// This test written in mocha+should.js
var should = require('./init.js');
var async = require('async');

var j = require('../'), db, User;
var ValidationError = j.ValidationError;

function getValidAttributes() {
  return {
    name: 'Anatoliy',
    email: 'email@example.com',
    state: '',
    age: 26,
    gender: 'male',
    createdByAdmin: false,
    createdByScript: true
  };
}

describe('validations', function () {

  before(function (done) {
    db = getSchema();
    User = db.define('User', {
      email: String,
      name: String,
      password: String,
      state: String,
      age: Number,
      gender: String,
      domain: String,
      pendingPeriod: Number,
      createdByAdmin: Boolean,
      createdByScript: Boolean,
      updatedAt: Date
    });
    db.automigrate(done);
  });

  beforeEach(function (done) {
    User.destroyAll(function () {
      delete User.validations;
      done();
    });
  });

  after(function () {
    // db.disconnect();
  });

  describe('commons', function () {

    describe('skipping', function () {

      it('should allow to skip using if: attribute', function () {
        User.validatesPresenceOf('pendingPeriod', {if: 'createdByAdmin'});
        var user = new User;
        user.createdByAdmin = true;
        user.isValid().should.be.false;
        user.errors.pendingPeriod.should.eql(['can\'t be blank']);
        user.pendingPeriod = 1
        user.isValid().should.be.true;
      });

    });

    describe('lifecycle', function () {

      it('should work on create', function (done) {
        delete User.validations;
        User.validatesPresenceOf('name');
        User.create(function (e, u) {
          should.exist(e);
          User.create({name: 'Valid'}, function (e, d) {
            should.not.exist(e);
            done();
          });
        });
      });

      it('should work on update', function (done) {
        delete User.validations;
        User.validatesPresenceOf('name');
        User.create({name: 'Valid'}, function (e, d) {
          d.updateAttribute('name', null, function (e) {
            should.exist(e);
            e.should.be.instanceOf(Error);
            e.should.be.instanceOf(ValidationError);
            d.updateAttribute('name', 'Vasiliy', function (e) {
              should.not.exist(e);
              done();
            });
          })
        });
      });

      it('should return error code', function (done) {
        delete User.validations;
        User.validatesPresenceOf('name');
        User.create(function (e, u) {
          should.exist(e);
          e.details.codes.name.should.eql(['presence']);
          done();
        });
      });

      it('should allow to modify error after validation', function (done) {
        User.afterValidate = function (next) {
          next();
        };
        done();
      });

      it('should include validation messages in err.message', function(done) {
        delete User.validations;
        User.validatesPresenceOf('name');
        User.create(function (e, u) {
          should.exist(e);
          e.message.should.match(/`name` can't be blank/);
          done();
        });
      });

      it('should include model name in err.message', function(done) {
        delete User.validations;
        User.validatesPresenceOf('name');
        User.create(function (e, u) {
          should.exist(e);
          e.message.should.match(/`User` instance/i);
          done();
        });
      });
      
      it('should return validation metadata', function() {
        var expected = {name:[{validation: 'presence', options: {}}]};
        delete User.validations;
        User.validatesPresenceOf('name');
        var validations = User.validations;
        validations.should.eql(expected);
      });
    });
  });

  describe('presence', function () {

    it('should validate presence', function () {
      User.validatesPresenceOf('name', 'email');
      var u = new User;
      u.isValid().should.not.be.true;
      u.name = 1;
      u.email = 2;
      u.isValid().should.be.true;
    });

    it('should skip validation by property (if/unless)', function () {
      User.validatesPresenceOf('domain', {unless: 'createdByScript'});

      var user = new User(getValidAttributes())
      user.isValid().should.be.true;

      user.createdByScript = false;
      user.isValid().should.be.false;
      user.errors.domain.should.eql(['can\'t be blank']);

      user.domain = 'domain';
      user.isValid().should.be.true;
    });

  });
  
  describe('absence', function () {

    it('should validate absence', function () {
      User.validatesAbsenceOf('reserved', { if: 'locked' });
      var u = new User({reserved: 'foo', locked: true});
      u.isValid().should.not.be.true;
      u.reserved = null;
      u.isValid().should.be.true;
      var u = new User({reserved: 'foo', locked: false});
      u.isValid().should.be.true;
    });

  });

  describe('uniqueness', function () {
    it('should validate uniqueness', function (done) {
      User.validatesUniquenessOf('email');
      var u = new User({email: 'hey'});
      Boolean(u.isValid(function (valid) {
        valid.should.be.true;
        u.save(function () {
          var u2 = new User({email: 'hey'});
          u2.isValid(function (valid) {
            valid.should.be.false;
            done();
          });
        });
      })).should.be.false;
    });

    it('should handle same object modification', function (done) {
      User.validatesUniquenessOf('email');
      var u = new User({email: 'hey'});
      Boolean(u.isValid(function (valid) {
        valid.should.be.true;
        u.save(function () {
          u.name = 'Goghi';
          u.isValid(function (valid) {
            valid.should.be.true;
            u.save(done);
          });
        });
        // async validations always falsy when called as sync
      })).should.not.be.ok;
    });

    it('should support multi-key constraint', function(done) {
      var EMAIL = 'user@xample.com';
      var SiteUser = db.define('SiteUser', {
        siteId: String,
        email: String
      });
      SiteUser.validatesUniquenessOf('email', { scopedTo: ['siteId'] });
      async.waterfall([
        function automigrate(next) {
          db.automigrate(next);
        },
        function createSite1User(next) {
          SiteUser.create(
            { siteId: 1, email: EMAIL },
            next);
        },
        function createSite2User(user1, next) {
          SiteUser.create(
            { siteId: 2, email: EMAIL },
            next);
        },
        function validateDuplicateUser(user2, next) {
          var user3 = new SiteUser({ siteId: 1, email: EMAIL });
          user3.isValid(function(valid) {
            valid.should.be.false;
            next();
          });
        }
      ], function(err) {
        if (err && err.name == 'ValidationError') {
          console.error('ValidationError:', err.details.messages);
        }
        done(err);
      });
    });
    
    it('should skip blank values', function (done) {
      User.validatesUniquenessOf('email');
      var u = new User({email: '  '});
      Boolean(u.isValid(function (valid) {
        valid.should.be.true;
        u.save(function () {
          var u2 = new User({email: null});
          u2.isValid(function (valid) {
            valid.should.be.true;
            done();
          });
        });
      })).should.be.false;
    });
    
    it('should work with if/unless', function (done) {
      User.validatesUniquenessOf('email', { 
        if: function() { return true; },
        unless: function() { return false; }
      });
      var u = new User({email: 'hello'});
      Boolean(u.isValid(function (valid) {
        valid.should.be.true;
        done();
      })).should.be.false;
    });
  });

  describe('format', function () {
    it('should validate format');
    it('should overwrite default blank message with custom format message');
  });

  describe('numericality', function () {
    it('should validate numericality');
  });

  describe('inclusion', function () {
    it('should validate inclusion');
  });

  describe('exclusion', function () {
    it('should validate exclusion');
  });

  describe('length', function () {
    it('should validate length');
  });

  describe('custom', function () {
    it('should validate using custom sync validation', function() {
      User.validate('email', function (err) {
        if (this.email === 'hello') err();
      }, { code: 'invalid-email' });
      var u = new User({email: 'hello'});
      Boolean(u.isValid()).should.be.false;
      u.errors.codes.should.eql({ email: ['invalid-email'] });
    });
    
    it('should validate and return detailed error messages', function() {
      User.validate('global', function (err) {
        if (this.email === 'hello' || this.email === 'hey') {
          this.errors.add('email', 'Cannot be `' + this.email + '`', 'invalid-email');
          err(false); // false: prevent global error message
        }
      });
      var u = new User({email: 'hello'});
      Boolean(u.isValid()).should.be.false;
      u.errors.should.eql({ email: ['Cannot be `hello`'] });
      u.errors.codes.should.eql({ email: ['invalid-email'] });
    });
    
    it('should validate using custom async validation', function(done) {
      User.validateAsync('email', function (err, next) {
        process.nextTick(next);
      }, { 
        if: function() { return true; },
        unless: function() { return false; }
      });
      var u = new User({email: 'hello'});
      Boolean(u.isValid(function (valid) {
        valid.should.be.true;
        done();
      })).should.be.false;
    });
  });
});