backfeed/helpers.go

package main

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

func GenShardHash(b []byte) (final byte) {
	for i, b := range b {
		final = (b ^ final ^ byte(i)) + final + byte(i) + final*byte(i)
	}
	return final
}

func WriteResponse(res http.ResponseWriter, statusCode int, v any) {
	res.Header().Set("Content-Type", "application/json")
	res.WriteHeader(statusCode)
	if statusCode == http.StatusNoContent {
		return
	}
	if err, isError := v.(error); isError {
		v = map[string]any{
			"error":       fmt.Sprintf("%v", err),
			"status_code": statusCode,
		}
	} else {
		v = map[string]any{
			"data":        v,
			"status_code": statusCode,
		}
	}
	json.NewEncoder(res).Encode(v)
}