<?php

namespace SilverStripe\ContentReview\Tests;

use Page;
use SilverStripe\CMS\Controllers\CMSPageEditController;
use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\ContentReview\Extensions\ContentReviewCMSExtension;
use SilverStripe\ContentReview\Extensions\ContentReviewDefaultSettings;
use SilverStripe\ContentReview\Extensions\ContentReviewOwner;
use SilverStripe\ContentReview\Extensions\SiteTreeContentReview;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\FieldType\DBDate;
use SilverStripe\ORM\FieldType\DBDatetime;
use SilverStripe\Security\Group;
use SilverStripe\Security\Member;
use SilverStripe\SiteConfig\SiteConfig;

/**
 * This class tests that settings are inherited correctly based on the inherited,
 * custom or disabled settings.
 *
 * @mixin PHPUnit_Framework_TestCase
 */
class ContentReviewSettingsTest extends SapphireTest
{
    /**
     * @var string
     */
    protected static $fixture_file = 'ContentReviewSettingsTest.yml';

    /**
     * @var array
     */
    protected static $required_extensions = [
        SiteTree::class              => [SiteTreeContentReview::class],
        Group::class                 => [ContentReviewOwner::class],
        Member::class                => [ContentReviewOwner::class],
        CMSPageEditController::class => [ContentReviewCMSExtension::class],
        SiteConfig::class            => [ContentReviewDefaultSettings::class],
    ];

    public function testAdvanceReviewDate10Days()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = new Page();

        $page->ContentReviewType = "Custom";
        $page->ReviewPeriodDays = 10;

        $this->assertTrue($page->advanceReviewDate());

        $page->write();

        $this->assertEquals(date('Y-m-d', strtotime("now + 10 days")), $page->NextReviewDate);
    }

    public function testAdvanceReviewDateNull()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = new Page();

        $page->ContentReviewType = "Custom";
        $page->ReviewPeriodDays = 0;

        $this->assertFalse($page->advanceReviewDate());

        $page->write();

        $this->assertEquals(null, $page->NextReviewDate);
    }

    public function testAdvanceReviewFromCustomSettings()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "custom");

        $this->assertTrue($page->advanceReviewDate());

        $page->write();

        $this->assertEquals(date('Y-m-d', strtotime("now + " . $page->ReviewPeriodDays . " days")), $page->NextReviewDate);
    }

    public function testAdvanceReviewFromInheritedSettings()
    {
        // When a parent page is advanced, the next review date of the child is not automatically advanced
        $parentPage = $this->objFromFixture(Page::class, "page-1");
        $this->assertTrue($parentPage->advanceReviewDate());
        $parentPage->write();

        $page = $this->objFromFixture(Page::class, "page-1-1");
        $this->assertEquals(date('Y-m-d', strtotime("now + 5 days")), $parentPage->NextReviewDate);
        $this->assertEquals('2011-04-12', $page->NextReviewDate);

        // When a sub page is advanced, the next review date is advanced by the number of days in the parent
        $this->assertTrue($page->advanceReviewDate());
        $page->write();
        $this->assertEquals(date('Y-m-d', strtotime("now + 5 days")), $page->NextReviewDate);
    }

    public function testAdvanceReviewFromInheritedSiteConfigSettings()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "inherit");

        /** @var SiteConfig|ContentReviewDefaultSettings $siteConfig */
        $siteConfig = $this->objFromFixture(SiteConfig::class, "default");

        $this->assertTrue($page->advanceReviewDate());

        $page->write();

        $this->assertEquals(date('Y-m-d', strtotime("now + " . $siteConfig->ReviewPeriodDays . " days")), $page->NextReviewDate);
    }

    public function testGetSettingsObjectFromCustom()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "custom");

        $this->assertEquals("Custom", $page->ContentReviewType);
        $this->assertEquals($page, $page->getOptions());
    }

    public function testGetSettingsObjectFromDisabled()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "disabled");

        $this->assertEquals("Disabled", $page->ContentReviewType);
        $this->assertFalse($page->getOptions());
    }

    public function testGetOptionObjectFromInheritedDisabled()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "page-2-1-1");

        $this->assertEquals("Inherit", $page->ContentReviewType);
        $this->assertFalse($page->getOptions());
    }

    public function testGetOptionObjectFromDeeplyInheritedPage()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "page-3-1-1-1");

        $this->assertEquals("Inherit", $page->ContentReviewType);
        $this->assertInstanceOf(SiteConfig::class, $page->getOptions());
    }

    public function testGetSettingsObjectFromInheritPage()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "page-1-1");

        /** @var Page|SiteTreeContentReview $parentPage */
        $parentPage = $this->objFromFixture(Page::class, "page-1");

        $this->assertEquals("Inherit", $page->ContentReviewType);
        $this->assertEquals(get_class($parentPage), get_class($page->getOptions()));
        $this->assertEquals($parentPage->ID, $page->getOptions()->ID);
    }

    public function testGetSettingsObjectFromInheritedRootPage()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "inherit");

        $this->assertEquals("Inherit", $page->ContentReviewType);
        $this->assertEquals($this->objFromFixture(SiteConfig::class, "default"), $page->getOptions());
    }

    public function testGetNextReviewDateFromCustomSettings()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, 'custom');

        $date = $page->getReviewDate();

        $this->assertEquals('2010-02-01', $date->format('Y-MM-dd'));
    }

    public function testGetNextReviewDateFromSiteConfigInheritedSetting()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "inherit");

        $nextReviewDate = $page->getReviewDate();

        $this->assertInstanceOf(DBDate::class, $nextReviewDate);

        /** @var SiteConfig|ContentReviewDefaultSettings $siteConfig */
        $siteConfig = $this->objFromFixture(SiteConfig::class, "default");

        $expected = $this->addDaysToDate(DBDatetime::now(), $siteConfig->ReviewPeriodDays);

        $this->assertEquals($expected, $nextReviewDate->format('Y-MM-dd'));
    }

    public function testGetNextReviewDateFromPageInheritedSetting()
    {
        // Although page-1-1 inherits from page-1, it has an independent review date
        $page = $this->objFromFixture(Page::class, "page-1-1");
        $nextReviewDate = $page->getReviewDate();
        $this->assertInstanceOf(DBDate::class, $nextReviewDate);
        $this->assertEquals('2011-04-12', $nextReviewDate->format('Y-MM-dd'));
    }

    public function testUpdateNextReviewDateFromCustomToDisabled()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "custom");

        // before write()
        $this->assertEquals("2010-02-01", $page->NextReviewDate);

        $page->ContentReviewType = "Disabled";
        $page->write();

        DataObject::flush_and_destroy_cache();
        unset($page);

        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "custom");

        $this->assertNull($page->NextReviewDate);
    }

    public function testUpdateNextReviewDateFromDisabledToCustom()
    {
        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "disabled");

        $this->assertNull($page->NextReviewDate);

        $page->ContentReviewType = "Custom";
        $page->ReviewPeriodDays = "7";
        $page->write();

        DataObject::flush_and_destroy_cache();
        unset($page);

        /** @var Page|SiteTreeContentReview $page */
        $page = $this->objFromFixture(Page::class, "disabled");

        $expected = date('Y-m-d', strtotime("+ " . $page->ReviewPeriodDays . " days"));

        $this->assertEquals($expected, $page->NextReviewDate);
    }

    public function testParentChangedOptionsAndChildShouldToo()
    {
        /** @var Page|SiteTreeContentReview $parentPage */
        $parentPage = $this->objFromFixture(Page::class, "page-1");

        /** @var Page|SiteTreeContentReview $childPage */
        $childPage = $this->objFromFixture(Page::class, "page-1-1");

        // Parent and child pages have different review dates
        $this->assertNotEquals($parentPage->NextReviewDate, $childPage->NextReviewDate);

        // But if we change the parent page ReviewPeriodDays to 10, the childs stays the same
        $parentPage->ReviewPeriodDays = 10;
        $parentPage->write();

        // Flush all the caches!
        DataObject::flush_and_destroy_cache();

        /** @var Page|SiteTreeContentReview $page */
        $parentPage = $this->objFromFixture(Page::class, "page-1");

        /** @var Page|SiteTreeContentReview $page */
        $childPage = $this->objFromFixture(Page::class, "page-1-1");

        // The parent page's date advances, but not the child's
        $this->assertEquals('2011-04-12', $childPage->NextReviewDate);
        $this->assertEquals($this->addDaysToDate(date('Y-m-d'), 10), $parentPage->NextReviewDate);

        // Reviewing the child page should, however, advance its review by 10 days
        $childPage->advanceReviewDate();
        $childPage->write();
        $this->assertEquals($this->addDaysToDate(date('Y-m-d'), 10), $childPage->NextReviewDate);
    }

    /**
     * Note: all input dates should be DBDatetime or strings in CLDR date format. See {@link DBDate} for information
     *
     * @param string|DBDatetime $date
     * @param int               $days
     * @param string            $format
     *
     * @return bool|string
     */
    private function addDaysToDate($date, $days, $format = 'Y-MM-dd')
    {
        if (is_object($date)) {
            $sec = strtotime("+ " . $days . " days", $date->getTimestamp());
        } else {
            $sec = strtotime("+ " . $days . " days", DBDate::create()->setValue($date)->getTimestamp());
        }

        return DBDate::create()->setValue($sec)->format($format);
    }
}