initial commit

app/api.go

@@ -0,0 +1,59 @@
+package app
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+)
+
+type Error struct {
+	Ok    bool   `json:"ok"`
+	Error string `json:"error"`
+}
+
+func WriteError(w http.ResponseWriter, err error) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusBadRequest)
+	e := json.NewEncoder(w).Encode(Error{
+		Ok:    false,
+		Error: err.Error(),
+	})
+	if e != nil {
+		log.Println(e)
+	}
+}
+
+type Response[T any] struct {
+	Ok   bool `json:"ok"`
+	Data T    `json:"data"`
+}
+
+func WriteResponse[T any](w http.ResponseWriter, data T) {
+	WriteResponseCode(w, data, 200)
+}
+func WriteResponseCode[T any](w http.ResponseWriter, data T, code int) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	enc := json.NewEncoder(w)
+	enc.SetEscapeHTML(false)
+	e := enc.Encode(Response[T]{
+		Ok:   true,
+		Data: data,
+	})
+	if e != nil {
+		log.Println(e)
+	}
+}
+
+func WriteResponseOrError[T any](w http.ResponseWriter, data T, err error) {
+	if err != nil {
+		WriteError(w, err)
+	} else {
+		WriteResponse(w, data)
+	}
+}
+func ReadBody[T any](r *http.Request) (T, error) {
+	dst := new(T)
+	err := json.NewDecoder(r.Body).Decode(dst)
+	return *dst, err
+}