<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\WordPress\Status;

use Brain\Monkey\Functions;
use LIT\MCP\Abilities\WriteFailed;
use LIT\MCP\ChangeLog\ChangeLog;
use LIT\MCP\Integrations\WordPress\Status\PostTrashAbility;
use LIT\MCP\Tests\Support\FakeChangeLog;
use LIT\MCP\Tests\Support\SchemaFixture;
use LIT\MCP\Tests\Unit\TestCase;
use RuntimeException;
use WP_Post;

final class PostTrashAbilityTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        $this->options([]);
        Functions\when('wp_get_associated_nav_menu_items')->justReturn([]);
    }

    /** @param array<string, mixed> $options */
    private function options(array $options): void
    {
        Functions\when('get_option')->alias(static fn (string $name, mixed $default = false) => $options[$name] ?? $default);
    }

    private function ability(ChangeLog $log): PostTrashAbility
    {
        Functions\when('get_post')->justReturn(new WP_Post(['ID' => 5, 'post_type' => 'page', 'post_title' => 'Alt', 'post_status' => 'publish']));
        Functions\when('current_user_can')->justReturn(true);
        $schema = SchemaFixture::managed();

        return new PostTrashAbility($schema, $log);
    }

    public function testRequiresConfirmation(): void
    {
        Functions\expect('wp_trash_post')->never();

        $result = $this->ability(FakeChangeLog::forbidden())->execute(['post_id' => 5]);

        self::assertSame('lit_confirm_required', $result->get_error_code());
    }

    public function testMovesToTrashNeverDeletes(): void
    {
        Functions\expect('wp_trash_post')->once()->with(5)->andReturn(new WP_Post(['ID' => 5]));
        Functions\expect('wp_delete_post')->never();
        $log = new FakeChangeLog(2);

        $result = $this->ability($log)->execute(['post_id' => 5, 'confirm' => true]);

        self::assertSame('trashed', $result['changed'][0]['action']);
        self::assertStringContainsString('Papierkorb', $result['summary']);
        $log->assertRecorded([
            'ability' => 'lit/post-trash',
            'object_type' => 'page',
            'object_id' => '5',
            'summary' => '"Alt" in den Papierkorb gelegt',
            'revision_id' => null,
        ]);
    }

    public function testRefusesWhenTheTrashIsDisabledInsteadOfDeleting(): void
    {
        Functions\when('get_post')->justReturn(new WP_Post(['ID' => 5, 'post_type' => 'page', 'post_status' => 'publish']));
        Functions\when('current_user_can')->justReturn(true);
        Functions\expect('wp_trash_post')->never();
        $schema = SchemaFixture::managed();
        $ability = new PostTrashAbility($schema, FakeChangeLog::forbidden(), static fn (): bool => false);

        $result = $ability->execute(['post_id' => 5, 'confirm' => true]);

        self::assertSame('lit_unsupported', $result->get_error_code());
    }

    public function testAHookThrowingDuringTheWriteIsAPartialWrite(): void
    {
        Functions\when('wp_trash_post')->alias(static function (): void {
            throw new RuntimeException('save_post-Hook kaputt');
        });
        $log = FakeChangeLog::partialsOnly();

        try {
            $this->ability($log)->execute(['post_id' => 5, 'confirm' => true]);
            self::fail('WriteFailed expected');
        } catch (WriteFailed $e) {
            self::assertFalse($e->rolledBack);
            self::assertSame(5, $e->postId);
            self::assertStringContainsString('save_post-Hook kaputt', $e->getMessage());
            self::assertSame('lit_partial_write', $e->toError()->get_error_code());
        }
        $log->assertPartials(['ability' => 'lit/post-trash', 'object_type' => 'page', 'object_id' => '5']);
    }

    public function testAnAlreadyTrashedPostIsANoOp(): void
    {
        $ability = $this->ability(FakeChangeLog::forbidden());
        Functions\when('get_post')->justReturn(new WP_Post(['ID' => 5, 'post_type' => 'page', 'post_title' => 'Alt', 'post_status' => 'trash']));
        Functions\expect('wp_trash_post')->never();

        $result = $ability->execute(['post_id' => 5, 'confirm' => true]);

        self::assertSame([], $result['changed']);
        self::assertStringContainsString('bereits im Papierkorb', $result['summary']);
    }

    public function testWarnsWhenTrashingTheFrontPageOrThePostsPage(): void
    {
        $this->options(['show_on_front' => 'page', 'page_on_front' => '5', 'page_for_posts' => '9']);
        Functions\when('wp_trash_post')->justReturn(new WP_Post(['ID' => 5]));
        $log = new FakeChangeLog(3);
        $ability = $this->ability($log);

        $confirm = $ability->execute(['post_id' => 5]);
        $result = $ability->execute(['post_id' => 5, 'confirm' => true]);

        self::assertStringContainsString('Startseite', $confirm->get_error_message());
        self::assertCount(1, $result['warnings']);
        self::assertStringContainsString('Startseite', $result['warnings'][0]);
        self::assertTrue($result['ok']);

        $this->options(['show_on_front' => 'page', 'page_on_front' => '9', 'page_for_posts' => '5']);
        self::assertStringContainsString('Beitragsseite', $ability->execute(['post_id' => 5, 'confirm' => true])['warnings'][0]);

        $this->options(['show_on_front' => 'posts', 'page_on_front' => '5']);
        self::assertSame([], $ability->execute(['post_id' => 5, 'confirm' => true])['warnings']);
    }

    public function testWarnsAndNamesTheMenusThatLinkThePost(): void
    {
        Functions\when('wp_get_associated_nav_menu_items')->alias(
            static fn (int $id, string $type): array => $id === 5 && $type === 'post_type' ? [40, 41] : []
        );
        Functions\when('wp_get_object_terms')->alias(
            static fn (array $ids, string $taxonomy, array $args): array =>
                $ids === [40, 41] && $taxonomy === 'nav_menu' && $args === ['fields' => 'names']
                    ? ['Hauptmenü', 'Footer', 'Hauptmenü']
                    : []
        );
        Functions\when('wp_trash_post')->justReturn(new WP_Post(['ID' => 5]));
        $log = new FakeChangeLog(3);

        $result = $this->ability($log)->execute(['post_id' => 5, 'confirm' => true]);

        self::assertCount(1, $result['warnings']);
        self::assertStringContainsString('"Hauptmenü", "Footer"', $result['warnings'][0]);
        self::assertSame(1, substr_count($result['warnings'][0], 'Hauptmenü'));
    }

    public function testIsDestructiveAndIndirect(): void
    {
        $ability = $this->ability(FakeChangeLog::forbidden());

        self::assertTrue($ability->annotations()['destructive']);
        self::assertFalse($ability->isDirect());
    }
}