package api

import (
	"context"
	"datart/data"
	"datart/data/mongo"
	"datart/log"
	"errors"
	"fmt"
	"regexp"

	"github.com/gin-gonic/gin"
)

func (a *Api) PostUploadAlarm(ctx *gin.Context) {
	alarm, ip, err := a.checkAndGenUploadAlarmRequest(ctx)
	if err != nil {

		log.Error(err)

		ctx.JSON(200, gin.H{
			"code": 1,
			"msg":  "invalid param",
		})
		return
	}

	event, err := alarm.ConvertToEvent(ip)
	if err != nil {

		log.Error(err, fmt.Sprintf(" params: %v", alarm))

		ctx.JSON(200, gin.H{
			"code": 2,
			"msg":  "convert error",
		})
		return
	}

	err = mongo.InsertOneEvent(ctx.Request.Context(), event)
	if err != nil {

		log.Error(err, fmt.Sprintf(" params: %v", event))

		ctx.JSON(200, gin.H{
			"code": 3,
			"msg":  "insert error",
		})
		return
	}

	go func(e *mongo.Event) {
		if err := data.PublishEvent(context.Background(), e); err != nil {

			log.Error(err, fmt.Sprintf(" params: %v", e))
		}
	}(event)

	ctx.JSON(200, gin.H{
		"code": 0,
		"msg":  "success",
	})
}

func (a *Api) checkAndGenUploadAlarmRequest(ctx *gin.Context) (*mongo.Alarm, string, error) {
	alarm := new(mongo.Alarm)

	err := ctx.ShouldBindJSON(alarm)
	if err != nil {
		return nil, "", err
	}

	ok, err := regexp.MatchString(`ssu\d{3}`, alarm.DeviceNo)
	if err != nil {
		return nil, "", err
	}

	if !ok {
		return nil, "", errors.New("invalid device_no")
	}

	if alarm.AlarmCode < 1 || alarm.AlarmCode > 10 {
		return nil, "", errors.New("invalid alarm_code")
	}

	if alarm.AlarmStatus < 0 || alarm.AlarmStatus > 1 {
		return nil, "", errors.New("invalid alarm_status")
	}

	return alarm, ctx.RemoteIP(), nil
}