<?php

declare(strict_types=1);

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Http\Requests\Admin\CategoryRequest;
use App\Models\Category;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class CategoryController extends Controller
{
    public function index(Request $request): View
    {
        $items = Category::query()
            ->when($request->filled('q'), function ($query) use ($request): void {
                $keyword = (string) $request->string('q');
                $query->where('name', 'like', "%{$keyword}%")
                    ->orWhere('slug', 'like', "%{$keyword}%")
                    ->orWhere('description', 'like', "%{$keyword}%");
            })
            ->when($request->filled('type'), function ($query) use ($request): void {
                $query->where('type', (string) $request->string('type'));
            })
            ->orderBy('type')
            ->orderBy('name')
            ->paginate(30)
            ->withQueryString();

        return view('admin.categories.index', [
            'items' => $items,
            'filters' => $request->only(['q', 'type']),
            'typeOptions' => $this->typeOptions(),
        ]);
    }

    public function create(): View
    {
        return view('admin.categories.form', [
            'item' => new Category(),
            'submitRoute' => route('admin.categories.store'),
            'method' => 'POST',
            'typeOptions' => $this->typeOptions(),
        ]);
    }

    public function store(CategoryRequest $request): RedirectResponse
    {
        $data = $request->validated();
        $data['is_active'] = (bool) ($data['is_active'] ?? false);

        $category = Category::query()->create($data);

        return redirect()->route('admin.categories.edit', $category)->with('status', '分类已创建');
    }

    public function edit(Category $category): View
    {
        return view('admin.categories.form', [
            'item' => $category,
            'submitRoute' => route('admin.categories.update', $category),
            'method' => 'PUT',
            'typeOptions' => $this->typeOptions(),
        ]);
    }

    public function update(CategoryRequest $request, Category $category): RedirectResponse
    {
        $data = $request->validated();
        $data['is_active'] = (bool) ($data['is_active'] ?? false);

        $category->fill($data);
        $category->save();

        return redirect()->route('admin.categories.edit', $category)->with('status', '分类已更新');
    }

    /**
     * @return array<int, string>
     */
    private function typeOptions(): array
    {
        $defaults = ['tool', 'model', 'news', 'guide'];
        $existing = Category::query()->distinct()->pluck('type')->filter()->values()->all();

        return array_values(array_unique([...$defaults, ...$existing]));
    }
}