<?php

namespace App\Http\Controllers;

use App\Enums\PostStatus;
use App\Models\Category;
use App\Models\Post;
use App\Models\Tag;
use Illuminate\Contracts\View\View;
use Illuminate\Http\Response;

class BlogController extends Controller
{
    public function index(): View
    {
        $posts = Post::published()
            ->with(['category', 'tags', 'user'])
            ->latest('published_at')
            ->paginate(10);

        return view('blog.index', [
            'posts' => $posts,
            'title' => config('app.name').' — AI Tools Directory & Blog for Developers',
            'description' => 'Discover and compare AI tools, plus in-depth articles on AI-assisted development, automation, and building with AI agents.',
            'canonical' => route('blog.index'),
        ]);
    }

    public function show(Post $post): View
    {
        abort_unless($post->status === PostStatus::Published && $post->published_at?->isPast(), 404);

        $post->load(['category', 'tags', 'user']);

        return view('blog.show', [
            'post' => $post,
            'title' => $post->meta_title ?: $post->title,
            'description' => $post->meta_description ?: $post->excerpt_or_summary,
            'canonical' => route('blog.show', $post),
            'image' => $post->featured_image ? asset('storage/'.$post->featured_image) : null,
            'type' => 'article',
        ]);
    }

    public function category(Category $category): View
    {
        $categoryIds = $category->children()->pluck('id')->push($category->id);

        $posts = Post::published()
            ->whereIn('category_id', $categoryIds)
            ->with(['category', 'tags', 'user'])
            ->latest('published_at')
            ->paginate(10);

        return view('blog.category', [
            'category' => $category,
            'posts' => $posts,
            'title' => $category->meta_title ?: $category->name.' — '.config('app.name'),
            'description' => $category->meta_description ?: $category->description,
            'canonical' => route('blog.category', $category),
        ]);
    }

    public function tag(Tag $tag): View
    {
        $posts = $tag->posts()
            ->published()
            ->with(['category', 'tags', 'user'])
            ->latest('published_at')
            ->paginate(10);

        return view('blog.tag', [
            'tag' => $tag,
            'posts' => $posts,
            'title' => '#'.$tag->name.' — '.config('app.name'),
            'description' => 'Posts tagged with '.$tag->name.'.',
            'canonical' => route('blog.tag', $tag),
        ]);
    }

    public function feed(): Response
    {
        $posts = Post::published()
            ->with('user')
            ->latest('published_at')
            ->limit(20)
            ->get();

        $xml = view('blog.feed', ['posts' => $posts])->render();

        return response($xml, 200)->header('Content-Type', 'application/rss+xml; charset=UTF-8');
    }
}