package com.hubilon;

import com.hubilon.util.BrowserLauncher;
import com.hubilon.util.DebugState;

import java.io.File;
import java.net.URISyntaxException;
import java.nio.file.Path;
import java.security.CodeSource;

/**
 * Java replacement for run.ps1: embedded HTTP server serving the bundled
 * index.html and proxying Kong/APIM comparison requests, driven by a
 * config.json that lives next to this jar (created from a sample if missing).
 */
public final class Main {

    private Main() {
    }

    public static void main(String[] args) throws Exception {
        int port = 8080;
        String config = "config.json";
        boolean noBrowser = false;
        boolean debug = false;

        for (int i = 0; i < args.length; i++) {
            switch (args[i]) {
                case "--port":
                    port = Integer.parseInt(args[++i]);
                    break;
                case "--config":
                    config = args[++i];
                    break;
                case "--no-browser":
                    noBrowser = true;
                    break;
                case "--debug":
                    debug = true;
                    break;
                default:
                    System.out.println("Unknown argument: " + args[i]);
            }
        }

        Path workDir = resolveWorkDir();
        DebugState debugState = new DebugState(debug);

        ApiDiffServer server = ApiDiffServer.create(port, workDir, config, debugState);
        server.start();

        System.out.println();
        System.out.println("  Kong <-> Azure APIM diff tester (Java)");
        System.out.println("  ---------------------------------------");
        System.out.println("  URL     : " + server.getBaseUrl());
        System.out.println("  workDir : " + workDir);
        if (debug) {
            System.out.println("  debug   : ON (--debug)");
        }
        System.out.println("  Press Ctrl+C to stop.");
        System.out.println();

        if (!noBrowser) {
            BrowserLauncher.open(server.getBaseUrl());
        }

        Runtime.getRuntime().addShutdownHook(new Thread(server::stop));
    }

    private static Path resolveWorkDir() {
        try {
            CodeSource codeSource = Main.class.getProtectionDomain().getCodeSource();
            if (codeSource != null) {
                File location = new File(codeSource.getLocation().toURI());
                File dir = location.isFile() ? location.getParentFile() : location;
                if (dir != null) {
                    return dir.toPath().toAbsolutePath().normalize();
                }
            }
        } catch (URISyntaxException e) {
            // fall through to the working-directory default
        }
        return Path.of("").toAbsolutePath();
    }
}