#!/usr/bin/env python3
"""
Minimaler Entwicklungs-Server für die Prompt Templates Webansicht.

Startet auf Port 8081 und dient die statischen Dateien aus.
Nutzt modulare Handler und Pfad-Validierung.
"""

import logging
import os
import socketserver

# Support für direkte Ausführung (python3 web/serve.py) und Package-Import
try:
    from .path_validator import PathValidator
    from .handler import Handler
except ImportError:
    from path_validator import PathValidator
    from handler import Handler

# Verzeichnisse bestimmen
DIRECTORY = os.path.dirname(os.path.abspath(__file__))
ROOT_DIR = os.path.abspath(os.path.join(DIRECTORY, ".."))

# Validator initialisieren
validator = PathValidator(ROOT_DIR, DIRECTORY)
Handler.validator = validator
Handler.directory = DIRECTORY


def find_free_port(start_port=9000):
    """Finde einen freien Port ab start_port.

    Für zukünftige Smoke-Test-Integration.
    """
    import socket

    port = start_port
    while port < 10000:
        try:
            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
                s.bind(("", port))
                return port
        except OSError:
            port += 1
    return None


def main():
    PORT = 8081
    logging.info("Serving on http://localhost:%s", PORT)

    socketserver.TCPServer.allow_reuse_address = True
    with socketserver.TCPServer(("", PORT), Handler) as httpd:
        logging.info("Serving Prompt Templates on http://localhost:%s", PORT)
        logging.info("Press Ctrl+C to stop")
        logging.info("Directory: %s", DIRECTORY)
        try:
            httpd.serve_forever()
        except KeyboardInterrupt:
            logging.info("\nServer stopped")


if __name__ == "__main__":
    main()