<?php

namespace App\Http\Controllers\Api\Posts;

use App\Http\Controllers\Controller;
use App\Http\Requests\Posts\CreatePostRequest;
use App\Http\Requests\Posts\UpdatePostRequest;
use App\Models\Post;
use App\Services\Posts\PostFeedService;
use App\Services\Posts\PostService;
use Carbon\Carbon;
use Illuminate\Http\JsonResponse;
use Illuminate\Support\Facades\Gate;
use Illuminate\Support\Facades\RateLimiter;

class PostController extends Controller
{
    public function __construct(
        private PostService     $postService,
        private PostFeedService $feedService,
    ) {}

    // ─────────────────────────────────────────────────────────────────────────
    // Create
    // ─────────────────────────────────────────────────────────────────────────

    public function store(CreatePostRequest $request): JsonResponse
    {
        $user = $request->user();

        // Rate limit: 10 post creations per hour
        $key = 'create_post:' . $user->id;
        if (RateLimiter::tooManyAttempts($key, 10)) {
            $seconds = RateLimiter::availableIn($key);
            return response()->json([
                'message' => "You're posting too quickly. Please wait {$seconds} seconds.",
            ], 429);
        }
        RateLimiter::hit($key, 3600);

        Gate::authorize('create', Post::class);

        $post = $this->postService->createPost(
            user:         $user,
            type:         $request->input('type', Post::TYPE_TEXT),
            visibility:   $request->input('visibility', Post::VISIBILITY_PUBLIC),
            body:         $request->input('body'),
            targets:      $request->input('targets', []),
            linkPreview:  $request->input('link_preview'),
            taggedUsers:  $request->input('tagged_users'),            publishAt:   $request->filled('publish_at') ? Carbon::parse($request->input('publish_at')) : null,        );

        $post->load(['user', 'user.profile', 'targets', 'targets.artwork', 'targets.artwork.user', 'targets.artwork.user.profile', 'reactions']);

        return response()->json([
            'post' => $this->feedService->formatPost($post, $user->id),
        ], 201);
    }

    // ─────────────────────────────────────────────────────────────────────────
    // Update
    // ─────────────────────────────────────────────────────────────────────────

    public function update(UpdatePostRequest $request, int $id): JsonResponse
    {
        $post = Post::findOrFail($id);
        Gate::authorize('update', $post);

        $updated = $this->postService->updatePost(
            post:       $post,
            body:       $request->input('body'),
            visibility: $request->input('visibility'),
        );

        return response()->json([
            'post' => $this->feedService->formatPost($updated->load(['user', 'user.profile', 'targets', 'targets.artwork', 'targets.artwork.user', 'targets.artwork.user.profile', 'reactions']), $request->user()?->id),
        ]);
    }

    // ─────────────────────────────────────────────────────────────────────────
    // Delete
    // ─────────────────────────────────────────────────────────────────────────

    public function destroy(int $id): JsonResponse
    {
        $post = Post::findOrFail($id);
        Gate::authorize('delete', $post);

        $this->postService->deletePost($post);

        return response()->json(['message' => 'Post deleted.']);
    }
}