<?php

namespace App\Http\Controllers\Admin;

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

class NeighborStationController extends Controller
{
    // 一覧表示
   public function list(Request $request)
{
    $sort = $request->input('sort', 'station_id');
    $sort_type = $request->input('sort_type', 'asc');

    $allowedSorts = ['station_id', 'park_id', 'station_neighbor_station', 'station_name_ruby', 'station_route_name'];
    if (!in_array($sort, $allowedSorts)) {
        $sort = 'station_id';
    }

    if (!in_array($sort_type, ['asc', 'desc'])) {
        $sort_type = 'asc';
    }

    $stations = NeighborStation::select([
        'station_id',
        'station_neighbor_station',
        'station_name_ruby',
        'station_route_name',
        // 'station_latitude',
        // 'station_longitude',
        'park_id'
    ])->orderBy($sort, $sort_type)->paginate(20);

    return view('admin.neighbor_stations.list', compact('stations', 'sort', 'sort_type'));
}


    // 新規登録画面と登録処理
    public function add(Request $request)
    {
        if ($request->isMethod('post')) {
            $validated = $request->validate([
                'station_neighbor_station' => 'required|string|max:255',
                'station_name_ruby' => 'nullable|string|max:255',
                'station_route_name' => 'nullable|string|max:255',
                'park_id' => 'nullable|integer',
                'operator_id' => 'nullable|integer',
            ]);

            NeighborStation::create($validated);
            return redirect()->route('neighbor_stations')->with('success', '近傍駅が登録されました');
        }

        return view('admin.neighbor_stations.add');
    }

    // 編集画面・更新処理
    public function edit(Request $request, $id)
    {
        $station = NeighborStation::findOrFail($id);

        if ($request->isMethod('post')) {
            $validated = $request->validate([
                'station_neighbor_station' => 'required|string|max:255',
                'station_name_ruby' => 'nullable|string|max:255',
                'station_route_name' => 'nullable|string|max:255',
                'park_id' => 'nullable|integer',
                'operator_id' => 'nullable|integer',
            ]);

            $station->update($validated);
            return redirect()->route('neighbor_stations')->with('success', '更新しました');
        }

        return view('admin.neighbor_stations.edit', compact('station'));
    }

    // 詳細表示
    public function info($id)
    {
        $station = NeighborStation::findOrFail($id);
        return view('admin.neighbor_stations.info', compact('station'));
    }

    // 削除処理
    public function delete(Request $request)
    {
        $ids = $request->input('pk');  // ← 接收复数 checkbox 名称 pk[]

        if (!empty($ids)) {
            NeighborStation::destroy($ids);  // 一次性删除多个
            return redirect()->route('neighbor_stations')->with('success', '削除しました');
        }

        return redirect()->route('neighbor_stations')->with('error', '削除対象が見つかりません');
    }


    // CSVインポート（仮）
    public function import(Request $request)
    {
        // TODO: 実装
        return redirect()->route('neighbor_stations')->with('info', 'CSVインポートは未実装です');
    }

    // CSVエクスポート（仮）
    public function export()
    {
        // TODO: 実装
        return response()->streamDownload(function () {
            echo "id,station_neighbor_station,station_name_ruby,station_route_name,park_id,operator_id\n";
            foreach (NeighborStation::all() as $station) {
                echo "{$station->id},{$station->station_neighbor_station},{$station->station_name_ruby},{$station->station_route_name},{$station->park_id},{$station->operator_id}\n";
            }
        }, 'neighbor_stations.csv');
    }
}