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api.go
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api.go
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package helper
import (
"encoding/json"
"fmt"
"net/http"
)
// SuccessJSONResponse prepares data and writes a HTTP success
func SuccessJSONResponse(status int, v interface{}, w http.ResponseWriter) {
WriteSuccessResponse(status, v, w)
}
type RespStruct struct {
Ret int `json:"ret"`
Data interface{} `json:"data, omitempty"`
Err string `json:"err, omitempty"`
}
func success(data interface{}) []byte {
rs := RespStruct{
Ret: 1,
Data: data,
}
bz, err := json.Marshal(rs)
if err != nil {
panic(err)
}
return bz
}
func errorResp(data string) []byte {
bz, _ := json.Marshal(RespStruct{
Ret: -1,
Err: data,
})
return bz
}
// WriteSuccessResponse writes a HTTP success given a status code and data
func WriteSuccessResponse(statusCode int, data interface{}, w http.ResponseWriter) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(statusCode)
if _, err := w.Write(success(data)); err != nil {
fmt.Printf("Write failed: %v", err)
}
}
// WriteErrorResponse writes a HTTP error given a status code and an error message
func WriteErrorResponse(statusCode int, err error, w http.ResponseWriter) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(statusCode)
if _, err := w.Write(errorResp(err.Error())); err != nil {
fmt.Printf("Write failed: %v", err)
}
}