var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var bcrypt = require('bcrypt'), SALT_WORK_FACTOR = 10;


var UserSchema = new Schema({
  name: {
    first: { type: String, required: true },
    last: { type: String, required: true, default: "resident" }
  },
  uuid: { type: String, required: true, index: { unique: true } },
  passhash: { type: String, required: true },
  salt: { type: String, required: true },
  username: { type: String, unique: true, lowercase: true, trim: true, index: true },
  email: { type: String, unique: true, lowercase: true, trim: true, index: true, match: /.+\@.+\..+/  },
  role: { type: String, default: "user", required: true, enum: ['user', 'admin'] },
  status: { type: String, default: "active", required: true },
  permissions: [String],
  iat: [String],
  verified: { type: Date }
});

UserSchema.virtual('Fullname').get(function() {
  var n = this.name.first + " " + this.name.last;
  return n.toString();
});

UserSchema.virtual('isBanned').get(function() {
  return (this.status == "banned");
});
UserSchema.virtual('isAdmin').get(function() {
  return (this.role == "admin");
});

UserSchema.pre('save', function(next) {
  var user = this;
  if (!user.isModified('passhash')) return next();
  bcrypt.genSalt(SALT_WORK_FACTOR, function (err, salt) {
    if (err) return next(err);
    user.salt = salt;
    bcrypt.hash(user.passhash, salt, function(err, hash) {
      if (err) return next(err);
      user.passhash = hash;
      next();
    });
  });
});

var ErrorMsgs = UserSchema.statics.ErrorMsgs = {
  INVALID_NAME = 0,
  FAILED_LOGIN = 1,
  INCORRECT_PASSWORD = 2,
  INVALID_EMAIL = 3,
  BANNED_ACCOUNT = 4,
  LOCKED_ACCOUNT = 5,
  VERIFY_EMAIL = 6
};

UserSchema.path('role').validate(function(value) {
  return /user|admin/i.test(value);
}, 'Invalid Role');

UserSchema.methods.checkPass = function (password, callback) {
  bcrypt.compare(password, this.passhash, function (err, match) {
    if (err) return callback(err);
    callback(null, match);
  });
};

UserSchema.statics.Auth = function(name, password, callback) {

};

module.exports = mongoose.model('User', UserSchema);