<?php

namespace Tests\Permissions;

use BookStack\Actions\Comment;
use BookStack\Auth\Role;
use BookStack\Auth\User;
use BookStack\Entities\Models\Book;
use BookStack\Entities\Models\Bookshelf;
use BookStack\Entities\Models\Chapter;
use BookStack\Entities\Models\Page;
use BookStack\Uploads\Image;
use Tests\TestCase;
use Tests\TestResponse;

class RolesTest extends TestCase
{
    protected $user;

    public function setUp(): void
    {
        parent::setUp();
        $this->user = $this->getViewer();
    }

    public function test_admin_can_see_settings()
    {
        $this->asAdmin()->get('/settings')->assertSee('Settings');
    }

    public function test_cannot_delete_admin_role()
    {
        $adminRole = Role::getRole('admin');
        $deletePageUrl = '/settings/roles/delete/' . $adminRole->id;

        $this->asAdmin()->get($deletePageUrl);
        $this->delete($deletePageUrl)->assertRedirect($deletePageUrl);
        $this->get($deletePageUrl)->assertSee('cannot be deleted');
    }

    public function test_role_cannot_be_deleted_if_default()
    {
        $newRole = $this->createNewRole();
        $this->setSettings(['registration-role' => $newRole->id]);

        $deletePageUrl = '/settings/roles/delete/' . $newRole->id;
        $this->asAdmin()->get($deletePageUrl);
        $this->delete($deletePageUrl)->assertRedirect($deletePageUrl);
        $this->get($deletePageUrl)->assertSee('cannot be deleted');
    }

    public function test_role_create_update_delete_flow()
    {
        $testRoleName = 'Test Role';
        $testRoleDesc = 'a little test description';
        $testRoleUpdateName = 'An Super Updated role';

        // Creation
        $this->asAdmin()->get('/settings')
            ->click('Roles')
            ->seePageIs('/settings/roles')
            ->click('Create New Role')
            ->type('Test Role', 'display_name')
            ->type('A little test description', 'description')
            ->press('Save Role')
            ->assertDatabaseHas('roles', ['display_name' => $testRoleName, 'description' => $testRoleDesc, 'mfa_enforced' => false])
            ->seePageIs('/settings/roles');

        // Updating
        $this->asAdmin()->get('/settings/roles')
            ->assertSee($testRoleDesc)
            ->click($testRoleName)
            ->type($testRoleUpdateName, '#display_name')
            ->check('#mfa_enforced')
            ->press('Save Role')
            ->assertDatabaseHas('roles', ['display_name' => $testRoleUpdateName, 'description' => $testRoleDesc, 'mfa_enforced' => true])
            ->seePageIs('/settings/roles');

        // Deleting
        $this->asAdmin()->get('/settings/roles')
            ->click($testRoleUpdateName)
            ->click('Delete Role')
            ->assertSee($testRoleUpdateName)
            ->press('Confirm')
            ->seePageIs('/settings/roles')
            ->assertDontSee($testRoleUpdateName);
    }

    public function test_admin_role_cannot_be_removed_if_user_last_admin()
    {
        $adminRole = Role::where('system_name', '=', 'admin')->first();
        $adminUser = $this->getAdmin();
        $adminRole->users()->where('id', '!=', $adminUser->id)->delete();
        $this->assertEquals($adminRole->users()->count(), 1);

        $viewerRole = $this->getViewer()->roles()->first();

        $editUrl = '/settings/users/' . $adminUser->id;
        $this->actingAs($adminUser)->put($editUrl, [
            'name'  => $adminUser->name,
            'email' => $adminUser->email,
            'roles' => [
                'viewer' => strval($viewerRole->id),
            ],
        ])->followRedirects();

        $this->seePageIs($editUrl);
        $this->assertSee('This user is the only user assigned to the administrator role');
    }

    public function test_migrate_users_on_delete_works()
    {
        $roleA = Role::query()->create(['display_name' => 'Delete Test A']);
        $roleB = Role::query()->create(['display_name' => 'Delete Test B']);
        $this->user->attachRole($roleB);

        $this->assertCount(0, $roleA->users()->get());
        $this->assertCount(1, $roleB->users()->get());

        $deletePage = $this->asAdmin()->get("/settings/roles/delete/{$roleB->id}");
        $deletePage->assertElementExists('select[name=migrate_role_id]');
        $this->asAdmin()->delete("/settings/roles/delete/{$roleB->id}", [
            'migrate_role_id' => $roleA->id,
        ]);

        $this->assertCount(1, $roleA->users()->get());
        $this->assertEquals($this->user->id, $roleA->users()->first()->id);
    }

    public function test_manage_user_permission()
    {
        $this->actingAs($this->user)->get('/settings/users')
            ->seePageIs('/');
        $this->giveUserPermissions($this->user, ['users-manage']);
        $this->actingAs($this->user)->get('/settings/users')
            ->seePageIs('/settings/users');
    }

    public function test_manage_users_permission_shows_link_in_header_if_does_not_have_settings_manage_permision()
    {
        $usersLink = 'href="' . url('/settings/users') . '"';
        $this->actingAs($this->user)->get('/')->assertDontSee($usersLink);
        $this->giveUserPermissions($this->user, ['users-manage']);
        $this->actingAs($this->user)->get('/')->assertSee($usersLink);
        $this->giveUserPermissions($this->user, ['settings-manage', 'users-manage']);
        $this->actingAs($this->user)->get('/')->assertDontSee($usersLink);
    }

    public function test_user_cannot_change_email_unless_they_have_manage_users_permission()
    {
        $userProfileUrl = '/settings/users/' . $this->user->id;
        $originalEmail = $this->user->email;
        $this->actingAs($this->user);

        $this->get($userProfileUrl)
            ->assertOk()
            ->assertElementExists('input[name=email][disabled]');
        $this->put($userProfileUrl, [
            'name'  => 'my_new_name',
            'email' => 'new_email@example.com',
        ]);
        $this->assertDatabaseHas('users', [
            'id'    => $this->user->id,
            'email' => $originalEmail,
            'name'  => 'my_new_name',
        ]);

        $this->giveUserPermissions($this->user, ['users-manage']);

        $this->get($userProfileUrl)
            ->assertOk()
            ->assertElementNotExists('input[name=email][disabled]')
            ->assertElementExists('input[name=email]');
        $this->put($userProfileUrl, [
            'name'  => 'my_new_name_2',
            'email' => 'new_email@example.com',
        ]);

        $this->assertDatabaseHas('users', [
            'id'    => $this->user->id,
            'email' => 'new_email@example.com',
            'name'  => 'my_new_name_2',
        ]);
    }

    public function test_user_roles_manage_permission()
    {
        $this->actingAs($this->user)->get('/settings/roles')
            ->seePageIs('/')->get('/settings/roles/1')->seePageIs('/');
        $this->giveUserPermissions($this->user, ['user-roles-manage']);
        $this->actingAs($this->user)->get('/settings/roles')
            ->seePageIs('/settings/roles')->click('Admin')
            ->assertSee('Edit Role');
    }

    public function test_settings_manage_permission()
    {
        $this->actingAs($this->user)->get('/settings')
            ->seePageIs('/');
        $this->giveUserPermissions($this->user, ['settings-manage']);
        $this->actingAs($this->user)->get('/settings')
            ->seePageIs('/settings')->press('Save Settings')->assertSee('Settings Saved');
    }

    public function test_restrictions_manage_all_permission()
    {
        $page = Page::take(1)->get()->first();
        $this->actingAs($this->user)->get($page->getUrl())
            ->assertDontSee('Permissions')
            ->get($page->getUrl() . '/permissions')
            ->seePageIs('/');
        $this->giveUserPermissions($this->user, ['restrictions-manage-all']);
        $this->actingAs($this->user)->get($page->getUrl())
            ->assertSee('Permissions')
            ->click('Permissions')
            ->assertSee('Page Permissions')->seePageIs($page->getUrl() . '/permissions');
    }

    public function test_restrictions_manage_own_permission()
    {
        /** @var Page $otherUsersPage */
        $otherUsersPage = Page::query()->first();
        $content = $this->createEntityChainBelongingToUser($this->user);

        // Set a different creator on the page we're checking to ensure
        // that the owner fields are checked
        $page = $content['page']; /** @var Page $page */
        $page->created_by = $otherUsersPage->id;
        $page->owned_by = $this->user->id;
        $page->save();

        // Check can't restrict other's content
        $this->actingAs($this->user)->get($otherUsersPage->getUrl())
            ->assertDontSee('Permissions')
            ->get($otherUsersPage->getUrl() . '/permissions')
            ->seePageIs('/');
        // Check can't restrict own content
        $this->actingAs($this->user)->get($page->getUrl())
            ->assertDontSee('Permissions')
            ->get($page->getUrl() . '/permissions')
            ->seePageIs('/');

        $this->giveUserPermissions($this->user, ['restrictions-manage-own']);

        // Check can't restrict other's content
        $this->actingAs($this->user)->get($otherUsersPage->getUrl())
            ->assertDontSee('Permissions')
            ->get($otherUsersPage->getUrl() . '/permissions')
            ->seePageIs('/');
        // Check can restrict own content
        $this->actingAs($this->user)->get($page->getUrl())
            ->assertSee('Permissions')
            ->click('Permissions')
            ->seePageIs($page->getUrl() . '/permissions');
    }

    /**
     * Check a standard entity access permission.
     *
     * @param string $permission
     * @param array  $accessUrls Urls that are only accessible after having the permission
     * @param array  $visibles   Check this text, In the buttons toolbar, is only visible with the permission
     */
    private function checkAccessPermission($permission, $accessUrls = [], $visibles = [])
    {
        foreach ($accessUrls as $url) {
            $this->actingAs($this->user)->get($url)
                ->seePageIs('/');
        }
        foreach ($visibles as $url => $text) {
            $this->actingAs($this->user)->get($url)
                ->assertElementNotContains('.action-buttons', $text);
        }

        $this->giveUserPermissions($this->user, [$permission]);

        foreach ($accessUrls as $url) {
            $this->actingAs($this->user)->get($url)
                ->seePageIs($url);
        }
        foreach ($visibles as $url => $text) {
            $this->actingAs($this->user)->get($url)
                ->assertSee($text);
        }
    }

    public function test_bookshelves_create_all_permissions()
    {
        $this->checkAccessPermission('bookshelf-create-all', [
            '/create-shelf',
        ], [
            '/shelves' => 'New Shelf',
        ]);

        $this->get('/create-shelf')
            ->type('test shelf', 'name')
            ->type('shelf desc', 'description')
            ->press('Save Shelf')
            ->seePageIs('/shelves/test-shelf');
    }

    public function test_bookshelves_edit_own_permission()
    {
        /** @var Bookshelf $otherShelf */
        $otherShelf = Bookshelf::query()->first();
        $ownShelf = $this->newShelf(['name' => 'test-shelf', 'slug' => 'test-shelf']);
        $ownShelf->forceFill(['owned_by' => $this->user->id, 'updated_by' => $this->user->id])->save();
        $this->regenEntityPermissions($ownShelf);

        $this->checkAccessPermission('bookshelf-update-own', [
            $ownShelf->getUrl('/edit'),
        ], [
            $ownShelf->getUrl() => 'Edit',
        ]);

        $this->get($otherShelf->getUrl())
            ->assertElementNotContains('.action-buttons', 'Edit')
            ->get($otherShelf->getUrl('/edit'))
            ->seePageIs('/');
    }

    public function test_bookshelves_edit_all_permission()
    {
        /** @var Bookshelf $otherShelf */
        $otherShelf = Bookshelf::query()->first();
        $this->checkAccessPermission('bookshelf-update-all', [
            $otherShelf->getUrl('/edit'),
        ], [
            $otherShelf->getUrl() => 'Edit',
        ]);
    }

    public function test_bookshelves_delete_own_permission()
    {
        $this->giveUserPermissions($this->user, ['bookshelf-update-all']);
        /** @var Bookshelf $otherShelf */
        $otherShelf = Bookshelf::query()->first();
        $ownShelf = $this->newShelf(['name' => 'test-shelf', 'slug' => 'test-shelf']);
        $ownShelf->forceFill(['owned_by' => $this->user->id, 'updated_by' => $this->user->id])->save();
        $this->regenEntityPermissions($ownShelf);

        $this->checkAccessPermission('bookshelf-delete-own', [
            $ownShelf->getUrl('/delete'),
        ], [
            $ownShelf->getUrl() => 'Delete',
        ]);

        $this->get($otherShelf->getUrl())
            ->assertElementNotContains('.action-buttons', 'Delete')
            ->get($otherShelf->getUrl('/delete'))
            ->seePageIs('/');
        $this->get($ownShelf->getUrl())->get($ownShelf->getUrl('/delete'))
            ->press('Confirm')
            ->seePageIs('/shelves')
            ->assertDontSee($ownShelf->name);
    }

    public function test_bookshelves_delete_all_permission()
    {
        $this->giveUserPermissions($this->user, ['bookshelf-update-all']);
        /** @var Bookshelf $otherShelf */
        $otherShelf = Bookshelf::query()->first();
        $this->checkAccessPermission('bookshelf-delete-all', [
            $otherShelf->getUrl('/delete'),
        ], [
            $otherShelf->getUrl() => 'Delete',
        ]);

        $this->get($otherShelf->getUrl())->get($otherShelf->getUrl('/delete'))
            ->press('Confirm')
            ->seePageIs('/shelves')
            ->assertDontSee($otherShelf->name);
    }

    public function test_books_create_all_permissions()
    {
        $this->checkAccessPermission('book-create-all', [
            '/create-book',
        ], [
            '/books' => 'Create New Book',
        ]);

        $this->get('/create-book')
            ->type('test book', 'name')
            ->type('book desc', 'description')
            ->press('Save Book')
            ->seePageIs('/books/test-book');
    }

    public function test_books_edit_own_permission()
    {
        /** @var Book $otherBook */
        $otherBook = Book::query()->take(1)->get()->first();
        $ownBook = $this->createEntityChainBelongingToUser($this->user)['book'];
        $this->checkAccessPermission('book-update-own', [
            $ownBook->getUrl() . '/edit',
        ], [
            $ownBook->getUrl() => 'Edit',
        ]);

        $this->get($otherBook->getUrl())
            ->assertElementNotContains('.action-buttons', 'Edit')
            ->get($otherBook->getUrl() . '/edit')
            ->seePageIs('/');
    }

    public function test_books_edit_all_permission()
    {
        /** @var Book $otherBook */
        $otherBook = Book::query()->take(1)->get()->first();
        $this->checkAccessPermission('book-update-all', [
            $otherBook->getUrl() . '/edit',
        ], [
            $otherBook->getUrl() => 'Edit',
        ]);
    }

    public function test_books_delete_own_permission()
    {
        $this->giveUserPermissions($this->user, ['book-update-all']);
        /** @var Book $otherBook */
        $otherBook = Book::query()->take(1)->get()->first();
        $ownBook = $this->createEntityChainBelongingToUser($this->user)['book'];
        $this->checkAccessPermission('book-delete-own', [
            $ownBook->getUrl() . '/delete',
        ], [
            $ownBook->getUrl() => 'Delete',
        ]);

        $this->get($otherBook->getUrl())
            ->assertElementNotContains('.action-buttons', 'Delete')
            ->get($otherBook->getUrl() . '/delete')
            ->seePageIs('/');
        $this->get($ownBook->getUrl())->get($ownBook->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs('/books')
            ->assertDontSee($ownBook->name);
    }

    public function test_books_delete_all_permission()
    {
        $this->giveUserPermissions($this->user, ['book-update-all']);
        /** @var Book $otherBook */
        $otherBook = Book::query()->take(1)->get()->first();
        $this->checkAccessPermission('book-delete-all', [
            $otherBook->getUrl() . '/delete',
        ], [
            $otherBook->getUrl() => 'Delete',
        ]);

        $this->get($otherBook->getUrl())->get($otherBook->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs('/books')
            ->assertDontSee($otherBook->name);
    }

    public function test_chapter_create_own_permissions()
    {
        /** @var Book $book */
        $book = Book::query()->take(1)->get()->first();
        $ownBook = $this->createEntityChainBelongingToUser($this->user)['book'];
        $this->checkAccessPermission('chapter-create-own', [
            $ownBook->getUrl('/create-chapter'),
        ], [
            $ownBook->getUrl() => 'New Chapter',
        ]);

        $this->get($ownBook->getUrl('/create-chapter'))
            ->type('test chapter', 'name')
            ->type('chapter desc', 'description')
            ->press('Save Chapter')
            ->seePageIs($ownBook->getUrl('/chapter/test-chapter'));

        $this->get($book->getUrl())
            ->assertElementNotContains('.action-buttons', 'New Chapter')
            ->get($book->getUrl('/create-chapter'))
            ->seePageIs('/');
    }

    public function test_chapter_create_all_permissions()
    {
        $book = Book::take(1)->get()->first();
        $this->checkAccessPermission('chapter-create-all', [
            $book->getUrl('/create-chapter'),
        ], [
            $book->getUrl() => 'New Chapter',
        ]);

        $this->get($book->getUrl('/create-chapter'))
            ->type('test chapter', 'name')
            ->type('chapter desc', 'description')
            ->press('Save Chapter')
            ->seePageIs($book->getUrl('/chapter/test-chapter'));
    }

    public function test_chapter_edit_own_permission()
    {
        $otherChapter = Chapter::take(1)->get()->first();
        $ownChapter = $this->createEntityChainBelongingToUser($this->user)['chapter'];
        $this->checkAccessPermission('chapter-update-own', [
            $ownChapter->getUrl() . '/edit',
        ], [
            $ownChapter->getUrl() => 'Edit',
        ]);

        $this->get($otherChapter->getUrl())
            ->assertElementNotContains('.action-buttons', 'Edit')
            ->get($otherChapter->getUrl() . '/edit')
            ->seePageIs('/');
    }

    public function test_chapter_edit_all_permission()
    {
        /** @var Chapter $otherChapter */
        $otherChapter = Chapter::query()->take(1)->get()->first();
        $this->checkAccessPermission('chapter-update-all', [
            $otherChapter->getUrl() . '/edit',
        ], [
            $otherChapter->getUrl() => 'Edit',
        ]);
    }

    public function test_chapter_delete_own_permission()
    {
        $this->giveUserPermissions($this->user, ['chapter-update-all']);
        /** @var Chapter $otherChapter */
        $otherChapter = Chapter::query()->take(1)->get()->first();
        $ownChapter = $this->createEntityChainBelongingToUser($this->user)['chapter'];
        $this->checkAccessPermission('chapter-delete-own', [
            $ownChapter->getUrl() . '/delete',
        ], [
            $ownChapter->getUrl() => 'Delete',
        ]);

        $bookUrl = $ownChapter->book->getUrl();
        $this->get($otherChapter->getUrl())
            ->assertElementNotContains('.action-buttons', 'Delete')
            ->get($otherChapter->getUrl() . '/delete')
            ->seePageIs('/');
        $this->get($ownChapter->getUrl())->get($ownChapter->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs($bookUrl)
            ->assertElementNotContains('.book-content', $ownChapter->name);
    }

    public function test_chapter_delete_all_permission()
    {
        $this->giveUserPermissions($this->user, ['chapter-update-all']);
        $otherChapter = Chapter::take(1)->get()->first();
        $this->checkAccessPermission('chapter-delete-all', [
            $otherChapter->getUrl() . '/delete',
        ], [
            $otherChapter->getUrl() => 'Delete',
        ]);

        $bookUrl = $otherChapter->book->getUrl();
        $this->get($otherChapter->getUrl())->get($otherChapter->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs($bookUrl)
            ->assertElementNotContains('.book-content', $otherChapter->name);
    }

    public function test_page_create_own_permissions()
    {
        /** @var Book $book */
        $book = Book::query()->first();
        /** @var Chapter $chapter */
        $chapter = Chapter::query()->first();

        $entities = $this->createEntityChainBelongingToUser($this->user);
        $ownBook = $entities['book'];
        $ownChapter = $entities['chapter'];

        $createUrl = $ownBook->getUrl('/create-page');
        $createUrlChapter = $ownChapter->getUrl('/create-page');
        $accessUrls = [$createUrl, $createUrlChapter];

        foreach ($accessUrls as $url) {
            $this->actingAs($this->user)->get($url)
                ->seePageIs('/');
        }

        $this->checkAccessPermission('page-create-own', [], [
            $ownBook->getUrl()    => 'New Page',
            $ownChapter->getUrl() => 'New Page',
        ]);

        $this->giveUserPermissions($this->user, ['page-create-own']);

        foreach ($accessUrls as $index => $url) {
            $this->actingAs($this->user)->get($url);
            $expectedUrl = Page::where('draft', '=', true)->orderBy('id', 'desc')->first()->getUrl();
            $this->seePageIs($expectedUrl);
        }

        $this->get($createUrl)
            ->type('test page', 'name')
            ->type('page desc', 'html')
            ->press('Save Page')
            ->seePageIs($ownBook->getUrl('/page/test-page'));

        $this->get($book->getUrl())
            ->assertElementNotContains('.action-buttons', 'New Page')
            ->get($book->getUrl() . '/create-page')
            ->seePageIs('/');
        $this->get($chapter->getUrl())
            ->assertElementNotContains('.action-buttons', 'New Page')
            ->get($chapter->getUrl() . '/create-page')
            ->seePageIs('/');
    }

    public function test_page_create_all_permissions()
    {
        $book = Book::take(1)->get()->first();
        $chapter = Chapter::take(1)->get()->first();
        $createUrl = $book->getUrl('/create-page');

        $createUrlChapter = $chapter->getUrl('/create-page');
        $accessUrls = [$createUrl, $createUrlChapter];

        foreach ($accessUrls as $url) {
            $this->actingAs($this->user)->get($url)
                ->seePageIs('/');
        }

        $this->checkAccessPermission('page-create-all', [], [
            $book->getUrl()    => 'New Page',
            $chapter->getUrl() => 'New Page',
        ]);

        $this->giveUserPermissions($this->user, ['page-create-all']);

        foreach ($accessUrls as $index => $url) {
            $this->actingAs($this->user)->get($url);
            $expectedUrl = Page::where('draft', '=', true)->orderBy('id', 'desc')->first()->getUrl();
            $this->seePageIs($expectedUrl);
        }

        $this->get($createUrl)
            ->type('test page', 'name')
            ->type('page desc', 'html')
            ->press('Save Page')
            ->seePageIs($book->getUrl('/page/test-page'));

        $this->get($chapter->getUrl('/create-page'))
            ->type('new test page', 'name')
            ->type('page desc', 'html')
            ->press('Save Page')
            ->seePageIs($book->getUrl('/page/new-test-page'));
    }

    public function test_page_edit_own_permission()
    {
        $otherPage = Page::take(1)->get()->first();
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->checkAccessPermission('page-update-own', [
            $ownPage->getUrl() . '/edit',
        ], [
            $ownPage->getUrl() => 'Edit',
        ]);

        $this->get($otherPage->getUrl())
            ->assertElementNotContains('.action-buttons', 'Edit')
            ->get($otherPage->getUrl() . '/edit')
            ->seePageIs('/');
    }

    public function test_page_edit_all_permission()
    {
        $otherPage = Page::take(1)->get()->first();
        $this->checkAccessPermission('page-update-all', [
            $otherPage->getUrl() . '/edit',
        ], [
            $otherPage->getUrl() => 'Edit',
        ]);
    }

    public function test_page_delete_own_permission()
    {
        $this->giveUserPermissions($this->user, ['page-update-all']);
        $otherPage = Page::take(1)->get()->first();
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->checkAccessPermission('page-delete-own', [
            $ownPage->getUrl() . '/delete',
        ], [
            $ownPage->getUrl() => 'Delete',
        ]);

        $parent = $ownPage->chapter ?? $ownPage->book;
        $this->get($otherPage->getUrl())
            ->assertElementNotContains('.action-buttons', 'Delete')
            ->get($otherPage->getUrl() . '/delete')
            ->seePageIs('/');
        $this->get($ownPage->getUrl())->get($ownPage->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs($parent->getUrl())
            ->assertElementNotContains('.book-content', $ownPage->name);
    }

    public function test_page_delete_all_permission()
    {
        $this->giveUserPermissions($this->user, ['page-update-all']);
        $otherPage = Page::take(1)->get()->first();
        $this->checkAccessPermission('page-delete-all', [
            $otherPage->getUrl() . '/delete',
        ], [
            $otherPage->getUrl() => 'Delete',
        ]);

        $parent = $otherPage->chapter ?? $otherPage->book;
        $this->get($otherPage->getUrl())->get($otherPage->getUrl() . '/delete')
            ->press('Confirm')
            ->seePageIs($parent->getUrl())
            ->assertElementNotContains('.book-content', $otherPage->name);
    }

    public function test_public_role_visible_in_user_edit_screen()
    {
        $user = User::first();
        $adminRole = Role::getSystemRole('admin');
        $publicRole = Role::getSystemRole('public');
        $this->asAdmin()->get('/settings/users/' . $user->id)
            ->assertElementExists('[name="roles[' . $adminRole->id . ']"]')
            ->assertElementExists('[name="roles[' . $publicRole->id . ']"]');
    }

    public function test_public_role_visible_in_role_listing()
    {
        $this->asAdmin()->get('/settings/roles')
            ->assertSee('Admin')
            ->assertSee('Public');
    }

    public function test_public_role_visible_in_default_role_setting()
    {
        $this->asAdmin()->get('/settings')
            ->assertElementExists('[data-system-role-name="admin"]')
            ->assertElementExists('[data-system-role-name="public"]');
    }

    public function test_public_role_not_deleteable()
    {
        $this->asAdmin()->get('/settings/roles')
            ->click('Public')
            ->assertSee('Edit Role')
            ->click('Delete Role')
            ->press('Confirm')
            ->assertSee('Delete Role')
            ->assertSee('Cannot be deleted');
    }

    public function test_image_delete_own_permission()
    {
        $this->giveUserPermissions($this->user, ['image-update-all']);
        $page = Page::first();
        $image = factory(Image::class)->create(['uploaded_to' => $page->id, 'created_by' => $this->user->id, 'updated_by' => $this->user->id]);

        $this->actingAs($this->user)->json('delete', '/images/' . $image->id)
            ->assertStatus(403);

        $this->giveUserPermissions($this->user, ['image-delete-own']);

        $this->actingAs($this->user)->json('delete', '/images/' . $image->id)
            ->assertOk()
            ->assertDatabaseMissing('images', ['id' => $image->id]);
    }

    public function test_image_delete_all_permission()
    {
        $this->giveUserPermissions($this->user, ['image-update-all']);
        $admin = $this->getAdmin();
        $page = Page::first();
        $image = factory(Image::class)->create(['uploaded_to' => $page->id, 'created_by' => $admin->id, 'updated_by' => $admin->id]);

        $this->actingAs($this->user)->json('delete', '/images/' . $image->id)
            ->assertStatus(403);

        $this->giveUserPermissions($this->user, ['image-delete-own']);

        $this->actingAs($this->user)->json('delete', '/images/' . $image->id)
            ->assertStatus(403);

        $this->giveUserPermissions($this->user, ['image-delete-all']);

        $this->actingAs($this->user)->json('delete', '/images/' . $image->id)
            ->assertOk()
            ->assertDatabaseMissing('images', ['id' => $image->id]);
    }

    public function test_role_permission_removal()
    {
        // To cover issue fixed in f99c8ff99aee9beb8c692f36d4b84dc6e651e50a.
        /** @var Page $page */
        $page = Page::query()->first();
        $viewerRole = Role::getRole('viewer');
        $viewer = $this->getViewer();
        $this->actingAs($viewer)->get($page->getUrl())->assertOk();

        $this->asAdmin()->put('/settings/roles/' . $viewerRole->id, [
            'display_name' => $viewerRole->display_name,
            'description'  => $viewerRole->description,
            'permission'   => [],
        ])->assertStatus(302);

        $this->actingAs($viewer)->get($page->getUrl())->assertStatus(404);
    }

    public function test_empty_state_actions_not_visible_without_permission()
    {
        $admin = $this->getAdmin();
        // Book links
        $book = factory(Book::class)->create(['created_by' => $admin->id, 'updated_by' => $admin->id]);
        $this->regenEntityPermissions($book);
        $this->actingAs($this->getViewer())->get($book->getUrl())
            ->assertDontSee('Create a new page')
            ->assertDontSee('Add a chapter');

        // Chapter links
        $chapter = factory(Chapter::class)->create(['created_by' => $admin->id, 'updated_by' => $admin->id, 'book_id' => $book->id]);
        $this->regenEntityPermissions($chapter);
        $this->actingAs($this->getViewer())->get($chapter->getUrl())
            ->assertDontSee('Create a new page')
            ->assertDontSee('Sort the current book');
    }

    public function test_comment_create_permission()
    {
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];

        $this->actingAs($this->user)
            ->addComment($ownPage)
            ->assertStatus(403);

        $this->giveUserPermissions($this->user, ['comment-create-all']);

        $this->actingAs($this->user)
            ->addComment($ownPage)
            ->assertOk();
    }

    public function test_comment_update_own_permission()
    {
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->giveUserPermissions($this->user, ['comment-create-all']);
        $this->actingAs($this->user)->addComment($ownPage);
        /** @var Comment $comment */
        $comment = $ownPage->comments()->latest()->first();

        // no comment-update-own
        $this->actingAs($this->user)->updateComment($comment)->assertStatus(403);

        $this->giveUserPermissions($this->user, ['comment-update-own']);

        // now has comment-update-own
        $this->actingAs($this->user)->updateComment($comment)->assertOk();
    }

    public function test_comment_update_all_permission()
    {
        /** @var Page $ownPage */
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->asAdmin()->addComment($ownPage);
        /** @var Comment $comment */
        $comment = $ownPage->comments()->latest()->first();

        // no comment-update-all
        $this->actingAs($this->user)->updateComment($comment)->assertStatus(403);

        $this->giveUserPermissions($this->user, ['comment-update-all']);

        // now has comment-update-all
        $this->actingAs($this->user)->updateComment($comment)->assertOk();
    }

    public function test_comment_delete_own_permission()
    {
        /** @var Page $ownPage */
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->giveUserPermissions($this->user, ['comment-create-all']);
        $this->actingAs($this->user)->addComment($ownPage);

        /** @var Comment $comment */
        $comment = $ownPage->comments()->latest()->first();

        // no comment-delete-own
        $this->actingAs($this->user)->deleteComment($comment)->assertStatus(403);

        $this->giveUserPermissions($this->user, ['comment-delete-own']);

        // now has comment-update-own
        $this->actingAs($this->user)->deleteComment($comment)->assertOk();
    }

    public function test_comment_delete_all_permission()
    {
        /** @var Page $ownPage */
        $ownPage = $this->createEntityChainBelongingToUser($this->user)['page'];
        $this->asAdmin()->addComment($ownPage);
        /** @var Comment $comment */
        $comment = $ownPage->comments()->latest()->first();

        // no comment-delete-all
        $this->actingAs($this->user)->deleteComment($comment)->assertStatus(403);

        $this->giveUserPermissions($this->user, ['comment-delete-all']);

        // now has comment-delete-all
        $this->actingAs($this->user)->deleteComment($comment)->assertOk();
    }

    private function addComment(Page $page): TestResponse
    {
        $comment = factory(Comment::class)->make();
        return $this->postJson("/comment/$page->id", $comment->only('text', 'html'));
    }

    private function updateComment(Comment $comment): TestResponse
    {
        $commentData = factory(Comment::class)->make();
        return $this->putJson("/comment/{$comment->id}", $commentData->only('text', 'html'));
    }

    private function deleteComment(Comment $comment): TestResponse
    {
        return $this->json('DELETE', '/comment/' . $comment->id);
    }
}