94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package core
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import (
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"encoding/json"
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"errors"
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"log"
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"net/http"
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)
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type JsonResponse struct {
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writer http.ResponseWriter
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request *http.Request
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}
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func (j *JsonResponse) Standard(v interface{}) {
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j.writer.WriteHeader(http.StatusOK)
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j.commonHeaders()
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j.writer.Write(j.toJSON(v))
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}
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func (j *JsonResponse) Created(v interface{}) {
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j.writer.WriteHeader(http.StatusCreated)
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j.commonHeaders()
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j.writer.Write(j.toJSON(v))
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}
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func (j *JsonResponse) NoContent() {
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j.writer.WriteHeader(http.StatusNoContent)
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j.commonHeaders()
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}
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func (j *JsonResponse) BadRequest(err error) {
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log.Println("[API:BadRequest]", err)
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j.writer.WriteHeader(http.StatusBadRequest)
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j.commonHeaders()
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if err != nil {
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j.writer.Write(j.encodeError(err))
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}
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}
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func (j *JsonResponse) NotFound(err error) {
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log.Println("[API:NotFound]", err)
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j.writer.WriteHeader(http.StatusNotFound)
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j.commonHeaders()
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j.writer.Write(j.encodeError(err))
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}
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func (j *JsonResponse) ServerError(err error) {
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log.Println("[API:ServerError]", err)
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j.writer.WriteHeader(http.StatusInternalServerError)
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j.commonHeaders()
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j.writer.Write(j.encodeError(err))
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}
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func (j *JsonResponse) Forbidden() {
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log.Println("[API:Forbidden]")
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j.writer.WriteHeader(http.StatusForbidden)
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j.commonHeaders()
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j.writer.Write(j.encodeError(errors.New("Access Forbidden")))
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}
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func (j *JsonResponse) commonHeaders() {
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j.writer.Header().Set("Accept", "application/json")
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j.writer.Header().Set("Content-Type", "application/json")
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}
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func (j *JsonResponse) encodeError(err error) []byte {
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type errorMsg struct {
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ErrorMessage string `json:"error_message"`
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}
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tmp := errorMsg{ErrorMessage: err.Error()}
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data, err := json.Marshal(tmp)
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if err != nil {
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log.Println("encodeError:", err)
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}
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return data
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}
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func (j *JsonResponse) toJSON(v interface{}) []byte {
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b, err := json.Marshal(v)
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if err != nil {
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log.Println("Unable to convert interface to JSON:", err)
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return []byte("")
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}
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return b
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}
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