#Requires -Version 5.1
# =============================================================================
#  MEPRO IT AUTO-DEPLOY SCRIPT
#  PT Meprofarm - Corporate IT Deployment Automation
#  Author  : IT Department
#  Version : 1.0
#  Deskripsi: Script otomatisasi deployment software dan konfigurasi Windows
#             untuk lingkungan kerja PT Meprofarm.
# =============================================================================

# --- Global: Matikan progress bar bawaan PowerShell & Invoke-WebRequest ---
$ProgressPreference = 'SilentlyContinue'

# Jalankan sebagai Administrator, jika belum, restart dengan elevasi
if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(
        [Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Write-Warning "Script membutuhkan hak Administrator. Melakukan elevasi..."
    Start-Process -FilePath "powershell.exe" `
        -ArgumentList "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" `
        -Verb RunAs
    exit
}

# =============================================================================
# REGION: HELPER FUNCTIONS
# =============================================================================

function Write-Header {
    # Fungsi untuk menampilkan header ASCII art utama
    Clear-Host
    $banner = @"

  ███╗   ███╗███████╗██████╗ ██████╗  ██████╗     ██╗████████╗
  ████╗ ████║██╔════╝██╔══██╗██╔══██╗██╔═══██╗    ██║╚══██╔══╝
  ██╔████╔██║█████╗  ██████╔╝██████╔╝██║   ██║    ██║   ██║   
  ██║╚██╔╝██║██╔══╝  ██╔═══╝ ██╔══██╗██║   ██║    ██║   ██║   
  ██║ ╚═╝ ██║███████╗██║     ██║  ██║╚██████╔╝    ██║   ██║   
  ╚═╝     ╚═╝╚══════╝╚═╝     ╚═╝  ╚═╝ ╚═════╝     ╚═╝   ╚═╝   
"@
    Write-Host $banner -ForegroundColor Cyan
    Write-Host ("=" * 70) -ForegroundColor DarkCyan
    Write-Host "   AUTO-DEPLOY SYSTEM  |  PT MEPROFARM  |  IT DEPARTMENT" -ForegroundColor Yellow
    Write-Host ("=" * 70) -ForegroundColor DarkCyan
    Write-Host ""
}

function Write-Step {
    # Fungsi untuk menampilkan langkah proses dengan format konsisten
    param([string]$Message)
    Write-Host "[>>] " -ForegroundColor DarkYellow -NoNewline
    Write-Host $Message -ForegroundColor White
}

function Write-OK {
    # Fungsi untuk menampilkan status sukses
    param([string]$Message)
    Write-Host "  [OK] " -ForegroundColor Green -NoNewline
    Write-Host $Message -ForegroundColor Gray
}

function Write-Fail {
    # Fungsi untuk menampilkan status gagal
    param([string]$Message)
    Write-Host "  [!!] " -ForegroundColor Red -NoNewline
    Write-Host $Message -ForegroundColor DarkRed
}

function Write-Info {
    # Fungsi untuk menampilkan informasi umum
    param([string]$Message)
    Write-Host "  [--] " -ForegroundColor Cyan -NoNewline
    Write-Host $Message -ForegroundColor DarkGray
}

function Write-SectionBanner {
    # Fungsi untuk menampilkan pemisah section
    param([string]$Title)
    Write-Host ""
    Write-Host ("─" * 70) -ForegroundColor DarkGray
    Write-Host "  ◆ $Title" -ForegroundColor Magenta
    Write-Host ("─" * 70) -ForegroundColor DarkGray
    Write-Host ""
}

function Pause-ForUser {
    Write-Host ""
    Write-Host "  Tekan [ENTER] untuk melanjutkan..." -ForegroundColor DarkGray
    $null = Read-Host
}

# =============================================================================
# REGION 1: WINGET BOOTSTRAPPER
# Cek apakah winget tersedia; jika tidak, install otomatis dari GitHub Release
# =============================================================================

function Invoke-WingetBootstrap {
    Write-SectionBanner "WINGET BOOTSTRAPPER — Prerequisite Check"

    # Cek apakah winget sudah tersedia di sistem
    $wingetCmd = Get-Command "winget" -ErrorAction SilentlyContinue
    if ($wingetCmd) {
        Write-OK "Winget ditemukan: $($wingetCmd.Source)"
        return
    }

    Write-Step "Winget tidak ditemukan. Memulai proses instalasi otomatis..."

    try {
        # URL resmi Microsoft dari GitHub untuk App Installer (winget)
        $wingetUrl    = "https://github.com/microsoft/winget-cli/releases/latest/download/Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle"
        $wingetInstaller = "$env:TEMP\WingetInstaller.msixbundle"

        Write-Info "Mengunduh App Installer dari GitHub Microsoft..."
        Invoke-WebRequest -Uri $wingetUrl -OutFile $wingetInstaller -UseBasicParsing -ErrorAction Stop

        Write-Info "Menginstal App Installer (Winget)..."
        Add-AppxPackage -Path $wingetInstaller -ErrorAction Stop

        Write-OK "Winget berhasil diinstal."
        Remove-Item -Path $wingetInstaller -Force -ErrorAction SilentlyContinue
    }
    catch {
        Write-Fail "Gagal menginstal Winget secara otomatis."
        Write-Fail "Detail error: $_"
        Write-Host ""
        Write-Host "  Silakan install 'App Installer' dari Microsoft Store secara manual," -ForegroundColor Yellow
        Write-Host "  lalu jalankan script ini kembali." -ForegroundColor Yellow
        Pause-ForUser
        exit 1
    }
}

# =============================================================================
# REGION 2: SOFTWARE INSTALLATION ENGINE
# Fungsi untuk install per-aplikasi via Winget dengan error handling
# =============================================================================

function Install-ViaWinget {
    param(
        [string]$PackageId,
        [string]$DisplayName,
        [string]$Source = "winget"   # bisa "winget" atau "msstore"
    )

    Write-Step "Menginstal: $DisplayName ($PackageId)..."

    try {
        # Jalankan winget install dengan flag silent dan tanpa interaksi
        $result = winget install --id $PackageId `
            --source $Source `
            --silent `
            --accept-package-agreements `
            --accept-source-agreements `
            --disable-interactivity `
            2>&1

        # Cek exit code dari winget
        if ($LASTEXITCODE -eq 0 -or $LASTEXITCODE -eq -1978335189) {
            # Exit code -1978335189 (0x8A150011) = sudah terinstal, dianggap OK
            Write-OK "$DisplayName — Selesai."
        }
        else {
            Write-Fail "$DisplayName — Winget keluar dengan kode: $LASTEXITCODE"
        }
    }
    catch {
        Write-Fail "Exception saat menginstal $DisplayName : $_"
    }
}

function Install-SparkMessenger {
    # Fungsi khusus untuk instalasi Spark Messenger 2.7.7 dari server internal
    Write-Step "Menginstal: Spark Messenger 2.7.7 (Internal)..."

    $sparkUrl       = "https://nekahost.com/installer/spark_2_7_7.exe"
    $sparkInstaller = "$env:TEMP\spark_setup.exe"

    try {
        # Unduh installer Spark dari server internal Meprofarm
        Write-Info "Mengunduh Spark Messenger dari server internal..."
        Invoke-WebRequest -Uri $sparkUrl -OutFile $sparkInstaller -UseBasicParsing -ErrorAction Stop

        Write-Info "Menjalankan silent install Spark Messenger..."
        # Argument "-q" = quiet/silent mode
        $proc = Start-Process -FilePath $sparkInstaller `
            -ArgumentList "-q" `
            -Wait `
            -PassThru `
            -ErrorAction Stop

        if ($proc.ExitCode -eq 0 -or $proc.ExitCode -eq 1) {
            Write-OK "Spark Messenger 2.7.7 — Selesai."
        }
        else {
            Write-Fail "Spark Messenger installer keluar dengan kode: $($proc.ExitCode)"
        }
    }
    catch {
        Write-Fail "Gagal menginstal Spark Messenger: $_"
    }
    finally {
        # Hapus file installer sementara
        if (Test-Path $sparkInstaller) {
            Remove-Item -Path $sparkInstaller -Force -ErrorAction SilentlyContinue
            Write-Info "File installer sementara telah dihapus."
        }
    }
}

# =============================================================================
# REGION: KATEGORI APLIKASI
# Definisi daftar aplikasi per-kategori
# =============================================================================

function Install-Category-Browser {
    Write-SectionBanner "KATEGORI: BROWSER"
    Install-ViaWinget -PackageId "Google.Chrome"   -DisplayName "Google Chrome"
    Install-ViaWinget -PackageId "Mozilla.Firefox" -DisplayName "Mozilla Firefox"
}

function Install-Category-Office {
    Write-SectionBanner "KATEGORI: OFFICE SUITE"
    Install-ViaWinget -PackageId "Apache.OpenOffice"      -DisplayName "Apache OpenOffice"
    Install-ViaWinget -PackageId "Kingsoft.WPSOffice"     -DisplayName "Kingsoft WPS Office"
}

function Install-Category-Utility {
    Write-SectionBanner "KATEGORI: UTILITY"
    Install-ViaWinget -PackageId "7zip.7zip"                     -DisplayName "7-Zip"
    Install-ViaWinget -PackageId "Adobe.Acrobat.Reader.64-bit"   -DisplayName "Adobe Acrobat Reader DC (64-bit)"
    Install-ViaWinget -PackageId "Mozilla.Thunderbird"           -DisplayName "Mozilla Thunderbird"
}

function Install-Category-Security {
    Write-SectionBanner "KATEGORI: SECURITY (Microsoft Store)"
    # AVG AntiVirus Free menggunakan ID Microsoft Store
    Install-ViaWinget -PackageId "XP8BX2DWV7TF50" -DisplayName "AVG AntiVirus Free" -Source "msstore"
}

function Install-Category-Internal {
    Write-SectionBanner "KATEGORI: APLIKASI INTERNAL MEPROFARM"
    Install-SparkMessenger
}

# =============================================================================
# REGION 3: WINDOWS TWEAKS ENGINE
# Konfigurasi fitur Windows dan Visual Effects via Registry & DISM
# =============================================================================

function Invoke-WindowsTweaks {
    Write-SectionBanner "WINDOWS TWEAKS & KONFIGURASI SISTEM"

    # ── 1. Aktifkan SMB 1.0 Client (untuk kompatibilitas legacy file sharing) ──
    Write-Step "Mengaktifkan SMB 1.0 Client..."
    try {
        Enable-WindowsOptionalFeature -Online -FeatureName "SMB1Protocol-Client" `
            -NoRestart -ErrorAction Stop | Out-Null
        Write-OK "SMB 1.0 Client — Diaktifkan."
    }
    catch {
        Write-Fail "Gagal mengaktifkan SMB 1.0 Client: $_"
    }

    # ── 2. Install WMIC via Windows Capability ──
    Write-Step "Menginstal WMIC (Windows Management Instrumentation Command-line)..."
    try {
        Add-WindowsCapability -Online -Name "WMIC~~~~" -ErrorAction Stop | Out-Null
        Write-OK "WMIC — Berhasil diinstal."
    }
    catch {
        # WMIC mungkin sudah terinstal, tangani gracefully
        if ($_.Exception.Message -match "already installed" -or $LASTEXITCODE -eq 0) {
            Write-OK "WMIC — Sudah terinstal sebelumnya."
        }
        else {
            Write-Fail "Gagal menginstal WMIC: $_"
        }
    }

    # ── 3. Set Wallpaper ke Default Windows Dark Theme ──
    Write-Step "Mengatur wallpaper ke tema gelap default Windows..."
    try {
        # Path standar wallpaper Windows default
        $wallpaperPath = "$env:SystemRoot\Web\Wallpaper\Windows\img0.jpg"

        if (Test-Path $wallpaperPath) {
            # Update registry agar wallpaper tercatat
            Set-ItemProperty -Path "HKCU:\Control Panel\Desktop" `
                -Name "Wallpaper" -Value $wallpaperPath -ErrorAction Stop

            # Panggil SystemParametersInfo via P/Invoke untuk apply langsung tanpa restart
            Add-Type @"
using System;
using System.Runtime.InteropServices;
public class WallpaperHelper {
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
}
"@ -ErrorAction SilentlyContinue

            # SPI_SETDESKWALLPAPER = 20, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE = 3
            [WallpaperHelper]::SystemParametersInfo(20, 0, $wallpaperPath, 3) | Out-Null
            Write-OK "Wallpaper — Diatur ke: $wallpaperPath"
        }
        else {
            Write-Fail "File wallpaper tidak ditemukan: $wallpaperPath"
        }
    }
    catch {
        Write-Fail "Gagal mengatur wallpaper: $_"
    }

    # ── 4. Performance Tweaks — Visual Effects Custom ──
    Write-Step "Menerapkan Visual Effects Custom (Best Performance + exceptions)..."

    $visualEffectsPath = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\VisualEffects"
    $desktopPath       = "HKCU:\Control Panel\Desktop"
    $advancedPath      = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced"

    try {
        # Pastikan key registry ada
        if (-not (Test-Path $visualEffectsPath)) {
            New-Item -Path $visualEffectsPath -Force | Out-Null
        }

        # VisualFXSetting = 3 → Custom
        Set-ItemProperty -Path $visualEffectsPath -Name "VisualFXSetting" -Value 3 -Type DWord -ErrorAction Stop

        # ── Matikan SEMUA animasi / efek visual untuk performa terbaik ──
        # UserPreferencesMask = byte array yang mengontrol efek visual Windows
        # 0x90,0x12,0x03,0x80,0x10,0x00,0x00,0x00 = minimal effects
        $minimalMask = [byte[]](0x90,0x12,0x03,0x80,0x10,0x00,0x00,0x00)
        Set-ItemProperty -Path $desktopPath -Name "UserPreferencesMask" `
            -Value $minimalMask -Type Binary -ErrorAction Stop

        # ── AKTIFKAN kembali 4 efek yang dikecualikan ──

        # 1. Smooth edges of screen fonts (FontSmoothing = 2 = ClearType)
        Set-ItemProperty -Path $desktopPath -Name "FontSmoothing" -Value 2 -Type String -ErrorAction Stop
        Set-ItemProperty -Path $desktopPath -Name "FontSmoothingType" -Value 2 -Type DWord -ErrorAction Stop
        Write-Info "[+] Font Smoothing (ClearType) — Diaktifkan"

        # 2. Show thumbnails instead of icons (IconsOnly = 0 = tampilkan thumbnail)
        Set-ItemProperty -Path $advancedPath -Name "IconsOnly" -Value 0 -Type DWord -ErrorAction Stop
        Write-Info "[+] Thumbnail Preview — Diaktifkan"

        # 3. Show translucent selection rectangle (ListviewAlphaSelect = 1)
        Set-ItemProperty -Path $advancedPath -Name "ListviewAlphaSelect" -Value 1 -Type DWord -ErrorAction Stop
        Write-Info "[+] Translucent Selection Rectangle — Diaktifkan"

        # 4. Show window contents while dragging (DragFullWindows = 1)
        Set-ItemProperty -Path $desktopPath -Name "DragFullWindows" -Value 1 -Type String -ErrorAction Stop
        Write-Info "[+] Show Window Contents While Dragging — Diaktifkan"

        Write-OK "Visual Effects Custom — Konfigurasi selesai."

        # ── Restart Explorer agar semua perubahan visual langsung berlaku ──
        Write-Step "Merestart Windows Explorer untuk menerapkan perubahan..."
        try {
            Stop-Process -Name "explorer" -Force -ErrorAction SilentlyContinue
            Start-Sleep -Milliseconds 1500
            # Explorer akan restart sendiri; jika tidak, paksa start
            $explorerProc = Get-Process "explorer" -ErrorAction SilentlyContinue
            if (-not $explorerProc) {
                Start-Process "explorer.exe"
            }
            Write-OK "Windows Explorer — Berhasil direstart."
        }
        catch {
            Write-Fail "Gagal merestart Explorer: $_"
        }
    }
    catch {
        Write-Fail "Gagal menerapkan Visual Effects tweaks: $_"
    }
}

# =============================================================================
# REGION: MENU PILIHAN KATEGORI MANUAL (untuk Opsi 2)
# =============================================================================

function Show-CategoryMenu {
    Write-SectionBanner "PILIHAN KATEGORI MANUAL"
    Write-Host "  Pilih kategori yang ingin diinstal (Y/N):" -ForegroundColor Yellow
    Write-Host ""

    # Browser
    Write-Host "  [1] Browser (Google Chrome, Mozilla Firefox)" -ForegroundColor Cyan
    $browser = (Read-Host "      Install Browser? [Y/N]").Trim().ToUpper()

    # Office
    Write-Host ""
    Write-Host "  [2] Office Suite (Apache OpenOffice, WPS Office)" -ForegroundColor Cyan
    $office = (Read-Host "      Install Office? [Y/N]").Trim().ToUpper()

    # Utility
    Write-Host ""
    Write-Host "  [3] Utility (7-Zip, Adobe Reader, Thunderbird)" -ForegroundColor Cyan
    $utility = (Read-Host "      Install Utility? [Y/N]").Trim().ToUpper()

    # Security
    Write-Host ""
    Write-Host "  [4] Security (AVG AntiVirus Free)" -ForegroundColor Cyan
    $security = (Read-Host "      Install Security? [Y/N]").Trim().ToUpper()

    # Internal
    Write-Host ""
    Write-Host "  [5] Internal (Spark Messenger 2.7.7)" -ForegroundColor Cyan
    $internal = (Read-Host "      Install Aplikasi Internal? [Y/N]").Trim().ToUpper()

    Write-Host ""
    Write-Host ("─" * 70) -ForegroundColor DarkGray
    Write-Step "Memulai instalasi kategori yang dipilih..."
    Write-Host ""

    if ($browser  -eq "Y") { Install-Category-Browser }
    if ($office   -eq "Y") { Install-Category-Office }
    if ($utility  -eq "Y") { Install-Category-Utility }
    if ($security -eq "Y") { Install-Category-Security }
    if ($internal -eq "Y") { Install-Category-Internal }
}

# =============================================================================
# REGION 5: FINISHING TOUCH
# Tampilkan pesan selesai dan dialog MessageBox native Windows
# =============================================================================

function Show-CompletionDialog {
    Write-Host ""
    Write-Host ("═" * 70) -ForegroundColor Green
    Write-Host ""
    Write-Host "   ██████╗  ██████╗ ███╗   ██╗███████╗ ██╗" -ForegroundColor Green
    Write-Host "   ██╔══██╗██╔═══██╗████╗  ██║██╔════╝ ██║" -ForegroundColor Green
    Write-Host "   ██║  ██║██║   ██║██╔██╗ ██║█████╗   ██║" -ForegroundColor Green
    Write-Host "   ██║  ██║██║   ██║██║╚██╗██║██╔══╝   ╚═╝" -ForegroundColor Green
    Write-Host "   ██████╔╝╚██████╔╝██║ ╚████║███████╗ ██╗" -ForegroundColor Green
    Write-Host "   ╚═════╝  ╚═════╝ ╚═╝  ╚═══╝╚══════╝ ╚═╝" -ForegroundColor Green
    Write-Host ""
    Write-Host "            SEMUA INSTALASI SELESAI" -ForegroundColor Green
    Write-Host ""
    Write-Host ("═" * 70) -ForegroundColor Green
    Write-Host ""

    # Tampilkan native Windows MessageBox menggunakan Windows Forms
    # Assembly harus di-load terlebih dahulu
    Add-Type -AssemblyName System.Windows.Forms -ErrorAction SilentlyContinue

    $msgTitle   = "Mepro IT Auto-Deploy — Selesai"
    $msgContent = "Instalasi & Konfigurasi Selesai!`n`nHarap Restart PC Anda untuk mengaktifkan SMB 1.0 dan menerapkan semua perubahan sistem."

    [System.Windows.Forms.MessageBox]::Show(
        $msgContent,
        $msgTitle,
        [System.Windows.Forms.MessageBoxButtons]::OK,
        [System.Windows.Forms.MessageBoxIcon]::Information
    ) | Out-Null

    Write-Host "  Terima kasih telah menggunakan Mepro IT Auto-Deploy." -ForegroundColor DarkGray
    Write-Host "  Harap restart PC Anda segera.`n" -ForegroundColor Yellow
}

# =============================================================================
# REGION: MAIN ENTRYPOINT — MENU UTAMA
# =============================================================================

function Main {
    # ── Step 1: Jalankan Winget Bootstrapper ──
    Write-Header
    Invoke-WingetBootstrap

    # ── Step 2: Tampilkan Menu Utama via CLI ──
    Write-Header

    Write-Host "  Selamat datang di sistem deployment otomatis PT Meprofarm." -ForegroundColor Gray
    Write-Host "  Pastikan koneksi internet aktif sebelum melanjutkan.`n" -ForegroundColor DarkGray

    Write-Host ("─" * 70) -ForegroundColor DarkGray
    Write-Host ""
    Write-Host "   [1]  Install Semua Aplikasi & Tweak Windows" -ForegroundColor White
    Write-Host "   [2]  Pilih Kategori Aplikasi Manual" -ForegroundColor White
    Write-Host "   [3]  Cuma Eksekusi Tweak Windows & Setting" -ForegroundColor White
    Write-Host "   [Q]  Keluar" -ForegroundColor DarkGray
    Write-Host ""
    Write-Host ("─" * 70) -ForegroundColor DarkGray
    Write-Host ""

    $choice = (Read-Host "  >> Masukkan pilihan Anda [1/2/3/Q]").Trim().ToUpper()

    switch ($choice) {

        "1" {
            # ── Opsi 1: Install semua kategori + jalankan semua tweak ──
            Write-Header
            Write-Host "  Mode: INSTALL SEMUA APLIKASI & TWEAK WINDOWS`n" -ForegroundColor Yellow

            Install-Category-Browser
            Install-Category-Office
            Install-Category-Utility
            Install-Category-Security
            Install-Category-Internal
            Invoke-WindowsTweaks
        }

        "2" {
            # ── Opsi 2: Pilih kategori secara manual (tidak include tweak) ──
            Write-Header
            Write-Host "  Mode: PILIHAN KATEGORI APLIKASI MANUAL`n" -ForegroundColor Yellow

            Show-CategoryMenu
        }

        "3" {
            # ── Opsi 3: Hanya jalankan Windows Tweaks & Setting ──
            Write-Header
            Write-Host "  Mode: TWEAK WINDOWS & KONFIGURASI SISTEM SAJA`n" -ForegroundColor Yellow

            Invoke-WindowsTweaks
        }

        "Q" {
            Write-Host "`n  Keluar dari program. Sampai jumpa!`n" -ForegroundColor DarkGray
            exit 0
        }

        default {
            Write-Host "`n  [!!] Pilihan tidak valid. Harap masukkan 1, 2, 3, atau Q.`n" -ForegroundColor Red
            Pause-ForUser
            Main  # Rekursif kembali ke menu utama
            return
        }
    }

    # ── Step 5: Tampilkan Pesan & Dialog Selesai ──
    Show-CompletionDialog
}

# ── Jalankan fungsi utama ──
Main