module.exports = function (app) {
  var Response = require('../lib/httpResponse.js');
  var User = require('mongoose').model('User');
  var acl = require('../lib/auth').acl;
  var jwtRefreshSecret = require('../lib/auth').jwtRefreshSecret;
  var jwt = require('jsonwebtoken');
  var _ = require('lodash');
  var passwordpolicy = require('../lib/passwordpolicy');

  // Check token validity
  app.get(
    '/api/users/checktoken',
    acl.hasPermission('validtoken'),
    function (req, res) {
      Response.Ok(res, req.cookies['token']);
    },
  );

  // Refresh token
  app.get('/api/users/refreshtoken', function (req, res) {
    var userAgent = req.headers['user-agent'];
    var token = req.cookies['refreshToken'];

    User.updateRefreshToken(token, userAgent)
      .then(msg => {
        res.cookie('token', `JWT ${msg.token}`, {
          secure: true,
          httpOnly: true,
        });
        res.cookie('refreshToken', msg.refreshToken, {
          secure: true,
          httpOnly: true,
          path: '/api/users/refreshtoken',
        });
        Response.Ok(res, msg);
      })
      .catch(err => {
        if (err.fn === 'Unauthorized') {
          res.clearCookie('token');
          res.clearCookie('refreshToken');
        }
        Response.Internal(res, err);
      });
  });

  // Remove token cookie
  app.delete('/api/users/refreshtoken', function (req, res) {
    var token = req.cookies['refreshToken'];
    try {
      var decoded = jwt.verify(token, jwtRefreshSecret);
    } catch (err) {
      res.clearCookie('token');
      res.clearCookie('refreshToken');
      if (err.name === 'TokenExpiredError')
        Response.Unauthorized(res, 'Expired refreshToken');
      else Response.Unauthorized(res, 'Invalid refreshToken');
      return;
    }
    User.removeSession(decoded.userId, decoded.sessionId)
      .then(msg => {
        res.clearCookie('token');
        res.clearCookie('refreshToken');
        Response.Ok(res, msg);
      })
      .catch(err => Response.Internal(res, err));
  });

  // Authenticate user -> return JWT token
  app.post('/api/users/token', function (req, res) {
    if (!req.body.password || !req.body.username) {
      Response.BadParameters(res, 'Required parameters: username, password');
      return;
    }

    // Validate types
    if (
      typeof req.body.password !== 'string' ||
      typeof req.body.username !== 'string' ||
      (req.body.totpToken && typeof req.body.totpToken !== 'string')
    ) {
      Response.BadParameters(res, 'Parameters must be of type String');
      return;
    }

    var user = new User();
    //Required params
    user.username = req.body.username;
    user.password = req.body.password;

    //Optional params
    if (req.body.totpToken) user.totpToken = req.body.totpToken;

    user
      .getToken(req.headers['user-agent'])
      .then(msg => {
        res.cookie('token', `JWT ${msg.token}`, {
          secure: true,
          httpOnly: true,
          sameSite: 'None',
        });
        res.cookie('refreshToken', msg.refreshToken, {
          secure: true,
          httpOnly: true,
          path: '/api/users/refreshtoken',
          sameSite: 'None',
        });
        Response.Ok(res, msg);
      })
      .catch(err => Response.Internal(res, err));
  });

  // Check if there are any existing users for creating first user
  app.get('/api/users/init', function (req, res) {
    User.getAll()
      .then(msg => Response.Ok(res, msg.length === 0))
      .catch(err => Response.Internal(res, err));
  });

  // Get all users
  app.get('/api/users', acl.hasPermission('users:read'), function (req, res) {
    User.getAll()
      .then(msg => Response.Ok(res, msg))
      .catch(err => Response.Internal(res, err));
  });

  // Get all reviewers
  app.get(
    '/api/users/reviewers',
    acl.hasPermission('users:read'),
    function (req, res) {
      User.getAll()
        .then(users => {
          var reviewers = [];
          users.forEach(user => {
            if (
              acl.isAllowed(user.role, 'audits:review') ||
              acl.isAllowed(user.role, 'audits:review-all')
            ) {
              reviewers.push(user);
            }
          });
          Response.Ok(res, reviewers);
        })
        .catch(err => Response.Internal(res, err));
    },
  );

  // Get user self
  app.get(
    '/api/users/me',
    acl.hasPermission('validtoken'),
    function (req, res) {
      User.getByUsername(req.decodedToken.username)
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );

  //get TOTP Qrcode URL
  app.get(
    '/api/users/totp',
    acl.hasPermission('validtoken'),
    function (req, res) {
      User.getTotpQrcode(req.decodedToken.username)
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );

  //setup TOTP
  app.post(
    '/api/users/totp',
    acl.hasPermission('validtoken'),
    function (req, res) {
      if (!req.body.totpToken || !req.body.totpSecret) {
        Response.BadParameters(res, 'Missing some required parameters');
        return;
      }

      User.setupTotp(
        req.body.totpToken,
        req.body.totpSecret,
        req.decodedToken.username,
      )
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );

  //cancel TOTP
  app.delete(
    '/api/users/totp',
    acl.hasPermission('validtoken'),
    function (req, res) {
      if (!req.body.totpToken) {
        Response.BadParameters(res, 'Missing some required parameters');
        return;
      }

      User.cancelTotp(req.body.totpToken, req.decodedToken.username)
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );

  // Get user by username
  app.get(
    '/api/users/:username',
    acl.hasPermission('users:read'),
    function (req, res) {
      User.getByUsername(req.params.username)
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );

  // Create user
  app.post(
    '/api/users',
    acl.hasPermission('users:create'),
    function (req, res) {
      if (
        !req.body.username ||
        !req.body.password ||
        !req.body.firstname ||
        !req.body.lastname
      ) {
        Response.BadParameters(res, 'Missing some required parameters');
        return;
      }
      if (passwordpolicy.strongPassword(req.body.password) !== true) {
        Response.BadParameters(
          res,
          'Password does not match the password policy',
        );
        return;
      }

      var user = {};
      //Required params
      user.username = req.body.username;
      user.password = req.body.password;
      user.firstname = req.body.firstname;
      user.lastname = req.body.lastname;

      //Optionals params
      user.role = req.body.role || 'user';
      if (req.body.email) user.email = req.body.email;
      if (req.body.phone) user.phone = req.body.phone;

      User.create(user)
        .then(msg => Response.Created(res, 'User created successfully'))
        .catch(err => Response.Internal(res, err));
    },
  );

  // Create First User
  app.post('/api/users/init', function (req, res) {
    if (
      !req.body.username ||
      !req.body.password ||
      !req.body.firstname ||
      !req.body.lastname
    ) {
      Response.BadParameters(res, 'Missing some required parameters');
      return;
    }
    if (passwordpolicy.strongPassword(req.body.password) !== true) {
      Response.BadParameters(
        res,
        'Password does not match the password policy',
      );
      return;
    }
    var user = {};
    //Required params
    user.username = req.body.username;
    user.password = req.body.password;
    user.firstname = req.body.firstname;
    user.lastname = req.body.lastname;
    user.role = 'admin';

    User.getAll()
      .then(users => {
        if (users.length === 0)
          User.create(user)
            .then(msg => {
              var newUser = new User();
              //Required params
              newUser.username = req.body.username;
              newUser.password = req.body.password;

              newUser
                .getToken(req.headers['user-agent'])
                .then(msg => {
                  res.cookie('token', `JWT ${msg.token}`, {
                    secure: true,
                    httpOnly: true,
                  });
                  res.cookie('refreshToken', msg.refreshToken, {
                    secure: true,
                    httpOnly: true,
                    path: '/api/users/refreshtoken',
                  });
                  Response.Created(res, msg);
                })
                .catch(err => Response.Internal(res, err));
            })
            .catch(err => Response.Internal(res, err));
        else Response.Forbidden(res, 'Already Initialized');
      })
      .catch(err => Response.Internal(res, err));
  });

  // Update my profile
  app.put(
    '/api/users/me',
    acl.hasPermission('validtoken'),
    function (req, res) {
      if (
        !req.body.currentPassword ||
        (req.body.newPassword && !req.body.confirmPassword) ||
        (req.body.confirmPassword && !req.body.newPassword)
      ) {
        Response.BadParameters(res, 'Missing some required parameters');
        return;
      }
      if (
        req.body.newPassword &&
        passwordpolicy.strongPassword(req.body.newPassword) !== true
      ) {
        Response.BadParameters(
          res,
          'New Password does not match the password policy',
        );
        return;
      }
      if (
        req.body.newPassword &&
        req.body.confirmPassword &&
        req.body.newPassword !== req.body.confirmPassword
      ) {
        Response.BadParameters(res, 'New password validation failed');
        return;
      }

      var user = {};
      // Required params
      user.password = req.body.currentPassword;

      // Optionals params
      if (req.body.username) user.username = req.body.username;
      if (req.body.newPassword) user.newPassword = req.body.newPassword;
      if (req.body.firstname) user.firstname = req.body.firstname;
      if (req.body.lastname) user.lastname = req.body.lastname;
      if (!_.isNil(req.body.email)) user.email = req.body.email;
      if (!_.isNil(req.body.phone)) user.phone = req.body.phone;

      User.updateProfile(req.decodedToken.username, user)
        .then(msg => {
          res.cookie('token', msg.token, { secure: true, httpOnly: true });
          Response.Ok(res, msg);
        })
        .catch(err => Response.Internal(res, err));
    },
  );

  // Update any user (admin only)
  app.put(
    '/api/users/:id',
    acl.hasPermission('users:update'),
    function (req, res) {
      if (
        req.body.password &&
        !passwordpolicy.strongPassword(req.body.password)
      ) {
        Response.BadParameters(
          res,
          'New Password does not match the password policy',
        );
        return;
      }
      var user = {};

      // Optionals params
      if (req.body.username) user.username = req.body.username;
      if (req.body.password) user.password = req.body.password;
      if (req.body.firstname) user.firstname = req.body.firstname;
      if (req.body.lastname) user.lastname = req.body.lastname;
      if (!_.isNil(req.body.email)) user.email = req.body.email;
      if (!_.isNil(req.body.phone)) user.phone = req.body.phone;
      if (req.body.role) user.role = req.body.role;
      if (typeof req.body.totpEnabled === 'boolean')
        user.totpEnabled = req.body.totpEnabled;
      if (typeof req.body.enabled === 'boolean')
        user.enabled = req.body.enabled;

      User.updateUser(req.params.id, user)
        .then(msg => Response.Ok(res, msg))
        .catch(err => Response.Internal(res, err));
    },
  );
};