<?php

declare(strict_types=1);

namespace BattleForge\Tests\Integration;

use BattleForge\Http\Handlers\GetBundledScenarios;
use BattleForge\Http\Request;
use PHPUnit\Framework\TestCase;

final class GetBundledScenariosTest extends TestCase
{
    private string $tmpDir;

    protected function setUp(): void
    {
        $this->tmpDir = sys_get_temp_dir() . '/bf-bundled-' . bin2hex(random_bytes(4));
        mkdir($this->tmpDir, 0700, true);
    }

    protected function tearDown(): void
    {
        if (is_dir($this->tmpDir)) {
            foreach (glob($this->tmpDir . '/*') ?: [] as $file) {
                unlink($file);
            }
            rmdir($this->tmpDir);
        }
    }

    public function testReturnsBundledScenariosFromTheConfiguredDirectory(): void
    {
        $this->writeManifest([
            'skirmish' => ['name' => 'Skirmish', 'summary' => 'Open ground.'],
            'hold-the-line' => ['name' => 'Hold the Line', 'summary' => 'Defend.'],
        ]);
        $this->writeFixture('skirmish', '{}');
        $this->writeFixture('hold-the-line', '{}');

        $handler = new GetBundledScenarios($this->tmpDir);
        $response = $handler->handle(new Request([], [], [], [], [], '', 'GET', '/scenarios/bundled', null, ''), []);

        self::assertSame(200, $response->status);
        $body = json_decode($response->body, true);
        self::assertSame(
            [
                ['id' => 'hold-the-line', 'name' => 'Hold the Line', 'summary' => 'Defend.'],
                ['id' => 'skirmish', 'name' => 'Skirmish', 'summary' => 'Open ground.'],
            ],
            $body,
        );
    }

    public function testFiltersOutFixturesWithoutAManifestEntry(): void
    {
        $this->writeManifest(['skirmish' => ['name' => 'Skirmish', 'summary' => 'Open ground.']]);
        $this->writeFixture('skirmish', '{}');
        $this->writeFixture('rogue', '{}');

        $handler = new GetBundledScenarios($this->tmpDir);
        $response = $handler->handle(new Request([], [], [], [], [], '', 'GET', '/scenarios/bundled', null, ''), []);

        $body = json_decode($response->body, true);
        self::assertCount(1, $body);
        self::assertSame('skirmish', $body[0]['id']);
    }

    public function testIgnoresFilesWithDisallowedFilenames(): void
    {
        $this->writeManifest(['skirmish' => ['name' => 'Skirmish', 'summary' => 'Open ground.']]);
        $this->writeFixture('skirmish', '{}');
        $this->writeFixture('bad..json', '{}');
        $this->writeFixture('README', 'plain text');

        $handler = new GetBundledScenarios($this->tmpDir);
        $response = $handler->handle(new Request([], [], [], [], [], '', 'GET', '/scenarios/bundled', null, ''), []);

        $body = json_decode($response->body, true);
        self::assertCount(1, $body);
        self::assertSame('skirmish', $body[0]['id']);
    }

    public function testReturnsEmptyArrayWhenManifestIsMissing(): void
    {
        $handler = new GetBundledScenarios($this->tmpDir);
        $response = $handler->handle(new Request([], [], [], [], [], '', 'GET', '/scenarios/bundled', null, ''), []);

        self::assertSame(200, $response->status);
        self::assertSame([], json_decode($response->body, true));
    }

    /** @param array<string, array{name: string, summary: string}> $entries */
    private function writeManifest(array $entries): void
    {
        file_put_contents($this->tmpDir . '/manifest.json', json_encode($entries, JSON_THROW_ON_ERROR));
    }

    private function writeFixture(string $name, string $body): void
    {
        file_put_contents($this->tmpDir . '/' . $name . '.json', $body);
    }
}