<?php

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Models\Material;
use Illuminate\Http\Request;

class MaterialController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index(Request $request)
    {
        if ($request->has('category_id')) {
            return Material::where('category_id', $request->category_id)->get();
        }
        return Material::all();
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request)
    {
        $validated = $request->validate([
            'category_id' => 'required|exists:categories,id',
            'title' => 'required|string|max:255',
            'author' => 'required|string|max:255',
            'description' => 'nullable|string',
            'cover_image_path' => 'nullable|string',
            'file_path' => 'required|string',
            'tags' => 'nullable|array',
        ]);

        $material = Material::create($validated);

        return response()->json($material, 201);
    }

    /**
     * Display the specified resource.
     */
    public function show(Material $material)
    {
        return $material;
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(Request $request, Material $material)
    {
        $validated = $request->validate([
            'category_id' => 'sometimes|required|exists:categories,id',
            'title' => 'sometimes|required|string|max:255',
            'author' => 'sometimes|required|string|max:255',
            'description' => 'nullable|string',
            'cover_image_path' => 'nullable|string',
            'file_path' => 'sometimes|required|string',
            'tags' => 'nullable|array',
        ]);

        $material->update($validated);

        return response()->json($material);
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Material $material)
    {
        $material->delete();

        return response()->json(null, 204);
    }
}