<?php namespace Tests;

use BookStack\Uploads\Attachment;
use BookStack\Entities\Page;
use BookStack\Auth\Permissions\PermissionService;

class AttachmentTest extends TestCase
{
    /**
     * Get a test file that can be uploaded
     * @param $fileName
     * @return \Illuminate\Http\UploadedFile
     */
    protected function getTestFile($fileName)
    {
        return new \Illuminate\Http\UploadedFile(base_path('tests/test-data/test-file.txt'), $fileName, 'text/plain', 55, null, true);
    }

    /**
     * Uploads a file with the given name.
     * @param $name
     * @param int $uploadedTo
     * @return \Illuminate\Foundation\Testing\TestResponse
     */
    protected function uploadFile($name, $uploadedTo = 0)
    {
        $file = $this->getTestFile($name);
        return $this->call('POST', '/attachments/upload', ['uploaded_to' => $uploadedTo], [], ['file' => $file], []);
    }

    /**
     * Delete all uploaded files.
     * To assist with cleanup.
     */
    protected function deleteUploads()
    {
        $fileService = $this->app->make(\BookStack\Uploads\AttachmentService::class);
        foreach (\BookStack\Uploads\Attachment::all() as $file) {
            $fileService->deleteFile($file);
        }
    }

    public function test_file_upload()
    {
        $page = Page::first();
        $this->asAdmin();
        $admin = $this->getAdmin();
        $fileName = 'upload_test_file.txt';

        $expectedResp = [
            'name' => $fileName,
            'uploaded_to'=> $page->id,
            'extension' => 'txt',
            'order' => 1,
            'created_by' => $admin->id,
            'updated_by' => $admin->id,
        ];

        $upload = $this->uploadFile($fileName, $page->id);
        $upload->assertStatus(200);

        $attachment = Attachment::query()->orderBy('id', 'desc')->first();
        $expectedResp['path'] = $attachment->path;

        $upload->assertJson($expectedResp);
        $this->assertDatabaseHas('attachments', $expectedResp);

        $this->deleteUploads();
    }

    public function test_file_upload_does_not_use_filename()
    {
        $page = Page::first();
        $fileName = 'upload_test_file.txt';


        $upload = $this->asAdmin()->uploadFile($fileName, $page->id);
        $upload->assertStatus(200);

        $attachment = Attachment::query()->orderBy('id', 'desc')->first();
        $this->assertStringNotContainsString($fileName, $attachment->path);
        $this->assertStringEndsWith('.txt', $attachment->path);
    }

    public function test_file_display_and_access()
    {
        $page = Page::first();
        $this->asAdmin();
        $fileName = 'upload_test_file.txt';

        $upload = $this->uploadFile($fileName, $page->id);
        $upload->assertStatus(200);
        $attachment = Attachment::orderBy('id', 'desc')->take(1)->first();

        $pageGet = $this->get($page->getUrl());
        $pageGet->assertSeeText($fileName);
        $pageGet->assertSee($attachment->getUrl());

        $attachmentGet = $this->get($attachment->getUrl());
        $attachmentGet->assertSee('Hi, This is a test file for testing the upload process.');

        $this->deleteUploads();
    }

    public function test_attaching_link_to_page()
    {
        $page = Page::first();
        $admin = $this->getAdmin();
        $this->asAdmin();

        $linkReq = $this->call('POST', 'attachments/link', [
            'link' => 'https://example.com',
            'name' => 'Example Attachment Link',
            'uploaded_to' => $page->id,
        ]);

        $expectedResp = [
            'path' => 'https://example.com',
            'name' => 'Example Attachment Link',
            'uploaded_to' => $page->id,
            'created_by' => $admin->id,
            'updated_by' => $admin->id,
            'external' => true,
            'order' => 1,
            'extension' => ''
        ];

        $linkReq->assertStatus(200);
        $linkReq->assertJson($expectedResp);
        $this->assertDatabaseHas('attachments', $expectedResp);
        $attachment = Attachment::orderBy('id', 'desc')->take(1)->first();

        $pageGet = $this->get($page->getUrl());
        $pageGet->assertSeeText('Example Attachment Link');
        $pageGet->assertSee($attachment->getUrl());

        $attachmentGet = $this->get($attachment->getUrl());
        $attachmentGet->assertRedirect('https://example.com');

        $this->deleteUploads();
    }

    public function test_attachment_updating()
    {
        $page = Page::first();
        $this->asAdmin();

        $this->call('POST', 'attachments/link', [
            'link' => 'https://example.com',
            'name' => 'Example Attachment Link',
            'uploaded_to' => $page->id,
        ]);

        $attachmentId = \BookStack\Uploads\Attachment::first()->id;

        $update = $this->call('PUT', 'attachments/' . $attachmentId, [
            'uploaded_to' => $page->id,
            'name' => 'My new attachment name',
            'link' => 'https://test.example.com'
        ]);

        $expectedResp = [
            'path' => 'https://test.example.com',
            'name' => 'My new attachment name',
            'uploaded_to' => $page->id
        ];

        $update->assertStatus(200);
        $update->assertJson($expectedResp);
        $this->assertDatabaseHas('attachments', $expectedResp);

        $this->deleteUploads();
    }

    public function test_file_deletion()
    {
        $page = Page::first();
        $this->asAdmin();
        $fileName = 'deletion_test.txt';
        $this->uploadFile($fileName, $page->id);

        $attachment = Attachment::query()->orderBy('id', 'desc')->first();
        $filePath = storage_path($attachment->path);
        $this->assertTrue(file_exists($filePath), 'File at path ' . $filePath . ' does not exist');

        $attachment = \BookStack\Uploads\Attachment::first();
        $this->delete($attachment->getUrl());

        $this->assertDatabaseMissing('attachments', [
            'name' => $fileName
        ]);
        $this->assertFalse(file_exists($filePath), 'File at path ' . $filePath . ' was not deleted as expected');

        $this->deleteUploads();
    }

    public function test_attachment_deletion_on_page_deletion()
    {
        $page = Page::first();
        $this->asAdmin();
        $fileName = 'deletion_test.txt';
        $this->uploadFile($fileName, $page->id);

        $attachment = Attachment::query()->orderBy('id', 'desc')->first();
        $filePath = storage_path($attachment->path);

        $this->assertTrue(file_exists($filePath), 'File at path ' . $filePath . ' does not exist');
        $this->assertDatabaseHas('attachments', [
            'name' => $fileName
        ]);

        $this->call('DELETE', $page->getUrl());

        $this->assertDatabaseMissing('attachments', [
            'name' => $fileName
        ]);
        $this->assertFalse(file_exists($filePath), 'File at path ' . $filePath . ' was not deleted as expected');

        $this->deleteUploads();
    }

    public function test_attachment_access_without_permission_shows_404()
    {
        $admin = $this->getAdmin();
        $viewer = $this->getViewer();
        $page = Page::first();

        $this->actingAs($admin);
        $fileName = 'permission_test.txt';
        $this->uploadFile($fileName, $page->id);
        $attachment = Attachment::orderBy('id', 'desc')->take(1)->first();

        $page->restricted = true;
        $page->permissions()->delete();
        $page->save();
        $this->app[PermissionService::class]->buildJointPermissionsForEntity($page);
        $page->load('jointPermissions');

        $this->actingAs($viewer);
        $attachmentGet = $this->get($attachment->getUrl());
        $attachmentGet->assertStatus(404);
        $attachmentGet->assertSee("Attachment not found");

        $this->deleteUploads();
    }
}