Add install.ps1

install.ps1

@@ -0,0 +1,42 @@
+# Agent Hub's install: installs the newest Agent Hub for this user and opens it; running it again updates (HUB-10).
+# Its line: irm https://git.bengles.se/agent-hub/releases-test/raw/branch/main/install.ps1 | iex
+# AGENT_HUB_SETUP_ARGS, when set, is added to the setup's arguments, e.g. --no-start.
+& {
+    $ErrorActionPreference = 'Stop'
+    $ProgressPreference = 'SilentlyContinue'
+    $v = $PSVersionTable.PSVersion
+    if ($v.Major -lt 5 -or ($v.Major -eq 5 -and $v.Minor -lt 1) -or ($PSVersionTable.PSEdition -eq 'Core' -and -not $IsWindows)) {
+        Write-Host 'This line installs Agent Hub on Windows, from PowerShell 5.1 or later. On Linux, run the page''s curl line.' -ForegroundColor Red
+        return
+    }
+    if ($PSVersionTable.PSEdition -ne 'Core') {
+        [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
+    }
+    $exe = Join-Path $env:TEMP 'agent-hub-setup.exe'
+    Write-Host 'Downloading Agent Hub...'
+    try {
+        Invoke-WebRequest -Uri 'https://git.bengles.se/agent-hub/releases-test/releases/download/latest/agent-hub-setup.exe' -OutFile $exe -UseBasicParsing
+    } catch {
+        $failure = $_
+        $status = 0
+        try { $status = [int]$failure.Exception.Response.StatusCode } catch {}
+        if ($status -eq 0) {
+            try { Invoke-WebRequest -Uri 'https://git.bengles.se/agent-hub/releases-test/releases/download/latest/agent-hub-setup.exe' -Method Head -UseBasicParsing | Out-Null }
+            catch { try { $status = [int]$_.Exception.Response.StatusCode } catch {} }
+        }
+        if ($status -eq 404) { Write-Host 'Can''t download Agent Hub from git.bengles.se/agent-hub/releases-test: it has no release yet. Try again in a minute.' -ForegroundColor Red }
+        else { Write-Host ('Can''t download Agent Hub from git.bengles.se/agent-hub/releases-test: ' + $failure.Exception.Message + ' ' + 'Try again in a minute.') -ForegroundColor Red }
+        return
+    }
+    $saved = @{}
+    $extra = @("$env:AGENT_HUB_SETUP_ARGS" -split '\s+' | Where-Object { $_ })
+    Write-Host 'Installing Agent Hub...'
+    try {
+        & $exe @extra
+        $code = $LASTEXITCODE
+    } finally {
+        foreach ($name in $saved.Keys) { [Environment]::SetEnvironmentVariable($name, $saved[$name]) }
+    }
+    Remove-Item $exe -ErrorAction SilentlyContinue
+    if ($code -ne 0) { Write-Host 'Agent Hub''s setup stopped: see above.' -ForegroundColor Red }
+}