@echo off
setlocal enabledelayedexpansion

cd /d "%~dp0"

echo.
echo ================================================================================
echo  Commonwealth Online Server - Start Script
echo ================================================================================
echo.

python --version >nul 2>&1
if errorlevel 1 (
    echo ERROR: Python is not installed or not in PATH.
    echo Please install Python 3.9+ from https://www.python.org
    pause
    exit /b 1
)

if not exist "requirements-server.txt" (
    echo ERROR: Missing requirements-server.txt
    pause
    exit /b 1
)

set "UPDATE_DEPENDENCIES=0"
set "CONFIG_FILE=%cd%\commonwealth-server.json"
set "SERVER_ARGS="
:parse_args
if "%~1"=="" goto args_done
if /I "%~1"=="--update-dependencies" (
    set "UPDATE_DEPENDENCIES=1"
    shift
    goto parse_args
)
if /I "%~1"=="--config" (
    if "%~2"=="" (
        echo ERROR: --config requires a config file path.
        pause
        exit /b 1
    )
    set "CONFIG_FILE=%~f2"
    shift
    shift
    goto parse_args
)
if /I "%~1"=="-c" (
    if "%~2"=="" (
        echo ERROR: -c requires a config file path.
        pause
        exit /b 1
    )
    set "CONFIG_FILE=%~f2"
    shift
    shift
    goto parse_args
)
echo %~1| findstr /I /R "\.json$" >nul
if not errorlevel 1 (
    set "CONFIG_FILE=%~f1"
    shift
    goto parse_args
)
set "SERVER_ARGS=!SERVER_ARGS! %1"
shift
goto parse_args
:args_done

if not exist ".venv\Scripts\python.exe" (
    echo Creating virtual environment at .venv...
    python -m venv .venv
    if errorlevel 1 (
        echo ERROR: Failed to create virtual environment.
        pause
        exit /b 1
    )
)

set "VENV_PYTHON=.venv\Scripts\python.exe"
if not exist "%VENV_PYTHON%" (
    echo ERROR: Virtual environment interpreter missing.
    pause
    exit /b 1
)

set "NEED_INSTALL=0"
if not exist ".venv\.requirements-server.sha256" set "NEED_INSTALL=1"
if "%UPDATE_DEPENDENCIES%"=="1" set "NEED_INSTALL=1"

if "%NEED_INSTALL%"=="0" (
    "%VENV_PYTHON%" -c "from hashlib import sha256; from pathlib import Path; expected=Path('.venv/.requirements-server.sha256').read_text(encoding='utf-8').strip(); actual=sha256(Path('requirements-server.txt').read_bytes()).hexdigest(); raise SystemExit(0 if expected==actual else 1)"
    if errorlevel 1 set "NEED_INSTALL=1"
)

if "%NEED_INSTALL%"=="1" (
    echo Installing dedicated-server dependencies into .venv...
    "%VENV_PYTHON%" -m pip install --upgrade pip >nul 2>&1
    "%VENV_PYTHON%" -m pip install -r requirements-server.txt
    if errorlevel 1 (
        echo ERROR: Failed to install required packages.
        pause
        exit /b 1
    )
    "%VENV_PYTHON%" -c "from hashlib import sha256; from pathlib import Path; Path('.venv/.requirements-server.sha256').write_text(sha256(Path('requirements-server.txt').read_bytes()).hexdigest() + chr(10), encoding='utf-8')"
    echo Dependencies installed.
) else (
    echo Dependencies are up to date.
)
echo.

if not exist "!CONFIG_FILE!" (
    echo Generating default configuration file...
    "%VENV_PYTHON%" -u consumer_server_cli.py config init "!CONFIG_FILE!"
    if errorlevel 1 (
        echo ERROR: Failed to generate config file.
        pause
        exit /b 1
    )
    echo.
)

echo Starting Commonwealth Online Server...
echo Type help for commands. Type quit or press Ctrl+C to stop.
echo.

"%VENV_PYTHON%" -u consumer_server_cli.py serve --config "!CONFIG_FILE!" --interactive !SERVER_ARGS!
set "EXIT_CODE=!ERRORLEVEL!"

if not "!EXIT_CODE!"=="0" (
    echo.
    echo Server failed to start. If you see "Only one usage of each socket address"
    echo error, the port may already be in use.
    echo.
    choice /C YN /N /M "Would you like to fix the port issue? (Y/N): "
    if !errorlevel!==1 (
        echo.
        call fix-port.bat
    )
)

pause
exit /b !EXIT_CODE!