<?php

declare(strict_types=1);

namespace Tests\Feature\Panel;

use App\Enums\PageStatus;
use App\Enums\ReviewEvent;
use App\Models\Page;
use App\Models\Project;
use App\Models\Service;
use App\Models\User;
use App\Notifications\ReviewRequested;
use App\Notifications\ReviewReturned;
use App\Support\Health\Finding;
use App\Support\Health\HealthReport;
use Database\Seeders\RolePermissionSeeder;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Notification;
use PHPUnit\Framework\Attributes\Test;
use Tests\FakesPireon;
use Tests\TestCase;

/**
 * Handing work to somebody who is allowed to publish it.
 *
 * The feature exists because `publish` is a permission of its own: there are
 * people who can finish a piece of work and not put it on the site. What these
 * tests hold still is the handover — that asking needs no new permission, that
 * answering needs the one that made the handover necessary, and that nothing
 * can leave a record live and still marked as waiting.
 */
class ReviewsTest extends TestCase
{
    use FakesPireon, RefreshDatabase;

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

        $this->seed(RolePermissionSeeder::class);
        Notification::fake();
    }

    /**
     * Somebody who can write and not publish — the shipped `writer` role,
     * which is the whole reason this feature has anywhere to happen.
     */
    protected function writer(): User
    {
        return $this->userWithRoles('writer');
    }

    protected function draft(?User $author = null): Page
    {
        return Page::factory()->create([
            'status' => PageStatus::Draft,
            'published_at' => null,
            'author_id' => $author?->id,
        ]);
    }

    #[Test]
    public function asking_for_a_review_records_who_asked_and_what_they_said(): void
    {
        $editor = $this->userWithRoles('editor');
        $page = $this->draft($editor);

        $page->requestReview(null, 'Falta la foto de portada', $editor);

        $page->refresh();

        $this->assertTrue($page->isAwaitingReview());
        $this->assertSame($editor->id, $page->review_requested_by);

        $comment = $page->reviewComments()->first();

        $this->assertSame(ReviewEvent::Requested, $comment->event);
        $this->assertSame('Falta la foto de portada', $comment->body);
        $this->assertSame($editor->name, $comment->author());
    }

    /**
     * The status enum already had a `Review` value, shown in the table and
     * offered as a filter. It has to keep telling the truth.
     */
    #[Test]
    public function a_page_in_review_says_so_in_its_status(): void
    {
        $page = $this->draft();

        $page->requestReview();

        $this->assertSame(PageStatus::Review, $page->refresh()->status);
    }

    /**
     * Nothing about asking is a new permission: being allowed to edit
     * something is already the right to say you have finished with it.
     */
    #[Test]
    public function somebody_who_cannot_publish_can_still_ask(): void
    {
        $writer = $this->writer();

        $this->assertTrue($writer->cannot('pages.publish'));
        $this->assertTrue($writer->can('pages.update'));

        $page = $this->draft($writer);
        $page->requestReview(null, null, $writer);

        $this->assertTrue($page->refresh()->isAwaitingReview());
    }

    /**
     * The distinction the catalogue always made and no role exercised: a
     * separate `publish` permission is only meaningful if somebody holds
     * `update` without it.
     */
    #[Test]
    public function the_shipped_writer_role_is_the_one_this_exists_for(): void
    {
        $writer = $this->writer();

        $this->assertTrue($writer->can('pages.update'));
        $this->assertTrue($writer->can('projects.update'));
        $this->assertTrue($writer->can('services.update'));

        $this->assertTrue($writer->cannot('pages.publish'));
        $this->assertTrue($writer->cannot('projects.publish'));
        $this->assertTrue($writer->cannot('services.publish'));

        // Same reason the viewer does not have it: writing for the site and
        // reading strangers' contact details are different jobs.
        $this->assertTrue($writer->cannot('applications.view_any'));
    }

    #[Test]
    public function everybody_who_could_publish_it_is_told(): void
    {
        $writer = $this->writer();
        $admin = $this->userWithRoles('admin');
        $viewer = $this->userWithRoles('viewer');

        $page = $this->draft($writer);
        $page->requestReview(null, 'Listo', $writer);

        Notification::assertSentTo($admin, ReviewRequested::class);

        // Being told about work you could never act on is noise.
        Notification::assertNotSentTo($viewer, ReviewRequested::class);
        Notification::assertNotSentTo($writer, ReviewRequested::class);
    }

    /**
     * Naming somebody addresses the request, and then it is theirs alone —
     * otherwise "assigned to Ana" would mean nothing.
     */
    #[Test]
    public function naming_a_reviewer_tells_only_them(): void
    {
        $writer = $this->writer();
        $ana = $this->userWithRoles('admin');
        $other = $this->userWithRoles('admin');

        $page = $this->draft($writer);
        $page->requestReview($ana, null, $writer);

        Notification::assertSentTo($ana, ReviewRequested::class);
        Notification::assertNotSentTo($other, ReviewRequested::class);
    }

    #[Test]
    public function sending_it_back_tells_the_person_who_asked(): void
    {
        $writer = $this->writer();
        $admin = $this->userWithRoles('admin');

        $page = $this->draft($writer);
        $page->requestReview(null, null, $writer);

        $page->returnForChanges('Cambia el título, es el de otra página', $admin);

        $page->refresh();

        $this->assertFalse($page->isAwaitingReview());
        $this->assertSame(PageStatus::Draft, $page->status);

        Notification::assertSentTo($writer, ReviewReturned::class);

        $comment = $page->reviewComments()->first();
        $this->assertSame(ReviewEvent::Returned, $comment->event);
        $this->assertSame('Cambia el título, es el de otra página', $comment->body);
    }

    /**
     * The loop closes on the state, not on a button, so no route can leave
     * something live and still marked as waiting for somebody.
     */
    #[Test]
    public function publishing_closes_the_review_however_it_was_published(): void
    {
        $page = $this->draft();
        $page->requestReview();

        // Straight to the model, as the form and the table action both do.
        $page->update(['status' => PageStatus::Published, 'published_at' => now()]);

        $page->refresh();

        $this->assertFalse($page->isAwaitingReview());
        $this->assertNull($page->reviewer_id);
        $this->assertSame(
            ReviewEvent::Published,
            $page->reviewComments()->first()->event,
        );
    }

    /**
     * Scheduling is not publishing: a page whose date is next week is not on
     * the site yet, so nobody's review is over.
     */
    #[Test]
    public function a_future_date_does_not_close_the_review(): void
    {
        $page = $this->draft();
        $page->requestReview();

        $page->update([
            'status' => PageStatus::Published,
            'published_at' => now()->addWeek(),
        ]);

        $this->assertTrue($page->refresh()->isAwaitingReview());
    }

    #[Test]
    public function the_review_columns_stay_out_of_the_change_history(): void
    {
        $page = $this->draft();

        $page->requestReview(null, 'Nota');

        // The thread already says this in words. Repeating it as a diff would
        // bury the edits somebody actually came looking for.
        $fields = $page->revisions()->get()->flatMap(fn ($revision) => $revision->fields());

        $this->assertNotContains('review_requested_at', $fields);
        $this->assertNotContains('reviewer_id', $fields);
    }

    #[Test]
    public function an_unaddressed_review_is_in_everybodys_queue(): void
    {
        $admin = $this->userWithRoles('admin');
        $ana = $this->userWithRoles('admin');

        $this->draft()->requestReview();
        $this->draft()->requestReview($ana);

        // The unaddressed one, plus nothing addressed to somebody else.
        $this->assertSame(1, Page::query()->awaitingReviewBy($admin)->count());

        // Ana sees hers and the unaddressed one.
        $this->assertSame(2, Page::query()->awaitingReviewBy($ana)->count());
    }

    #[Test]
    public function it_works_the_same_for_projects_and_services(): void
    {
        $project = Project::factory()->create(['published_at' => null]);
        $service = Service::factory()->create(['is_published' => false, 'published_at' => null]);

        $project->requestReview();
        $service->requestReview();

        $this->assertTrue($project->refresh()->isAwaitingReview());
        $this->assertTrue($service->refresh()->isAwaitingReview());

        $project->update(['published_at' => now()]);
        $service->update(['is_published' => true, 'published_at' => now()]);

        $this->assertFalse($project->refresh()->isAwaitingReview());
        $this->assertFalse($service->refresh()->isAwaitingReview());
    }

    #[Test]
    public function a_comment_changes_nothing_but_is_recorded(): void
    {
        $page = $this->draft();
        $page->requestReview();

        $page->comment('¿La foto la tienes tú?');

        $this->assertTrue($page->refresh()->isAwaitingReview());
        $this->assertSame(
            ReviewEvent::Commented,
            $page->reviewComments()->first()->event,
        );
    }

    #[Test]
    public function the_health_check_finds_a_handover_nobody_answered(): void
    {
        $fresh = $this->draft();
        $fresh->requestReview();

        $stale = $this->draft();
        $stale->requestReview();
        $stale->forceFill(['review_requested_at' => now()->subDays(10)])->saveQuietly();

        $finding = app(HealthReport::class)->runAll()->firstWhere('key', 'stale-reviews');

        $this->assertInstanceOf(Finding::class, $finding);
        $this->assertSame(1, $finding->count);
    }

    #[Test]
    public function the_check_is_hidden_from_somebody_who_could_not_act_on_it(): void
    {
        $page = $this->draft();
        $page->requestReview();
        $page->forceFill(['review_requested_at' => now()->subDays(10)])->saveQuietly();

        $keys = fn (User $user) => app(HealthReport::class)->runFor($user)->pluck('key');

        $this->assertContains('stale-reviews', $keys($this->userWithRoles('admin')));
        $this->assertNotContains('stale-reviews', $keys($this->userWithRoles('viewer')));
    }
}