# Install OpenAI Codex Plugin for Claude Code (Windows)
# Idempotent - safe to re-run; auto-installs missing prereqs.
#
# Usage (PowerShell as Administrator):
#   $h=@{Authorization="token cadffcb0a6a3be728ac1ff619bb40c86588f6837"}
#   Set-ExecutionPolicy Bypass -Scope Process -Force
#   iwr "https://git.sensey24.ru/aibot777/unlimitedcoding/raw/branch/master/claude/install_codex_plugin.ps1" -OutFile "$env:TEMP\install_codex_plugin.ps1" -Headers $h
#   . "$env:TEMP\install_codex_plugin.ps1"

$ErrorActionPreference = "Continue"

$PLUGIN_NAME = "codex"
$MARKETPLACE_NAME = "openai-codex"
$MARKETPLACE_URL = "https://github.com/openai/codex-plugin-cc"
$CODEX_NPM = "@openai/codex"

Write-Host ""
Write-Host "  +------------------------------------------+" -ForegroundColor Cyan
Write-Host "  |  Codex Plugin for Claude Code installer  |" -ForegroundColor Cyan
Write-Host "  +------------------------------------------+" -ForegroundColor Cyan
Write-Host ""

function Test-Cmd($n) { return [bool](Get-Command $n -ErrorAction SilentlyContinue) }
function Refresh-Path {
    $env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") + ";" +
                [System.Environment]::GetEnvironmentVariable("Path","User")
}

# ---- 1. Prereqs ----

if (-not (Test-Cmd "node")) {
    Write-Host "  Node.js not found, installing via winget..." -ForegroundColor Yellow
    if (Test-Cmd "winget") {
        winget install OpenJS.NodeJS.LTS --accept-package-agreements --accept-source-agreements -e 2>$null
        Refresh-Path
    } else {
        Write-Host "  winget unavailable. Install Node.js manually: https://nodejs.org/" -ForegroundColor Red
        exit 1
    }
}
$nodeMajor = [int](((node --version 2>$null) -replace '^v','') -split '\.')[0]
if ($nodeMajor -lt 18) {
    Write-Host "  Node.js >= 18 required (found v$nodeMajor). Upgrade manually." -ForegroundColor Red
    exit 1
}
Write-Host "  Node.js v$nodeMajor.x OK" -ForegroundColor Green

if (-not (Test-Cmd "claude")) {
    Write-Host "  Claude Code CLI not found. Install it first:" -ForegroundColor Red
    Write-Host '    npm config set "@anthropic-ai:registry" "https://npm.sensey24.ru/"' -ForegroundColor Yellow
    Write-Host "    npm install -g @anthropic-ai/claude-code" -ForegroundColor Yellow
    exit 1
}
Write-Host ("  Claude Code: " + (claude --version 2>$null)) -ForegroundColor Green

if (-not (Test-Cmd "git")) {
    Write-Host "  git not found, installing via winget..." -ForegroundColor Yellow
    if (Test-Cmd "winget") {
        winget install Git.Git --accept-package-agreements --accept-source-agreements -e 2>$null
        Refresh-Path
    } else {
        Write-Host "  Install git manually: https://git-scm.com/download/win" -ForegroundColor Red
        exit 1
    }
}
Write-Host ("  git: " + (git --version)) -ForegroundColor Green

# ---- 2. Codex CLI ----

if (-not (Test-Cmd "codex")) {
    Write-Host "  Codex CLI not found, installing..." -ForegroundColor Cyan
    npm install -g $CODEX_NPM 2>&1 | Select-Object -Last 3
    Refresh-Path
}
$codexVer = (codex --version 2>$null) -replace '[^0-9.]+',' ' -split ' ' | Where-Object { $_ -match '^\d+\.\d+\.\d+' } | Select-Object -First 1
if (-not $codexVer) { $codexVer = "unknown" }
Write-Host "  Codex CLI v$codexVer" -ForegroundColor Green

# ---- 3. Marketplace ----

$marketList = claude plugin marketplace list 2>&1 | Out-String
if ($marketList -match $MARKETPLACE_NAME) {
    Write-Host "  Marketplace '$MARKETPLACE_NAME' already configured" -ForegroundColor Green
} else {
    Write-Host "  Adding marketplace: $MARKETPLACE_URL" -ForegroundColor Cyan
    claude plugin marketplace add $MARKETPLACE_URL 2>&1 | Select-Object -Last 3
}

# ---- 4. Plugin install / update ----

$pluginList = claude plugin list 2>&1 | Out-String
$fullName = "${PLUGIN_NAME}@${MARKETPLACE_NAME}"
if ($pluginList -match [regex]::Escape($fullName)) {
    Write-Host "  Plugin already installed - checking for updates..." -ForegroundColor Cyan
    claude plugin update $fullName 2>&1 | Select-Object -Last 3
} else {
    Write-Host "  Installing plugin: $fullName" -ForegroundColor Cyan
    claude plugin install $fullName 2>&1 | Select-Object -Last 5
}

# ---- 5. Verify ----

$verify = claude plugin list 2>&1 | Out-String
if ($verify -match [regex]::Escape($fullName)) {
    Write-Host ""
    Write-Host "  === Codex plugin installed! ===" -ForegroundColor Green
    Write-Host ""
    Write-Host "  Commands inside Claude Code:"
    Write-Host "    /codex:review              - standard code review"
    Write-Host "    /codex:adversarial-review  - design + assumption review"
    Write-Host "    /codex:rescue              - delegate task to Codex for fix"
    Write-Host "    /codex:status              - check background jobs"
    Write-Host "    /codex:result              - fetch job results"
    Write-Host "    /codex:cancel              - cancel a running job"
    Write-Host ""
    Write-Host "  Auth: run 'codex login' (or set OPENAI_API_KEY)" -ForegroundColor Yellow
    Write-Host ""
} else {
    Write-Host "  Plugin install verification failed. Run: claude plugin list" -ForegroundColor Red
    exit 1
}