<?php

class TestTimberImageResize extends Timber_UnitTestCase {

	function set_up() {
		parent::set_up();
		if ( ! extension_loaded( 'gd' ) ) {
			self::markTestSkipped( 'Image resizing tests requires GD extension' );
		}
	}

	function testCropCenter() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 100, 300, 'center');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_black = TestTimberImage::checkPixel($resized, 10, 20, '#000');
		$is_white = TestTimberImage::checkPixel($resized, 10, 120, '#FFFFFF');
		$is_gray = TestTimberImage::checkPixel($resized, 10, 220, '#aaa', '#ccc');

		$this->assertTrue( $is_white );
		$this->assertTrue( $is_black );
		$this->assertTrue( $is_gray );
	}

	function testCropFalse() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 100, 200, false);

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_red = TestTimberImage::checkPixel($resized, 20, 20, '#ff0000', '#ff0800');
		$is_green = TestTimberImage::checkPixel($resized, 0, 100, '#00ff00');
		$is_magenta = TestTimberImage::checkPixel($resized, 90, 10, '#ff00ff');
		$is_cyan = TestTimberImage::checkPixel($resized, 90, 199, '#00ffff');
		$is_blue = TestTimberImage::checkPixel($resized, 90, 199, '#0000ff');
		$this->assertTrue( $is_red );
		$this->assertTrue( $is_green );
		$this->assertTrue( $is_magenta );
		$this->assertTrue( $is_cyan );
		$this->assertFalse( $is_blue );

		$is_1by2 = TestTimberImage::checkSize($resized, 100, 200);
		$this->assertTrue( $is_1by2 );
	}

	function testCropRight() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 100, 300, 'right');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_magenta = TestTimberImage::checkPixel($resized, 50, 50, '#ff00ff');
		$this->assertTrue( $is_magenta );
	}

	function testCropTop() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 300, 100, 'top');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_magenta = TestTimberImage::checkPixel($resized, 290, 90, '#ff00ff');
		$this->assertTrue( $is_magenta );
	}

	function testCropBottom() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 300, 100, 'bottom');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_teal = TestTimberImage::checkPixel($resized, 290, 90, '#00ffff');
		$this->assertTrue( $is_teal );
	}

	function testCropBottomCenter() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 300, 100, 'bottom-center');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_teal = TestTimberImage::checkPixel($resized, 200, 50, '#00ffff');
		$this->assertTrue( $is_teal );
	}

	function testCropTopCenter() {
		$cropper = TestTimberImage::copyTestImage('cropper.png');
		$resized = TimberImageHelper::resize($cropper, 300, 100, 'top-center');

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_red = TestTimberImage::checkPixel($resized, 100, 50, '#ff0000', '#ff0800');
		$this->assertTrue( $is_red );
	}

	function testCropHeight() {
		$arch = TestTimberImage::copyTestImage('arch.jpg');
		$resized = TimberImageHelper::resize($arch, false, 250);

		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$is_sized = TestTimberImage::checkSize($resized, 375, 250);
		$this->assertTrue( $is_sized );
	}

	function testWPMLurlRemote() {
		// this test replicates the url issue caused by the WPML language identifier in the url
		// However, WPML can't be installed with composer so this test mocks the WPML plugin

		// WPML uses a filter to alter the home_url
		$home_url_filter = function( $url ) { return $url.'/en'; };
		add_filter( 'home_url', $home_url_filter, -10, 4 );

		$img = 'https://raw.githubusercontent.com/timber/timber/master/tests/assets/arch-2night.jpg';
		// test with a local and external file
		$resized = TimberImageHelper::resize($img, 50, 50);

		// make sure the base url has not been duplicated (https://github.com/timber/timber/issues/405)
		$this->assertLessThanOrEqual( 1, substr_count($resized, 'example.org') );
		// make sure the image has been resized
		$resized = TimberUrlHelper::url_to_file_system( $resized );
		$this->assertTrue( TestTimberImage::checkSize($resized, 50, 50), 'image should be resized' );

	}

	function testWPMLurlLocal() {
		// this test replicates the url issue caused by the WPML language identifier in the url
		// However, WPML can't be installed with composer so this test mocks the WPML plugin

		// WPML uses a filter to alter the home_url
		$home_url_filter = function( $url ) { return $url.'/en'; };
		add_filter( 'home_url', $home_url_filter, -10, 4 );

		// test with a local and external file
		$img = 'arch.jpg';
		$img = TestTimberImage::copyTestImage($img);

		$resized = TimberImageHelper::resize($img, 50, 50);

		// make sure the base url has not been duplicated (https://github.com/timber/timber/issues/405)
		$this->assertLessThanOrEqual( 1, substr_count($resized, 'example.org') );
		// make sure the image has been resized
		$resized = TimberUrlHelper::url_to_file_system( $resized );
		$this->assertTrue( TestTimberImage::checkSize($resized, 50, 50), 'image should be resized' );

	}

	function testJPEGQualityDefault() {
		//make image at best quality
		$arch = TestTimberImage::copyTestImage('arch.jpg');
		$resized = Timber\ImageHelper::resize($arch, 500, 500, 'default', true);
		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$fileSizeDefault = filesize($resized);
		$this->assertGreaterThan(20000, $fileSizeDefault);
		$this->assertLessThan(75000, $fileSizeDefault);
	}

	function testJPEGQualityHigh() {
		//make image at best quality
		add_filter('wp_editor_set_quality', function(){
			return 100;
		});
		$arch = TestTimberImage::copyTestImage('arch.jpg');
		$resized = Timber\ImageHelper::resize($arch, 500, 500, 'default', true);
		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$fileSizeBig = filesize($resized);
		$this->assertGreaterThan(43136, $fileSizeBig);
	}

	function testJPEGQualityLow() {
		//make image at best quality
		add_filter('wp_editor_set_quality', function(){
			return 1;
		});
		$arch = TestTimberImage::copyTestImage('arch.jpg');
		$resized = Timber\ImageHelper::resize($arch, 500, 500, 'default', true);
		$resized = str_replace('http://example.org', '', $resized);
		$resized = TimberUrlHelper::url_to_file_system( $resized );

		$fileSizeSmall = filesize($resized);
		$this->assertLessThan(43136, $fileSizeSmall);
	}

}
