databag/net/server/internal/api_getChannelSubjectField.go
2022-03-02 13:19:16 -08:00

39 lines
845 B
Go

package databag
import (
"time"
"bytes"
"strings"
"net/http"
"encoding/base64"
"github.com/gorilla/mux"
"github.com/valyala/fastjson"
)
func GetChannelSubjectField(w http.ResponseWriter, r *http.Request) {
// scan parameters
params := mux.Vars(r)
field := params["field"]
elements := strings.Split(field, ".")
// get channel stlot
channelSlot, _, err, code := getChannelSlot(r, false)
if err != nil {
ErrResponse(w, code, err)
return
}
// decode data
strData := fastjson.GetString([]byte(channelSlot.Channel.Data), elements...)
binData, err := base64.StdEncoding.DecodeString(strData)
if err != nil {
ErrResponse(w, http.StatusNotFound, err)
return
}
// response with content
http.ServeContent(w, r, field, time.Unix(channelSlot.Channel.Updated, 0), bytes.NewReader(binData))
}