<?php

namespace App\Http\Controllers;

use App\Models\EdiBand;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Routing\Controller as BaseController;

class EdiBandController extends BaseController
{
    use AuthorizesRequests, ValidatesRequests;

    public function __construct()
    {
        $this->middleware('auth:sanctum')->except(['index', 'show']);
    }

    public function index(Request $request): JsonResponse
    {
        $perPage = (int) $request->get('per_page', 100);

        $items = EdiBand::query()
            ->with('bands')        // eager load pokud chceš mít vazby
            ->orderBy('value')
            ->paginate($perPage);

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

    public function store(Request $request): JsonResponse
    {
        $this->authorize('create', EdiBand::class);

        $data = $request->validate([
            'value'      => ['required', 'string', 'max:255'],
        ]);

        $relations = $request->validate([
            'band_ids'   => ['sometimes', 'array'],
            'band_ids.*' => ['integer', 'exists:bands,id'],
        ]);

        $item = EdiBand::create($data);

        if (array_key_exists('band_ids', $relations)) {
            $item->bands()->sync($relations['band_ids']);
        }

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

    public function show(EdiBand $edi_band): JsonResponse
    {
        $edi_band->load('bands');

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

    public function update(Request $request, EdiBand $edi_band): JsonResponse
    {
        $this->authorize('update', $edi_band);

        $data = $request->validate([
            'value' => ['sometimes', 'string', 'max:255'],
        ]);

        $relations = $request->validate([
            'band_ids'   => ['sometimes', 'array'],
            'band_ids.*' => ['integer', 'exists:bands,id'],
        ]);

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

        if (array_key_exists('band_ids', $relations)) {
            $edi_band->bands()->sync($relations['band_ids']);
        }

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

    public function destroy(EdiBand $edi_band): JsonResponse
    {
        $this->authorize('delete', $edi_band);

        $edi_band->delete();

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