<?php

declare(strict_types=1);

namespace App\Tests\Unit\Administration\Application\Query\GetClasses;

use App\Administration\Application\Dto\PaginatedResult;
use App\Administration\Application\Port\PaginatedClassesReader;
use App\Administration\Application\Query\GetClasses\ClassDto;
use App\Administration\Application\Query\GetClasses\GetClassesHandler;
use App\Administration\Application\Query\GetClasses\GetClassesQuery;
use App\Administration\Application\Service\Cache\PaginatedQueryCache;
use DateTimeImmutable;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;
use Symfony\Component\Cache\Adapter\ArrayAdapter;
use Symfony\Component\Cache\Adapter\TagAwareAdapter;

final class GetClassesHandlerTest extends TestCase
{
    private PaginatedClassesReader $reader;
    private PaginatedQueryCache $cache;
    private GetClassesHandler $handler;

    protected function setUp(): void
    {
        $this->reader = $this->createMock(PaginatedClassesReader::class);
        $this->cache = new PaginatedQueryCache(
            new TagAwareAdapter(new ArrayAdapter()),
        );
        $this->handler = new GetClassesHandler($this->reader, $this->cache);
    }

    #[Test]
    public function returnsItemsForTenant(): void
    {
        $dto = $this->createClassDto();
        $this->reader->method('findPaginated')->willReturn(
            new PaginatedResult(items: [$dto], total: 1, page: 1, limit: 30),
        );

        $result = ($this->handler)(new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1'));

        self::assertCount(1, $result->items);
        self::assertSame(1, $result->total);
    }

    #[Test]
    public function mapsDtoFields(): void
    {
        $dto = $this->createClassDto();
        $this->reader->method('findPaginated')->willReturn(
            new PaginatedResult(items: [$dto], total: 1, page: 1, limit: 30),
        );

        $result = ($this->handler)(new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1'));

        $item = $result->items[0];
        self::assertSame('class-1', $item->id);
        self::assertSame('6eme A', $item->name);
        self::assertSame('sixieme', $item->level);
        self::assertSame(30, $item->capacity);
        self::assertSame('active', $item->status);
        self::assertSame('Description test', $item->description);
    }

    #[Test]
    public function paginatesResults(): void
    {
        $this->reader->method('findPaginated')->willReturn(
            new PaginatedResult(items: [], total: 50, page: 2, limit: 10),
        );

        $result = ($this->handler)(new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1', page: 2, limit: 10));

        self::assertSame(50, $result->total);
        self::assertSame(2, $result->page);
        self::assertSame(10, $result->limit);
    }

    #[Test]
    public function cachesResult(): void
    {
        $dto = $this->createClassDto();
        $this->reader->expects(self::once())->method('findPaginated')->willReturn(
            new PaginatedResult(items: [$dto], total: 1, page: 1, limit: 30),
        );

        $query = new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1');
        ($this->handler)($query);
        $result = ($this->handler)($query);

        self::assertCount(1, $result->items);
    }

    #[Test]
    public function clampsPageToMinimumOne(): void
    {
        $this->reader->method('findPaginated')->willReturn(
            new PaginatedResult(items: [], total: 0, page: 1, limit: 30),
        );

        $result = ($this->handler)(new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1', page: -5));

        self::assertSame(1, $result->page);
    }

    #[Test]
    public function clampsLimitToMaximumHundred(): void
    {
        $this->reader->method('findPaginated')->willReturn(
            new PaginatedResult(items: [], total: 0, page: 1, limit: 100),
        );

        $result = ($this->handler)(new GetClassesQuery(tenantId: 'tenant-1', academicYearId: 'year-1', limit: 500));

        self::assertSame(100, $result->limit);
    }

    private function createClassDto(): ClassDto
    {
        return new ClassDto(
            id: 'class-1',
            name: '6eme A',
            level: 'sixieme',
            capacity: 30,
            status: 'active',
            description: 'Description test',
            createdAt: new DateTimeImmutable('2026-01-15'),
            updatedAt: new DateTimeImmutable('2026-01-15'),
        );
    }
}