first commit

server/response.go

@@ -0,0 +1,98 @@
+package server
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"time"
+)
+
+type httpError struct {
+	Status    int       `json:"status"`
+	Timestamp time.Time `json:"timestamp"`
+	Error     string    `json:"error"`
+	Message   string    `json:"message"`
+	Path      string    `json:"path"`
+}
+
+type successMessage struct {
+	Status    int       `json:"status"`
+	Timestamp time.Time `json:"timestamp"`
+	Message   string    `json:"message"`
+}
+
+func internalServerError(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		Status:    500,
+		Error:     "Internal Server Error",
+		Message:   "The server encountered an unexpected condition that prevented it from fulfilling the request.",
+		Path:      r.RequestURI,
+		Timestamp: time.Now(),
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(500)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func unauthorized(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		Status:    401,
+		Error:     "Unauthorized",
+		Message:   "The request has not been completed because it lacks valid authentication credentials for the requested resource.",
+		Path:      r.RequestURI,
+		Timestamp: time.Now(),
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.Header().Add("WWW-Authenticate", "Custom realm=\"Login via /api/login\"")
+	w.WriteHeader(401)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func ok(obj interface{}, w http.ResponseWriter, _ *http.Request) {
+	payload, err := json.Marshal(obj)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func badRequest(message string, w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		Status:    400,
+		Error:     "Bad Request",
+		Message:   message,
+		Path:      r.RequestURI,
+		Timestamp: time.Now(),
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(400)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}