<?php

namespace App\Http\Controllers\Api;

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

class StockRoomController extends Controller
{

    public function store(Request $request)
    {
        $data = $request->validate([
            'room_symbol'          => 'required|string',
            'room_name'            => 'required|string',
            'lines'                => 'required|integer|min:1',
            'racks_per_line'       => 'required|integer|min:1',
            'shelves_per_rack'     => 'required|integer|min:1',
            'positions_per_shelf'  => 'required|integer|min:1',
        ]);

        \DB::transaction(function() use($data) {
            $room = StockRoom::create([
                'room_symbol' => $data['room_symbol'],
                'room_name'   => $data['room_name'],
            ]);

            for ($i = 1; $i <= $data['lines']; $i++) {
                $line = $room->lines()->create([
                    'line_symbol' => $i,
                    'line_name'   => 'Line ' . $i,
                ]);
                for ($j = 1; $j <= $data['racks_per_line']; $j++) {
                    $rack = $line->racks()->create([
                        'rack_symbol' => $j,
                        'rack_name'   => 'Rack ' . $j,
                    ]);
                    for ($k = 1; $k <= $data['shelves_per_rack']; $k++) {
                        $shelf = $rack->shelves()->create([
                            'shelf_symbol' => $k,
                            'shelf_name'   => 'Shelf ' . $k,
                        ]);
                        for ($p = 1; $p <= $data['positions_per_shelf']; $p++) {
                            $shelf->positions()->create([
                                'position_symbol' => $p,
                                'position_name'   => 'Position ' . $p,
                                'capacity'        => 0,
                            ]);
                        }
                    }
                }
            }
        });

        return response()->json(['message' => 'Room created'], 201);
    }

    public function show(StockRoom $room)
    {
        $room->load('lines.racks.shelves.positions.sections');
        return response()->json($room);
    }

    public function update(Request $request, StockRoom $room)
    {
        // You can use a single JSON payload with full tree edits, or
        // issue individual calls per entity (lines, racks, etc.)
        // For brevity, let’s assume front-end will call your existing modals
        // to update positions or sections via your other APIs.
        $room->update($request->only('room_symbol','room_name'));
        return response()->json(['message'=>'Room updated']);
    }

    public function destroy(StockRoom $room)
    {
        $room->delete();
        return response()->json(['message'=>'Room deleted']);
    }
    public function getList()
    {
        $rooms = StockRoom::with(['layout', 'lines.racks.shelves.positions.sections'])->get();
        return response()->json(['rooms' => $rooms]);
    }
}