# Installs or updates Instant Answer on Windows (PowerShell):
#   irm https://instant-answer.werkstatt.works/install.ps1 | iex
#
# The installer isn't code signed, so a browser download triggers a SmartScreen warning. Files
# downloaded by PowerShell aren't marked as coming from the internet, so it runs without one.
$ErrorActionPreference = 'Stop'
$ProgressPreference = 'SilentlyContinue' # Invoke-WebRequest is very slow with the progress bar.

$site = 'https://instant-answer.werkstatt.works'
$platform = 'windows-x86_64'

if (-not [Environment]::Is64BitOperatingSystem) {
    throw 'Instant Answer needs 64-bit Windows.'
}

$manifest = Invoke-RestMethod "$site/downloads/$platform/latest.json"
$installer = Join-Path ([IO.Path]::GetTempPath()) "InstantAnswerSetup-$($manifest.version).exe"

Write-Host "Downloading Instant Answer $($manifest.version)..."
Invoke-WebRequest $manifest.platforms.$platform.url -OutFile $installer -UseBasicParsing

Write-Host 'Installing...'
# /P: passive, shows progress only. Installs for the current user, no administrator rights needed.
Start-Process $installer -ArgumentList '/P' -Wait
Remove-Item $installer -ErrorAction SilentlyContinue

$app = Join-Path $env:LOCALAPPDATA 'Instant Answer\instant-answer.exe'
if (Test-Path $app) {
    Start-Process $app
    Write-Host "Installed Instant Answer $($manifest.version). It runs in the system tray and updates itself from now on."
} else {
    Write-Host "Installed Instant Answer $($manifest.version). Start it from the Start menu."
}