package com.hubilon.util;

import com.hubilon.json.JsonWriter;
import com.sun.net.httpserver.HttpExchange;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;

public final class HttpResponses {

    private HttpResponses() {
    }

    public static void sendBytes(HttpExchange exchange, int statusCode, String contentType, byte[] payload) throws IOException {
        exchange.getResponseHeaders().set("Content-Type", contentType);
        exchange.getResponseHeaders().set("Cache-Control", "no-store");
        exchange.sendResponseHeaders(statusCode, payload.length == 0 ? -1 : payload.length);
        if (payload.length > 0) {
            try (OutputStream os = exchange.getResponseBody()) {
                os.write(payload);
            }
        } else {
            exchange.getResponseBody().close();
        }
    }

    public static void sendText(HttpExchange exchange, int statusCode, String contentType, String text) throws IOException {
        sendBytes(exchange, statusCode, contentType, text.getBytes(StandardCharsets.UTF_8));
    }

    public static void sendJson(HttpExchange exchange, int statusCode, Object payload) throws IOException {
        sendText(exchange, statusCode, "application/json; charset=utf-8", JsonWriter.write(payload));
    }
}