<?php

namespace SilverStripe\CMS\Tests\Controllers;

use Page;
use Psr\SimpleCache\CacheInterface;
use SilverStripe\Admin\CMSBatchActionHandler;
use SilverStripe\CMS\Controllers\CMSMain;
use SilverStripe\CMS\Model\RedirectorPage;
use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\Control\Controller;
use SilverStripe\Control\HTTPRequest;
use SilverStripe\Control\HTTPResponse_Exception;
use SilverStripe\Core\ClassInfo;
use SilverStripe\Core\Config\Config;
use SilverStripe\Core\Convert;
use SilverStripe\Core\Injector\Injector;
use SilverStripe\Dev\CSSContentParser;
use SilverStripe\Dev\FunctionalTest;
use SilverStripe\Dev\TestOnly;
use SilverStripe\Forms\FieldList;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\DB;
use SilverStripe\Security\Member;
use SilverStripe\Security\Security;
use SilverStripe\SiteConfig\SiteConfig;
use SilverStripe\Versioned\Versioned;

class CMSMainTest extends FunctionalTest
{
    protected static $fixture_file = 'CMSMainTest.yml';

    protected static $orig = [];

    public function setUp()
    {
        parent::setUp();

        // Clear automatically created siteconfigs (in case one was created outside of the specified fixtures).
        $ids = $this->allFixtureIDs(SiteConfig::class);
        if ($ids) {
            foreach (SiteConfig::get()->exclude('ID', $ids) as $config) {
                $config->delete();
            }
        }
    }

    public function testSiteTreeHints()
    {
        $cache = Injector::inst()->get(CacheInterface::class . '.CMSMain_SiteTreeHints');
        // Login as user with root creation privileges
        $user = $this->objFromFixture(Member::class, 'rootedituser');
        Security::setCurrentUser($user);
        $cache->clear();

        $rawHints = singleton(CMSMain::class)->SiteTreeHints();
        $this->assertNotNull($rawHints);

        $rawHints = preg_replace('/^"(.*)"$/', '$1', Convert::xml2raw($rawHints));
        $hints = json_decode($rawHints, true);

        $this->assertArrayHasKey('Root', $hints);
        $this->assertArrayHasKey('Page', $hints);
        $this->assertArrayHasKey('All', $hints);

        $this->assertArrayHasKey(
            CMSMainTest_ClassA::class,
            $hints['All'],
            'Global list shows allowed classes'
        );

        $this->assertArrayNotHasKey(
            CMSMainTest_HiddenClass::class,
            $hints['All'],
            'Global list does not list hidden classes'
        );

        $this->assertNotContains(
            CMSMainTest_ClassA::class,
            $hints['Root']['disallowedChildren'],
            'Limits root classes'
        );

        $this->assertContains(
            CMSMainTest_NotRoot::class,
            $hints['Root']['disallowedChildren'],
            'Limits root classes'
        );
    }

    public function testChildFilter()
    {
        $this->logInWithPermission('ADMIN');

        // Check page A
        $pageA = new CMSMainTest_ClassA();
        $pageA->write();
        $pageB = new CMSMainTest_ClassB();
        $pageB->write();

        // Check query
        $response = $this->get('admin/pages/childfilter?ParentID=' . $pageA->ID);
        $children = json_decode($response->getBody());
        $this->assertFalse($response->isError());

        // Page A can't have unrelated children
        $this->assertContains(
            'Page',
            $children,
            'Limited parent lists disallowed classes'
        );

        // But it can create a ClassB
        $this->assertNotContains(
            CMSMainTest_ClassB::class,
            $children,
            'Limited parent omits explicitly allowed classes in disallowedChildren'
        );
    }

    /**
     * @todo Test the results of a publication better
     */
    public function testPublish()
    {
        $page1 = $this->objFromFixture(Page::class, "page1");
        $page2 = $this->objFromFixture(Page::class, "page2");
        $this->logInAs('admin');

        $response = $this->get('admin/pages/publishall?confirm=1');
        $this->assertContains(
            'Done: Published 30 pages',
            $response->getBody()
        );

        // Some modules (e.g., cmsworkflow) will remove this action
        $actions = CMSBatchActionHandler::config()->batch_actions;
        if (isset($actions['publish'])) {
            $response = $this->get('admin/pages/batchactions/publish?ajax=1&csvIDs=' . implode(',', [$page1->ID, $page2->ID]));
            $responseData = json_decode($response->getBody(), true);
            $this->assertArrayHasKey($page1->ID, $responseData['modified']);
            $this->assertArrayHasKey($page2->ID, $responseData['modified']);
        }

        // Get the latest version of the redirector page
        $pageID = $this->idFromFixture(RedirectorPage::class, 'page5');
        $latestID = DB::prepared_query('select max("Version") from "RedirectorPage_Versions" where "RecordID" = ?', [$pageID])->value();
        $dsCount = DB::prepared_query('select count("Version") from "RedirectorPage_Versions" where "RecordID" = ? and "Version"= ?', [$pageID, $latestID])->value();
        $this->assertEquals(1, $dsCount, "Published page has no duplicate version records: it has " . $dsCount . " for version " . $latestID);
    }

    /**
     * Test that getCMSFields works on each page type.
     * Mostly, this is just checking that the method doesn't return an error
     */
    public function testThatGetCMSFieldsWorksOnEveryPageType()
    {
        $classes = ClassInfo::subclassesFor(SiteTree::class);
        array_shift($classes);

        foreach ($classes as $class) {
            $page = new $class();
            if ($page instanceof TestOnly) {
                continue;
            }
            if (!$page->config()->get('can_be_root')) {
                continue;
            }

            $page->Title = "Test $class page";
            $page->write();
            $page->flushCache();
            $page = DataObject::get_by_id(SiteTree::class, $page->ID);

            $this->assertTrue($page->getCMSFields() instanceof FieldList);
        }
    }

    public function testCanPublishPageWithUnpublishedParentWithStrictHierarchyOff()
    {
        $this->logInWithPermission('ADMIN');

        Config::modify()->set(SiteTree::class, 'enforce_strict_hierarchy', true);
        $parentPage = $this->objFromFixture(Page::class, 'page3');
        $childPage = $this->objFromFixture(Page::class, 'page1');

        $parentPage->doUnpublish();
        $childPage->doUnpublish();

        $actions = $childPage->getCMSActions()->dataFields();
        $this->assertArrayHasKey(
            'action_publish',
            $actions,
            'Can publish a page with an unpublished parent with strict hierarchy off'
        );
        Config::modify()->set(SiteTree::class, 'enforce_strict_hierarchy', false);
    }

    /**
     * Test that a draft-deleted page can still be opened in the CMS
     */
    public function testDraftDeletedPageCanBeOpenedInCMS()
    {
        $this->logInWithPermission('ADMIN');

        // Set up a page that is delete from live
        $page = $this->objFromFixture(Page::class, 'page1');
        $pageID = $page->ID;
        $page->publishRecursive();
        $page->delete();

        $response = $this->get('admin/pages/edit/show/' . $pageID);

        $livePage = Versioned::get_one_by_stage(SiteTree::class, Versioned::LIVE, [
                '"SiteTree"."ID"' => $pageID
        ]);
        $this->assertInstanceOf(SiteTree::class, $livePage);
        $this->assertTrue($livePage->canDelete());

        // Check that the 'restore' button exists as a simple way of checking that the correct page is returned.
        $this->assertRegExp('/<button type="submit"[^>]+name="action_(restore|revert)"/i', $response->getBody());
    }

    /**
     * Test CMSMain::getRecord()
     */
    public function testGetRecord()
    {
        $this->logInWithPermission('ADMIN');

        // Set up a page that is delete from live
        $page1 = $this->objFromFixture(Page::class, 'page1');
        $page1ID = $page1->ID;
        $page1->publishRecursive();
        $page1->delete();

        $cmsMain = CMSMain::create();
        $cmsMain->setRequest(Controller::curr()->getRequest());

        // Bad calls
        $this->assertNull($cmsMain->getRecord('0'));
        $this->assertNull($cmsMain->getRecord('asdf'));

        // Pages that are on draft and aren't on draft should both work
        $this->assertInstanceOf('Page', $cmsMain->getRecord($page1ID));
        $this->assertInstanceOf('Page', $cmsMain->getRecord($this->idFromFixture('Page', 'page2')));

        // This functionality isn't actually used any more.
        $newPage = $cmsMain->getRecord('new-Page-5');
        $this->assertInstanceOf('Page', $newPage);
        $this->assertEquals('5', $newPage->ParentID);
    }

    public function testDeletedPagesSiteTreeFilter()
    {
        $id = $this->idFromFixture('Page', 'page3');
        $this->logInWithPermission('ADMIN');
        $result = $this->get('admin/pages/getsubtree?filter=CMSSiteTreeFilter_DeletedPages&ajax=1&ID=' . $id);
        $this->assertEquals(200, $result->getStatusCode());
    }

    public function testCreationOfTopLevelPage()
    {
        $origFollow = $this->autoFollowRedirection;
        $this->autoFollowRedirection = false;

        $cmsUser = $this->objFromFixture(Member::class, 'allcmssectionsuser');
        $rootEditUser = $this->objFromFixture(Member::class, 'rootedituser');

        // with insufficient permissions
        Security::setCurrentUser($cmsUser);
        $this->get('admin/pages/add');
        $response = $this->post(
            'admin/pages/add/AddForm',
            [
                'ParentID' => '0',
                'PageType' => 'Page',
                'Locale' => 'en_US',
                'action_doAdd' => 1,
                'ajax' => 1,
            ],
            [
                'X-Pjax' => 'CurrentForm,Breadcrumbs',
            ]
        );
        // should redirect, which is a permission error
        $this->assertEquals(403, $response->getStatusCode(), 'Add TopLevel page must fail for normal user');

        // with correct permissions
        $this->logInAs($rootEditUser);
        $response = $this->get('admin/pages/add');

        $response = $this->post(
            'admin/pages/add/AddForm',
            [
                'ParentID' => '0',
                'PageType' => 'Page',
                'Locale' => 'en_US',
                'action_doAdd' => 1,
                'ajax' => 1,
            ],
            [
                'X-Pjax' => 'CurrentForm,Breadcrumbs',
            ]
        );

        $location = $response->getHeader('X-ControllerURL');
        $this->assertNotEmpty($location, 'Must be a redirect on success');
        $this->assertContains('/show/', $location, 'Must redirect to /show/ the new page');
        $this->logOut();

        $this->autoFollowRedirection = $origFollow;
    }

    public function testCreationOfRestrictedPage()
    {
        $origFollow = $this->autoFollowRedirection;
        $this->autoFollowRedirection = false;

        $this->logInAs('admin');

        // Create toplevel page
        $this->get('admin/pages/add');
        $response = $this->post(
            'admin/pages/add/AddForm',
            [
                'ParentID' => '0',
                'PageType' => CMSMainTest_ClassA::class,
                'Locale' => 'en_US',
                'action_doAdd' => 1,
                'ajax' => 1
            ],
            [
                'X-Pjax' => 'CurrentForm,Breadcrumbs',
            ]
        );
        $this->assertFalse($response->isError());
        $ok = preg_match('/edit\/show\/(\d*)/', $response->getHeader('X-ControllerURL'), $matches);
        $this->assertNotEmpty($ok);
        $newPageId = $matches[1];

        // Create allowed child
        $this->get('admin/pages/add');
        $response = $this->post(
            'admin/pages/add/AddForm',
            [
                'ParentID' => $newPageId,
                'PageType' => CMSMainTest_ClassB::class,
                'Locale' => 'en_US',
                'action_doAdd' => 1,
                'ajax' => 1
            ],
            [
                'X-Pjax' => 'CurrentForm,Breadcrumbs',
            ]
        );
        $this->assertFalse($response->isError());
        $this->assertEmpty($response->getBody());

        // Verify that the page was created and redirected to accurately
        $newerPage = SiteTree::get()->byID($newPageId)->AllChildren()->first();
        $this->assertNotEmpty($newerPage);
        $ok = preg_match('/edit\/show\/(\d*)/', $response->getHeader('X-ControllerURL'), $matches);
        $this->assertNotEmpty($ok);
        $newerPageID = $matches[1];
        $this->assertEquals($newerPage->ID, $newerPageID);

        // Create disallowed child
        $this->get('admin/pages/add');
        $response = $this->post(
            'admin/pages/add/AddForm',
            [
                'ParentID' => $newPageId,
                'PageType' => 'Page',
                'Locale' => 'en_US',
                'action_doAdd' => 1,
                'ajax' => 1
            ],
            [
                'X-Pjax' => 'CurrentForm,Breadcrumbs',
            ]
        );
        $this->assertEquals(403, $response->getStatusCode(), 'Add disallowed child should fail');

        Security::setCurrentUser(null);

        $this->autoFollowRedirection = $origFollow;
    }

    public function testBreadcrumbs()
    {
        $page3 = $this->objFromFixture(Page::class, 'page3');
        $page31 = $this->objFromFixture(Page::class, 'page31');
        $this->logInAs('admin');

        $response = $this->get('admin/pages/edit/show/' . $page31->ID);
        $parser = new CSSContentParser($response->getBody());
        $crumbs = $parser->getBySelector('.breadcrumbs-wrapper .crumb');

        $this->assertNotNull($crumbs);
        $this->assertEquals(2, count($crumbs));
        $this->assertEquals('Page 3', (string)$crumbs[0]);
        $this->assertEquals('Page 3.1', (string)$crumbs[1]);

        Security::setCurrentUser(null);
    }

    public function testGetNewItem()
    {
        $controller = CMSMain::create();
        $controller->setRequest(Controller::curr()->getRequest());
        $id = 'new-Page-0';

        // Test success
        $page = $controller->getNewItem($id, false);

        $this->assertEquals($page->Title, 'New Page');
        $this->assertNotEquals($page->Sort, 0);
        $this->assertInstanceOf('Page', $page);

        // Test failure
        try {
            $id = 'new-Member-0';
            $member = $controller->getNewItem($id, false);
            $this->fail('Should not be able to create a Member object');
        } catch (HTTPResponse_Exception $e) {
            $this->assertEquals($controller->getResponse()->getStatusCode(), 302);
        }
    }

    /**
     * Tests filtering in {@see CMSMain::getList()}
     */
    public function testGetList()
    {
        $controller = CMSMain::create();
        $controller->setRequest(Controller::curr()->getRequest());

        // Test all pages (stage)
        $pages = $controller->getList()->sort('Title');
        $this->assertEquals(28, $pages->count());
        $this->assertEquals(
            ['Home', 'Page 1', 'Page 10', 'Page 11', 'Page 12'],
            $pages->Limit(5)->column('Title')
        );

        // Change state of tree
        $page1 = $this->objFromFixture(Page::class, 'page1');
        $page3 = $this->objFromFixture(Page::class, 'page3');
        $page11 = $this->objFromFixture(Page::class, 'page11');
        $page12 = $this->objFromFixture(Page::class, 'page12');
        // Deleted
        $page1->doUnpublish();
        $page1->delete();
        // Live and draft
        $page11->copyVersionToStage(Versioned::DRAFT, Versioned::LIVE);
        // Live only
        $page12->copyVersionToStage(Versioned::DRAFT, Versioned::LIVE);
        $page12->delete();

        // Re-test all pages (stage)
        $pages = $controller->getList()->sort('Title');
        $this->assertEquals(26, $pages->count());
        $this->assertEquals(
            ['Home', 'Page 10', 'Page 11', 'Page 13', 'Page 14'],
            $pages->Limit(5)->column('Title')
        );

        // Test deleted page filter
        $params = [
                'FilterClass' => 'SilverStripe\\CMS\\Controllers\\CMSSiteTreeFilter_StatusDeletedPages'
        ];
        $pages = $controller->getList($params);
        $this->assertEquals(1, $pages->count());
        $this->assertEquals(
            ['Page 1'],
            $pages->column('Title')
        );

        // Test live, but not on draft filter
        $params = [
            'FilterClass' => 'SilverStripe\\CMS\\Controllers\\CMSSiteTreeFilter_StatusRemovedFromDraftPages'
        ];
        $pages = $controller->getList($params);
        $this->assertEquals(1, $pages->count());
        $this->assertEquals(
            ['Page 12'],
            $pages->column('Title')
        );

        // Test live pages filter
        $params = [
            'FilterClass' => 'SilverStripe\\CMS\\Controllers\\CMSSiteTreeFilter_PublishedPages'
        ];
        $pages = $controller->getList($params);
        $this->assertEquals(2, $pages->count());
        $this->assertEquals(
            ['Page 11', 'Page 12'],
            $pages->column('Title')
        );

        // Test that parentID is ignored when filtering
        $pages = $controller->getList($params, $page3->ID);
        $this->assertEquals(2, $pages->count());
        $this->assertEquals(
            ['Page 11', 'Page 12'],
            $pages->column('Title')
        );

        // Test that parentID is respected when not filtering
        $pages = $controller->getList([], $page3->ID);
        $this->assertEquals(2, $pages->count());
        $this->assertEquals(
            ['Page 3.1', 'Page 3.2'],
            $pages->column('Title')
        );
    }

    /**
     * Testing retrieval and type of CMS edit form.
     */
    public function testGetEditForm()
    {
        // Login is required prior to accessing a CMS form.
        $this->loginWithPermission('ADMIN');

        // Get a associated with a fixture page.
        $page = $this->objFromFixture(Page::class, 'page1');
        $controller = CMSMain::create();
        $controller->setRequest(Controller::curr()->getRequest());
        $form = $controller->getEditForm($page->ID);
        $this->assertInstanceOf("SilverStripe\\Forms\\Form", $form);

        // Ensure that the form will not "validate" on delete or "unpublish" actions.
        $exemptActions = $form->getValidationExemptActions();
        $this->assertContains("delete", $exemptActions);
        $this->assertContains("unpublish", $exemptActions);
    }

    /**
     * Test that changed classes save with the correct class name
     */
    public function testChangeClass()
    {
        $this->logInWithPermission('ADMIN');
        $cms = CMSMain::create();
        $cms->setRequest(Controller::curr()->getRequest());
        $page = new CMSMainTest_ClassA();
        $page->Title = 'Class A';
        $page->write();

        $form = $cms->getEditForm($page->ID);
        $form->loadDataFrom(['ClassName' => CMSMainTest_ClassB::class]);
        $result = $cms->save([
            'ID' => $page->ID,
            'ClassName' => CMSMainTest_ClassB::class
        ], $form);
        $this->assertEquals(200, $result->getStatusCode());

        $newPage = SiteTree::get()->byID($page->ID);

        $this->assertInstanceOf(CMSMainTest_ClassB::class, $newPage);
        $this->assertEquals(CMSMainTest_ClassB::class, $newPage->ClassName);
        $this->assertEquals('Class A', $newPage->Title);
    }

    public function testSiteTreeHintsCache()
    {
        $cms = CMSMain::create();
        /** @var Member $user */
        $user = $this->objFromFixture(Member::class, 'rootedituser');
        Security::setCurrentUser($user);
        $pageClass = array_values(SiteTree::page_type_classes())[0];
        $mockPageMissesCache = $this->getMockBuilder($pageClass)
            ->setMethods(['canCreate'])
            ->getMock();
        $mockPageMissesCache
            ->expects($this->exactly(3))
            ->method('canCreate');

        $mockPageHitsCache = $this->getMockBuilder($pageClass)
            ->setMethods(['canCreate'])
            ->getMock();
        $mockPageHitsCache
            ->expects($this->never())
            ->method('canCreate');


        // Initially, cache misses (1)
        Injector::inst()->registerService($mockPageMissesCache, $pageClass);
        $hints = $cms->SiteTreeHints();
        $this->assertNotNull($hints);

        // Now it hits
        Injector::inst()->registerService($mockPageHitsCache, $pageClass);
        $hints = $cms->SiteTreeHints();
        $this->assertNotNull($hints);

        // Mutating member record invalidates cache. Misses (2)
        $user->FirstName = 'changed';
        $user->write();
        Injector::inst()->registerService($mockPageMissesCache, $pageClass);
        $hints = $cms->SiteTreeHints();
        $this->assertNotNull($hints);

        // Now it hits again
        Injector::inst()->registerService($mockPageHitsCache, $pageClass);
        $hints = $cms->SiteTreeHints();
        $this->assertNotNull($hints);

        // Different user. Misses. (3)
        $user = $this->objFromFixture(Member::class, 'allcmssectionsuser');
        Security::setCurrentUser($user);
        Injector::inst()->registerService($mockPageMissesCache, $pageClass);
        $hints = $cms->SiteTreeHints();
        $this->assertNotNull($hints);
    }

    public function testSearchField()
    {
        $cms = CMSMain::create();
        $searchSchema = $cms->getSearchFieldSchema();

        $this->assertJsonStringEqualsJsonString(
            json_encode([
                'formSchemaUrl' => 'admin/pages/schema/SearchForm',
                'name' => 'Term',
                'placeholder' => 'Search "Pages"',
                'filters' => new \stdClass
            ]),
            $searchSchema
        );

        $request = new HTTPRequest(
            'GET',
            'admin/pages/schema/SearchForm',
            ['q' => [
                'Term' => 'test',
                'FilterClass' => 'SilverStripe\CMS\Controllers\CMSSiteTreeFilter_Search'
            ]]
        );
        $cms->setRequest($request);
        $searchSchema = $cms->getSearchFieldSchema();

        $this->assertJsonStringEqualsJsonString(
            json_encode([
                'formSchemaUrl' => 'admin/pages/schema/SearchForm',
                'name' => 'Term',
                'placeholder' => 'Search "Pages"',
                'filters' => [
                    'Search__Term' => 'test',
                    'Search__FilterClass' => 'SilverStripe\CMS\Controllers\CMSSiteTreeFilter_Search'
                ]
            ]),
            $searchSchema
        );
    }

    public function testCanOrganiseSitetree()
    {
        $cms = CMSMain::create();

        $this->assertFalse($cms->CanOrganiseSitetree());

        $this->logInWithPermission('CMS_ACCESS_CMSMain');
        $this->assertFalse($cms->CanOrganiseSitetree());

        $this->logOut();
        $this->logInWithPermission('SITETREE_REORGANISE');
        $this->assertTrue($cms->CanOrganiseSitetree());

        $this->logOut();
        $this->logInWithPermission('ADMIN');
        $this->assertTrue($cms->CanOrganiseSitetree());
    }
}