# Barvinca hosted MCP installer for Codex on Windows
Set-StrictMode -Version 3.0
$ErrorActionPreference = 'Stop'

$ServerName = 'barvinca'
$ServerUrl = 'https://mcp.barvinca.com/mcp'
$Scopes = if ([string]::IsNullOrWhiteSpace($env:BARVINCA_MCP_SCOPES)) { 'barvinca.read' } else { $env:BARVINCA_MCP_SCOPES }

$Codex = Get-Command codex -ErrorAction SilentlyContinue
if ($null -eq $Codex) {
  throw 'Codex CLI was not found. Install or update Codex, sign in, and run this installer again. See https://learn.chatgpt.com/docs/codex'
}

$AddHelp = (& $Codex.Source mcp add --help 2>&1 | Out-String)
if (-not $AddHelp.Contains('--oauth-resource')) {
  throw 'This Codex version is too old for Barvinca OAuth resource binding. Update Codex and run this installer again.'
}

Write-Host 'Barvinca MCP installer for Windows'
Write-Host "Codex: $($Codex.Source)"
Write-Host "Server: $ServerUrl"
Write-Host "Scopes: $Scopes"

$Existing = (& $Codex.Source mcp get $ServerName --json 2>$null | Out-String)
$ExistingExitCode = $LASTEXITCODE
if ($ExistingExitCode -eq 0) {
  if (-not $Existing.Contains($ServerUrl)) {
    throw "A different Codex MCP server already uses the name $ServerName. Review it with: codex mcp get $ServerName --json"
  }
  Write-Host 'The Barvinca endpoint is already configured; keeping the existing entry.'
} else {
  & $Codex.Source mcp add $ServerName --url $ServerUrl --oauth-resource $ServerUrl
  if ($LASTEXITCODE -ne 0) { throw 'Codex could not add the Barvinca MCP server.' }
}

Write-Host 'Opening browser authorization...'
& $Codex.Source mcp login $ServerName --scopes $Scopes
if ($LASTEXITCODE -ne 0) { throw 'Barvinca OAuth login did not complete.' }

Write-Host 'Verifying saved configuration...'
& $Codex.Source mcp get $ServerName --json
if ($LASTEXITCODE -ne 0) { throw 'Codex could not read the saved Barvinca configuration.' }
Write-Host 'Barvinca MCP setup is complete. Restart Codex before starting a new task.'