<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\Divi\Library;

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\Divi\Library\GlobalUsages;
use LIT\MCP\Tests\Support\LibraryFixtures;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;
use WP_Post;

final class GlobalUsagesTest extends TestCase
{
    /** Audit L1: one query, ID, status and type only – never the content, no COUNT, no second scan. */
    public function testFindsInstancesLikeDiviWithOneQueryWithoutContent(): void
    {
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $queries = [];
        $db->allows('get_results')->andReturnUsing(static function (string $sql) use (&$queries): array {
            $queries[] = $sql;

            return [
                ['ID' => '1053', 'post_status' => 'draft', 'post_type' => 'page'],
                ['ID' => '1061', 'post_status' => 'private', 'post_type' => 'et_header_layout'],
            ];
        });

        $rows = (new GlobalUsages($db))->rows(1058);

        self::assertSame(
            [
                ['id' => 1053, 'status' => 'draft', 'type' => 'page'],
                ['id' => 1061, 'status' => 'private', 'type' => 'et_header_layout'],
            ],
            $rows
        );
        self::assertCount(1, $queries);
        self::assertStringStartsWith('SELECT ID, post_status, post_type FROM', $queries[0]);
        self::assertStringContainsString("LIKE '%\"globalModule\":\"1058\"%'", $queries[0]);
        self::assertStringContainsString("post_status NOT IN ('trash', 'auto-draft', 'inherit')", $queries[0]);
        self::assertStringContainsString("post_type <> 'revision'", $queries[0]);
        self::assertStringNotContainsString('LIMIT', $queries[0]);
        self::assertStringNotContainsString('post_content,', $queries[0]);
    }

    /** Audit L4: readable posts with title, unreadable ones only counted. */
    public function testListsReadablePostsAndCountsTheOthers(): void
    {
        $usages = LibraryFixtures::usages([
            ['id' => 1053, 'status' => 'draft', 'type' => 'page'],
            ['id' => 1061, 'status' => 'private', 'type' => 'et_header_layout'],
        ]);
        Functions\when('get_post')->alias(
            static fn (int $id): WP_Post => new WP_Post(['ID' => $id, 'post_title' => 'Titel ' . $id])
        );
        Functions\when('current_user_can')->alias(
            static fn (string $cap, int $id): bool => $id !== 1061
        );

        $report = $usages->report(1058);

        self::assertSame(2, $report->count);
        self::assertSame(
            [['post_id' => 1053, 'title' => 'Titel 1053', 'status' => 'draft', 'type' => 'page']],
            $report->items
        );
        self::assertSame(1, $report->hidden);
        self::assertSame(1, $report->live);
        self::assertSame([], $report->blocked);
        self::assertSame(1, $report->blockedHidden);
        self::assertSame(
            ['affected' => $report->items, 'affected_count' => 2, 'hidden_count' => 1, 'blocked_hidden_count' => 1],
            $report->details()
        );
    }

    /** Audit L1: rights are checked in chunks, each with its own primed cache that is dropped afterwards. */
    public function testChecksLargeSetsInChunksAndReleasesTheCache(): void
    {
        $usages = LibraryFixtures::usages(LibraryFixtures::rows(range(1, 450)));
        $primed = [];
        Functions\when('_prime_post_caches')->alias(static function (array $ids) use (&$primed): void {
            $primed[] = count($ids);
        });
        $deleted = 0;
        Functions\when('wp_cache_delete')->alias(static function () use (&$deleted): bool {
            ++$deleted;

            return true;
        });
        Functions\when('get_post')->justReturn(null);
        Functions\when('current_user_can')->alias(static fn (string $cap, int $id): bool => $id % 100 !== 0);

        $report = $usages->report(1058);

        self::assertSame([GlobalUsages::CHUNK, GlobalUsages::CHUNK, 50], $primed);
        self::assertSame(450, $deleted);
        self::assertSame(450, $report->count);
        self::assertCount(GlobalUsages::LIMIT, $report->items);
        self::assertSame(4, $report->hidden);
        self::assertSame(4, $report->blockedHidden);
        self::assertTrue($report->blocks());
    }

    /** Audit L1: above the hard cap nothing is checked for edit_post, and the report blocks. */
    public function testAboveTheHardCapNoPostIsCheckedForEditing(): void
    {
        $usages = LibraryFixtures::usages(LibraryFixtures::rows(range(1, GlobalUsages::HARD_CAP + 1)));
        Functions\when('get_post')->justReturn(null);
        $asked = [];
        Functions\when('current_user_can')->alias(static function (string $cap) use (&$asked): bool {
            $asked[$cap] = ($asked[$cap] ?? 0) + 1;

            return true;
        });

        $report = $usages->report(1058);

        self::assertTrue($report->tooMany);
        self::assertTrue($report->blocks());
        self::assertArrayNotHasKey('edit_post', $asked);
        self::assertSame(GlobalUsages::CHECK_CAP, $asked['read_post']);
    }

    public function testAListingSkipsTheEditChecks(): void
    {
        $usages = LibraryFixtures::usages(LibraryFixtures::rows([1053]));
        Functions\when('get_post')->justReturn(null);
        Functions\when('current_user_can')->alias(static fn (string $cap): bool => $cap !== 'edit_post');

        $report = $usages->report(1058, false);

        self::assertFalse($report->blocks());
        self::assertSame(['affected', 'affected_count'], array_keys($report->listing()));
    }
}