package oss

import (
	"app.yhyue.com/moapp/jybase/api"
	. "app.yhyue.com/moapp/jybase/common"
	"fmt"
	"io"
	"jygit.jydev.jianyu360.cn/BaseService/ossService/constant"
	"jygit.jydev.jianyu360.cn/BaseService/ossService/util"
	"log"
	"net/http"
	"strings"
)

/* restful方式上传
 * @param bucket_id 桶id
 * @param object_name 对象名称
 * @param text 文本内容
 * @param file 附件
 * @param gzip 是否压缩，true or false
 * @return {"error_code":0,"error_msg":"上传成功"}
 */
func UploadHandler(w http.ResponseWriter, r *http.Request) {
	if !api.R.CheckReqParam(w, r, "bucket_id", "object_name") {
		return
	}
	bucketID := r.FormValue("bucket_id")
	objectName := r.FormValue("object_name")
	gzipFlag := r.FormValue("gzip")
	log.Println(GetIp(r), "restful方式上传文件", bucketID, objectName, gzipFlag)
	text := strings.TrimSpace(r.FormValue("text"))
	gzipEnabled := gzipFlag == "" || gzipFlag == "true"
	var reader io.Reader
	file, _, err := r.FormFile("file")
	status, message := func() (int, string) {
		if err != nil {
			if text == "" {
				return api.Error_code_1002, api.Error_msg_1002 + "，file和text必须传一个"
			} else {
				reader = strings.NewReader(text)
			}
		} else {
			reader = file
			defer file.Close()
		}
		err = UploadAttachment(bucketID, objectName, reader, gzipEnabled)
		if err != nil {
			return -1, fmt.Sprintf(constant.UploadFail, err)
		}
		return 0, constant.UploadSuccess
	}()
	api.R.ServeJson(w, r, &api.Result{Error_code: status, Error_msg: message})
}

/* restful方式下载
 * @param bucket_id 桶id
 * @param object_name 对象名称
 * @return 文件内容
 */
func DownloadHandler(w http.ResponseWriter, r *http.Request) {
	bucketID := r.FormValue("bucket_id")
	if bucketID == "" {
		http.Error(w, api.Error_msg_1002+"bucket_id", http.StatusInternalServerError)
		return
	}
	objectName := r.FormValue("object_name")
	if objectName == "" {
		http.Error(w, api.Error_msg_1002+"object_name", http.StatusInternalServerError)
		return
	}
	log.Println(GetIp(r), "restful方式上传文件", bucketID, objectName)
	data, err := DownloadAttachment(bucketID, objectName)
	if err != nil {
		log.Println(constant.DownloadFail, err)
		http.Error(w, fmt.Sprintf(constant.DownloadFail, err), http.StatusInternalServerError)
		return
	}
	w.Write(data)
}

/* restful方式删除
 * @param bucket_id 桶id
 * @param object_name 对象名称
 * @return {"error_code":0,"error_msg":"删除成功"}
 */
func DeleteHandler(w http.ResponseWriter, r *http.Request) {
	if !api.R.CheckReqParam(w, r, "bucket_id", "object_name") {
		return
	}
	bucketID := r.FormValue("bucket_id")
	objectName := r.FormValue("object_name")
	log.Println(GetIp(r), "restful方式删除文件", bucketID, objectName)
	status, message := func() (int, string) {
		err := DeleteAttachment(bucketID, objectName)
		if err != nil {
			return -1, fmt.Sprintf(constant.DeleteFail, err)
		}
		return 1, constant.DeleteSuccess
	}()
	api.R.ServeJson(w, r, &api.Result{Error_code: status, Error_msg: message})
}

// NodesHandler 接口用于查看当前在线节点信息（依赖heartbeat中redis心跳）
func NodesHandler(w http.ResponseWriter, r *http.Request) {
	nodes, err := util.GetOnlineNodesJSON() // 此函数在 heartbeat 模块中实现
	if err != nil {
		log.Println("Fetch nodes failed: %v", err)
		http.Error(w, "Fetch nodes failed: "+err.Error(), http.StatusInternalServerError)
		return
	}
	w.Header().Set("Content-Type", "application/json")
	w.Write(nodes)
}

/* 根据标讯id获取正文
 * @param bucket_id 桶id
 * @param object_name 对象名称
 * @return 标讯正文内容
 */
func BidDetailHandler(w http.ResponseWriter, r *http.Request) {
	bucketID := r.FormValue("bucket_id")
	if bucketID == "" {
		http.Error(w, api.Error_msg_1002+"bucket_id", http.StatusInternalServerError)
		return
	}
	objectName := r.FormValue("object_name")
	if objectName == "" {
		http.Error(w, api.Error_msg_1002+"object_name", http.StatusInternalServerError)
		return
	}
	objectName += ".txt"
	log.Println(GetIp(r), "根据标讯id获取正文", bucketID, objectName)
	w.Write(GetBidDetail(bucketID, objectName))
}