//Instalación normal mediante NPM
const { google } = require('googleapis');
const googleAuth = require('google-auth-library');
const fs = require('fs');
require('../config/config');

drive = google.drive('v3');
credenciales = JSON.parse(fs.readFileSync('./cred.json', 'utf8'));
//Crear objeto de autorización JWT

jwtClient = new google.auth.JWT(
  credenciales.client_email,
  null,
  credenciales.private_key,
  ['https://www.googleapis.com/auth/drive']
);

const list = (pageToken) => {
  return new Promise((resolve, reject) => {
    jwtClient.authorize((err, tokens) => {
      if (err) reject('Error de autorización: ' + err);
      drive.files.list(
        {
          auth: jwtClient,
          corpora: 'user',
          supportsTeamDrives: true,
          includeTeamDriveItems: true,
          spaces: 'drive',
          pageSize: 100,
          pageToken,
          fields: '*',
          orderBy: 'name',
        },
        (err, resp) => {
          if (err) reject('Ha habido un error en la petición: ' + err);
          resolve(resp.data);
        }
      );
    });
  });
};

// Buscar carpeta
const buscarCarpeta = async (name) => {
  const data = [];
  let pageToken = '';

  do {
    let response = await list(pageToken);
    let files = response.files;

    for (let i = 0; i < files.length; i++)
      if (
        files[i].name === name //&&
        // files[i].mimeType === 'application/vnd.google-apps.folder'
      )
        data.push(files[i]);
    if (response.nextPageToken) pageToken = response.nextPageToken;
    else pageToken = '';
  } while (pageToken);
  return data;
};

const archivosCarpeta = async (id) => {
  let pageToken = '';
  const data = [];

  do {
    let response = await list(pageToken);
    let files = response.files;

    for (let i = 0; i < files.length; i++)
      if (files[i].parents[0] === id) data.push(files[i]);
    if (response.nextPageToken) pageToken = response.nextPageToken;
    else pageToken = '';
  } while (pageToken);
  return data;
};

// Borrar archivo
const deleteFile = (fileId) => {
  return new Promise((resolve, reject) => {
    jwtClient.authorize(async (err, tokens) => {
      if (err) reject(err);

      drive.files.delete(
        {
          fileId,
          auth: jwtClient,
        },
        (err, resp) => {
          if (err) reject(err);
          resolve(resp);
        }
      );
    });
  });
};

// CREAR CARPETA
const mkDir = (name) => {
  return new Promise((resolve, reject) => {
    jwtClient.authorize((err, tokens) => {
      if (err) reject('Error de autorización: ' + err);

      let requestBody = {
        name,
        mimeType: 'application/vnd.google-apps.folder',
        parents: [process.env.CARPETA],
      };
      drive.files.create(
        {
          fields: 'id',
          auth: jwtClient,
          requestBody,
        },
        (err, res) => {
          if (err) reject(err);
          resolve(res.data.id);
        }
      );
    });
  });
};

// CREAR ARCHIVO
const uploadFile = (path, name, mimeType, parent) => {
  return new Promise((resolve, reject) => {
    jwtClient.authorize(function (err, tokens) {
      if (err) reject('Error de autorización: ' + err);

      let requestBody = {
        name,
        parents: [parent],
      };
      let media = {
        mimeType: mimeType,
        body: fs.createReadStream(`${path}`),
      };

      drive.files.create(
        {
          media: media,
          fields: 'id',
          requestBody,
          auth: jwtClient,
        },
        (err, file) => {
          if (err) reject(err);
          fs.unlinkSync(path);
          resolve(file.data.id);
        }
      );
    });
  });
};

//deleteFile("");
//mkDir("316313528");
//uploadFile("arturo.jpg","image/jpeg","1DswUbL4uWE2RlB01XHLAIlPwh_0AXBHw");
//list()

const folder = (numeroCuenta) => {
  return list()
    .then((res) => {
      for (let i = 0; i < res.length; i++) {
        if (
          res[i].mimeType === 'application/vnd.google-apps.folder' &&
          res[i].name === numeroCuenta
        )
          return res[i].id;
      }
      return mkDir(numeroCuenta);
    })
    .then((res) => {
      return res;
    });
};

const borrarTodo = () => {
  return list().then(async (res) => {
    console.log(res);
    // for (let i = 0; i < res.length; i++)
    //   if (res[i].name !== 'Babyhelon') await deleteFile(res[i].id);
  });
};

// borrarTodo();

module.exports = {
  folder,
  uploadFile,
  buscarCarpeta,
  archivosCarpeta,
};