# Ping installer for Windows. Members run the line shown on their install page, in PowerShell:
#     irm https://pondletter.com/ping-install.ps1 -OutFile $env:TEMP\ping-install.ps1; & $env:TEMP\ping-install.ps1 <download-token>
# Read this first if you like; it is short. What it does, and nothing else:
#   1. installs uv (a Python package manager) for your user if you do not have it;
#   2. downloads Ping and its checksum list with your token, checks the SHA-256, and installs it with its own Python;
#   3. fetches your member key (tied to your membership email) into Ping's folder, where Ping picks it up once;
#   4. adds a Start menu shortcut and opens Ping.
# No administrator rights. Everything lives in your user folder.
# Uninstall:  uv tool uninstall ping ; Remove-Item -Recurse ~\.ping ; remove the Start menu shortcut "Ping"
# Your token is personal and expires in 30 minutes; the member key it fetches is tied to your account.
param([string]$Token = $env:PING_TOKEN, [string]$Base = "https://pondletter.com", [string]$Wheel = $env:PING_WHEEL,
      [string]$DataDir = (Join-Path $env:USERPROFILE ".ping"))
$ErrorActionPreference = "Stop"
$WheelName = "ping-latest-py3-none-any.whl"

function Say($m) { Write-Host $m -ForegroundColor Cyan }
function Fail($m) { Write-Host "Ping installer: $m" -ForegroundColor Red; exit 1 }
if (-not $Wheel -and -not $Token) { Fail "the download token is missing. Copy the whole command from your install page: $Base/install-ping/" }

$tmp = Join-Path $env:TEMP ("ping-" + [guid]::NewGuid().ToString("N"))
New-Item -ItemType Directory -Force $tmp | Out-Null

function Fetch($name, $dest) {
  try { Invoke-WebRequest "$Base/ping-dl/$Token/$name" -OutFile $dest -UseBasicParsing }
  catch {
    $code = $_.Exception.Response.StatusCode.value__
    if ($code -eq 410) { Fail "this install link has expired (they last 30 minutes). Open $Base/install-ping/ for a fresh one." }
    Fail "download of $name failed (HTTP $code). Open $Base/install-ping/ and copy the command again."
  }
}

# 1. uv
$uv = Get-Command uv -ErrorAction SilentlyContinue
if ($uv) { $uvPath = $uv.Source } else {
  Say "Installing uv (Python manager) for this user"
  $env:UV_NO_MODIFY_PATH = "1"
  irm https://astral.sh/uv/install.ps1 | iex | Out-Null
  $uvPath = Join-Path $env:USERPROFILE ".local\bin\uv.exe"
  if (-not (Test-Path $uvPath)) { $uvPath = Join-Path $env:LOCALAPPDATA "uv\uv.exe" }
  if (-not (Test-Path $uvPath)) { Fail "uv did not install. See https://docs.astral.sh/uv/ and run this again." }
}

# 2. Ping, verified against the published checksum
if (-not $Wheel) {
  Say "Downloading Ping"
  Fetch "SHA256SUMS" (Join-Path $tmp "SHA256SUMS")
  $sums = Get-Content (Join-Path $tmp "SHA256SUMS")
  # The list names the versioned file; uv needs the version in the filename, so save the download under that name.
  $realLine = $sums | Where-Object { $_ -match " ping-\d\S*\.whl$" } | Select-Object -First 1
  if (-not $realLine) { Fail "the checksum list did not name a versioned wheel." }
  $realName = ($realLine -split "\s+")[1]
  $line = $sums | Where-Object { $_ -match " $([regex]::Escape($WheelName))$" } | Select-Object -First 1
  if (-not $line) { Fail "the checksum list did not mention $WheelName." }
  $want = ($line -split "\s+")[0].ToLower()
  Fetch $WheelName (Join-Path $tmp $realName)
  $have = (Get-FileHash (Join-Path $tmp $realName) -Algorithm SHA256).Hash.ToLower()
  if ($want -ne $have) { Fail "checksum mismatch for $realName (expected $want, got $have). Nothing was installed." }
  Say "Checksum verified: $have ($realName)"
  $Wheel = Join-Path $tmp $realName
}
Say "Installing Ping with its own Python 3.12"
& $uvPath tool install --quiet --python 3.12 --force --reinstall "ping[app] @ $Wheel"
if ($LASTEXITCODE -ne 0) { Fail "uv could not install Ping (exit $LASTEXITCODE)." }
$bin = (& $uvPath tool dir --bin).Trim()
$pingApp = Join-Path $bin "ping-app.exe"
if (-not (Test-Path $pingApp)) { Fail "install finished but the launcher was not found at $pingApp" }

# 3. Your member key, handed to Ping once (it moves it into Windows Credential Manager and deletes the file)
if ($Token) {
  New-Item -ItemType Directory -Force $DataDir | Out-Null
  Fetch "member-key" (Join-Path $DataDir "member-key.bootstrap")
  Say "Member key fetched for this account"
}

# 4. Start menu shortcut
$programs = [Environment]::GetFolderPath("Programs")
$lnk = Join-Path $programs "Ping.lnk"
$shell = New-Object -ComObject WScript.Shell
$sc = $shell.CreateShortcut($lnk)
$sc.TargetPath = $pingApp
$sc.Description = "Ping: paper-trading bot for Kalshi, by Pondletter"
$iconPath = Join-Path $DataDir "icon.ico"
try { if ($Token) { Fetch "icon.ico" $iconPath; $sc.IconLocation = $iconPath } } catch {}
$sc.Save()
Say "Added Ping to the Start menu"

Remove-Item -Recurse -Force $tmp -ErrorAction SilentlyContinue

# 5. Open it
Say "Starting Ping (it opens in your browser; look for the icon in the system tray)"
Start-Process -FilePath $pingApp -WindowStyle Hidden
Write-Host ""
Write-Host "Done. To run Ping later: Start menu > Ping. To update: copy a fresh command from $Base/install-ping/ and run it again."
Write-Host "To uninstall: uv tool uninstall ping.  Where the code lives (read it any time): $((& $uvPath tool dir).Trim())\ping"