package handler

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"io"
	"net/http"
	"os"
	"strconv"
	"time"
	"videoplayer/dao"
	"videoplayer/proto"
	"videoplayer/service"
	"videoplayer/worker"
)

type SetRedisReq struct {
	Option string `json:"option" form:"option"`
	Key    string `json:"key" form:"key"`
	Value  string `json:"value" form:"value"`
	Expire int    `json:"expire" form:"expire"`
}

type SetDeviceStatusReq struct {
	ID     string `json:"id" form:"id"`         //设备编码
	Status string `json:"status" form:"status"` //设备状态
}

func SetUpToolGroup(router *gin.Engine) {
	toolGroup := router.Group("/tool")
	toolGroup.POST("/set_redis", SetRedis)
	toolGroup.POST("/get_redis", GetRedis)

	//文件上传、下载
	toolGroup.POST("/upload", UploadFile)
	toolGroup.GET("/download", DownloadFile)
	//文件管理
	toolGroup.POST("/file_del", DelFile)
	//服务器、设备状态接口
	toolGroup.POST("/monitor", SetDeviceStatusV2)
}

func SetDeviceStatusV2(c *gin.Context) {
	// TODO
	var req SetDeviceStatusReq
	if err := c.ShouldBind(&req); err != nil {
		c.JSON(200, gin.H{"code": 400, "message": "参数错误"})
		return
	} else {
		token := c.Request.Header.Get("token")
		if token == "" {
			c.JSON(200, gin.H{"code": 401, "message": "token为空"})
			return
		}
		devices := worker.GetRedisSetMembers(token)
		if len(devices) == 0 {
			c.JSON(200, gin.H{"code": 402, "message": "设备为空"})
			return
		}
		for _, v := range devices {
			if v == req.ID {
				// 继续处理请求
				worker.SetRedisWithExpire("monitor_"+req.ID, "1", time.Second*300)
				c.JSON(200, gin.H{"code": 0, "message": "success"})
				return
			}
		}
		c.JSON(200, gin.H{"code": 402, "message": "设备不存在"})
	}

}

func DelFile(c *gin.Context) {
	//先查看是否有权限
	id, _ := c.Get("id")
	id1 := int(id.(float64))

	file_id, _ := strconv.Atoi(c.PostForm("id"))

	file_ := dao.FindFileByID(file_id, id1)
	if file_.ID == 0 {
		c.JSON(http.StatusOK, gin.H{"error": "file not found", "code": proto.FileNotFound, "message": "failed"})
		return
	}
	//删除文件
	err := os.Remove(file_.FilePath + "/" + file_.FileStoreName)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"error": "delete file failed", "code": proto.DeleteFileFailed, "message": "failed"})
		return
	}
	//删除文件信息
	if res := dao.DeleteFileById(file_id); !res {
		c.JSON(http.StatusOK, gin.H{"error": "delete file info failed", "code": proto.DeleteFileInfoFailed, "message": "failed"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": proto.SuccessCode, "message": "success"})

}

func UploadFile(c *gin.Context) {
	//先查看是否有权限
	id, _ := c.Get("id")
	id1 := int(id.(float64))
	//从请求头获取upload_type
	uploadType := c.PostForm("upload_type")
	if uploadType == "" {
		c.JSON(http.StatusOK, gin.H{"error": "upload_type is empty", "code": proto.ParameterError, "message": "failed"})
		return
	}

	user := dao.FindUserByUserID(id1)
	if user.Upload == false {
		c.JSON(http.StatusOK, gin.H{"error": "no upload Permissions", "code": proto.NoUploadPermissions, "message": "failed"})
		return
	}
	//上传文件
	file, err := c.FormFile("file")
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"error": "upload file failed", "code": proto.UploadFileFailed, "message": "failed"})
		return
	}

	//保存文件
	filePath, fileStoreName, err := service.SaveFile(c, file, uploadType)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"error": "save file failed", "code": proto.SaveFileFailed, "message": "failed"})
		return
	}
	//保存文件信息
	fileSize := int(file.Size)
	fileName := file.Filename
	fileType := file.Header.Get("file_type")
	fileID := dao.CreateFile(fileStoreName, fileName, fileType, filePath, fileSize, id1)
	if fileID == 0 {
		c.JSON(http.StatusOK, gin.H{"error": "save file info failed", "code": proto.SaveFileInfoFailed, "message": "failed"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": proto.SuccessCode, "message": "success", "data": fileID})

}

func DownloadFile(c *gin.Context) {
	//参数
	//filename := c.Param("filename")
	file_id, _ := strconv.Atoi(c.Query("id"))
	id, _ := c.Get("id")
	//查询文件信息
	//file := dao.FindFileByNames(file_id, int(id.(float64)))
	file_ := dao.FindFileByID(file_id, int(id.(float64)))
	if file_.ID == 0 {
		c.JSON(http.StatusOK, gin.H{"error": "file not found", "code": proto.FileNotFound, "message": "failed"})
		return
	}
	//下载文件
	// 打开文件
	file, err := os.Open(file_.FilePath + "/" + file_.FileStoreName)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Internal Server Error", "message": "Failed to open file"})
		return
	}
	defer file.Close()

	// 设置响应头
	c.Writer.Header().Set("Content-Type", "application/octet-stream")
	c.Writer.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", file_.FileName))

	// 发送文件内容
	_, err = io.Copy(c.Writer, file)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Internal Server Error", "message": "Failed to send file"})
		return
	}

	c.Status(http.StatusOK)
}

func SetRedis(c *gin.Context) {
	//先查看是否有权限
	id, _ := c.Get("id")
	id1 := int(id.(float64))
	user := dao.FindUserByUserID(id1)
	if user.Redis == false {
		c.JSON(http.StatusOK, gin.H{"error": "no redis Permissions", "code": proto.NoRedisPermissions, "message": "failed"})
		return
	}
	//解析请求参数
	var req SetRedisReq
	if err := c.ShouldBind(&req); err == nil {
		var code int
		var message string
		if req.Option == "list" {
			code, message = service.SetToolRedisList(req.Key, req.Value, req.Expire)
		} else if req.Option == "set" {
			code, message = service.SetToolRedisSet(req.Key, req.Value, req.Expire)
		} else if req.Option == "kv" {
			code, message = service.SetToolRedisKV(req.Key, req.Value, req.Expire)
		}
		c.JSON(http.StatusOK, gin.H{"code": code, "message": message})
	} else {
		c.JSON(http.StatusOK, gin.H{"error": "parameter error", "code": proto.ParameterError, "message": "failed"})
		return
	}
}

func GetRedis(c *gin.Context) {
	//先查看是否有权限
	id, _ := c.Get("id")
	id1 := int(id.(float64))
	user := dao.FindUserByUserID(id1)
	if user.Redis == false {
		c.JSON(http.StatusOK, gin.H{"error": "no redis Permissions", "code": proto.NoRedisPermissions, "message": "failed"})
		return
	}
	//解析请求参数
	var req SetRedisReq
	if err := c.ShouldBind(&req); err == nil {
		if req.Option == "one" {
			code, message := service.GetToolRedis(req.Key)
			req.Value = message
			c.JSON(http.StatusOK, gin.H{"code": code, "message": message, "data": req})
		} else if req.Option == "all" {
			code, message, data := service.GetAllRedis()
			c.JSON(http.StatusOK, gin.H{"code": code, "message": message, "data": data})
		}
	} else {
		c.JSON(http.StatusOK, gin.H{"error": "parameter error", "code": proto.ParameterError, "message": "failed"})
		return
	}
}

// 服务器、设备状态扫描
func ScanDeviceStatus() {
	// TODO
	// 检查设备状态
	// 如果设备状态异常, 则发送邮件通知
	devices := worker.GetRedisSetMembers("627gyf3488h")
	offline := ""
	for _, v := range devices {
		c := worker.IsContainKey("monitor_" + v)
		if c == false {
			worker.SetRedisWithExpire("monitor_"+v, "1", time.Hour*24)
			offline += v + ","
		}
	}

	if offline != "" {
		title := "设备状态异常"
		content := "设备状态异常\n设备: " + offline + "\t时间：" + time.Now().String()
		go SendMail(title, content)
	}

}

func SendMail(title, content string) {
	//捕获异常
	defer func() {
		if err := recover(); err != nil {
			fmt.Errorf("tool send mail error: %s", err)
		}
	}()
	// TODO
	// 发送邮件
	// 邮件内容
	// 邮件标题
	// 收件人
	// 发送邮件
	// 发送邮件通知
	// 发送邮件通知
	var em worker.MyEmail
	em.SmtpPassword = "nihzazdkmucnbhid"
	em.SmtpHost = "pop.qq.com:587"
	em.SmtpUserName = "354425203@qq.com"
	em.SmtpPort = 587
	em.ImapPort = 993
	err := em.Send(title, content, []string{"3236990479@qq.com", "lijun@ljsea.top"})
	if err != nil {
		fmt.Println(err)
	}
}