package org.linlinjava.litemall.admin.web;

import com.github.binarywang.wxpay.bean.request.WxPayRefundRequest;
import com.github.binarywang.wxpay.bean.result.WxPayRefundResult;
import com.github.binarywang.wxpay.exception.WxPayException;
import com.github.binarywang.wxpay.service.WxPayService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.linlinjava.litemall.admin.annotation.LoginAdmin;
import org.linlinjava.litemall.core.notify.NotifyService;
import org.linlinjava.litemall.core.notify.NotifyType;
import org.linlinjava.litemall.core.util.CharUtil;
import org.linlinjava.litemall.core.util.JacksonUtil;
import org.linlinjava.litemall.core.util.ResponseUtil;
import org.linlinjava.litemall.core.validator.Order;
import org.linlinjava.litemall.core.validator.Sort;
import org.linlinjava.litemall.db.domain.*;
import org.linlinjava.litemall.db.service.*;
import org.linlinjava.litemall.db.util.OrderUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.constraints.NotNull;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.linlinjava.litemall.admin.util.AdminResponseCode.*;

@RestController
@RequestMapping("/admin/order")
@Validated
public class AdminOrderController {
    private final Log logger = LogFactory.getLog(AdminOrderController.class);

    @Autowired
    private PlatformTransactionManager txManager;

    @Autowired
    private LitemallOrderGoodsService orderGoodsService;
    @Autowired
    private LitemallOrderService orderService;
    @Autowired
    private LitemallGoodsProductService productService;
    @Autowired
    private LitemallUserService userService;
    @Autowired
    private LitemallCommentService commentService;
    @Autowired
    private WxPayService wxPayService;
    @Autowired
    private NotifyService notifyService;

    @GetMapping("/list")
    public Object list(@LoginAdmin Integer adminId,
                       Integer userId, String orderSn,
                       @RequestParam(required = false) List<Short> orderStatusArray,
                       @RequestParam(defaultValue = "1") Integer page,
                       @RequestParam(defaultValue = "10") Integer limit,
                       @Sort @RequestParam(defaultValue = "add_time") String sort,
                       @Order @RequestParam(defaultValue = "desc") String order) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }
        List<LitemallOrder> orderList = orderService.querySelective(userId, orderSn, orderStatusArray, page, limit, sort, order);
        int total = orderService.countSelective(userId, orderSn, orderStatusArray, page, limit, sort, order);

        Map<String, Object> data = new HashMap<>();
        data.put("total", total);
        data.put("items", orderList);

        return ResponseUtil.ok(data);
    }

    @GetMapping("/detail")
    public Object detail(@LoginAdmin Integer adminId, @NotNull Integer id) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }

        LitemallOrder order = orderService.findById(id);
        List<LitemallOrderGoods> orderGoods = orderGoodsService.queryByOid(id);
        UserVo user = userService.findUserVoById(order.getUserId());
        Map<String, Object> data = new HashMap<>();
        data.put("order", order);
        data.put("orderGoods", orderGoods);
        data.put("user", user);

        return ResponseUtil.ok(data);
    }

    /**
     * 订单退款
     * <p>
     * 1. 检测当前订单是否能够退款;
     * 2. 微信退款操作;
     * 3. 设置订单退款确认状态；
     * 4. 订单商品库存回库。
     * <p>
     * TODO
     * 虽然接入了微信退款API，但是从安全角度考虑，建议开发者删除这里微信退款代码，采用以下两步走步骤：
     * 1. 管理员登录微信官方支付平台点击退款操作进行退款
     * 2. 管理员登录litemall管理后台点击退款操作进行订单状态修改和商品库存回库
     *
     * @param adminId 管理员ID
     * @param body    订单信息，{ orderId：xxx }
     * @return 订单退款操作结果
     */
    @PostMapping("refund")
    public Object refund(@LoginAdmin Integer adminId, @RequestBody String body) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        String refundMoney = JacksonUtil.parseString(body, "refundMoney");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }
        if(StringUtils.isEmpty(refundMoney)){
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        if (order.getActualPrice().compareTo(new BigDecimal(refundMoney)) != 0) {
            return ResponseUtil.badArgumentValue();
        }

        // 如果订单不是退款状态，则不能退款
        if (!order.getOrderStatus().equals(OrderUtil.STATUS_REFUND)) {
            return ResponseUtil.fail(ORDER_CONFIRM_NOT_ALLOWED, "订单不能确认收货");
        }

        // 微信退款
        WxPayRefundRequest wxPayRefundRequest = new WxPayRefundRequest();
        wxPayRefundRequest.setOutTradeNo(order.getOrderSn());
        wxPayRefundRequest.setOutRefundNo("refund_" + order.getOrderSn());
        // 元转成分
        Integer totalFee = order.getActualPrice().multiply(new BigDecimal(100)).intValue();
        wxPayRefundRequest.setTotalFee(totalFee);
        wxPayRefundRequest.setRefundFee(totalFee);

        WxPayRefundResult wxPayRefundResult = null;
        try {
            wxPayRefundResult = wxPayService.refund(wxPayRefundRequest);
        } catch (WxPayException e) {
            e.printStackTrace();
            return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
        }
        if(!wxPayRefundResult.getReturnCode().equals("SUCCESS")){
            logger.warn("refund fail: " +  wxPayRefundResult.getReturnMsg());
            return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
        }
        if(!wxPayRefundResult.getResultCode().equals("SUCCESS")){
            logger.warn("refund fail: " +  wxPayRefundResult.getReturnMsg());
            return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
        }

        // 开启事务管理
        DefaultTransactionDefinition def = new DefaultTransactionDefinition();
        def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
        TransactionStatus status = txManager.getTransaction(def);
        try {
            // 设置订单取消状态
            order.setOrderStatus(OrderUtil.STATUS_REFUND_CONFIRM);
            if (orderService.updateWithOptimisticLocker(order) == 0) {
                throw new Exception("更新数据已失效");
            }

            // 商品货品数量增加
            List<LitemallOrderGoods> orderGoodsList = orderGoodsService.queryByOid(orderId);
            for (LitemallOrderGoods orderGoods : orderGoodsList) {
                Integer productId = orderGoods.getProductId();
                Short number = orderGoods.getNumber();
                if (productService.addStock(productId, number) == 0) {
                    throw new Exception("商品货品库存增加失败");
                }
            }
        } catch (Exception ex) {
            txManager.rollback(status);
            logger.error("系统内部错误", ex);
            return ResponseUtil.fail(ORDER_REFUND_FAILED, "订单退款失败");
        }

        //TODO 发送邮件和短信通知，这里采用异步发送
        // 退款成功通知用户, 例如“您申请的订单退款 [ 单号:{1} ] 已成功，请耐心等待到账。”
        // 注意订单号只发后6位
        notifyService.notifySmsTemplate(order.getMobile(), NotifyType.REFUND, new String[]{order.getOrderSn().substring(8, 14)});

        txManager.commit(status);

        return ResponseUtil.ok();
    }

    /**
     * 发货
     * 1. 检测当前订单是否能够发货
     * 2. 设置订单发货状态
     *
     * @param adminId 管理员ID
     * @param body    订单信息，{ orderId：xxx, shipSn: xxx, shipChannel: xxx }
     * @return 订单操作结果
     * 成功则 { errno: 0, errmsg: '成功' }
     * 失败则 { errno: XXX, errmsg: XXX }
     */
    @PostMapping("ship")
    public Object ship(@LoginAdmin Integer adminId, @RequestBody String body) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        String shipSn = JacksonUtil.parseString(body, "shipSn");
        String shipChannel = JacksonUtil.parseString(body, "shipChannel");
        if (orderId == null || shipSn == null || shipChannel == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        // 如果订单不是已付款状态，则不能发货
        if (!order.getOrderStatus().equals(OrderUtil.STATUS_PAY)) {
            return ResponseUtil.fail(ORDER_CONFIRM_NOT_ALLOWED, "订单不能确认收货");
        }

        order.setOrderStatus(OrderUtil.STATUS_SHIP);
        order.setShipSn(shipSn);
        order.setShipChannel(shipChannel);
        order.setShipTime(LocalDateTime.now());
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return ResponseUtil.updatedDateExpired();
        }

        //TODO 发送邮件和短信通知，这里采用异步发送
        // 发货会发送通知短信给用户:          *
        // "您的订单已经发货，快递公司 {1}，快递单 {2} ，请注意查收"
        notifyService.notifySmsTemplate(order.getMobile(), NotifyType.SHIP, new String[]{shipChannel, shipSn});

        return ResponseUtil.ok();
    }


    /**
     * 回复订单商品
     *
     * @param adminId 管理员ID
     * @param body    订单信息，{ orderId：xxx }
     * @return 订单操作结果
     * 成功则 { errno: 0, errmsg: '成功' }
     * 失败则 { errno: XXX, errmsg: XXX }
     */
    @PostMapping("reply")
    public Object reply(@LoginAdmin Integer adminId, @RequestBody String body) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }

        Integer commentId = JacksonUtil.parseInteger(body, "commentId");
        if (commentId == null || commentId == 0) {
            return ResponseUtil.badArgument();
        }
        // 目前只支持回复一次
        if (commentService.findById(commentId) != null) {
            return ResponseUtil.fail(ORDER_REPLY_EXIST, "订单商品已回复！");
        }
        String content = JacksonUtil.parseString(body, "content");
        if (StringUtils.isEmpty(content)) {
            return ResponseUtil.badArgument();
        }
        // 创建评价回复
        LitemallComment comment = new LitemallComment();
        comment.setType((byte) 2);
        comment.setValueId(commentId);
        comment.setContent(content);
        comment.setUserId(0);                 // 评价回复没有用
        comment.setStar((short) 0);           // 评价回复没有用
        comment.setHasPicture(false);        // 评价回复没有用
        comment.setPicUrls(new String[]{});  // 评价回复没有用
        commentService.save(comment);

        return ResponseUtil.ok();
    }

}
