<?PHP
/**
 * Tests for PUQI.
 *
 * @author Joshua Ramon Enslin <joshua@museum-digital.de>
 */
declare(strict_types = 1);

use PHPUnit\Framework\TestCase;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\Small;

/**
 * Tests for PUQI.
 */
#[small]
#[CoversClass(\MDPuqi::class)]
final class MDPuqiTest extends TestCase {
    /**
     * Provider for licenses.
     *
     * @return Generator<array{0: string, 1: MDPuqiMessageStatus, 2: bool}>
     */
    public static function licenseProvider():Generator {

        yield 'Empty' => ['', MDPuqiMessageStatus::warning, false];
        yield 'Open' => ['CC0', MDPuqiMessageStatus::praise, true];
        yield 'Open Attr' => ['CC BY', MDPuqiMessageStatus::praise, true];
        yield 'Closed' => ['RR-F', MDPuqiMessageStatus::warning, false];

    }

    /**
     * Provider for image sizes. 0: width, 1: height, 2: expected status, 3: expected score.
     *
     * @return Generator<array{0: int, 1: int, 2: MDPuqiMessageStatus, 3: int}>
     */
    public static function imgSizesProvider():Generator {

        yield 'Both too small' => [MDPuqi::THRESHOLD_IMG_TOO_SMALL - 1, MDPuqi::THRESHOLD_IMG_TOO_SMALL - 1, MDPuqiMessageStatus::warning, MDPuqi::QI_PENALTY_IMAGE_TOO_SMALL];
        yield 'Width too small' => [MDPuqi::THRESHOLD_IMG_TOO_SMALL - 1, MDPuqi::THRESHOLD_IMG_TOO_SMALL, MDPuqiMessageStatus::warning, MDPuqi::QI_PENALTY_IMAGE_SMALL];
        yield 'Height too small' => [MDPuqi::THRESHOLD_IMG_TOO_SMALL, MDPuqi::THRESHOLD_IMG_TOO_SMALL - 1, MDPuqiMessageStatus::warning, MDPuqi::QI_PENALTY_IMAGE_SMALL];

        yield 'Both small' => [MDPuqi::THRESHOLD_IMG_SMALL - 1, MDPuqi::THRESHOLD_IMG_SMALL - 1, MDPuqiMessageStatus::warning, MDPuqi::QI_PENALTY_IMAGE_SMALL];

        yield 'Both good sized' => [MDPuqi::THRESHOLD_IMG_GOOD_SIZE_SHORTER + 1, MDPuqi::THRESHOLD_IMG_GOOD_SIZE_LONGER + 1, MDPuqiMessageStatus::praise, MDPuqi::QI_REWARD_IMAGE_SIZE_LARGE];

    }

    /**
     * Test for license.
     *
     * @param string              $input         Input string.
     * @param MDPuqiMessageStatus $warningStatus Expected message status.
     * @param boolean             $positive      Positive or negative result.
     *
     * @return void
     */
    #[DataProvider('licenseProvider')]
    public function testMetadataLicensesResultInExpectedAccessment(string $input, MDPuqiMessageStatus $warningStatus, bool $positive):void {

        $tlLoader = new MDTlLoader("abc", "en");
        $puqi = new MDPuqi($tlLoader);
        $puqi->checkMetadataLicense($input);
        $msgs = $puqi->getMessages();

        self::assertEquals(1, count($msgs));
        $msg = $msgs[0];

        self::assertEquals($warningStatus, $msg->status);
        $score = $puqi->getScore();
        self::assertEquals($positive, $score > 0, "Expected score to be positive or negative, got the oppite result. Score is: " . $score);

    }

    /**
     * Test for license.
     *
     * @param string              $input         Input string.
     * @param MDPuqiMessageStatus $warningStatus Expected message status.
     * @param boolean             $positive      Positive or negative result.
     *
     * @return void
     */
    #[DataProvider('licenseProvider')]
    public function testImageLicensesResultInExpectedAccessment(string $input, MDPuqiMessageStatus $warningStatus, bool $positive):void {

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));
        $puqi->checkImageLicenses([['license' => $input, 'rightsholder' => 'Somebody']]);
        $msgs = $puqi->getMessages();

        self::assertEquals(1, count($msgs));
        $msg = $msgs[0];

        self::assertEquals($warningStatus, $msg->status);
        $score = $puqi->getScore();
        self::assertEquals($positive, $score > 0, "Expected score to be positive or negative, got the oppite result. Score is: " . $score);

        // Get score. Having the same 100 times should not inflate the score.
        $expectedMaxScore = $score * MDPuqi::THRESHOLD_MANY_IMAGES;

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));

        $inp = [];
        for ($i = 0; $i < MDPuqi::THRESHOLD_MANY_IMAGES * 10; $i++) {
            $inp[] = ['license' => $input, 'rightsholder' => 'Somebody'];
        }
        $puqi->checkImageLicenses($inp);
        self::assertEquals($expectedMaxScore, $puqi->getScore(), "Expected max. score to be stopped from increasing by threshold. It was not.");

    }

    /**
     * Test for image sizes.
     *
     * @param integer             $width          Width.
     * @param integer             $height         Height.
     * @param MDPuqiMessageStatus $expectedStatus Expected message status.
     * @param integer             $expectedScore  Expected score.
     *
     * @return void
     */
    #[DataProvider('imgSizesProvider')]
    public function testImageSizesResultInExpectedAccessment(int $width, int $height, MDPuqiMessageStatus $expectedStatus, int $expectedScore):void {

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));
        $puqi->checkImageSizes([['width' => $width, 'height' => $height]]);
        $msgs = $puqi->getMessages();

        self::assertEquals(1, count($msgs));
        $msg = $msgs[0];

        self::assertEquals($expectedStatus, $msg->status);
        self::assertEquals($expectedScore, $puqi->getScore());

        // Get score. Having the same 100 times should not inflate the score.
        $expectedMaxScore = $expectedScore * MDPuqi::THRESHOLD_MANY_IMAGES;

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));
        $inp = [];
        for ($i = 0; $i < MDPuqi::THRESHOLD_MANY_IMAGES * 10; $i++) {
            $inp[] = ['width' => $width, 'height' => $height];
        }
        $puqi->checkImageSizes($inp);
        self::assertEquals($expectedMaxScore, $puqi->getScore(), "Expected max. score to be stopped from increasing by threshold. It was not.");

    }

    /**
     * Test that more than ten images do not result in inflated score.
     * Case: checkImageCount.
     *
     * @return void
     */
    public function testManyImagesDoesNotInflateScoreByCount():void {

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));
        $puqi->checkImageCount(500);
        $msgs = $puqi->getMessages();

        $score = $puqi->getScore();
        self::assertEquals(MDPuqi::THRESHOLD_MANY_IMAGES * MDPuqi::QI_REWARD_IMGS_RESOURCES_MULTIPLIER, $score, "Image count eval: Score differs from expected. Messages: " . var_export($puqi->getMessages(), true));

    }

    /**
     * Data provider for tag.
     * 0: Input number of tags.
     * 1: Expected score.
     *
     * @return Generator<array{0: int, 1: int}>
     */
    public static function tagNoAndScoreProvider():Generator {

        yield 'No tags' => [0, 0 + MDPuqi::QI_PENALTY_NO_TAG];
        yield 'One tag' => [1, 0 + MDPuqi::QI_PENALTY_ONLY_ONE_TAG];
        yield 'Two tag' => [2, 0 + MDPuqi::QI_PENALTY_ONLY_TWO_TAG];
        yield 'Regular number of tags' => [5, 0 + 5 * MDPuqi::QI_REWARD_TAGS_MULTIPLIER];
        yield 'Number of tags above threshold' => [MDPuqi::THRESHOLD_TAGS_TOO_MANY + 1, 0 + MDPuqi::THRESHOLD_TAGS_TOO_MANY * MDPuqi::QI_REWARD_TAGS_MULTIPLIER + 1 * MDPuqi::QI_REWARD_TAGS_MULTIPLIER_ABOVE_THRESHOLD];

    }

    /**
     * Test for tag evaluation.
     *
     * @param integer $noOfTags      Input number of tags.
     * @param integer $expectedScore Expected score.
     *
     * @return void
     */
    #[DataProvider('tagNoAndScoreProvider')]
    public function testTagEvaluation(int $noOfTags, int $expectedScore):void {

        $puqi = new MDPuqi(new MDTlLoader("abc", "en"));
        $puqi->checkEvents([], [], [], [], $noOfTags);

        $score = $puqi->getScore();
        self::assertEquals(MDPuqi::QI_PENALTY_NO_EVENTS + $expectedScore, $score, "Tag eval: Score differs from expected. Messages: " . var_export($puqi->getMessages(), true));

    }
}