indieauth-server/internal/server/responses.go

package server

import (
	"encoding/json"
	"fmt"
	"log/slog"
	"net/http"
)

func sendResponse(writer http.ResponseWriter, statusCode int, payload any) {
	data, err := json.Marshal(payload)
	if err != nil {
		sendServerError(
			writer,
			fmt.Errorf("error marshalling the JSON response: %w", err),
		)

		return
	}

	writer.Header().Set("Content-Type", "application/json")
	writer.WriteHeader(statusCode)
	_, _ = writer.Write(data)
}

func sendClientError(writer http.ResponseWriter, statusCode int, err error) {
	sendErrorResponse(
		writer,
		statusCode,
		"Client Error: "+err.Error(),
	)
}

func sendServerError(writer http.ResponseWriter, err error) {
	sendErrorResponse(
		writer,
		http.StatusInternalServerError,
		"Server Error: "+err.Error(),
	)
}

func sendErrorResponse(writer http.ResponseWriter, statusCode int, message string) {
	slog.Error(message, "request-id", writer.Header().Get("X-Request-ID"))

	http.Error(writer, http.StatusText(statusCode), statusCode)
}