<?php

namespace Tests\Entity;

use BookStack\Entities\Models\Book;
use BookStack\Entities\Models\BookChild;
use BookStack\Entities\Models\Bookshelf;
use BookStack\Entities\Repos\BookRepo;
use Tests\TestCase;

class BookTest extends TestCase
{
    public function test_create()
    {
        $book = Book::factory()->make([
            'name' => 'My First Book',
        ]);

        $resp = $this->asEditor()->get('/books');
        $this->withHtml($resp)->assertElementContains('a[href="' . url('/create-book') . '"]', 'Create New Book');

        $resp = $this->get('/create-book');
        $this->withHtml($resp)->assertElementContains('form[action="' . url('/books') . '"][method="POST"]', 'Save Book');

        $resp = $this->post('/books', $book->only('name', 'description_html'));
        $resp->assertRedirect('/books/my-first-book');

        $resp = $this->get('/books/my-first-book');
        $resp->assertSee($book->name);
        $resp->assertSee($book->descriptionInfo()->getPlain());
    }

    public function test_create_uses_different_slugs_when_name_reused()
    {
        $book = Book::factory()->make([
            'name' => 'My First Book',
        ]);

        $this->asEditor()->post('/books', $book->only('name', 'description_html'));
        $this->asEditor()->post('/books', $book->only('name', 'description_html'));

        $books = Book::query()->where('name', '=', $book->name)
            ->orderBy('id', 'desc')
            ->take(2)
            ->get();

        $this->assertMatchesRegularExpression('/my-first-book-[0-9a-zA-Z]{3}/', $books[0]->slug);
        $this->assertEquals('my-first-book', $books[1]->slug);
    }

    public function test_create_sets_tags()
    {
        // Cheeky initial update to refresh slug
        $this->asEditor()->post('books', [
            'name'             => 'My book with tags',
            'description_html' => '<p>A book with tags</p>',
            'tags'             => [
                [
                    'name'  => 'Category',
                    'value' => 'Donkey Content',
                ],
                [
                    'name'  => 'Level',
                    'value' => '5',
                ],
            ],
        ]);

        /** @var Book $book */
        $book = Book::query()->where('name', '=', 'My book with tags')->firstOrFail();
        $tags = $book->tags()->get();

        $this->assertEquals(2, $tags->count());
        $this->assertEquals('Donkey Content', $tags[0]->value);
        $this->assertEquals('Level', $tags[1]->name);
    }

    public function test_update()
    {
        $book = $this->entities->book();
        // Cheeky initial update to refresh slug
        $this->asEditor()->put($book->getUrl(), ['name' => $book->name . '5', 'description_html' => $book->description_html]);
        $book->refresh();

        $newName = $book->name . ' Updated';
        $newDesc = $book->description_html . '<p>with more content</p>';

        $resp = $this->get($book->getUrl('/edit'));
        $resp->assertSee($book->name);
        $resp->assertSee($book->description_html);
        $this->withHtml($resp)->assertElementContains('form[action="' . $book->getUrl() . '"]', 'Save Book');

        $resp = $this->put($book->getUrl(), ['name' => $newName, 'description_html' => $newDesc]);
        $resp->assertRedirect($book->getUrl() . '-updated');

        $resp = $this->get($book->getUrl() . '-updated');
        $resp->assertSee($newName);
        $resp->assertSee($newDesc, false);
    }

    public function test_update_sets_tags()
    {
        $book = $this->entities->book();

        $this->assertEquals(0, $book->tags()->count());

        // Cheeky initial update to refresh slug
        $this->asEditor()->put($book->getUrl(), [
            'name' => $book->name,
            'tags' => [
                [
                    'name'  => 'Category',
                    'value' => 'Dolphin Content',
                ],
                [
                    'name'  => 'Level',
                    'value' => '5',
                ],
            ],
        ]);

        $book->refresh();
        $tags = $book->tags()->get();

        $this->assertEquals(2, $tags->count());
        $this->assertEquals('Dolphin Content', $tags[0]->value);
        $this->assertEquals('Level', $tags[1]->name);
    }

    public function test_delete()
    {
        $book = Book::query()->whereHas('pages')->whereHas('chapters')->first();
        $this->assertNull($book->deleted_at);
        $pageCount = $book->pages()->count();
        $chapterCount = $book->chapters()->count();

        $deleteViewReq = $this->asEditor()->get($book->getUrl('/delete'));
        $deleteViewReq->assertSeeText('Are you sure you want to delete this book?');

        $deleteReq = $this->delete($book->getUrl());
        $deleteReq->assertRedirect(url('/books'));
        $this->assertActivityExists('book_delete', $book);

        $book->refresh();
        $this->assertNotNull($book->deleted_at);

        $this->assertTrue($book->pages()->count() === 0);
        $this->assertTrue($book->chapters()->count() === 0);
        $this->assertTrue($book->pages()->withTrashed()->count() === $pageCount);
        $this->assertTrue($book->chapters()->withTrashed()->count() === $chapterCount);
        $this->assertTrue($book->deletions()->count() === 1);

        $redirectReq = $this->get($deleteReq->baseResponse->headers->get('location'));
        $this->assertNotificationContains($redirectReq, 'Book Successfully Deleted');
    }

    public function test_delete_with_shelf_context_returns_to_shelf_view_after_delete()
    {
        $shelf = $this->entities->shelfHasBooks();
        /** @var Book $book */
        $book = $shelf->books()->first();

        $this->asEditor()->get($shelf->getUrl());
        $this->get($book->getUrl());
        $this->get($book->getUrl('/delete'));
        $resp = $this->delete($book->getUrl());

        $resp->assertRedirect($shelf->getUrl());
    }

    public function test_cancel_on_create_page_leads_back_to_books_listing()
    {
        $resp = $this->asEditor()->get('/create-book');
        $this->withHtml($resp)->assertElementContains('form a[href="' . url('/books') . '"]', 'Cancel');
    }

    public function test_cancel_on_edit_book_page_leads_back_to_book()
    {
        $book = $this->entities->book();
        $resp = $this->asEditor()->get($book->getUrl('/edit'));
        $this->withHtml($resp)->assertElementContains('form a[href="' . $book->getUrl() . '"]', 'Cancel');
    }

    public function test_next_previous_navigation_controls_show_within_book_content()
    {
        $book = $this->entities->book();
        $chapter = $book->chapters->first();

        $resp = $this->asEditor()->get($chapter->getUrl());
        $this->withHtml($resp)->assertElementContains('#sibling-navigation', 'Next');
        $this->withHtml($resp)->assertElementContains('#sibling-navigation', substr($chapter->pages[0]->name, 0, 20));

        $resp = $this->get($chapter->pages[0]->getUrl());
        $this->withHtml($resp)->assertElementContains('#sibling-navigation', substr($chapter->pages[1]->name, 0, 20));
        $this->withHtml($resp)->assertElementContains('#sibling-navigation', 'Previous');
        $this->withHtml($resp)->assertElementContains('#sibling-navigation', substr($chapter->name, 0, 20));
    }

    public function test_recently_viewed_books_updates_as_expected()
    {
        $books = Book::take(2)->get();

        $resp = $this->asAdmin()->get('/books');
        $this->withHtml($resp)->assertElementNotContains('#recents', $books[0]->name)
            ->assertElementNotContains('#recents', $books[1]->name);

        $this->get($books[0]->getUrl());
        $this->get($books[1]->getUrl());

        $resp = $this->get('/books');
        $this->withHtml($resp)->assertElementContains('#recents', $books[0]->name)
            ->assertElementContains('#recents', $books[1]->name);
    }

    public function test_popular_books_updates_upon_visits()
    {
        $books = Book::take(2)->get();

        $resp = $this->asAdmin()->get('/books');
        $this->withHtml($resp)->assertElementNotContains('#popular', $books[0]->name)
            ->assertElementNotContains('#popular', $books[1]->name);

        $this->get($books[0]->getUrl());
        $this->get($books[1]->getUrl());
        $this->get($books[0]->getUrl());

        $resp = $this->get('/books');
        $this->withHtml($resp)->assertElementContains('#popular .book:nth-child(1)', $books[0]->name)
            ->assertElementContains('#popular .book:nth-child(2)', $books[1]->name);
    }

    public function test_books_view_shows_view_toggle_option()
    {
        /** @var Book $book */
        $editor = $this->users->editor();
        setting()->putUser($editor, 'books_view_type', 'list');

        $resp = $this->actingAs($editor)->get('/books');
        $this->withHtml($resp)->assertElementContains('form[action$="/preferences/change-view/books"]', 'Grid View');
        $this->withHtml($resp)->assertElementExists('button[name="view"][value="grid"]');

        $resp = $this->patch("/preferences/change-view/books", ['view' => 'grid']);
        $resp->assertRedirect();
        $this->assertEquals('grid', setting()->getUser($editor, 'books_view_type'));

        $resp = $this->actingAs($editor)->get('/books');
        $this->withHtml($resp)->assertElementContains('form[action$="/preferences/change-view/books"]', 'List View');
        $this->withHtml($resp)->assertElementExists('button[name="view"][value="list"]');

        $resp = $this->patch("/preferences/change-view/books", ['view_type' => 'list']);
        $resp->assertRedirect();
        $this->assertEquals('list', setting()->getUser($editor, 'books_view_type'));
    }

    public function test_description_limited_to_specific_html()
    {
        $book = $this->entities->book();

        $input = '<h1>Test</h1><p id="abc" href="beans">Content<a href="#cat" target="_blank" data-a="b">a</a><section>Hello</section></p>';
        $expected = '<p>Content<a href="#cat" target="_blank">a</a></p>';

        $this->asEditor()->put($book->getUrl(), [
            'name' => $book->name,
            'description_html' => $input
        ]);

        $book->refresh();
        $this->assertEquals($expected, $book->description_html);
    }

    public function test_show_view_displays_description_if_no_description_html_set()
    {
        $book = $this->entities->book();
        $book->description_html = '';
        $book->description = "My great\ndescription\n\nwith newlines";
        $book->save();

        $resp = $this->asEditor()->get($book->getUrl());
        $resp->assertSee("<p>My great<br>\ndescription<br>\n<br>\nwith newlines</p>", false);
    }

    public function test_description_with_only_br_tags_results_in_empty_p_tag_used_on_show()
    {
        $descriptions = [
            '<p><br></p>',
            '<p><br><br><br><br></p>',
            '<p><br><br><br></p><h1><br><br><br><br><br></h1>',
        ];
        $book = $this->entities->book();
        $this->asEditor();

        foreach ($descriptions as $descriptionTestCase) {
            $book->description_html = $descriptionTestCase;
            $book->save();

            $resp = $this->get($book->getUrl());
            $html = $this->withHtml($resp);
            $descriptionHtml = $html->getInnerHtml('.book-content > div.text-muted:first-child');
            $this->assertEquals('<p></p>', $descriptionHtml);
        }
    }
}
