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default_response_writer.go
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/
default_response_writer.go
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package goframe
import (
"encoding/json"
"fmt"
"net/http"
)
// assert that DefaultResponseWriter implementations is fulfilling its interface
var _ ResponseWriter = &DefaultResponseWriter{}
type DefaultResponseWriter struct {
res http.ResponseWriter
}
type standardJSONResponse struct {
Status bool `json:"status"`
Data interface{} `json:"data,omitempty"`
Message string `json:"message,omitempty"`
ErrorCode string `json:"error_code,omitempty"`
}
func (drw DefaultResponseWriter) Generic(httpCode int, data []byte) error {
drw.res.WriteHeader(httpCode)
drw.res.Write(data)
return nil
}
func (drw DefaultResponseWriter) SuccessJSON(httpCode int, data interface{}, message string) error {
responseJson := standardJSONResponse{
Status: true,
Data: data,
Message: message,
}
response, err := json.Marshal(responseJson)
if err != nil {
cl.Error(fmt.Sprintf("[SuccessJSON] Error: %s; val: %+v", err.Error(), data))
return err
}
drw.res.Header().Add("Content-Type", "application/json")
drw.res.WriteHeader(httpCode)
drw.res.Write(response)
return nil
}
func (drw DefaultResponseWriter) ErrorJSON(err error) error {
responseJson := standardJSONResponse{
Status: false,
}
httpCode := int(500)
if ie, ok := err.(*internalError); ok {
httpCode = ie.HttpCode()
responseJson.ErrorCode = ie.ErrCode()
responseJson.Message = ie.Message()
} else {
responseJson.ErrorCode = "dev"
responseJson.Message = err.Error()
}
response, e := json.Marshal(responseJson)
if e != nil {
cl.Error(fmt.Sprintf("[ErrorJSON] Error: %s; val: %s", e.Error(), err.Error()))
return e
}
drw.res.Header().Add("Content-Type", "application/json")
drw.res.WriteHeader(httpCode)
drw.res.Write(response)
return nil
}