package timeslicequery

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/go-kratos/kratos/v2/log"
	"github.com/go-kratos/kratos/v2/transport/http"
	"time"
	"voucher/internal/biz/do"
	"voucher/internal/pkg/timeslice"
)

func (v *Query) Push(ctx http.Context, req *do.RdsWechatQuery) (string, error) {

	if req.StartTime == "" || req.EndTime == "" {
		return "", fmt.Errorf("时间参数不能为空")
	}

	queue := v.bc.RdsMQ.GetWechatTimeSliceQuery()
	if queue == nil {
		return "", fmt.Errorf("队列不存在")
	}

	if queue.Name == "" {
		return "", fmt.Errorf("队列不存在")
	}

	if queue.IsOpen == false {
		return "", fmt.Errorf("队列未开启")
	}

	if req.ProductNo != "" {
		_, err := v.productRepo.GetByProductNo(ctx, req.ProductNo)
		if err != nil {
			return "", err
		}
	}

	b, err := json.Marshal(req)
	if err != nil {
		return "", err
	}

	strMsg := string(b)

	uid := v.uid(strMsg)
	if v.Get(uid) {
		return "", fmt.Errorf("此台服务队列正在处理中,%s-%s,ip:%s", uid, strMsg, ctx.Header().Get("X-Forwarded-For"))
	}

	v.Add(uid)

	_, err = v.rdb.Rdb.RPush(ctx, queue.Name, strMsg).Result()
	if err != nil {
		v.Remove(uid)
		return "", fmt.Errorf("添加到队列失败:%v", err)
	}

	return strMsg, nil
}

func (v *Query) getManager(msg string) (*timeslice.Manager, error) {

	var req *do.RdsWechatQuery

	if err := json.Unmarshal([]byte(msg), &req); err != nil {
		return nil, err
	}

	if req.StartTime == "" || req.EndTime == "" {
		return nil, fmt.Errorf("时间参数不能为空")
	}

	start, err := time.Parse(time.DateTime, req.StartTime)
	if err != nil {
		return nil, err
	}
	end, err := time.Parse(time.DateTime, req.EndTime)
	if err != nil {
		return nil, err
	}

	manager := &timeslice.Manager{
		StartTime:      start,
		EndTime:        end,
		ProductNo:      req.ProductNo,
		GoNum:          timeslice.DefaultGoNum,          // 协程数量
		TimeSliceHours: timeslice.DefaultTimeSliceHours, // 时间间隔
	}

	if req.GoNum > 0 {
		manager.GoNum = req.GoNum
	}

	if req.TimeSliceHours > 0 {
		manager.TimeSliceHours = req.TimeSliceHours
	}

	return manager, nil
}

func (v *Query) Consumer(ctx context.Context, msg string) error {

	defer v.Remove(v.uid(msg))

	req, err := v.getManager(msg)
	if err != nil {
		log.Errorf("微信券查询,前置参数处理失败,msg:%s,err:%v", msg, err)
		return nil
	}

	if err = v.execute(ctx, req); err != nil {
		log.Errorf("微信券查询,失败,msg:%s,err:%v", msg, err)
	}

	return nil
}