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80 lines
1.7 KiB
80 lines
1.7 KiB
package utils
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import (
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"fmt"
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"log"
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"net/http"
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"strings"
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"github.com/dustinpianalto/errors"
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"github.com/gorilla/mux"
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)
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func Mount(r *mux.Router, path string, handler http.Handler) {
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r.PathPrefix(path).Handler(
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http.StripPrefix(
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strings.TrimSuffix(path, "/"),
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handler,
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),
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)
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}
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type RootHandler func(http.ResponseWriter, *http.Request) error
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func (rh RootHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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err := rh(w, r)
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if err == nil {
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return
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}
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log.Println(err)
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e, ok := err.(*errors.Error)
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if !ok {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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if errors.Is(errors.Permission, e) {
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body := getErrorBody("Permission Denied")
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w.WriteHeader(http.StatusForbidden)
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w.Write(body)
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}
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if errors.Is(errors.Incorrect, e) && strings.Contains(string(e.Method), "login") {
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body := getErrorBody("Invalid Login Credentials")
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w.WriteHeader(http.StatusUnauthorized)
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w.Write(body)
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}
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if errors.Is(errors.Incorrect, e) && strings.Contains(string(e.Method), "refresh") {
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body := getErrorBody("Missing or Invalid Cookie")
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w.WriteHeader(http.StatusUnauthorized)
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w.Write(body)
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}
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if errors.Is(errors.Malformed, e) {
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body := getErrorBody("Bad Request")
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w.WriteHeader(http.StatusBadRequest)
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w.Write(body)
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}
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if errors.Is(errors.Internal, e) {
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body := getErrorBody("Internal Server Error")
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w.WriteHeader(http.StatusInternalServerError)
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w.Write(body)
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}
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if errors.Is(errors.Conflict, e) && strings.Contains(string(e.Method), "register") {
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body := getErrorBody("User already exists")
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w.WriteHeader(http.StatusConflict)
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w.Write(body)
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}
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}
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func getErrorBody(s string) []byte {
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return []byte(fmt.Sprintf("{\"error\": \"%s\"}", s))
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}
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