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

/**
 * GET /api/plugins/financials/reports
 * Get all generated reports for site
 */
router.get('/', async (req, res) => {
  try {
    const { site_id } = req.query;

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

    const reports = await reportRepository.findBySiteId(site_id);

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

/**
 * GET /api/plugins/financials/reports/trial-balance
 * Generate trial balance report
 */
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 reportRepository.generateTrialBalance(site_id, options);

    // Store report in database
    await reportRepository.createReport({
      site_id,
      report_type: 'trial_balance',
      report_name: `Trial Balance - ${options.endDate || 'All Time'}`,
      report_date: options.endDate || new Date().toISOString().split('T')[0],
      parameters: { ...options },
      generated_by: 'system'
    });

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

/**
 * GET /api/plugins/financials/reports/balance-sheet
 * Generate balance sheet
 */
router.get('/balance-sheet', async (req, res) => {
  try {
    const { site_id, end_date } = req.query;

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

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

    const balanceSheet = await reportRepository.generateBalanceSheet(site_id, options);

    // Store report in database
    await reportRepository.createReport({
      site_id,
      report_type: 'balance_sheet',
      report_name: `Balance Sheet - ${options.endDate || 'As of Today'}`,
      report_date: options.endDate || new Date().toISOString().split('T')[0],
      parameters: { ...options },
      generated_by: 'system'
    });

    res.json({
      success: true,
      data: balanceSheet,
      message: 'Balance sheet generated successfully'
    });
  } catch (error) {
    console.error('Failed to generate balance sheet:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to generate balance sheet',
      message: error.message
    });
  }
});

/**
 * GET /api/plugins/financials/reports/income-statement
 * Generate income statement
 */
router.get('/income-statement', 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 incomeStatement = await reportRepository.generateIncomeStatement(site_id, options);

    // Store report in database
    await reportRepository.createReport({
      site_id,
      report_type: 'income_statement',
      report_name: `Income Statement - ${options.startDate} to ${options.endDate}`,
      report_date: options.end_date || new Date().toISOString().split('T')[0],
      parameters: { ...options },
      generated_by: 'system'
    });

    res.json({
      success: true,
      data: incomeStatement,
      message: 'Income statement generated successfully'
    });
  } catch (error) {
    console.error('Failed to generate income statement:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to generate income statement',
      message: error.message
    });
  }
});

module.exports = router;