package space.anyi.controller.admin;

import space.anyi.entity.*;
import space.anyi.service.*;
import space.anyi.util.Converter;
import space.anyi.entity.vo.OrderVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import space.anyi.entity.dto.OrderSearchCriteria;
import java.util.List;

@Controller
@RequestMapping("/admin")
public class AdminOrderController {

    @Autowired private OrderService orderService;
    @Autowired private OrderItemService orderItemService;
    @Autowired private OrderTrackingService orderTrackingService;
    @Autowired private UserService userService;

    @GetMapping("/order")
    public ModelAndView list(@RequestParam(required = false) String status,
                             @RequestParam(defaultValue = "1") Integer page) {
        ModelAndView mv = new ModelAndView("admin/order");
        OrderSearchCriteria criteria = new OrderSearchCriteria();
        criteria.setStatus(status);
        List<OrderVO> orderVOs = Converter.toOrderVOList(orderService.findAll(criteria, page, 10));
        for (OrderVO vo : orderVOs) {
            if (vo.getUserId() != null) {
                User user = userService.findById(vo.getUserId());
                if (user != null) {
                    vo.setUsername(user.getUsername());
                }
            }
            List<OrderItem> items = orderItemService.findByOrderId(vo.getId());
            vo.setItemCount(items != null ? items.size() : 0);
        }
        mv.addObject("orders", orderVOs);
        mv.addObject("status", status);
        mv.addObject("page", page);
        return mv;
    }

    @GetMapping("/order/{id}")
    public ModelAndView detail(@PathVariable Integer id) {
        ModelAndView mv = new ModelAndView("admin/orderDetail");
        Orders order = orderService.findById(id);
        OrderVO orderVO = Converter.toOrderVO(order);
        if (order.getUserId() != null) {
            User user = userService.findById(order.getUserId());
            if (user != null) {
                orderVO.setUsername(user.getUsername());
            }
        }
        mv.addObject("order", orderVO);
        mv.addObject("items", Converter.toOrderItemVOList(orderItemService.findByOrderId(order.getId())));
        mv.addObject("tracking", Converter.toOrderTrackingVOList(orderTrackingService.findByOrderId(order.getId())));
        return mv;
    }

    @PostMapping("/order/updateStatus")
    public String updateStatus(@RequestParam Integer id, @RequestParam String status,
                               @RequestParam(required = false) String remark,
                               HttpSession session, RedirectAttributes attr) {
        Admin admin = (Admin) session.getAttribute("admin");
        String operator = admin != null ? admin.getUsername() : "系统";
        orderService.updateStatus(id, status, operator, remark);
        attr.addFlashAttribute("success", "状态已更新");
        return "redirect:/admin/order/" + id;
    }
}