<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Article;
use App\Models\Category;
use Illuminate\Http\Request;
use Illuminate\View\View;

class ArticleController extends Controller
{
    public function index(): View
    {
        $articles = Article::with('category')->orderByDesc('created_at')->paginate(20);

        return view('admin.articles.index', compact('articles'));
    }

    public function create(): View
    {
        $categories = Category::ofType('article')->orderBy('sort')->orderBy('name')->get();

        return view('admin.articles.form', ['article' => null, 'categories' => $categories]);
    }

    public function store(Request $request)
    {
        $data = $request->validate([
            'category_id' => ['nullable', 'exists:categories,id'],
            'title' => ['required', 'string', 'max:160'],
            'slug' => ['required', 'string', 'max:160', 'unique:articles,slug'],
            'summary' => ['nullable', 'string', 'max:255'],
            'body' => ['nullable', 'string'],
            'cover' => ['nullable', 'string', 'max:255'],
            'author' => ['nullable', 'string', 'max:60'],
            'status' => ['required', 'in:approved,draft'],
            'template' => ['required', 'in:standard,tech,feature'],
            'seo_title' => ['nullable', 'string', 'max:160'],
            'seo_description' => ['nullable', 'string', 'max:255'],
            'published_at' => ['nullable', 'date'],
        ]);

        if (! empty($data['body'])) {
            $data['body'] = \Purifier::clean($data['body'], 'article');
        }

        if (empty($data['published_at']) && $data['status'] === 'approved') {
            $data['published_at'] = now();
        }

        Article::create($data);

        return redirect()->route('admin.articles.index')->with('success', '文章已创建');
    }

    public function edit(Article $article): View
    {
        $categories = Category::ofType('article')->orderBy('sort')->orderBy('name')->get();

        return view('admin.articles.form', compact('article', 'categories'));
    }

    public function update(Request $request, Article $article)
    {
        $data = $request->validate([
            'category_id' => ['nullable', 'exists:categories,id'],
            'title' => ['required', 'string', 'max:160'],
            'slug' => ['required', 'string', 'max:160', 'unique:articles,slug,' . $article->id],
            'summary' => ['nullable', 'string', 'max:255'],
            'body' => ['nullable', 'string'],
            'cover' => ['nullable', 'string', 'max:255'],
            'author' => ['nullable', 'string', 'max:60'],
            'status' => ['required', 'in:approved,draft'],
            'template' => ['required', 'in:standard,tech,feature'],
            'seo_title' => ['nullable', 'string', 'max:160'],
            'seo_description' => ['nullable', 'string', 'max:255'],
            'published_at' => ['nullable', 'date'],
        ]);

        if (! empty($data['body'])) {
            $data['body'] = \Purifier::clean($data['body'], 'article');
        }

        if (empty($data['published_at']) && $data['status'] === 'approved' && $article->published_at === null) {
            $data['published_at'] = now();
        }

        $article->update($data);

        return redirect()->route('admin.articles.index')->with('success', '文章已更新');
    }

    public function destroy(Article $article)
    {
        $article->delete();

        return redirect()->route('admin.articles.index')->with('success', '文章已删除');
    }
}