, created_at, updated_at FROM pools WHERE id = ?`,
      [id]
    );
    return new Pool(updated[0]);
  }
}

module.exports = PoolRepository;