# IT-Tools launcher: irm <short-link> | iex
# Downloads it.bat to %TEMP% and runs it in a new console window.

$ErrorActionPreference = 'Stop'
$url  = 'https://it.accept-it.ru/bat'          # link to it.bat
$path = Join-Path $env:TEMP 'it.bat'

try {
    Write-Host 'Downloading IT-Tools...'
    if (Get-Command curl.exe -ErrorAction SilentlyContinue) {
        # curl.exe follows https -> http redirects without complaints
        & curl.exe -sSL --fail -o $path $url
        if ($LASTEXITCODE -ne 0) { throw "curl exit code $LASTEXITCODE" }
    } else {
        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
        Invoke-WebRequest -Uri $url -OutFile $path -UseBasicParsing
    }

    if (-not (Select-String -Path $path -Pattern '@echo off' -SimpleMatch -Quiet)) {
        throw 'Downloaded file is not it.bat (check the share link)'
    }

    Start-Process -FilePath 'cmd.exe' -ArgumentList "/c `"$path`""
}
catch {
    Write-Host "ERROR: $($_.Exception.Message)" -ForegroundColor Red
}