#Requires -Version 5.1
<#
.SYNOPSIS
    Installs rmux (Rust terminal multiplexer) on Windows.

.DESCRIPTION
    Installs rmux natively by invoking the official install.ps1 script.
    This is a modern, fast Rust-based alternative to tmux.
    Official Guide: https://rmux.io/docs/get-started/#/installation

.EXAMPLE
    .\install-rmux.ps1

    # One-liner install from remote (works on Windows 10+):
    powershell -ExecutionPolicy Bypass -c "[Net.ServicePointManager]::SecurityProtocol=[Net.SecurityProtocolType]::Tls12; $t=\"$env:TEMP\install-rmux.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-rmux.ps1' -OutFile $t; & $t"

.NOTES
    If execution policy error occurs:
      Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
#>

[CmdletBinding()]
param()

# 최신 윈도우 환경 및 에러 발생 시 즉시 중단 설정
Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

# HTTPS 다운로드를 위한 TLS 1.2 강제 (PowerShell 5.1 호환성 보장)
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

# ────────────────────────────────────────────
# 유틸리티 함수 정의 (모든 안내 문구는 영문으로 작성)
# ────────────────────────────────────────────
function Write-Info    { param([string]$msg) Write-Host "[INFO]  $msg" -ForegroundColor Cyan }
    # 정보 출력
function Write-Warn    { param([string]$msg) Write-Host "[WARN]  $msg" -ForegroundColor Yellow }
    # 경고 출력
function Write-Success { param([string]$msg) Write-Host "[OK]    $msg" -ForegroundColor Green }
    # 성공 출력
function Write-Err     { param([string]$msg) Write-Host "[ERROR] $msg" -ForegroundColor Red; exit 1 }
    # 에러 출력 및 스크립트 강제 종료

# ────────────────────────────────────────────
# 메인 설치 프로세스
# ────────────────────────────────────────────
function Main {
    Write-Info "===== rmux CLI install script (Windows PowerShell) ====="
    Write-Info "Installing rmux CLI (Rust terminal multiplexer) natively..."

    # 이미 설치되어 있는지 확인
    $rmuxCmd = Get-Command rmux -ErrorAction SilentlyContinue
    if ($rmuxCmd) {
        $currentVer = & rmux --version 2>$null
        if (-not $currentVer) { $currentVer = "unknown" }
        Write-Info "rmux is already installed ($currentVer). Skipping installation."
    } else {
        try {
            Write-Info "Fetching and executing official installer from: https://rmux.io/install.ps1"
            
            # 공식 설치 ps1 스크립트를 다운로드 및 메모리 상에서 직접 호출 가동
            $installerScript = Invoke-RestMethod -Uri "https://rmux.io/install.ps1" -UseBasicParsing
            Invoke-Expression $installerScript

            Write-Success "rmux has been successfully installed!"
        } catch {
            Write-Err "Failed to install rmux CLI: $_"
        }
    }

    # 최종 가용성 검증
    $rmuxCmd = Get-Command rmux -ErrorAction SilentlyContinue
    if ($rmuxCmd) {
        Write-Success "rmux is available: $($rmuxCmd.Source)"
        Write-Info "Run command: rmux"
    } else {
        Write-Warn "rmux was not found in PATH after installation. You may need to restart your terminal window or refresh your PATH environment variable."
    }
}

# 예기치 못한 전체 프로세스 에러 감지를 위한 Trap 설정
trap {
    Write-Err "An unexpected error occurred during installation: $_"
}

Main