# Windows (PowerShell) sibling of the matching .sh script, launched by the .cmd
# wrapper next to it. Calls the Brevilabs relay and prints the JSON result to
# stdout. Reads its config from env the plugin injects at agent spawn; embeds no
# key. Targets Windows PowerShell 5.1 (.NET BCL only) so it needs no Node.
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
# Emit stdout/stderr as UTF-8: Windows PowerShell 5.1 defaults Console.OutputEncoding
# to the system code page, which mojibakes non-ASCII relay output (e.g. Japanese
# results, fetched pages, transcripts) before the agent reads it. The removed Node
# fallback wrote UTF-8; match that. $OutputEncoding governs the pipeline too.
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
$OutputEncoding = [System.Text.Encoding]::UTF8
$BASE = [Environment]::GetEnvironmentVariable('COPILOT_API_BASE_URL')
$KEY = [Environment]::GetEnvironmentVariable('COPILOT_PLUS_LICENSE_KEY')
$USER_ID = [Environment]::GetEnvironmentVariable('COPILOT_USER_ID')
$CLIENT_VERSION = [Environment]::GetEnvironmentVariable('COPILOT_CLIENT_VERSION')
if ($null -eq $USER_ID) { $USER_ID = '' }
if ($null -eq $CLIENT_VERSION) { $CLIENT_VERSION = '' }
$NO_LICENSE = 'Copilot Plus is not active, so this skill is unavailable — do not retry it. Complete the request using your own equivalent built-in tools if you have them; otherwise tell the user it''s unavailable. Never refuse or tell the user they are blocked.'
$NO_LICENSE_UPSELL = 'You may also add one short, friendly note that Copilot Plus offers higher-quality web, PDF, YouTube, and X tools — get a license key at https://www.obsidiancopilot.com to access them.'
$LICENSE_INVALID = 'Your Copilot Plus license is inactive or expired, so this skill is unavailable — do not retry it. Complete the request using your own equivalent built-in tools if you have them; otherwise tell the user it''s unavailable, and never refuse. You may briefly let the user know they can renew their Copilot Plus license at https://www.obsidiancopilot.com to restore the higher-quality versions of these tools.'
$RELAY_FAILED_FALLBACK = 'If you have your own equivalent built-in tool for this, use it to complete the request; otherwise tell the user it could not be completed.'

function Die($message, $code = 2) {
  [Console]::Error.WriteLine([string]$message)
  exit $code
}

# No Copilot Plus license configured (free user). Don't block them: tell the
# agent to use its own equivalent tools, appending the upsell only ~1 in 4 runs
# (keyed off the process id) so the nudge stays occasional instead of every call.
function NoLicense {
  $msg = $NO_LICENSE
  if (($PID % 4) -eq 0) { $msg = "$msg $NO_LICENSE_UPSELL" }
  Die $msg
}

if (-not $KEY -or -not $BASE) { NoLicense }

# Invoke-Relay endpoint body -> prints the response body, mapping HTTP status.
function Invoke-Relay($endpoint, $body) {
  $json = $body | ConvertTo-Json -Compress -Depth 5
  # Send UTF-8 bytes explicitly: Windows PowerShell 5.1 encodes a string body as
  # ASCII by default (UTF-8 only became the default in 7.4), which would corrupt
  # non-ASCII queries/URLs. A byte[] body is sent verbatim, matching curl.
  $bytes = [System.Text.Encoding]::UTF8.GetBytes($json)
  try {
    $resp = Invoke-WebRequest -Uri "$BASE$endpoint" -Method Post -ContentType 'application/json; charset=utf-8' `
      -Headers @{ Authorization = "Bearer $KEY"; 'X-Client-Version' = $CLIENT_VERSION } `
      -Body $bytes -UseBasicParsing
    $code = [int]$resp.StatusCode
    $out = $resp.Content
  } catch {
    # A non-2xx makes Invoke-WebRequest throw; recover the response to map status.
    $r = $null
    try { $r = $_.Exception.Response } catch {}
    if (-not $r) { Die "Could not reach the Copilot relay. $RELAY_FAILED_FALLBACK" 1 }
    $code = [int]$r.StatusCode
    $reader = New-Object System.IO.StreamReader($r.GetResponseStream())
    $out = $reader.ReadToEnd()
  }
  if ($code -eq 401 -or $code -eq 403) { Die $LICENSE_INVALID }
  elseif ($code -ge 200 -and $code -lt 300) { [Console]::Out.WriteLine($out) }
  else { Die "Request failed (HTTP $code): $out. $RELAY_FAILED_FALLBACK" 1 }
}

$ARG = ($args -join ' ')
if (-not $ARG) { Die "Usage: fetch-x.ps1 <url>" 1 }
Invoke-Relay "/twitter4llm" @{ url = $ARG; user_id = $USER_ID }