<?php

declare(strict_types=1);

namespace Tests\Feature\Api;

use App\Models\Call;
use App\Models\Member;
use App\Models\Project;
use App\Models\Repository;
use App\Models\Technology;
use App\Services\TaskStream\TaskStreamClient;
use Illuminate\Foundation\Testing\RefreshDatabase;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

/**
 * The contract the public frontend depends on.
 */
class PublicApiTest extends TestCase
{
    use RefreshDatabase;

    protected function setUp(): void
    {
        parent::setUp();

        // Symfony's Request::create() injects "Accept-Language: en-us,en;q=0.5"
        // by default, and the API honours content negotiation — so without
        // this every test would silently be asking for English. Real callers
        // send their own header or ?lang=; these tests say so explicitly.
        $this->withHeaders(['Accept-Language' => 'es']);
    }

    #[Test]
    public function it_serves_published_projects_without_any_token(): void
    {
        Project::factory()->published()->create();
        Project::factory()->draft()->create();

        $response = $this->getJson('/api/public/v1/projects')->assertOk();

        $this->assertCount(1, $response->json('data'));
    }

    #[Test]
    public function it_resolves_a_project_by_slug_within_the_active_locale(): void
    {
        Project::factory()->published()->create([
            'title' => ['es' => 'Mi proyecto', 'ca' => 'El meu projecte'],
            'slug' => ['es' => 'mi-proyecto', 'ca' => 'el-meu-projecte'],
        ]);

        $this->getJson('/api/public/v1/projects/mi-proyecto')
            ->assertOk()
            ->assertJsonPath('data.title', 'Mi proyecto');

        $this->getJson('/api/public/v1/projects/el-meu-projecte?lang=ca')
            ->assertOk()
            ->assertJsonPath('data.title', 'El meu projecte');

        // A Catalan slug must not resolve while the Spanish locale is active:
        // that would serve one URL under two addresses.
        $this->getJson('/api/public/v1/projects/el-meu-projecte')->assertNotFound();
    }

    #[Test]
    public function it_points_to_the_board_in_taskstream_when_there_is_one(): void
    {
        config([
            'services.taskstream.api_url' => 'https://api.taskstream.test',
            'services.taskstream.web_url' => 'https://taskstream.test',
        ]);
        $this->app->forgetInstance(TaskStreamClient::class);
        Project::factory()->published()->create([
            'slug' => ['es' => 'con-tablero'],
            'taskstream_key' => 'WEB',
        ]);
        Project::factory()->published()->create(['slug' => ['es' => 'sin-tablero']]);

        $this->getJson('/api/public/v1/projects/con-tablero')
            ->assertOk()
            ->assertJsonPath('data.taskstream', [
                'key' => 'WEB',
                'url' => 'https://taskstream.test/p/WEB',
                'web_url' => 'https://taskstream.test',
                'showcase_url' => 'https://api.taskstream.test/api/explore/projects/WEB/showcase',
            ]);
        $this->getJson('/api/public/v1/projects/sin-tablero')
            ->assertJsonPath('data.taskstream', null);
    }

    #[Test]
    public function it_returns_hreflang_alternates_for_every_translated_locale(): void
    {
        Project::factory()->published()->create([
            'title' => ['es' => 'Uno', 'en' => 'One', 'ca' => 'U'],
            'slug' => ['es' => 'uno', 'en' => 'one', 'ca' => 'u'],
        ]);

        $alternates = $this->getJson('/api/public/v1/projects/uno')
            ->assertOk()
            ->json('data.alternates');

        // The default locale carries no prefix; the others do, each with its
        // own translated path segment.
        $this->assertSame('/proyectos/uno', $alternates['es']);
        $this->assertSame('/en/projects/one', $alternates['en']);
        $this->assertSame('/ca/projectes/u', $alternates['ca']);
    }

    #[Test]
    public function a_locale_without_a_translation_gets_no_alternate(): void
    {
        Project::factory()->published()->create([
            'title' => ['es' => 'Solo español'],
            'slug' => ['es' => 'solo-espanol'],
        ]);

        $alternates = $this->getJson('/api/public/v1/projects/solo-espanol')
            ->assertOk()
            ->json('data.alternates');

        // Emitting an alternate here would advertise a URL that 404s.
        $this->assertSame(['es'], array_keys($alternates));
    }

    #[Test]
    public function listings_do_not_lazy_load_relations(): void
    {
        // Guards the N+1 that strict mode caught during development: the
        // needs_help flag must come from a count, not from the relation.
        $project = Project::factory()->published()->create(['needs_help' => false]);
        Call::factory()->create(['project_id' => $project->id]);

        $this->getJson('/api/public/v1/projects')
            ->assertOk()
            ->assertJsonPath('data.0.needs_help', true);
    }

    #[Test]
    public function unpublished_content_is_hidden_unless_the_preview_secret_is_presented(): void
    {
        config()->set('site.preview_token', 'the-secret');

        Project::factory()->published()->create();
        Project::factory()->draft()->create();

        $this->assertCount(1, $this->getJson('/api/public/v1/projects')->json('data'));

        $this->assertCount(2, $this->getJson('/api/public/v1/projects', [
            'X-Preview-Token' => 'the-secret',
        ])->json('data'));

        $this->assertCount(1, $this->getJson('/api/public/v1/projects', [
            'X-Preview-Token' => 'wrong',
        ])->json('data'));
    }

    #[Test]
    public function an_unset_preview_secret_never_grants_access(): void
    {
        config()->set('site.preview_token', null);

        Project::factory()->draft()->create();

        $this->assertCount(0, $this->getJson('/api/public/v1/projects', [
            'X-Preview-Token' => '',
        ])->json('data'));
    }

    #[Test]
    public function preview_responses_are_never_cached(): void
    {
        config()->set('site.preview_token', 'the-secret');

        $this->getJson('/api/public/v1/projects', ['X-Preview-Token' => 'the-secret'])
            ->assertHeader('Cache-Control', 'no-store, private');
    }

    #[Test]
    public function public_responses_carry_caching_headers_and_answer_304(): void
    {
        Project::factory()->published()->create();

        $response = $this->getJson('/api/public/v1/projects')->assertOk();

        $etag = $response->headers->get('ETag');
        $this->assertNotNull($etag);
        $this->assertStringContainsString('s-maxage', $response->headers->get('Cache-Control'));
        $this->assertStringContainsString('stale-while-revalidate', $response->headers->get('Cache-Control'));

        // Language is negotiated, so a shared cache must vary on it.
        $this->assertStringContainsString('Accept-Language', $response->headers->get('Vary'));

        $this->getJson('/api/public/v1/projects', ['If-None-Match' => $etag])
            ->assertStatus(304);
    }

    #[Test]
    public function an_open_call_states_the_time_it_asks_for(): void
    {
        Call::factory()->create([
            'slug' => ['es' => 'frontend'],
            'hours_per_week' => 4,
            'duration_weeks' => 8,
            'project_id' => null,
        ]);

        $this->getJson('/api/public/v1/calls/frontend')
            ->assertOk()
            ->assertJsonPath('data.hours_per_week', 4)
            ->assertJsonPath('data.duration_weeks', 8)
            ->assertJsonPath('data.total_hours', 32);
    }

    #[Test]
    public function a_call_never_leaks_an_unpublished_project(): void
    {
        $hidden = Project::factory()->draft()->create();
        Call::factory()->create(['project_id' => $hidden->id]);
        Call::factory()->create(['project_id' => null]);

        $this->assertCount(1, $this->getJson('/api/public/v1/calls')->json('data'));
    }

    #[Test]
    public function closed_calls_are_not_listed(): void
    {
        Call::factory()->create(['project_id' => null]);
        Call::factory()->closed()->create(['project_id' => null]);
        Call::factory()->create(['project_id' => null, 'closes_at' => now()->subDay()]);

        $this->assertCount(1, $this->getJson('/api/public/v1/calls')->json('data'));
    }

    #[Test]
    public function members_hide_the_non_public_and_the_departed(): void
    {
        Member::factory()->create(['name' => 'Visible']);
        Member::factory()->hidden()->create();
        Member::factory()->past()->create();

        $data = $this->getJson('/api/public/v1/members')->assertOk()->json('data');

        $this->assertCount(1, $data);
        $this->assertSame('Visible', $data[0]['name']);

        // Alumni are still reachable when the frontend asks for them.
        $this->assertCount(2, $this->getJson('/api/public/v1/members?include_past=1')->json('data'));
    }

    #[Test]
    public function the_radar_only_lists_placed_technologies(): void
    {
        Technology::factory()->count(3)->create();
        Technology::factory()->count(2)->offRadar()->create();

        $this->assertCount(3, $this->getJson('/api/public/v1/radar')->json('data'));
    }

    #[Test]
    public function good_first_issues_exclude_claimed_and_hidden_ones(): void
    {
        $visible = Repository::factory()->create();
        $hidden = Repository::factory()->hidden()->create();

        $visible->issues()->create([
            'number' => 1, 'title' => 'Free to take',
            'html_url' => 'https://example.test/1',
            'is_good_first_issue' => true, 'assignee' => null,
        ]);

        $visible->issues()->create([
            'number' => 2, 'title' => 'Already claimed',
            'html_url' => 'https://example.test/2',
            'is_good_first_issue' => true, 'assignee' => 'someone',
        ]);

        $hidden->issues()->create([
            'number' => 1, 'title' => 'In a hidden repo',
            'html_url' => 'https://example.test/3',
            'is_good_first_issue' => true, 'assignee' => null,
        ]);

        $data = $this->getJson('/api/public/v1/good-first-issues')->assertOk()->json('data');

        $this->assertCount(1, $data);
        $this->assertSame('Free to take', $data[0]['title']);
    }

    #[Test]
    public function the_slugs_endpoint_lists_every_public_url(): void
    {
        Project::factory()->published()->create(['slug' => ['es' => 'proyecto', 'ca' => 'projecte']]);
        Member::factory()->create(['slug' => 'ada']);

        $data = $this->getJson('/api/public/v1/slugs')->assertOk()->json('data');

        $this->assertSame('/proyectos/proyecto', $data['projects'][0]['alternates']['es']);
        $this->assertSame('/ca/projectes/projecte', $data['projects'][0]['alternates']['ca']);
        $this->assertSame('/equipo/ada', $data['members'][0]['alternates']['es']);
        $this->assertSame('/ca/equip/ada', $data['members'][0]['alternates']['ca']);
    }

    #[Test]
    public function the_site_endpoint_reports_locales_and_headline_numbers(): void
    {
        Project::factory()->published()->active()->create();
        Member::factory()->create();

        $this->getJson('/api/public/v1/site')
            ->assertOk()
            ->assertJsonPath('data.default_locale', 'es')
            ->assertJsonPath('data.stats.projects', 1)
            ->assertJsonPath('data.stats.active_projects', 1)
            ->assertJsonPath('data.stats.members', 1)
            ->assertJsonCount(3, 'data.locales');
    }
}