// Copyright IBM Corp. 2015,2016. All Rights Reserved.
// Node module: loopback-datasource-juggler
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT

// This test written in mocha+should.js
var async = require('async');
var should = require('./init.js');
var db, User, options, ModelWithForceId, whereCount = 0;
var j = require('../');
var ValidationError = j.ValidationError;

var INITIAL_NAME = 'Bert';
var NEW_NAME = 'Ernie';
var INVALID_DATA = { name: null };
var VALID_DATA = { name: INITIAL_NAME };

describe('optional-validation', function() {

  before(function(done) {
    db = getSchema();
    ModelWithForceId = db.createModel(
    'ModelWithForceId',
    { name: String },
    { forceId: true });
    User = db.define('User', {
      seq: { type: Number, index: true },
      name: { type: String, index: true, sort: true },
      email: { type: String, index: true },
      birthday: { type: Date, index: true },
      role: { type: String, index: true },
      order: { type: Number, index: true, sort: true },
      vip: { type: Boolean },
    }, { forceId: true, strict: true });
    db.automigrate(['ModelWithForceId', 'User'], done);
  });

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

  function expectValidationError(done) {
    return function(err, result) {
      should.exist(err);
      err.should.be.instanceOf(Error);
      err.should.be.instanceOf(ValidationError);
      done();
    };
  }

  function expectCreateSuccess(data, done) {
    if (done === undefined && typeof data === 'function') {
      done = data;
      data = { name: INITIAL_NAME };
    }
    return function(err, instance) {
      if (err) return done(err);
      instance.should.be.instanceOf(User);
      if (data.name) {
        instance.name.should.eql(data.name || INITIAL_NAME);
      } else {
        should.not.exist(instance.name);
      }
      done();
    };
  }

  function expectChangeSuccess(data, done) {
    if (done === undefined && typeof data === 'function') {
      done = data;
      data = { name: NEW_NAME };
    }
    return function(err, instance) {
      if (err) return done(err);
      instance.should.be.instanceOf(User);
      if (data.name) {
        instance.name.should.eql(data.name || NEW_NAME);
      } else {
        should.not.exist(instance.name);
      }
      done();
    };
  }

  function createUserAndChangeName(name, cb) {
    User.create(VALID_DATA, { validate: true }, function(err, d) {
      d.name = name;
      cb(err, d);
    });
  }

  function createUser(cb) {
    User.create(VALID_DATA, { validate: true }, cb);
  }

  function callUpdateOrCreateWithExistingUserId(name, options, cb) {
    User.create({ 'name': 'Groover' }, function(err, user) {
      if (err) return cb(err);
      var data = { name: name };
      data.id = user.id;
      User.updateOrCreate(data, options, cb);
    });
  }

  function getNewWhere() {
    return { name: 'DoesNotExist' + (whereCount++) };
  }

  describe('forceId', function() {
    context('replaceAttributes', function() {
      it('should not fail if you do not pass the Primary key in data object',
      function(done) {
        ModelWithForceId.create({ name: 'foo' }, function(err, created) {
          if (err) return done(err);
          created.replaceAttributes({ name: 'bar' }, function(err, data) {
            done(err);
          });
        });
      });

      it('should fail if you pass the Primary key in data object',
      function(done) {
        ModelWithForceId.create({ name: 'foo' }, function(err, created) {
          if (err) return done(err);
          created.replaceAttributes({ name: 'bar', id: 999 },
          function(err, data) {
            should.exist(err);
            done();
          });
        });
      });
    });
  });

  describe('no model setting', function() {

    describe('method create', function() {
      it('should throw on create with validate:true with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: true }, expectValidationError(done));
      });

      it('should NOT throw on create with validate:false with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: false }, expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on create with validate:true with valid data', function(done) {
        User.create(VALID_DATA, { validate: true }, expectCreateSuccess(done));
      });

      it('should NOT throw on create with validate:false with valid data', function(done) {
        User.create(VALID_DATA, { validate: false }, expectCreateSuccess(done));
      });

      it('should throw on create with invalid data', function(done) {
        User.create(INVALID_DATA, expectValidationError(done));
      });

      it('should NOT throw on create with valid data', function(done) {
        User.create(VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method findOrCreate', function() {
      it('should throw on findOrCreate with validate:true with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: true },
                          expectValidationError(done));
      });

      it('should NOT throw on findOrCreate with validate:false with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: false },
                          expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on findOrCreate with validate:true with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: true },
                          expectCreateSuccess(done));
      });

      it('should NOT throw on findOrCreate with validate:false with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: false },
                          expectCreateSuccess(done));
      });

      it('should throw on findOrCreate with invalid data', function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, expectValidationError(done));
      });

      it('should NOT throw on findOrCreate with valid data', function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method updateOrCreate on existing data', function() {
      it('should throw on updateOrCreate(id) with validate:true with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: true },
                                             expectValidationError(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: false },
                                             expectChangeSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:true with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: true },
                                             expectChangeSuccess(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: false },
                                             expectChangeSuccess(done));
      });

      // backwards compatible with validateUpsert
      it('should NOT throw on updateOrCreate(id) with invalid data', function(done) {
        callUpdateOrCreateWithExistingUserId(null, expectChangeSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on updateOrCreate(id) with valid data', function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, expectChangeSuccess(done));
      });
    });

    describe('method save', function() {
      it('should throw on save with {validate:true} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save({ validate: true }, expectValidationError(done));
        });
      });

      it('should NOT throw on save with {validate:false} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(INVALID_DATA, done));
        });
      });

      it('should NOT throw on save with {validate:true} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: true }, expectChangeSuccess(done));
        });
      });

      it('should NOT throw on save with {validate:false} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(done));
        });
      });

      it('should throw on save(cb) with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save(expectValidationError(done));
        });
      });

      it('should NOT throw on save(cb) with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save(expectChangeSuccess(done));
        });
      });
    });

    describe('method updateAttributes', function() {
      it('should throw on updateAttributes with {validate:true} with invalid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes(INVALID_DATA, { validate: true }, expectValidationError(done));
        });
      });

      it('should NOT throw on updateAttributes with {validate:false} with invalid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes(INVALID_DATA, { validate: false }, expectChangeSuccess(INVALID_DATA, done));
        });
      });

      it('should NOT throw on updateAttributes with {validate:true} with valid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes({ 'name': NEW_NAME }, { validate: true }, expectChangeSuccess(done));
        });
      });

      it('should NOT throw on updateAttributes with {validate:false} with valid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes({ 'name': NEW_NAME }, { validate: false }, expectChangeSuccess(done));
        });
      });

      it('should throw on updateAttributes(cb) with invalid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes(INVALID_DATA, expectValidationError(done));
        });
      });

      it('should NOT throw on updateAttributes(cb) with valid data', function(done) {
        createUser(function(err, d) {
          d.updateAttributes({ 'name': NEW_NAME }, expectChangeSuccess(done));
        });
      });
    });

  });

  describe('model setting: automaticValidation: false', function() {

    before(function(done) {
      User.settings.automaticValidation = false;
      done();
    });

    describe('method create', function() {
      it('should throw on create with validate:true with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: true }, expectValidationError(done));
      });

      it('should NOT throw on create with validate:false with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: false }, expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on create with validate:true with valid data', function(done) {
        User.create(VALID_DATA, { validate: true }, expectCreateSuccess(done));
      });

      it('should NOT throw on create with validate:false with valid data', function(done) {
        User.create(VALID_DATA, { validate: false }, expectCreateSuccess(done));
      });

      it('should NOT throw on create with invalid data', function(done) {
        User.create(INVALID_DATA, expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on create with valid data', function(done) {
        User.create(VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method findOrCreate', function() {
      it('should throw on findOrCreate with validate:true with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: true },
                          expectValidationError(done));
      });

      it('should NOT throw on findOrCreate with validate:false with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: false },
                          expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on findOrCreate with validate:true with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: true },
                          expectCreateSuccess(done));
      });

      it('should NOT throw on findOrCreate with validate:false with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: false },
                          expectCreateSuccess(done));
      });

      it('should NOT throw on findOrCreate with invalid data', function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA,
                          expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on findOrCreate with valid data', function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method updateOrCreate on existing data', function() {
      it('should throw on updateOrCreate(id) with validate:true with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: true },
                                             expectValidationError(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: false },
                                             expectChangeSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:true with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: true },
                                             expectChangeSuccess(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: false },
                                             expectChangeSuccess(done));
      });

      it('should NOT throw on updateOrCreate(id) with invalid data', function(done) {
        callUpdateOrCreateWithExistingUserId(null, expectChangeSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on updateOrCreate(id) with valid data', function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, expectChangeSuccess(done));
      });
    });

    describe('method save', function() {
      it('should throw on save with {validate:true} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save({ validate: true }, expectValidationError(done));
        });
      });

      it('should NOT throw on save with {validate:false} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(INVALID_DATA, done));
        });
      });

      it('should NOT throw on save with {validate:true} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: true }, expectChangeSuccess(done));
        });
      });

      it('should NOT throw on save with {validate:false} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(done));
        });
      });

      it('should NOT throw on save(cb) with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save(expectChangeSuccess(INVALID_DATA, done));
        });
      });

      it('should NOT throw on save(cb) with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save(expectChangeSuccess(done));
        });
      });
    });

  });

  describe('model setting: automaticValidation: true', function() {

    before(function(done) {
      User.settings.automaticValidation = true;
      done();
    });

    describe('method create', function() {
      it('should throw on create with validate:true with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: true }, expectValidationError(done));
      });

      it('should NOT throw on create with validate:false with invalid data', function(done) {
        User.create(INVALID_DATA, { validate: false }, expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on create with validate:true with valid data', function(done) {
        User.create(VALID_DATA, { validate: true }, expectCreateSuccess(done));
      });

      it('should NOT throw on create with validate:false with valid data', function(done) {
        User.create(VALID_DATA, { validate: false }, expectCreateSuccess(done));
      });

      it('should throw on create with invalid data', function(done) {
        User.create(INVALID_DATA, expectValidationError(done));
      });

      it('should NOT throw on create with valid data', function(done) {
        User.create(VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method findOrCreate', function() {
      it('should throw on findOrCreate with validate:true with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: true },
                          expectValidationError(done));
      });

      it('should NOT throw on findOrCreate with validate:false with invalid data',
      function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, { validate: false },
                          expectCreateSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on findOrCreate with validate:true with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: true },
                          expectCreateSuccess(done));
      });

      it('should NOT throw on findOrCreate with validate:false with valid data',
      function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, { validate: false },
                          expectCreateSuccess(done));
      });

      it('should throw on findOrCreate with invalid data', function(done) {
        User.findOrCreate(getNewWhere(), INVALID_DATA, expectValidationError(done));
      });

      it('should NOT throw on findOrCreate with valid data', function(done) {
        User.findOrCreate(getNewWhere(), VALID_DATA, expectCreateSuccess(done));
      });
    });

    describe('method updateOrCreate on existing data', function() {
      it('should throw on updateOrCreate(id) with validate:true with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: true },
                                             expectValidationError(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with invalid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(null, { validate: false },
                                             expectChangeSuccess(INVALID_DATA, done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:true with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: true },
                                             expectChangeSuccess(done));
      });

      it('should NOT throw on updateOrCreate(id) with validate:false with valid data',
      function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, { validate: false },
                                             expectChangeSuccess(done));
      });

      it('should throw on updateOrCreate(id) with invalid data', function(done) {
        callUpdateOrCreateWithExistingUserId(null, expectValidationError(done));
      });

      it('should NOT throw on updateOrCreate(id) with valid data', function(done) {
        callUpdateOrCreateWithExistingUserId(NEW_NAME, expectChangeSuccess(done));
      });
    });

    describe('method save', function() {
      it('should throw on save with {validate:true} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save(options, expectValidationError(done));
        });
      });

      it('should NOT throw on save with {validate:false} with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(INVALID_DATA, done));
        });
      });

      it('should NOT throw on save with {validate:true} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: true }, expectChangeSuccess(done));
        });
      });

      it('should NOT throw on save with {validate:false} with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save({ validate: false }, expectChangeSuccess(done));
        });
      });

      it('should throw on save(cb) with invalid data', function(done) {
        createUserAndChangeName(null, function(err, d) {
          d.save(expectValidationError(done));
        });
      });

      it('should NOT throw on save(cb) with valid data', function(done) {
        createUserAndChangeName(NEW_NAME, function(err, d) {
          d.save(expectChangeSuccess(done));
        });
      });
    });

  });

});