const reportService = require('../services/report.service');
const { logger } = require('../util/logger');

async function active_users(req, res) {
  const { from_date, to_date } = req.body;
  if (!from_date || !to_date) {
    return res.status(400).json({ error: 'from_date and to_date are required' });
  }
  try {
    const users = await reportService.total_users(from_date, to_date);
    const activeUsers = users.filter(u => u.is_first_login === false);
    const inactiveUsers = users.filter(u => u.is_first_login === true);
    const active_user_list = activeUsers.map(u => ({
      customer_no: u.customer_no,
      user_name: u.preferred_name,
      created_at: u.created_at,
      last_login: u.last_login,
      status: "active"
    }));
    logger.info(`fetch total number of users and active users from date ${from_date} to ${to_date}`);
    res.json({
      total_users: users.length,
      active_users: activeUsers.length,
      inactive_users: inactiveUsers.length,
      active_user_list: active_user_list
    });
  } catch (err) {
    logger.error(err, 'failed to fetch data');
    res.status(500).json({ error: 'something went wrong' });
  }
}

async function inactive_users(req, res) {
  const { from_date, to_date } = req.body;
  if (!from_date || !to_date) {
    return res.status(400).json({ error: 'from_date and to_date are required' });
  }
  try {
    const users = await reportService.total_users(from_date, to_date);
    const activeUsers = users.filter(u => u.is_first_login === false);
    const inactiveUsers = users.filter(u => u.is_first_login === true);
    const inactive_user_list = inactiveUsers.map(u => ({
      customer_no: u.customer_no,
      user_name: u.preferred_name,
      created_at: u.created_at,
      last_login: u.last_login,
      status: "in-active"
    }));
    logger.info(`fetch total number of users and inactive users from date ${from_date} to ${to_date}`);
    res.json({
      total_users: users.length,
      active_users: activeUsers.length,
      inactive_users: inactiveUsers.length,
      inactive_user_list: inactive_user_list
    });
  } catch (err) {
    logger.error(err, 'failed to fetch data');
    res.status(500).json({ error: 'something went wrong' });
  }
}

async function getTransactions(req, res) {
  const {
    trx_type,
    from_date,
    to_date,
    client,
    amount_min,
    amount_max,
    customer_no
  } = req.body;

  if (!trx_type || !from_date || !to_date) {
    return res.status(400).json({ error: 'trx_type, from_date and to_date are required' });
  }

  try {
    const filters = {
      trx_type,
      from_date,
      to_date,
      client,
      amount_min,
      amount_max,
      customer_no
    };

    const transactions = await reportService.getTransactions(filters);
    const transactions_list = transactions.map(u => ({

      customer_no: u.customer_no,
      from_account: u.from_account,
      to_account: u.to_account,
      ifsc_code: u.ifsc_code,
      amount: u.amount,
      created_at: u.created_at,
      trx_type: u.trx_type,
      status: u.status,
    }));

    res.json({ count: transactions.length, transactions_list });

  } catch (err) {
    logger.error(err, 'failed to fetch transactions');
    res.status(500).json({ error: 'something went wrong' });
  }
}

async function getFailedTransactions(req, res) {
  const {
    from_date,
    to_date,
    customer_no
  } = req.body;

  if (!from_date || !to_date) {
    return res.status(400).json({ error: 'from_date and to_date are required' });
  }

  try {
    const filters = {
      from_date,
      to_date,
      customer_no
    };

    const transactions = await reportService.getFailedTransactions(filters);
    const transactions_list = transactions.map(u => ({

      customer_no: u.customer_no,
      from_account: u.from_account,
      to_account: u.to_account,
      ifsc_code: u.ifsc_code,
      amount: u.amount,
      created_at: u.created_at,
      trx_type: u.trx_type,
      status: u.status,
    }));

    res.json({ count: transactions.length, transactions_list });

  } catch (err) {
    logger.error(err, 'failed to fetch transactions');
    res.status(500).json({ error: 'something went wrong' });
  }
}

async function getDetailsOfNotLoginWithinDuration(req, res) {
  const {
    duration
  } = req.body;

  if (!duration) {
    return res.status(400).json({ error: 'Duration are required' });
  }

  try {
    const users = await reportService.getNotLogin(duration);
    const user_list = users.map(u => ({

      customer_no: u.customer_no,
      user_name: u.preferred_name,
      last_login: u.last_login,
      created_at: u.created_at,
      locked: u.locked,
      status: u.status,
    }));

    res.json({ count: users.length, user_list });

  } catch (err) {
    logger.error(err, 'failed to fetch not logged in user details');
    res.status(500).json({ error: 'something went wrong' });
  }
}

module.exports = { active_users, inactive_users, getTransactions, getFailedTransactions, getDetailsOfNotLoginWithinDuration };