#Requires -Version 5.1
Set-StrictMode -Version 2.0
$ErrorActionPreference = 'Stop'
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

$Repository = 'https://i.3001.co.kr'
$ExpectedCliSha256 = 'bf1da57cc190bf0ad5e5189e834cbe4f36814eea7a8243eb22f09fab2be6dfb6'
$Root = Join-Path $env:LOCALAPPDATA 'Programs\3001'
$App = Join-Path $Root 'app'
$Bin = Join-Path $Root 'bin'
$Downloads = Join-Path $env:USERPROFILE 'Downloads'
$Stamp = Get-Date -Format 'yyyyMMdd-HHmmss'
$LogPath = Join-Path $Downloads "3001_BOOTSTRAP_$Stamp.log"
$TempFile = Join-Path $env:TEMP "3001-cli-$([guid]::NewGuid().ToString('N')).ps1"
$TranscriptStarted = $false

try {
    Start-Transcript -LiteralPath $LogPath -Force | Out-Null
    $TranscriptStarted = $true

    Write-Host ''
    Write-Host ('=' * 64)
    Write-Host ' 3001 CLI 설치'
    Write-Host ('=' * 64)
    Write-Host "저장소: $Repository"
    Write-Host "설치 위치: $Root"
    Write-Host ''

    foreach ($path in @($Root, $App, $Bin)) {
        if (-not (Test-Path -LiteralPath $path)) {
            New-Item -ItemType Directory -Path $path -Force | Out-Null
        }
    }

    $cliUri = "$Repository/3001.ps1"
    Write-Host "다운로드: $cliUri"
    Invoke-WebRequest -Uri $cliUri -OutFile $TempFile -UseBasicParsing

    $ActualCliSha256 = (Get-FileHash -LiteralPath $TempFile -Algorithm SHA256).Hash.ToLowerInvariant()
    Write-Host "예상 SHA-256: $ExpectedCliSha256"
    Write-Host "실제 SHA-256: $ActualCliSha256"

    if ($ActualCliSha256 -ne $ExpectedCliSha256) {
        throw '3001 CLI의 SHA-256 검증에 실패했습니다. 설치를 중단합니다.'
    }

    $cliPath = Join-Path $App '3001.ps1'
    Move-Item -LiteralPath $TempFile -Destination $cliPath -Force

    $launcherPath = Join-Path $Bin '3001.cmd'
    $launcher = "@echo off`r`npowershell.exe -NoLogo -NoProfile -ExecutionPolicy Bypass -File `"$cliPath`" %*`r`n"
    Set-Content -LiteralPath $launcherPath -Value $launcher -Encoding ASCII

    $userPath = [Environment]::GetEnvironmentVariable('Path', 'User')
    $pathParts = @()
    if (-not [string]::IsNullOrWhiteSpace($userPath)) {
        $pathParts = @($userPath -split ';' | Where-Object { $_ })
    }

    $alreadyRegistered = $false
    foreach ($part in $pathParts) {
        if ($part.TrimEnd('\') -ieq $Bin.TrimEnd('\')) {
            $alreadyRegistered = $true
            break
        }
    }

    if (-not $alreadyRegistered) {
        $newUserPath = if ([string]::IsNullOrWhiteSpace($userPath)) {
            $Bin
        }
        else {
            "$userPath;$Bin"
        }

        [Environment]::SetEnvironmentVariable('Path', $newUserPath, 'User')
    }

    if (@($env:Path -split ';') -notcontains $Bin) {
        $env:Path = "$Bin;$env:Path"
    }

    Write-Host ''
    Write-Host '3001 CLI 설치 완료' -ForegroundColor Green
    Write-Host '바로 사용할 명령:'
    Write-Host '  3001 list'
    Write-Host '  3001 pcdiag'
    Write-Host ''
    & $launcherPath version
}
catch {
    Write-Host ''
    Write-Host "설치 실패: $($_.Exception.Message)" -ForegroundColor Red
    throw
}
finally {
    if (Test-Path -LiteralPath $TempFile) {
        Remove-Item -LiteralPath $TempFile -Force -ErrorAction SilentlyContinue
    }

    if ($TranscriptStarted) {
        try {
            Stop-Transcript | Out-Null
        }
        catch {
        }
    }

    Write-Host ''
    Write-Host "로그 파일: $LogPath"
}