package controller

import (
	"encoding/json"
	"github.com/gin-gonic/gin"
	"iot_manager_service/app/file/model"
	"iot_manager_service/app/file/service"
	"iot_manager_service/util/cache"
	"iot_manager_service/util/common"
	"iot_manager_service/util/token"
	"net/http"
	"os"
	"path"
	"path/filepath"
	"strconv"
	"time"
)

var FileController = new(file)

type file struct{}

func (f *file) Distribute(c *gin.Context) {
	//获取当前用户
	header := c.GetHeader("Authorization")
	claims, _ := token.JwtClaims.ParseJwtToken(header)
	nowSysUser, _ := cache.GetNowSysUser(claims.ID)

	//TODO:校验签名 如果成功则上传否则不上传
	formFile, err := c.FormFile("file")
	if err != nil {
		c.JSON(http.StatusOK, common.ParamsInvalidResponse("获取文件数据失败", nil))
		return
	}

	//获取后缀
	sufx := path.Ext(formFile.Filename)
	//利用时间戳生成文件名
	fileNameInt := time.Now().Unix()
	fileNameStr := strconv.FormatInt(fileNameInt, 10)
	//新的文件名
	newfileName := fileNameStr + sufx
	_, err = os.Stat("uploadfiles")
	if os.IsNotExist(err) {
		os.Mkdir("./uploadfiles", os.ModePerm)
	}
	//保存文件
	filePath := filepath.Join("uploadfiles", "/", newfileName)
	c.SaveUploadedFile(formFile, filePath)

	//获取另外一个参数
	str := c.Request.FormValue("req")
	userFile := model.ReqSysUserFile{}
	json.Unmarshal([]byte(str), &userFile)

	savePath := "uploadfiles/" + newfileName
	distribute := service.FileService.Distribute(formFile.Filename, savePath, &userFile, nowSysUser.ID)

	c.JSON(http.StatusOK, distribute)
}

func (f *file) GetSysUserFiles(c *gin.Context) {
	header := c.GetHeader("Authorization")
	claims, _ := token.JwtClaims.ParseJwtToken(header)

	var search model.SearchSysUserFiles
	err := c.ShouldBindJSON(&search)
	if err != nil {
		c.JSON(http.StatusOK, common.ParamsInvalidResponse(err.Error(), nil))
		return
	}

	files := service.FileService.GetSysUserFiles(claims.ID, search)
	c.JSON(http.StatusOK, files)
}

// 转发文件
func (f *file) ForwardingFile(c *gin.Context) {
	fileid := c.Query("fileId")
	header := c.GetHeader("Authorization")
	claims, _ := token.JwtClaims.ParseJwtToken(header)

	requsers := model.ReqSysUsers{}
	if err := c.ShouldBindJSON(&requsers); err != nil {
		c.JSON(http.StatusOK, common.ParamsInvalidResponse(err.Error(), nil))
		return
	}
	uid, _ := strconv.Atoi(claims.ID)
	fid, _ := strconv.Atoi(fileid)
	forwardingFile := service.FileService.ForwardingFile(uid, fid, requsers.SysUsersId)
	c.JSON(http.StatusOK, forwardingFile)
}

// 查看文件
func (f *file) ViewFile(c *gin.Context) {
	fileId := c.Query("fileId")
	service.FileService.GetFile(fileId, c)
}

// 下载文件
func (f *file) DownloadFile(c *gin.Context) {
	fileid := c.Query("fileId")
	service.FileService.GetFile(fileid, c)
}