@echo off
setlocal

set "ROOT=%~dp0"
cd /d "%ROOT%"

echo [1/6] Checking Docker...
set "DOCKER_EXE="
set "DOCKER_DESKTOP_EXE="
call :resolve_docker

if not defined DOCKER_EXE (
  echo Docker CLI was not found.
  echo Install Docker Desktop, or add docker.exe to PATH, then rerun this script.
  pause
  exit /b 1
)

call :ensure_docker_ready
if errorlevel 1 exit /b 1

echo [2/6] Starting mysql, redis and minio...
call "%DOCKER_EXE%" compose up -d mysql redis minio
if errorlevel 1 (
  echo Failed to start docker services.
  pause
  exit /b 1
)

if not exist "%ROOT%backend\.env" (
  echo Missing backend\.env
  pause
  exit /b 1
)

set "PYTHON_CMD="
where py >nul 2>nul
if not errorlevel 1 set "PYTHON_CMD=py -3"

if not defined PYTHON_CMD (
  where python >nul 2>nul
  if not errorlevel 1 set "PYTHON_CMD=python"
)

if not defined PYTHON_CMD (
  echo Python was not found in PATH.
  pause
  exit /b 1
)

if not exist "%ROOT%backend\.venv\Scripts\python.exe" (
  echo [3/6] Creating backend virtual environment...
  call %PYTHON_CMD% -m venv "%ROOT%backend\.venv"
  if errorlevel 1 (
    echo Failed to create backend virtual environment.
    pause
    exit /b 1
  )

  echo [4/6] Installing backend dependencies...
  call "%ROOT%backend\.venv\Scripts\python.exe" -m pip install --disable-pip-version-check -r "%ROOT%backend\requirements.txt"
  if errorlevel 1 (
    echo Failed to install backend dependencies.
    pause
    exit /b 1
  )
) else (
  echo [3/6] Backend virtual environment already exists.
)

if not exist "%ROOT%node_modules" (
  echo [5/6] Installing frontend dependencies...
  call npm install
  if errorlevel 1 (
    echo Failed to install frontend dependencies.
    pause
    exit /b 1
  )
) else (
  echo [5/6] Frontend dependencies already exist.
)

echo [6/6] Starting backend and unified frontend...
start "AIVideo Backend" cmd /k "cd /d ""%ROOT%backend"" && ""%ROOT%backend\.venv\Scripts\python.exe"" -m uvicorn app.main:app --reload --host 0.0.0.0 --port 8000"
start "AIVideo Frontend" cmd /k "cd /d ""%ROOT%"" && npm run dev"

echo.
echo User UI:   http://localhost:3000
echo Admin UI:  http://localhost:3000/admin/login
echo API:       http://localhost:8000
echo.
echo Two windows have been opened for backend and frontend.
pause
goto :eof

:resolve_docker
for /f "delims=" %%I in ('where docker 2^>nul') do (
  if not defined DOCKER_EXE set "DOCKER_EXE=%%~fI"
)

if defined DOCKER_EXE goto resolve_desktop

for %%I in (
  "%ProgramFiles%\Docker\Docker\resources\bin\docker.exe"
  "%ProgramFiles%\Docker\Docker\resources\bin\com.docker.cli.exe"
  "%ProgramW6432%\Docker\Docker\resources\bin\docker.exe"
  "%ProgramW6432%\Docker\Docker\resources\bin\com.docker.cli.exe"
  "%LocalAppData%\Programs\Docker\Docker\resources\bin\docker.exe"
  "%LocalAppData%\Programs\Docker\Docker\resources\bin\com.docker.cli.exe"
) do (
  if exist "%%~fI" (
    set "DOCKER_EXE=%%~fI"
    goto resolve_desktop
  )
)

:resolve_desktop
for %%I in (
  "%ProgramFiles%\Docker\Docker\Docker Desktop.exe"
  "%ProgramW6432%\Docker\Docker\Docker Desktop.exe"
  "%LocalAppData%\Programs\Docker\Docker\Docker Desktop.exe"
) do (
  if exist "%%~fI" (
    set "DOCKER_DESKTOP_EXE=%%~fI"
    goto :eof
  )
)

goto :eof

:ensure_docker_ready
call "%DOCKER_EXE%" info >nul 2>nul
if not errorlevel 1 exit /b 0

if defined DOCKER_DESKTOP_EXE (
  echo Docker Desktop is installed but not ready. Starting it now...
  start "" "%DOCKER_DESKTOP_EXE%"
  call :wait_for_docker 60
  if not errorlevel 1 exit /b 0

  echo Docker Desktop did not become ready in time.
  echo Wait for Docker Desktop to finish starting, then rerun this script.
  pause
  exit /b 1
)

echo Docker CLI was found, but the Docker engine is not ready.
echo Start Docker Desktop or Docker Engine, then rerun this script.
pause
exit /b 1

:wait_for_docker
set "DOCKER_WAIT_REMAINING=%~1"
if not defined DOCKER_WAIT_REMAINING set "DOCKER_WAIT_REMAINING=60"

:wait_for_docker_loop
call "%DOCKER_EXE%" info >nul 2>nul
if not errorlevel 1 exit /b 0
if %DOCKER_WAIT_REMAINING% LEQ 0 exit /b 1

timeout /t 2 /nobreak >nul
set /a DOCKER_WAIT_REMAINING-=2
goto wait_for_docker_loop