const express = require('express');
const router = express.Router();
const { generalLedgerRepository } = require('../repositories');

/**
 * GET /api/plugins/financials/ledger/general
 * Get general ledger for all accounts with balances
 * Query params: site_id (required), start_date, end_date
 */
router.get('/general', async (req, res) => {
  try {
    const { site_id, start_date, end_date } = req.query;

    if (!site_id) {
      return res.status(400).json({
        success: false,
        error: 'Missing required parameter: site_id'
      });
    }

    const options = {};
    if (start_date) options.startDate = start_date;
    if (end_date) options.endDate = end_date;

    const generalLedger = await generalLedgerRepository.getGeneralLedger(site_id, options);

    res.json({
      success: true,
      data: generalLedger,
      message: 'General ledger retrieved successfully'
    });
  } catch (error) {
    console.error('Failed to get general ledger:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to retrieve general ledger',
      message: error.message
    });
  }
});

/**
 * GET /api/plugins/financials/ledger/account/:accountId
 * Get ledger entries for a specific account with running balance
 * Query params: site_id (required), start_date, end_date
 */
router.get('/account/:accountId', async (req, res) => {
  try {
    const { accountId } = req.params;
    const { site_id, start_date, end_date } = req.query;

    if (!site_id) {
      return res.status(400).json({
        success: false,
        error: 'Missing required parameter: site_id'
      });
    }

    const options = {};
    if (start_date) options.startDate = start_date;
    if (end_date) options.endDate = end_date;

    const ledgerEntries = await generalLedgerRepository.getAccountLedger(accountId, site_id, options);

    res.json({
      success: true,
      data: ledgerEntries,
      message: 'Account ledger retrieved successfully'
    });
  } catch (error) {
    console.error('Failed to get account ledger:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to retrieve account ledger',
      message: error.message
    });
  }
});

/**
 * GET /api/plugins/financials/ledger/account/:accountId/balance
 * Get account balance summary
 * Query params: site_id (required), start_date, end_date
 */
router.get('/account/:accountId/balance', async (req, res) => {
  try {
    const { accountId } = req.params;
    const { site_id, start_date, end_date } = req.query;

    if (!site_id) {
      return res.status(400).json({
        success: false,
        error: 'Missing required parameter: site_id'
      });
    }

    const options = {};
    if (start_date) options.startDate = start_date;
    if (end_date) options.endDate = end_date;

    const balance = await generalLedgerRepository.getAccountBalance(accountId, site_id, options);

    res.json({
      success: true,
      data: balance,
      message: 'Account balance retrieved successfully'
    });
  } catch (error) {
    console.error('Failed to get account balance:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to retrieve account balance',
      message: error.message
    });
  }
});

/**
 * GET /api/plugins/financials/ledger/trial-balance
 * Get trial balance report
 * Query params: site_id (required), start_date, end_date
 */
router.get('/trial-balance', async (req, res) => {
  try {
    const { site_id, start_date, end_date } = req.query;

    if (!site_id) {
      return res.status(400).json({
        success: false,
        error: 'Missing required parameter: site_id'
      });
    }

    const options = {};
    if (start_date) options.startDate = start_date;
    if (end_date) options.endDate = end_date;

    const trialBalance = await generalLedgerRepository.getTrialBalance(site_id, options);

    res.json({
      success: true,
      data: trialBalance,
      message: 'Trial balance retrieved successfully'
    });
  } catch (error) {
    console.error('Failed to get trial balance:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to retrieve trial balance',
      message: error.message
    });
  }
});

module.exports = router;