package com.flower.admin;

import com.flower.common.ApiResponse;
import com.flower.order.OrderRepository;
import com.flower.security.AdminOnly;
import com.flower.user.UserRepository;
import lombok.Data;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.math.BigDecimal;

@RestController
@RequestMapping("/api/admin/dashboard")
@AdminOnly
public class AdminDashboardController {
    private final OrderRepository orderRepository;
    private final UserRepository userRepository;

    public AdminDashboardController(OrderRepository orderRepository, UserRepository userRepository) {
        this.orderRepository = orderRepository;
        this.userRepository = userRepository;
    }

    @GetMapping
    public ApiResponse<DashboardStats> stats() {
        long totalOrders = orderRepository.count();
        long totalUsers = userRepository.count();
        BigDecimal totalSales = orderRepository.findAll().stream()
                .filter(order -> "PAID".equals(order.getStatus()) || "SHIPPED".equals(order.getStatus())
                        || "COMPLETED".equals(order.getStatus()))
                .map(order -> order.getTotalAmount() == null ? BigDecimal.ZERO : order.getTotalAmount())
                .reduce(BigDecimal.ZERO, BigDecimal::add);
        DashboardStats stats = new DashboardStats();
        stats.setTotalOrders(totalOrders);
        stats.setTotalUsers(totalUsers);
        stats.setTotalSales(totalSales);
        return ApiResponse.ok(stats);
    }

    @Data
    public static class DashboardStats {
        private long totalOrders;
        private long totalUsers;
        private BigDecimal totalSales;
    }
}