<?php

namespace App\Http\Controllers\Api;

use App\Services\PriceCalculatorService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\ValidationException;

class PricingController
{
    public function __construct(protected PriceCalculatorService $calculator) {}

    public function calculate(Request $request): JsonResponse
    {
        try {
            $validated = $request->validate([
                'direction' => ['required', 'string', 'in:Outbound,Inbound,export,import'],
                'type' => ['required', 'string', 'in:DOC_NORMAL,DOC_ECONOMY,PARCEL,DOCUMENT,NON DOC'],
                'country_iso' => ['required', 'string', 'size:2'],
                'weight' => ['required', 'numeric', 'min:0'],
                'volumetric_weight' => ['required', 'numeric', 'min:0'],
                'extra_service' => ['nullable', 'numeric', 'min:0'],
                'packing_cost' => ['nullable', 'numeric', 'min:0'],
                'domestic_pickup' => ['nullable', 'numeric', 'min:0'],
                'domestic_delivery' => ['nullable', 'numeric', 'min:0'],
                'warehousing_cost' => ['nullable', 'numeric', 'min:0'],
                'discount_code' => ['nullable', 'string', 'max:50'],
            ]);
        } catch (ValidationException $e) {
            return response()->json([
                'success' => false,
                'message' => 'Validation failed',
                'errors' => $e->errors(),
            ], 422);
        }

        try {
            $result = $this->calculator->calculate($validated);
            return response()->json($result);
        } catch (\InvalidArgumentException $e) {
            return response()->json([
                'success' => false,
                'message' => $e->getMessage(),
            ], 422);
        } catch (\RuntimeException $e) {
            // خطاهای «زون یافت نشد» یا «نرخ یافت نشد» — خطای کسب‌وکار، نه سرور
            return response()->json([
                'success' => false,
                'message' => $e->getMessage(),
            ], 400);
        } catch (\Throwable $e) {
            report($e);
            return response()->json([
                'success' => false,
                'message' => 'خطای داخلی سرور هنگام محاسبه قیمت.',
            ], 500);
        }
    }
}