# Downloads the WebView2 Runtime installers into windows\webview2_runtime\.
#
# build.spec bundles:
#   - MicrosoftEdgeWebview2Setup.exe              (~1.7 MB)  always
#   - MicrosoftEdgeWebView2RuntimeInstallerX64.exe (~203 MB) only if present
#
# The bootstrapper is the small online installer (it downloads the Runtime
# from Microsoft). Run this script with -Offline to also fetch the standalone
# installer for machines that have no internet access — note that it makes the
# built .exe about 200 MB larger.
#
# Usage:
#   .\download_runtime_installers.ps1
#   .\download_runtime_installers.ps1 -Offline

[CmdletBinding()]
param(
    [switch]$Offline
)

$ErrorActionPreference = 'Stop'

$dest = Join-Path $PSScriptRoot 'webview2_runtime'
if (-not (Test-Path $dest)) {
    New-Item -ItemType Directory -Force -Path $dest | Out-Null
}

$bootstrapperUrl = 'https://go.microsoft.com/fwlink/p/?LinkId=2124703'
$standaloneUrl   = 'https://go.microsoft.com/fwlink/?linkid=2124701'  # x64

function Get-Installer {
    param([string]$Url, [string]$FileName, [string]$Label)

    $target = Join-Path $dest $FileName
    Write-Host "[INFO] Downloading $Label ..." -ForegroundColor Cyan
    Invoke-WebRequest -Uri $Url -OutFile $target -UseBasicParsing -MaximumRedirection 10

    $file = Get-Item -LiteralPath $target
    $sig = Get-AuthenticodeSignature -LiteralPath $target
    $sizeMb = [math]::Round($file.Length / 1MB, 1)

    Write-Host ("       {0}  {1} MB" -f $file.Name, $sizeMb)
    if ($sig.Status -eq 'Valid' -and $sig.SignerCertificate.Subject -like '*Microsoft*') {
        Write-Host "       signature: Valid (Microsoft)" -ForegroundColor Green
    }
    else {
        Write-Warning "       signature: $($sig.Status) — verify this download!"
    }
}

Get-Installer -Url $bootstrapperUrl -FileName 'MicrosoftEdgeWebview2Setup.exe' -Label 'Runtime bootstrapper (online)'

if ($Offline) {
    Get-Installer -Url $standaloneUrl -FileName 'MicrosoftEdgeWebView2RuntimeInstallerX64.exe' -Label 'Runtime standalone installer (offline, x64)'
    Write-Host ''
    Write-Host '[WARN] The standalone installer adds ~203 MB to the built .exe.' -ForegroundColor Yellow
}
else {
    Write-Host ''
    Write-Host '[INFO] Offline installer skipped. Re-run with -Offline to include it.' -ForegroundColor DarkGray
}

Write-Host ''
Write-Host "[OK] Installers are in $dest" -ForegroundColor Green
Write-Host '     Next: rebuild with  venv\Scripts\python.exe -m PyInstaller build.spec --clean --noconfirm'