@echo off
setlocal enabledelayedexpansion

:: monitor.bat -- Open the serial monitor
::
:: Reads baud rate from .anvil.toml. No Anvil binary required.
::
:: Usage:
::   monitor.bat                Open monitor (auto-detect port)
::   monitor.bat -p COM3       Specify port
::   monitor.bat -b 9600       Override baud rate

set "SCRIPT_DIR=%~dp0"
set "CONFIG=%SCRIPT_DIR%.anvil.toml"

if not exist "%CONFIG%" (
    echo FAIL: No .anvil.toml found in %SCRIPT_DIR%
    exit /b 1
)

:: -- Parse .anvil.toml ----------------------------------------------------
for /f "tokens=1,* delims==" %%a in ('findstr /b "baud " "%CONFIG%"') do (
    set "BAUD=%%b"
)
set "BAUD=%BAUD: =%"
set "BAUD=%BAUD:"=%"
if "%BAUD%"=="" set "BAUD=115200"

:: -- Parse arguments ------------------------------------------------------
set "PORT="

:parse_args
if "%~1"=="" goto done_args
if "%~1"=="-p" set "PORT=%~2" & shift & shift & goto parse_args
if "%~1"=="--port" set "PORT=%~2" & shift & shift & goto parse_args
if "%~1"=="-b" set "BAUD=%~2" & shift & shift & goto parse_args
if "%~1"=="--baud" set "BAUD=%~2" & shift & shift & goto parse_args
if "%~1"=="--help" goto show_help
if "%~1"=="-h" goto show_help
echo FAIL: Unknown option: %~1
exit /b 1

:show_help
echo Usage: monitor.bat [-p PORT] [-b BAUD]
echo   Opens serial monitor. Baud rate from .anvil.toml.
exit /b 0

:done_args

:: -- Preflight ------------------------------------------------------------
where arduino-cli >nul 2>nul
if errorlevel 1 (
    echo FAIL: arduino-cli not found in PATH.
    exit /b 1
)

:: -- Auto-detect port -----------------------------------------------------
if "%PORT%"=="" (
    for /f "tokens=1" %%p in ('arduino-cli board list 2^>nul ^| findstr /i "serial" ^| findstr /n "." ^| findstr "^1:"') do (
        set "PORT=%%p"
    )
    set "PORT=!PORT:1:=!"
    if "!PORT!"=="" (
        echo FAIL: No serial port detected. Specify with: monitor.bat -p COM3
        exit /b 1
    )
    echo warn Auto-detected port: !PORT! (use -p to override)
)

:: -- Monitor --------------------------------------------------------------
echo Opening serial monitor on %PORT% at %BAUD% baud...
echo Press Ctrl+C to exit.
echo.
arduino-cli monitor -p %PORT% -c "baudrate=%BAUD%"