$ErrorActionPreference = "Stop"

$projectRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location -LiteralPath $projectRoot

& (Join-Path $projectRoot 'create_shortcut.ps1')

if (-not (Test-Path -LiteralPath ".venv\Scripts\python.exe")) {
    if (-not (Get-Command py -ErrorAction SilentlyContinue)) {
        throw "Python 3.11 or newer is required. Install Python from python.org, then run this script again."
    }
    & py -3 -m venv .venv
    if ($LASTEXITCODE -ne 0) { throw 'Virtual environment setup failed.' }
}

$dependencyHash = (Get-FileHash -LiteralPath 'requirements.txt' -Algorithm SHA256).Hash
$dependencyMarker = Join-Path $projectRoot '.venv\requirements.sha256'
$installedHash = if (Test-Path -LiteralPath $dependencyMarker) { (Get-Content -LiteralPath $dependencyMarker -Raw).Trim() } else { '' }
if ($installedHash -ne $dependencyHash) {
    & .venv\Scripts\python.exe -m pip install --disable-pip-version-check -r requirements.txt
    if ($LASTEXITCODE -ne 0) { throw 'Dependency installation failed.' }
    Set-Content -LiteralPath $dependencyMarker -Value $dependencyHash
}
& .venv\Scripts\python.exe web_ui.py