import { login } from './auth.js'
import { convertToAmsterdamTime } from "./utils.js";

export const getShifts = async (req, res) => {
  const apiKey = req.body.apiKey;
  // const apiProdUrl = 'https://api.fleks.works/v1/shifts/?limit=100000&page=1&isArchived=false&is_approved=false&is_exported=false&is_invoiced=false&is_paid_out=true&noShiftComments=true';
  const apiProdUrl = 'https://api.fleks.works/v1/shifts/?limit=100000&page=1&isArchived=false&is_approved=false&noShiftComments=true';

  try {
    const response = await fetch(apiProdUrl, {
      headers: {
        'x-api-key': apiKey
      }
    });

    const data = await response.json();

    const shifts = data.results.map(shift => {
      const startDate = new Date(shift.start_date);
      const endDate = new Date(shift.end_date);
      const startAmsterdamTime = convertToAmsterdamTime(startDate);
      const endAmsterdamTime = convertToAmsterdamTime(endDate);

      return {
        ...shift,
        start_time: startAmsterdamTime,
        end_time: endAmsterdamTime
      };
    });

    res.json({ ...data, results: shifts });
  } catch (error) {
    console.log(error)
    res.status(500).json({ error: 'Error fetching data' });
  }
}

export const updateShifts = async (req, res) => {
  const { config, shifts } = req.body; // Expected type = { config , shifts }

  if (!Array.isArray(shifts)) {
    console.error('Request body should be an array of updates');
    return res.status(400).json({ error: 'Request body should be an array of updates' });
  }

  const results = {
    success: [],
    failed: []
  };

  const getToken = async () => {
    return await login(config?.userName, config?.passWord);
  }

  let token = await getToken();

  if (!token) {
    const error = `token not obtained`;
    console.log(error);
    return res.status(403).send({ error });
  }

  const updateShift = async (update) => {
    const { uuid, break_hours } = update;
    const apiProdUrl = `https://backend.fleks.works/api/jobs/workflow-fields/${uuid}/`;

    try {
      const response = await fetch(apiProdUrl, {
        method: 'PUT',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `JWT ${token}`
        },
        body: JSON.stringify({ break_hours })
      });

      const data = await response.json();

      if (response.ok) {
        console.log(`Successfully updated break hours for UUID: ${uuid}`);
        results.success.push({ uuid, message: data.message });
      } else {
        if (response.status === 401 || response.status === 403) {
          console.log(`Token invalid. Reattempting login for UUID: ${uuid}`);
          token = await getToken();
          if (token) {
            return updateShift(update);
          } else {
            console.error(`Failed to update break hours for UUID: ${uuid}`, data);
            results.failed.push({ uuid, error: 'Failed to reauthenticate and obtain new token' });
          }
        } else {
          console.error(`Failed to update break hours for UUID: ${uuid}`, data);
          results.failed.push({ uuid, error: data.message || data });
        }
      }
    } catch (error) {
      console.error(`Error updating break hours for UUID: ${uuid}`, error);
      results.failed.push({ uuid, error: error.message });
    }
  }

  for (const update of shifts) {
    await updateShift(update);
  }

  console.log(`Finished processing updates. Success: ${results.success.length}, Failed: ${results.failed.length}`);

  res.json(results);
}