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response.go
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/
response.go
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package response
import (
"bytes"
"encoding/json"
"fmt"
"log"
"net/http"
"github.com/jakewright/home-automation/libraries/go/errors"
)
type response struct {
Message string `json:"message,omitempty"`
Data interface{} `json:"data,omitempty"`
}
func Write(w http.ResponseWriter, buf bytes.Buffer) {
if _, err := buf.WriteTo(w); err != nil {
log.Println("Failed to write response", err)
}
}
// WriteJSON returns a response to the client
func WriteJSON(w http.ResponseWriter, data interface{}) {
status := http.StatusOK
payload := response{}
if e, ok := data.(*errors.Error); ok {
status = e.HTTPStatus()
payload.Message = e.Error()
} else if e, ok := (data).(error); ok {
status = http.StatusInternalServerError
payload.Message = e.Error()
} else {
payload.Data = data
}
writeJSON(w, status, payload)
}
func writeJSON(w http.ResponseWriter, status int, payload interface{}) {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
rsp, err := json.Marshal(&payload)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
log.Println(err)
return
}
w.WriteHeader(status)
if _, err := fmt.Fprint(w, string(rsp)); err != nil {
log.Println("Failed to write response", err)
}
}