'use strict';

var mdValidator = require('node-validator');
var mdErrors = require('./md-errors');
var bcrypt = require('bcrypt-as-promised');
var newId = require('uuid-pure').newId;

module.exports = function(db) {
  var module = {};

  module.connectPGP = function() {
    return new Promise(function(resolve, reject) {
      db.query('select $1::int as number', [1])
        .then((data)=> {
          resolve(data);
        })
        .catch((error)=> {
          reject(error);
        });
    });
  };
  module.sqlInsertAccount = function(data) {
    let _data = data;
    _data.uid = newId();
    return new Promise(function(resolve, reject) {
      db.func('insert_user',
        [_data.username, _data.email, _data.hash, _data.uid])
        .then(()=> {
          return resolve('ok');
        })
        .catch((err)=> {
          return reject(err);
        });
    });
  };
  module.sqlGetAccount = function(email) {
    return new Promise(function(resolve, reject) {
      db.oneOrNone('select * from logins where email=$1;', [email])
        .then(function(d) {
          return resolve(d);
        })
        .catch((err)=> {
          return reject(err);
        });
    });
  };
  module.sqlGetAccountDetails = function(uid) {
        return new Promise(function(resolve, reject) {
          db.one('select * from getAccountDetails($1);',[uid])
              .then(function(d) {
                console.log('+ sqlGetAccountDetails');
                console.log(d);
                return resolve(d);
              })
              .catch((err)=> {
                return reject(err);
              });
        });
      };
  module.sqlUpsertProfile = function(data) {
    var propArray = [
      data.uid,
      data.forename,
      data.surname,
      data.gender,
      data.dob,
      data.bio
    ];

    return new Promise(function(resolve, reject) {
      db.func('upsert_profile', propArray)
        .then(()=> {
          return resolve(true);
        })
        .catch((err)=> {
          return reject(err);
        });
    });
  };

  module.sqlMakeMemberOf = function(cid, uid) {
      var propArray = [cid,uid];

      return new Promise(function(resolve, reject) {
        db.func('makeMemberOf', propArray)
          .then(()=> {
            return resolve(true);
          })
          .catch((err)=> {
            return reject(err);
          });
      });
    };

  module.sqlGetProfile = function(uid) {
    return new Promise(function(resolve, reject) {
      db.oneOrNone('select * from profile where uid=$1;', [uid])
        .then(function(d) {
          return resolve(d);
        })
        .catch((err)=> {
          return reject(err);
        });
    });
  };

  module.addNewAccount = function(data) {
    var self = this;
    return new Promise((resolve, reject) => {

      let _data = {};
      _data.username = data.username.trim();
      _data.password = data.password.trim();
      _data.email = data.email.trim();

      if (Object.keys(data).length === 3) {

        if (_data.username.length === 0 || _data.password.length === 0 || _data.email.length === 0)        {
          return reject(mdErrors.error(1000));
        }

        if (mdValidator.Email(data.email) === false)        {
          return reject(mdErrors.error(1001));
        } else {
          // It should be possible to insert the user now.
          bcrypt.hash(data.password,10).then((d) => {
            _data.hash = d;
            self.sqlInsertAccount(_data)
                      .then(()=> {
                        return resolve({reply: 'user added'});
                      })
                      .catch((err)=> {
                        return reject(err);
                      });
          });

        }
      } else {
        // Error - required details missing
        return reject(mdErrors.error(1002));

      }
    });
  };
  module.findAccount = function(data) {

    var _data = data;
    return new Promise((resolve, reject) => {
      this.sqlGetAccount(_data.email)
        .then((row) => {
          if (row === null) {
            return reject(mdErrors.error(1004));
          }
          // Check password against hash held in db
          // noinspection JSUnresolvedVariable
          bcrypt.compare(_data.password, row.password_hash)
            .then(function() {
              let loginDetails = {
                id: row.id,
                username: row.username,
                email: row.email,
                uid: row.uid
              };
              return resolve(loginDetails);
            })
            // Failure, reject
            .catch(function() {
              return reject(mdErrors.error(1004));
            });

        })
        .catch(function(err) {
          return reject(err);
        });
    });
  };
  module.addInsertProfile = function(data) {
    return new Promise((resolve, reject) => {
      this.sqlUpsertProfile(data)
        .then((d)=> {
          return resolve(d);
        })
        .catch((err)=> {
          return reject(err);
        });
    });
  };

  //makeMemberOf(cid, uid)
  module.makeMemberOf = function(cid, uid) {
      return new Promise((resolve, reject) => {
        this.sqlMakeMemberOf(cid, uid)
          .then((d)=> {
            return resolve(d);
          })
          .catch((err)=> {
            return reject(err);
          });
      });
    };

  return module;
};