<?php

use JsonApi\Errors\RecordNotFoundException;
use JsonApi\Errors\UnprocessableEntityException;
use JsonApi\Routes\Files\FileRefsCreate;
use JsonApi\Schemas\ContentTermsOfUse;
use JsonApi\Schemas\FileRef;

require_once 'FilesTestHelper.php';

class FileRefsCreateTest extends \Codeception\Test\Unit
{
    use FilesTestHelper;

    /**
     * @var \UnitTester
     */
    protected $tester;

    protected function _before()
    {
        \DBManager::getInstance()->setConnection('studip', $this->getModule('\\Helper\\StudipDb')->dbh);
    }

    protected function _after()
    {
    }

    public function testShouldCreateFileRefInFolder()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $courseId = 'a07535cf2f8a72df33c12ddfa4b53dde';
        $folder = $this->prepareTopFolder($credentials, $courseId);
        $license = $this->getSampleLicense();

        $name = 'filename.jpg';
        $description = 'a description';

        $response = $this->sendCreateFileRefInFolder(
            $credentials,
            $folder,
            $name,
            $description,
            $license
        );

        $this->assertFileRefCreated($response, $name, $description, $license);
    }

    public function testShouldFailOnMissingFolder()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $missingFolder = \Folder::buildExisting(['id' => 'foo']);
        $license = $this->getSampleLicense();

        $name = 'filename.jpg';
        $description = 'a description';

        $this->tester->expectThrowable(
            RecordNotFoundException::class,
            function () use ($credentials, $missingFolder, $name, $description, $license) {
                $this->sendCreateFileRefInFolder(
                    $credentials,
                    $missingFolder,
                    $name,
                    $description,
                    $license
                );
            }
        );
    }

    public function testShouldFailOnEmptyName()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $courseId = 'a07535cf2f8a72df33c12ddfa4b53dde';
        $folder = $this->prepareTopFolder($credentials, $courseId);
        $license = $this->getSampleLicense();

        $name = '';
        $description = 'a description';

        $this->tester->expectThrowable(
            UnprocessableEntityException::class,
            function () use ($credentials, $folder, $name, $description, $license) {
                $this->sendCreateFileRefInFolder(
                    $credentials,
                    $folder,
                    $name,
                    $description,
                    $license
                );
            }
        );
    }

    public function testShouldFailOnMissingLicense()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $courseId = 'a07535cf2f8a72df33c12ddfa4b53dde';
        $folder = $this->prepareTopFolder($credentials, $courseId);

        $name = 'a-real-filename.gif';
        $description = 'a description';

        $this->tester->expectThrowable(
            UnprocessableEntityException::class,
            function () use ($credentials, $folder, $name, $description) {
                $this->sendCreateFileRefInFolder(
                    $credentials,
                    $folder,
                    $name,
                    $description,
                    null
                );
            }
        );
    }

    public function testShouldCreateLinkIfSameUser()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $courseId = 'a07535cf2f8a72df33c12ddfa4b53dde';
        $folder = $this->prepareTopFolder($credentials, $courseId);
        $license = $this->getSampleLicense();

        $file = $this->createFileInFolder($credentials, $folder, 'name.jpg', 'some description');

        $numFiles = \File::countBySQL('1');
        $numFileRefs = \FileRef::countBySQL('1');

        $response = $this->sendCopyFileInFolder(
            $credentials,
            $folder,
            $file,
            $name = "another-name.jpg",
            $description = "another description",
            $license
        );

        // same number of Files and one more FileRef
        $this->assertSame($numFiles + 0, \File::countBySQL('1'));
        $this->assertSame($numFileRefs + 1, \FileRef::countBySQL('1'));

        $this->assertFileRefCreated($response, $name, $description, $license);
    }

    public function testShouldCreateCopyUnlessSameUser()
    {
        $credentials = $this->tester->getCredentialsForTestDozent();
        $credentialsAutor = $this->tester->getCredentialsForTestAutor();
        $courseId = 'a07535cf2f8a72df33c12ddfa4b53dde';
        $folder = $this->prepareTopFolder($credentials, $courseId);
        $license = $this->getSampleLicense();

        $file = $this->createFileInFolder($credentials, $folder, 'name.jpg', 'some description');

        $numFiles = \File::countBySQL('1');
        $numFileRefs = \FileRef::countBySQL('1');

        $response = $this->sendCopyFileInFolder(
            $credentialsAutor,
            $folder,
            $file,
            $name = "another-name.jpg",
            $description = "another description",
            $license
        );

        // one more File and one more FileRef
        $this->assertSame($numFiles + 1, \File::countBySQL('1'));
        $this->assertSame($numFileRefs + 1, \FileRef::countBySQL('1'));

        $this->assertFileRefCreated($response, $name, $description, $license);
    }

    // **** helper functions ****
    private function sendCreateFileRefInFolder($user, $folder, $name, $description, $license)
    {
        $app = $this->tester->createApp(
            $user,
            'POST',
            '/folders/{id}/file-refs',
            FileRefsCreate::class
        );

        $requestBuilder = $this->tester->createRequestBuilder($user);
        $requestBuilder
            ->setJsonApiBody($this->prepareValidFileRefBody($name, $description, $license))
            ->setUri('/folders/'.($folder->id).'/file-refs')
            ->create();

        return $this->tester->sendMockRequest($app, $requestBuilder->getRequest());
    }

    private function sendCopyFileInFolder($credentials, $folder, $file, $name, $description, $license)
    {
        $app = $this->tester->createApp(
            $credentials,
            'POST',
            '/folders/{id}/file-refs',
            FileRefsCreate::class
        );

        $requestBuilder = $this->tester->createRequestBuilder($credentials);
        $requestBuilder
            ->setJsonApiBody(
                $this->prepareValidFileRefBody(
                    $name,
                    $description,
                    $license,
                    $file
                )
            )
            ->setUri('/folders/'.($folder->id).'/file-refs')
            ->create();

        return $this->tester->sendMockRequest($app, $requestBuilder->getRequest());
    }

    private function assertFileRefCreated($response, $name, $description, $license)
    {
        $this->tester->assertTrue($response->isSuccessfulDocument([201]));

        $document = $response->document();
        $this->tester->assertTrue($document->isSingleResourceDocument());

        $resource = $document->primaryResource();
        $this->tester->assertNotEmpty($resource->id());
        $this->tester->assertSame(FileRef::TYPE, $resource->type());

        $this->tester->assertSame($name, $resource->attribute('name'));
        $this->tester->assertSame($description, $resource->attribute('description'));

        $resourceLink = $resource->relationship('terms-of-use')->firstResourceLink();
        $this->tester->assertSame($license->id, $resourceLink['id']);
    }
}