package se.bilhalsning.service;

import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import se.bilhalsning.entity.Order;
import se.bilhalsning.entity.User;
import se.bilhalsning.repository.UserRepository;

import java.util.UUID;

@Service
@RequiredArgsConstructor
public class OrderNotificationService {

    private final UserRepository userRepository;
    private final EmailService emailService;

    @Value("${app.public-base-url:http://localhost:3000}")
    private String publicBaseUrl;

    public void notifyOrderProcessing(Order order) {
        String email = resolveCustomerEmail(order);
        if (email.isBlank()) {
            return;
        }
        emailService.sendOrderProcessingEmail(
                email,
                order.getPlate(),
                ordersPageUrl());
    }

    public void notifyOrderSent(Order order, String trackingId) {
        String email = resolveCustomerEmail(order);
        if (email.isBlank()) {
            return;
        }
        String trackingUrl = "https://www.postnord.se/verktyg/spara/?id=" + trackingId;
        emailService.sendOrderSentEmail(email, order.getPlate(), trackingId, trackingUrl);
    }

    public void notifyOrderFailed(Order order) {
        String email = resolveCustomerEmail(order);
        if (email.isBlank()) {
            return;
        }
        emailService.sendOrderFailedEmail(email, order.getPlate(), ordersPageUrl());
    }

    private String resolveCustomerEmail(Order order) {
        if (order.getUser() != null && order.getUser().getEmail() != null) {
            return order.getUser().getEmail();
        }
        UUID userId = order.getUserId();
        if (userId == null) {
            return "";
        }
        return userRepository.findById(userId)
                .map(User::getEmail)
                .orElse("");
    }

    private String ordersPageUrl() {
        String base = publicBaseUrl.endsWith("/")
                ? publicBaseUrl.substring(0, publicBaseUrl.length() - 1)
                : publicBaseUrl;
        return base + "/mina-bestallningar";
    }
}