package com.paymentlink.service;

import org.springframework.stereotype.Service;

@Service
public class ShippingService {

    /**
     * Calculate shipping cost based on method and country
     */
    public long calculateShippingCost(String method, String country) {
        if (method == null || method.isEmpty()) {
            method = "standard";
        }

        // Base rates in cents
        long baseRate = switch (method.toLowerCase()) {
            case "express" -> 2000; // $20
            case "overnight" -> 3500; // $35
            default -> 1000; // $10 for standard
        };

        // International shipping surcharge
        if (country != null && !country.equals("US")) {
            baseRate += 1500; // $15 surcharge
        }

        return baseRate;
    }

    /**
     * Get available shipping methods
     */
    public String[] getAvailableShippingMethods() {
        return new String[]{"standard", "express", "overnight"};
    }

    /**
     * Validate shipping method
     */
    public boolean isValidShippingMethod(String method) {
        if (method == null) return false;
        String lower = method.toLowerCase();
        return lower.equals("standard") || lower.equals("express") || lower.equals("overnight");
    }
}