<?php

namespace Mpociot\ApiDoc\Tests;

use RecursiveIteratorIterator;
use RecursiveDirectoryIterator;
use Orchestra\Testbench\TestCase;
use Illuminate\Support\Facades\App;
use Illuminate\Contracts\Console\Kernel;
use Mpociot\ApiDoc\Tests\Fixtures\TestController;
use Mpociot\ApiDoc\ApiDocGeneratorServiceProvider;
use Illuminate\Support\Facades\Route as RouteFacade;
use Mpociot\ApiDoc\Tests\Fixtures\TestResourceController;

class GenerateDocumentationTest extends TestCase
{
    /**
     * Setup the test environment.
     */
    public function setUp()
    {
        parent::setUp();
    }

    public function tearDown()
    {
        // delete the generated docs - compatible cross-platform
        $dir = __DIR__.'/../public/docs';
        if (is_dir($dir)) {
            $files = new RecursiveIteratorIterator(
                new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
                RecursiveIteratorIterator::CHILD_FIRST
            );

            foreach ($files as $fileinfo) {
                $todo = ($fileinfo->isDir() ? 'rmdir' : 'unlink');
                $todo($fileinfo->getRealPath());
            }
            rmdir($dir);
        }
    }

    /**
     * @param \Illuminate\Foundation\Application $app
     *
     * @return array
     */
    protected function getPackageProviders($app)
    {
        return [
            \Dingo\Api\Provider\LaravelServiceProvider::class,
            ApiDocGeneratorServiceProvider::class,
        ];
    }

    /** @test */
    public function console_command_does_not_work_with_closure()
    {
        RouteFacade::get('/api/closure', function () {
            return 'hi';
        });
        RouteFacade::get('/api/test', TestController::class.'@withEndpointDescription');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $output = $this->artisan('apidoc:generate');

        $this->assertContains('Skipping route: [GET] api/closure', $output);
        $this->assertContains('Processed route: [GET] api/test', $output);
    }

    /** @test */
    public function console_command_does_not_work_with_closure_using_dingo()
    {
        $api = app(\Dingo\Api\Routing\Router::class);
        $api->version('v1', function ($api) {
            $api->get('/closure', function () {
                return 'foo';
            });
            $api->get('/test', TestController::class.'@withEndpointDescription');
        });

        config(['apidoc.router' => 'dingo']);
        config(['apidoc.routes.0.match.prefixes' => ['*']]);
        config(['apidoc.routes.0.match.versions' => ['v1']]);
        $output = $this->artisan('apidoc:generate');

        $this->assertContains('Skipping route: [GET] closure', $output);
        $this->assertContains('Processed route: [GET] test', $output);
    }

    /** @test */
    public function can_skip_single_routes()
    {
        RouteFacade::get('/api/skip', TestController::class.'@skip');
        RouteFacade::get('/api/test', TestController::class.'@withEndpointDescription');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $output = $this->artisan('apidoc:generate');

        $this->assertContains('Skipping route: [GET] api/skip', $output);
        $this->assertContains('Processed route: [GET] api/test', $output);
    }

    /** @test */
    public function can_parse_resource_routes()
    {
        RouteFacade::resource('/api/users', TestResourceController::class);

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $this->artisan('apidoc:generate');

        $fixtureMarkdown = __DIR__.'/Fixtures/resource_index.md';
        $generatedMarkdown = __DIR__.'/../public/docs/source/index.md';
        $this->assertFilesHaveSameContent($fixtureMarkdown, $generatedMarkdown);
    }

    /** @test */
    public function can_parse_partial_resource_routes()
    {
        if (version_compare(App::version(), '5.6', '<')) {
            RouteFacade::resource('/api/users', TestResourceController::class, [
                'only' => [
                    'index', 'create',
                ],
            ]);
        } else {
            RouteFacade::resource('/api/users', TestResourceController::class)
                ->only(['index', 'create']);
        }

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $this->artisan('apidoc:generate');

        $fixtureMarkdown = __DIR__.'/Fixtures/partial_resource_index.md';
        $generatedMarkdown = __DIR__.'/../public/docs/source/index.md';
        $this->assertFilesHaveSameContent($fixtureMarkdown, $generatedMarkdown);

        if (version_compare(App::version(), '5.6', '<')) {
            RouteFacade::apiResource('/api/users', TestResourceController::class, [
                'only' => [
                    'index', 'create',
                ],
            ]);
        } else {
            RouteFacade::apiResource('/api/users', TestResourceController::class)
                ->only(['index', 'create']);
        }
        $this->artisan('apidoc:generate');

        $fixtureMarkdown = __DIR__.'/Fixtures/partial_resource_index.md';
        $generatedMarkdown = __DIR__.'/../public/docs/source/index.md';
        $this->assertFilesHaveSameContent($fixtureMarkdown, $generatedMarkdown);
    }

    /** @test */
    public function generated_markdown_file_is_correct()
    {
        RouteFacade::get('/api/withDescription', TestController::class.'@withEndpointDescription');
        RouteFacade::get('/api/withResponseTag', TestController::class.'@withResponseTag');
        RouteFacade::get('/api/withBodyParameters', TestController::class.'@withBodyParameters');
        RouteFacade::get('/api/withAuthTag', TestController::class.'@withAuthenticatedTag');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        config([
            'apidoc.routes.0.apply.headers' => [
                'Authorization' => 'customAuthToken',
                'Custom-Header' => 'NotSoCustom',
            ],
        ]);
        $this->artisan('apidoc:generate');

        $generatedMarkdown = __DIR__.'/../public/docs/source/index.md';
        $compareMarkdown = __DIR__.'/../public/docs/source/.compare.md';
        $fixtureMarkdown = __DIR__.'/Fixtures/index.md';

        $this->markTestSkipped('Test is non-deterministic since example values for body parameters are random.');
        $this->assertFilesHaveSameContent($fixtureMarkdown, $generatedMarkdown);
        $this->assertFilesHaveSameContent($fixtureMarkdown, $compareMarkdown);
    }

    /** @test */
    public function can_prepend_and_append_data_to_generated_markdown()
    {
        RouteFacade::get('/api/test', TestController::class.'@withEndpointDescription');
        RouteFacade::get('/api/responseTag', TestController::class.'@withResponseTag');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $this->artisan('apidoc:generate');

        $prependMarkdown = __DIR__.'/Fixtures/prepend.md';
        $appendMarkdown = __DIR__.'/Fixtures/append.md';
        copy($prependMarkdown, __DIR__.'/../public/docs/source/prepend.md');
        copy($appendMarkdown, __DIR__.'/../public/docs/source/append.md');

        $this->artisan('apidoc:generate');

        $generatedMarkdown = __DIR__.'/../public/docs/source/index.md';
        $this->assertContainsIgnoringWhitespace($this->getFileContents($prependMarkdown), $this->getFileContents($generatedMarkdown));
        $this->assertContainsIgnoringWhitespace($this->getFileContents($appendMarkdown), $this->getFileContents($generatedMarkdown));
    }

    /** @test */
    public function generated_postman_collection_file_is_correct()
    {
        RouteFacade::get('/api/test', TestController::class.'@withEndpointDescription');
        RouteFacade::post('/api/responseTag', TestController::class.'@withResponseTag');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        $this->artisan('apidoc:generate');

        $generatedCollection = json_decode(file_get_contents(__DIR__.'/../public/docs/collection.json'));
        $generatedCollection->info->_postman_id = '';
        $fixtureCollection = json_decode(file_get_contents(__DIR__.'/Fixtures/collection.json'));
        $this->assertEquals($generatedCollection, $fixtureCollection);
    }

    /** @test */
    public function can_append_custom_http_headers()
    {
        RouteFacade::get('/api/headers', TestController::class.'@checkCustomHeaders');

        config(['apidoc.routes.0.match.prefixes' => ['api/*']]);
        config([
            'apidoc.routes.0.apply.headers' => [
                'Authorization' => 'customAuthToken',
                'Custom-Header' => 'NotSoCustom',
            ],
        ]);
        $this->artisan('apidoc:generate');

        $generatedMarkdown = $this->getFileContents(__DIR__.'/../public/docs/source/index.md');
        $this->assertContainsIgnoringWhitespace('"Authorization": "customAuthToken","Custom-Header":"NotSoCustom"', $generatedMarkdown);
    }

    /** @test */
    public function can_parse_utf8_response()
    {
        RouteFacade::get('/api/utf8', TestController::class.'@withUtf8ResponseTag');

        config(['apidoc.routes.0.prefixes' => ['api/*']]);
        $this->artisan('apidoc:generate');

        $generatedMarkdown = file_get_contents(__DIR__.'/../public/docs/source/index.md');
        $this->assertContains('Лорем ипсум долор сит амет', $generatedMarkdown);
    }

    /**
     * @param string $command
     * @param array $parameters
     *
     * @return mixed
     */
    public function artisan($command, $parameters = [])
    {
        $this->app[Kernel::class]->call($command, $parameters);

        return $this->app[Kernel::class]->output();
    }

    private function assertFilesHaveSameContent($pathToExpected, $pathToActual)
    {
        $actual = $this->getFileContents($pathToActual);
        $expected = $this->getFileContents($pathToExpected);
        $this->assertSame($expected, $actual);
    }

    /**
     * Get the contents of a file in a cross-platform-compatible way.
     *
     * @param $path
     *
     * @return string
     */
    private function getFileContents($path)
    {
        return str_replace("\r\n", "\n", file_get_contents($path));
    }

    /**
     * Assert that a string contains another string, ignoring all whitespace.
     *
     * @param $needle
     * @param $haystack
     */
    private function assertContainsIgnoringWhitespace($needle, $haystack)
    {
        $haystack = preg_replace('/\s/', '', $haystack);
        $needle = preg_replace('/\s/', '', $needle);
        $this->assertContains($needle, $haystack);
    }
}