<?php

/**
 * Tests the Validation lib that's shipped with KO7
 *
 * @group ko7
 * @group ko7.core
 * @group ko7.core.validation
 *
 * @package    KO7
 * @category   Tests
 *
 * @author     BRMatt <matthew@sigswitch.com>
 * @copyright  (c) 2007-2016  Kohana Team
 * @copyright  (c) since 2016 Koseven Team
 * @license    https://koseven.dev/LICENSE
 */
class KO7_ValidationTest extends Unittest_TestCase
{
	/**
	 * Tests Validation::factory()
	 *
	 * Makes sure that the factory method returns an instance of Validation lib
	 * and that it uses the variables passed
	 *
	 * @test
	 */
	public function test_factory_method_returns_instance_with_values()
	{
		$values = [
			'this'			=> 'something else',
			'writing tests' => 'sucks',
			'why the hell'	=> 'amIDoingThis',
		];

		$instance = Validation::factory($values);

		$this->assertTrue($instance instanceof Validation);

		$this->assertSame(
			$values,
			$instance->data()
		);
	}

	/**
	 * When we copy() a validation object, we should have a new validation object
	 * with the exact same attributes, apart from the data, which should be the
	 * same as the array we pass to copy()
	 *
	 * @test
	 * @covers Validation::copy
	 */
	public function test_copy_copies_all_attributes_except_data()
	{
		$validation = new Validation(['foo' => 'bar', 'fud' => 'fear, uncertainty, doubt', 'num' => 9]);

		$validation->rule('num', 'is_int')->rule('foo', 'is_string');

		$copy_data = ['foo' => 'no', 'fud' => 'maybe', 'num' => 42];


		$copy = $validation->copy($copy_data);

		$this->assertNotSame($validation, $copy);

		$this->assertSame($copy_data, $copy->data());
	}

	/**
	 * Adding a label to a field should set it in the labels array
	 * If the label already exists it should overwrite it
	 *
	 * In both cases thefunction should return a reference to $this
	 *
	 * @test
	 * @covers Validation::label
	 */
	public function test_label_adds_and_overwrites_label_and_returns_this()
	{
		$validation = new Validation([]);

		$this->assertSame($validation, $validation->label('email', 'Email Address'));

		$this->assertSame($validation, $validation->label('email', 'Your Email'));

		$validation->label('name', 'Your Name');
	}

	/**
	 * Using labels() we should be able to add / overwrite multiple labels
	 *
	 * The function should also return $this for chaining purposes
	 *
	 * @test
	 * @covers Validation::labels
	 */
	public function test_labels_adds_and_overwrites_multiple_labels_and_returns_this()
	{
		$validation = new Validation([]);
		$initial_data = ['kung fu' => 'fighting', 'fast' => 'cheetah'];

		$this->assertSame($validation, $validation->labels($initial_data));

		$this->assertSame($validation, $validation->labels(['fast' => 'lightning']));
	}

	/**
	 * Using bind() we should be able to add / overwrite multiple bound variables
	 *
	 * The function should also return $this for chaining purposes
	 *
	 * @test
	 * @covers Validation::bind
	 */
	public function test_bind_adds_and_overwrites_multiple_variables_and_returns_this()
	{
		$validation = new Validation([]);
		$data = ['kung fu' => 'fighting', 'fast' => 'cheetah'];
		$bound = [':foo' => 'some value'];

		// Test binding an array of values
		$this->assertSame($validation, $validation->bind($bound));

		// Test binding one value
		$this->assertSame($validation, $validation->bind(':foo', 'some other value'));
	}

	/**
	 * We should be able to used bound variables in callbacks
	 *
	 * @test
	 * @covers Validation::check
	 */
	public function test_bound_callback()
	{
		$data = [
			'kung fu' => 'fighting',
			'fast'    => 'cheetah',
		];
		$validation = new Validation($data);
		$validation->bind(':class', 'Valid')
			// Use the bound value in a callback
			->rule('fast', [':class', 'max_length'], [':value', 2]);

		// The rule should have run and check() should fail
		$this->assertSame($validation->check(), FALSE);
	}

	/**
	 * Provides test data for test_check
	 *
	 * @return array
	 */
	public function provider_check()
	{
		// $data_array, $rules, $labels, $first_expected, $expected_error
		return [
			[
				['foo' => 'bar'],
				['foo' => [['not_empty', NULL]]],
				[],
				TRUE,
				[],
			],
			[
				['unit' => 'test'],
				[
					'foo'  => [['not_empty', NULL]],
					'unit' => [['min_length', [':value', 6]]
					],
				],
				[],
				FALSE,
				[
					'foo' => 'foo must not be empty',
					'unit' => 'unit must be at least 6 characters long'
				],
			],
			[
				['foo' => 'bar'],
				[
					// Tests wildcard rules
					TRUE => [['min_length', [':value', 4]]],
					'foo'  => [
						['not_empty', NULL],
						// Tests the array syntax for callbacks
						[['Valid', 'exact_length'], [':value', 3]],
						// Tests the Class::method syntax for callbacks
						['Valid::exact_length', [':value', 3]],
						// Tests the lambda function syntax for callbacks
						// Commented out for PHP 5.2 support
						// array(function($value){return TRUE;}, array(':value')),
						// Tests using a function as a rule
						['is_string', [':value']],
					],
					// Tests that rules do not run on empty fields unless they are in _empty_rules
					'unit' => [['exact_length', [':value', 4]]],
				],
				[],
				FALSE,
				['foo' => 'foo must be at least 4 characters long'],
			],
			// Switch things around and make :value an array
			[
				['foo' => ['test', 'data']],
				['foo' => [['in_array', ['ko7', ':value']]]],
				[],
				FALSE,
				['foo' => 'foo must be one of the available options'],
			],
			// Test wildcard rules with no other rules
			[
				['foo' => ['test']],
				[TRUE => [['is_string', [':value']]]],
				['foo' => 'foo'],
				FALSE,
				['foo' => '1.foo.is_string'],
			],
			// Test array rules use method as error name
			[
				['foo' => 'test'],
				['foo' => [[['Valid', 'min_length'], [':value', 10]]]],
				[],
				FALSE,
				['foo' => 'foo must be at least 10 characters long'],
			],
		];
	}

	/**
	 * Tests Validation::check()
	 *
	 * @test
	 * @covers Validation::check
	 * @covers Validation::rule
	 * @covers Validation::rules
	 * @covers Validation::errors
	 * @covers Validation::error
	 * @dataProvider provider_check
	 * @param array   $array            The array of data
	 * @param array   $rules            The array of rules
	 * @param array   $labels           The array of labels
	 * @param boolean $expected         Is it valid?
	 * @param boolean $expected_errors  Array of expected errors
	 */
	public function test_check($array, $rules, $labels, $expected, $expected_errors)
	{
		$validation = new Validation($array);

		foreach ($labels as $field => $label)
		{
			$validation->label($field, $label);
		}

		foreach ($rules as $field => $field_rules)
		{
			foreach ($field_rules as $rule)
				$validation->rule($field, $rule[0], $rule[1]);
		}

		$status = $validation->check();
		$errors = $validation->errors(TRUE);
		$this->assertSame($expected, $status);
		$this->assertSame($expected_errors, $errors);

		$validation = new validation($array);
		foreach ($rules as $field => $rules)
		{
			$validation->rules($field, $rules);
		}
		$validation->labels($labels);

		$this->assertSame($expected, $validation->check());
	}

	/**
	 * Tests Validation::check()
	 *
	 * @test
	 * @covers Validation::check
	 */
	public function test_check_stops_when_error_added_by_callback()
	{
		$validation = new Validation([
			'foo' => 'foo',
		]);

		$validation
			->rule('foo', [$this, '_validation_callback'], [':validation'])
			// This rule should never run
			->rule('foo', 'min_length', [':value', 20]);

		$validation->check();
		$errors = $validation->errors();

		$expected = [
			'foo' => [
				0 => '_validation_callback',
				1 => NULL,
			],
		];

		$this->assertSame($errors, $expected);
	}

	public function _validation_callback(Validation $object)
	{
		// Simply add the error
		$object->error('foo', '_validation_callback');
	}

	/**
	 * Provides test data for test_errors()
	 *
	 * @return array
	 */
	public function provider_errors()
	{
		// [data, rules, expected], ...
		return [
			// No Error
			[
				['username' => 'frank'],
				['username' => [['not_empty', NULL]]],
				[],
			],
			// Error from message file
			[
				['username' => ''],
				['username' => [['not_empty', NULL]]],
				['username' => 'username must not be empty'],
			],
			// No error message exists, display the path expected
			[
				['username' => 'John'],
				['username' => [['strpos', [':value', 'KO7']]]],
				['username' => 'Validation.username.strpos'],
			],
		];
	}

	/**
	 * Tests Validation::errors()
	 *
	 * @test
	 * @covers Validation::errors
	 * @dataProvider provider_errors
	 * @param array $array     The array of data
	 * @param array $rules     The array of rules
	 * @param array $expected  Array of expected errors
	 */
	public function test_errors($array, $rules, $expected)
	{
		$validation = Validation::factory($array);

		foreach ($rules as $field => $field_rules)
		{
			$validation->rules($field, $field_rules);
		}

		$validation->check();

		$this->assertSame($expected, $validation->errors('Validation', FALSE));
	}

	/**
	 * Provides test data for test_translated_errors()
	 *
	 * @return array
	 */
	public function provider_translated_errors()
	{
		// [data, rules, expected], ...
		return [
			[
				['Spanish' => ''],
				['Spanish' => [['not_empty', NULL]]],
				// Errors are not translated yet so only the label will translate
				['Spanish' => 'Español must not be empty'],
				['Spanish' => 'Spanish must not be empty'],
			],
		];
	}

	/**
	 * Tests Validation::errors()
	 *
	 * @test
	 * @covers Validation::errors
	 * @dataProvider provider_translated_errors
	 * @param array   $data                   The array of data to test
	 * @param array   $rules                  The array of rules to add
	 * @param array   $translated_expected    The array of expected errors when translated
	 * @param array   $untranslated_expected  The array of expected errors when not translated
	 */
	public function test_translated_errors($data, $rules, $translated_expected, $untranslated_expected)
	{
		$validation = Validation::factory($data);

		$current = i18n::lang();
		i18n::lang('es');

		foreach ($rules as $field => $field_rules)
		{
			$validation->rules($field, $field_rules);
		}

		$validation->check();

		$result_1 = $validation->errors('Validation', TRUE);
		$result_2 = $validation->errors('Validation', 'en');
		$result_3 = $validation->errors('Validation', FALSE);

		// Restore the current language
		i18n::lang($current);

		$this->assertSame($translated_expected, $result_1);
		$this->assertSame($translated_expected, $result_2);
		$this->assertSame($untranslated_expected, $result_3);
	}

	/**
	 * Tests Validation::errors()
	 *
	 * @test
	 * @covers Validation::errors
	 */
	public function test_parameter_labels()
	{
		$validation = Validation::factory(['foo' => 'bar'])
			->rule('foo', 'equals', [':value', 'something'])
			->label('something', 'Spanish');

		$current = i18n::lang();
		i18n::lang('es');

		$validation->check();

		$translated_expected = ['foo' => 'foo must equal Español'];
		$untranslated_expected = ['foo' => 'foo must equal Spanish'];

		$result_1 = $validation->errors('Validation', TRUE);
		$result_2 = $validation->errors('Validation', 'en');
		$result_3 = $validation->errors('Validation', FALSE);

		// Restore the current language
		i18n::lang($current);

		$this->assertSame($translated_expected, $result_1);
		$this->assertSame($translated_expected, $result_2);
		$this->assertSame($untranslated_expected, $result_3);
	}

	/**
	 * Tests Validation::errors()
	 *
	 * @test
	 * @covers Validation::errors
	 */
	public function test_arrays_in_parameters()
	{
		$validation = Validation::factory(['foo' => 'bar'])
			->rule('foo', 'equals', [':value', ['one', 'two']]);

		$validation->check();

		$expected = ['foo' => 'foo must equal one, two'];

		$this->assertSame($expected, $validation->errors('Validation', FALSE));
	}

	/**
	 * Tests Validation::check()
	 *
	 * @test
	 * @covers Validation::check
	 */
	public function test_data_stays_unaltered()
	{
		$validation = Validation::factory(['foo' => 'bar'])
			->rule('something', 'not_empty');

		$before = $validation->data();
		$validation->check();
		$after = $validation->data();

		$expected = ['foo' => 'bar'];

		$this->assertSame($expected, $before);
		$this->assertSame($expected, $after);
	}

	/**
	 * Tests Validation::errors()
	 *
	 * @test
	 * @covers Validation::errors
	 */
	public function test_object_parameters_not_in_messages()
	{
		$validation = Validation::factory(['foo' => 'foo'])
			->rule('bar', 'matches', [':validation', ':field', 'foo']);

		$validation->check();
		$errors = $validation->errors('validation');
		$expected = ['bar' => 'bar must be the same as foo'];

		$this->assertSame($expected, $errors);
	}


	/**
	 * Tests Validation::data()
	 *
	 * @test
	 * @covers Validation::data
	 */
	public function test_data_returns_original_array()
	{
		$data = [
			'one' => 'hello',
			'two' => 'world',
			'ten' => '',
		];

		$validation = Validation::factory($data);

		$this->assertSame($data, $validation->data());
	}

	// @codingStandardsIgnoreStart
	public function test_offsetExists()
	// @codingStandardsIgnoreEnd
	{
		$array = [
			'one' => 'Hello',
			'two' => 'World',
			'ten' => NULL,
		];

		$validation = Validation::factory($array);

		$this->assertTrue(isset($validation['one']));
		$this->assertFalse(isset($validation['ten']));
		$this->assertFalse(isset($validation['five']));
	}

	// @codingStandardsIgnoreStart
	public function test_offsetSet_throws_exception()
	// @codingStandardsIgnoreEnd
	{
		$this->expectException('KO7_Exception');

		$validation = Validation::factory([]);

		// Validation is read-only
		$validation['field'] = 'something';
	}

	// @codingStandardsIgnoreStart
	public function test_offsetGet()
	// @codingStandardsIgnoreEnd
	{
		$array = [
			'one' => 'Hello',
			'two' => 'World',
			'ten' => NULL,
		];

		$validation = Validation::factory($array);

		$this->assertSame($array['one'], $validation['one']);
		$this->assertSame($array['two'], $validation['two']);
		$this->assertSame($array['ten'], $validation['ten']);
	}

	// @codingStandardsIgnoreStart
	public function test_offsetUnset()
	// @codingStandardsIgnoreEnd
	{
		$this->expectException('KO7_Exception');

		$validation = Validation::factory([
			'one' => 'Hello, World!',
		]);

		// Validation is read-only
		unset($validation['one']);
	}

	/**
	 * http://koseven.dev/issues/4365
	 *
	 * @test
	 * @covers Validation::errors
	 */
	public function test_error_type_check()
	{
		$array = [
			'email' => 'not an email address',
		];

		$validation = Validation::factory($array)
			->rule('email', 'not_empty')
			->rule('email', 'email')
			;

		$validation->check();

		$errors = $validation->errors('tests/validation/error_type_check');

		$this->assertSame($errors, $validation->errors('validation'));
	}

	/**
	 * Provides test data for test_rule_label_regex
	 *
	 * @return array
	 */
	public function provider_rule_label_regex()
	{
		// $data, $field, $rules, $expected
		return [
			[
				[
					'email1' => '',
				],
				'email1',
				[
					[
						'not_empty'
					]
				],
				[
					'email1' => 'email1 must not be empty'
				],
			]
		];
	}

	/**
	 * http://koseven.dev/issues/4201
	 *
	 * @test
	 * @ticket 4201
	 * @covers Validation::rule
	 * @dataProvider provider_rule_label_regex
	 */
	public function test_rule_label_regex($data, $field, $rules, $expected)
	{
		$validation = Validation::factory($data)->rules($field, $rules);

		$validation->check();

		$errors = $validation->errors('');

		$this->assertSame($errors, $expected);
	}
}