@echo off
rem ai-chat-exporter.cmd - run the exporter without activating a virtualenv.
rem
rem Command Prompt (cmd.exe) - the documented way:
rem     cd C:\path\to\AIChatExporter
rem     ai-chat-exporter export --provider all
rem
rem cmd.exe searches the current directory before PATH and resolves the bare
rem name through PATHEXT (which includes .CMD), so no ".\" and no extension are
rem needed. The extensionless POSIX sibling is ignored: it is not in PATHEXT.
rem
rem PowerShell does NOT search the current directory, and ".\ai-chat-exporter"
rem there would resolve to the extensionless POSIX script, which PowerShell
rem cannot run. In PowerShell, name this file explicitly:
rem     .\ai-chat-exporter.cmd export --provider all
rem
rem Creates .venv and installs dependencies on first run, so a fresh clone needs
rem no "python -m venv" / ".venv\Scripts\activate" ceremony. Reinstalls
rem automatically when pyproject.toml changes.
rem
rem The working directory is deliberately NOT changed - EXPORT_DIR, CACHE_DIR
rem and .env discovery are all relative to it. POSIX equivalent: ai-chat-exporter

setlocal enabledelayedexpansion

set "DIR=%~dp0"
if "%DIR:~-1%"=="\" set "DIR=%DIR:~0,-1%"
set "VENV=%DIR%\.venv"
set "PY=%VENV%\Scripts\python.exe"
set "STAMP=%VENV%\.deps-stamp"

rem See the POSIX script for why this warns rather than blocks: cache\ resolves
rem against the current directory, so the wrong one silently starts a second
rem archive instead of failing.
if /i not "%CD%"=="%DIR%" if "%AI_CHAT_EXPORTER_QUIET_CWD%"=="" (
    echo warning: running from %CD%, not %DIR% 1>&2
    echo          cache\ and exports\ resolve against the current directory, 1>&2
    echo          so this may start a separate archive. Set 1>&2
    echo          AI_CHAT_EXPORTER_QUIET_CWD=1 to silence this. 1>&2
)

if not exist "%PY%" (
    echo Creating virtualenv in %VENV% ... 1>&2
    rem The py launcher is the reliable way to get a specific version; fall back
    rem to whatever "python" is if it is not installed.
    where py >nul 2>&1
    if !errorlevel! equ 0 (
        py -3 -m venv "%VENV%"
    ) else (
        python -m venv "%VENV%"
    )
    if not exist "%PY%" (
        echo error: could not create a virtualenv - install Python 3.11+ from 1>&2
        echo        python.org or the Microsoft Store, then re-run. 1>&2
        exit /b 1
    )
    if exist "%STAMP%" del "%STAMP%"
)

rem Staleness check, in pure batch: %%~tF is the file's last-modified stamp, so
rem storing it and comparing strings needs no external process. The obvious
rem alternative - asking PowerShell to compare timestamps - costs ~1s of
rem interpreter startup on *every* command, which is a lot to pay to almost
rem always learn that nothing changed.
set "PYPROJ_TIME="
for %%F in ("%DIR%\pyproject.toml") do set "PYPROJ_TIME=%%~tF"

set "SAVED_TIME="
if exist "%STAMP%" set /p SAVED_TIME=<"%STAMP%"

if not "%SAVED_TIME%"=="%PYPROJ_TIME%" (
    echo Installing dependencies ... 1>&2
    "%PY%" -m pip install --quiet --upgrade pip
    "%PY%" -m pip install --quiet -e "%DIR%"
    if !errorlevel! neq 0 (
        echo error: dependency installation failed. 1>&2
        exit /b !errorlevel!
    )
    > "%STAMP%" echo !PYPROJ_TIME!
)

"%PY%" -m src.main %*
exit /b %errorlevel%