@echo off
rem ============================================================
rem  hlamingo installer
rem
rem  Downloads the app and sets up everything needed to run it.
rem  Put this file in an empty folder and double-click it.
rem
rem  ASCII only: cmd.exe reads .cmd in the system codepage, so Cyrillic here
rem  would turn into garbage and break the script. Russian text is printed
rem  from Python instead.
rem ============================================================
setlocal
chcp 65001 >nul
cls

set REPO_WEB=https://git.08h.ru/alex/hlamingo
set REPO_GIT=https://git.08h.ru/alex/hlamingo.git
set BRANCH=main
set TARGET=hlamingo

echo ========================================
echo    hlamingo - installer
echo ========================================
echo.
echo Source: %REPO_WEB%
echo Target: %CD%\%TARGET%
echo.

cd /d "%~dp0"

rem ---------- 1. Python ----------
where python >nul 2>&1
if errorlevel 1 (
    echo [ERROR] Python not found in PATH.
    echo.
    echo Install Python 3.9 or newer from https://www.python.org/downloads/
    echo IMPORTANT: check "Add python.exe to PATH" in the installer.
    echo Then run this file again.
    pause
    exit /b 1
)
for /f "delims=" %%v in ('python -c "import sys;print(sys.version.split()[0])"') do set PYVER=%%v
echo [1/4] Python %PYVER% found.

rem ---------- 2. Download ----------
if exist "%TARGET%\hlamingo\app.py" goto :update

where git >nul 2>&1
if errorlevel 1 goto :download_zip

echo [2/4] Cloning with git...
git clone --branch %BRANCH% "%REPO_GIT%" "%TARGET%"
if errorlevel 1 (
    echo       git clone failed, falling back to zip download.
    goto :download_zip
)
goto :setup

:download_zip
echo [2/4] Downloading archive (git not available or clone failed)...
rem PowerShell does the work: no curl/tar dependency on older Windows.
rem Make sure we actually got an archive: a server that requires signing in
rem answers with an HTML login page, and unpacking would fail confusingly.
powershell -NoProfile -ExecutionPolicy Bypass -Command ^
  "$ErrorActionPreference='Stop';" ^
  "$url='%REPO_WEB%/archive/%BRANCH%.zip';" ^
  "$zip=Join-Path $env:TEMP 'hlamingo-src.zip';" ^
  "$tmp=Join-Path $env:TEMP 'hlamingo-unpack';" ^
  "Write-Host ('      ' + $url);" ^
  "Invoke-WebRequest -Uri $url -OutFile $zip -UseBasicParsing -MaximumRedirection 0 -ErrorAction SilentlyContinue;" ^
  "if (-not (Test-Path $zip)) { throw 'server returned nothing' }" ^
  "$head=[IO.File]::ReadAllBytes($zip) | Select-Object -First 2;" ^
  "if ($head[0] -ne 0x50 -or $head[1] -ne 0x4B) { Remove-Item $zip -Force; throw 'the server sent a web page instead of an archive - the repository is private or requires signing in' }" ^
  "if (Test-Path $tmp) { Remove-Item -Recurse -Force $tmp }" ^
  "Expand-Archive -Path $zip -DestinationPath $tmp -Force;" ^
  "$root=Get-ChildItem $tmp -Directory | Select-Object -First 1;" ^
  "if (-not $root) { throw 'archive looks empty' }" ^
  "Move-Item $root.FullName (Join-Path (Get-Location) '%TARGET%');" ^
  "Remove-Item -Recurse -Force $tmp, $zip"
if errorlevel 1 (
    echo.
    echo [ERROR] Download failed.
    echo.
    echo Possible reasons:
    echo   - %REPO_WEB% is not reachable from this computer;
    echo   - the repository is private, or the server requires signing in
    echo     to view anything. In that case download the project manually
    echo     and run setup.cmd inside it.
    pause
    exit /b 1
)
goto :setup

:update
echo [2/4] Already downloaded - updating.
where git >nul 2>&1
if not errorlevel 1 (
    if exist "%TARGET%\.git" (
        pushd "%TARGET%"
        git pull --ff-only
        popd
    )
)

rem ---------- 3. venv and dependencies ----------
:setup
if not exist "%TARGET%\requirements.txt" (
    echo [ERROR] Download looks incomplete: requirements.txt is missing.
    pause
    exit /b 1
)
pushd "%TARGET%"

echo [3/4] Creating virtual environment and installing dependencies...
if not exist "venv" python -m venv venv
if errorlevel 1 (
    echo [ERROR] Could not create venv.
    popd
    pause
    exit /b 1
)
venv\Scripts\python.exe -m pip install --upgrade pip --quiet
venv\Scripts\python.exe -m pip install -r requirements.txt --quiet
if errorlevel 1 (
    echo [ERROR] Dependency installation failed.
    popd
    pause
    exit /b 1
)

rem ---------- 4. Ollama address ----------
echo.
echo [4/4] Where is Ollama running?
echo       Enter to accept the default (this computer).
echo       Otherwise type the address of the machine on your network,
echo       for example: http://192.168.1.50:11434
echo.
set OLLAMA_ADDR=
set /p OLLAMA_ADDR="Ollama URL [http://localhost:11434]: "
if "%OLLAMA_ADDR%"=="" set OLLAMA_ADDR=http://localhost:11434

rem Build the local config from the example file, so the user sees the other
rem settings with explanations next to the Ollama address.
rem
rem Done with labels, not an if/else block: cmd mis-parses a block that holds
rem rem-lines and a caret-continued PowerShell call, and reports only
rem "The syntax of the command is incorrect".
if exist ".env" goto :env_exists

rem -Encoding UTF8 is required: without it PowerShell 5.1 reads the file in the
rem system codepage and the Russian comments turn into mojibake.
powershell -NoProfile -Command ^
  "$src = if (Test-Path '.env.example') { Get-Content '.env.example' -Encoding UTF8 } else { @('OLLAMA_HOST=') };" ^
  "$out = $src -replace '^\s*#?\s*OLLAMA_HOST=.*', 'OLLAMA_HOST=%OLLAMA_ADDR%';" ^
  "if (-not ($out -match '^OLLAMA_HOST=')) { $out += 'OLLAMA_HOST=%OLLAMA_ADDR%' }" ^
  "Set-Content -Path '.env' -Value $out -Encoding UTF8"
if not exist ".env" echo OLLAMA_HOST=%OLLAMA_ADDR%>.env
echo       Saved to .env: OLLAMA_HOST=%OLLAMA_ADDR%
goto :env_done

:env_exists
echo       .env already exists - left as is. Edit it by hand if needed.

:env_done

rem Check whether Ollama actually answers, and report in plain language.
venv\Scripts\python.exe -c "from hlamingo import ollama, config; print('    Ollama ' + config.OLLAMA_HOST + (' otvechaet.' if ollama.check() else ' NE otvechaet - prilozhenie zapustitsya, no bez razbora fraz.'))"

echo.
echo ========================================
echo    Done.
echo ========================================
echo.
echo Start the app:   %CD%\start.cmd
echo Run tests:       %CD%\tests\run.cmd
echo.
echo A shortcut named "hlamingo" is on your Desktop.
powershell -NoProfile -Command ^
  "$s=(New-Object -ComObject WScript.Shell).CreateShortcut([IO.Path]::Combine([Environment]::GetFolderPath('Desktop'),'hlamingo.lnk'));" ^
  "$s.TargetPath=(Join-Path (Get-Location) 'start.cmd');" ^
  "$s.WorkingDirectory=(Get-Location).Path;" ^
  "$s.Description='hlamingo - where my stuff is';" ^
  "$s.Save()" 2>nul

popd
echo.
set RUNNOW=
set /p RUNNOW="Start it now? [Y/n]: "
if /i "%RUNNOW%"=="n" goto :end
rem Full path, not a bare name: depending on the shell that launched the
rem installer, a relative .cmd name may not resolve.
pushd "%TARGET%"
call "%CD%\start.cmd"
popd

:end
endlocal