# =========================================================================
# INSTALL-APPS.PS1 - Installation des applications via Winget
# Exécution en contexte SYSTEM lors du déploiement MDT
# =========================================================================

# =========================================================================
# 0. CONFIGURATION DU CONTEXTE ET VARIABLES DYNAMIQUES
# =========================================================================
$SystemRoot = $env:SystemRoot  # C:\Windows
$SystemDrive = $env:SystemDrive  # C:
$CurrentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
$IsSystem = $CurrentUser -like "*SYSTEM" -or $CurrentUser -like "*S-1-5-18"

Write-Host "========================================================" -ForegroundColor Cyan
Write-Host " CONFIGURATION CONTEXTE MDT"
Write-Host "========================================================" -ForegroundColor Cyan
Write-Host "Utilisateur: $CurrentUser (SYSTEM: $IsSystem)"
Write-Host "SystemRoot: $SystemRoot"
Write-Host "SystemDrive: $SystemDrive"

# =========================================================================
# 1. CONFIGURATION DU FICHIER LOG WINDOWS (Chemin dynamique)
# =========================================================================
$LogDirectory = Join-Path $SystemRoot "Logs\MDT_Apps"
if (!(Test-Path $LogDirectory)) {
    $null = New-Item -ItemType Directory -Force -Path $LogDirectory -ErrorAction SilentlyContinue
}

$DateStamp = Get-Date -Format "yyyyMMdd_HHmmss"
$LogPath = Join-Path $LogDirectory "Installation_Applications_$DateStamp.log"

Write-Host "Répertoire logs: $LogDirectory"

# Début de l'enregistrement
Start-Transcript -Path $LogPath -Append -Force

Write-Host "========================================================"
Write-Host " DEBUT DU SCRIPT D'INSTALLATION DES APPLICATIONS"
Write-Host " Fichier log : $LogPath"
Write-Host "========================================================"

# =========================================================================
# 2. CONFIGURATION DE L'ENVIRONNEMENT SYSTEM POUR WINGET
# =========================================================================
$WingetDataPath = Join-Path $SystemRoot "System32\config\systemprofile\AppData\Local\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState"

if (!(Test-Path $WingetDataPath)) {
    $null = New-Item -ItemType Directory -Force -Path $WingetDataPath -ErrorAction SilentlyContinue
}

$SettingsFile = Join-Path $WingetDataPath "settings.json"
$Settings = @'
{
    "telemetry": { "disabled": true },
    "security": { "anySource": true },
    "installBehavior": { "preferences": { "scope": "machine" } }
}
'@

try {
    $Settings | Out-File $SettingsFile -Encoding utf8 -Force
    Write-Host "Configuration Winget: OK"
}
catch {
    Write-Warning "Erreur configuration Winget: $($_.Exception.Message)"
}

# =========================================================================
# 3. VERIFICATION / UPGRADE WINGET V7
# =========================================================================
Write-Host ""
Write-Host "========================================================"
Write-Host " VERIFICATION WINGET V7"
Write-Host "========================================================"

try {
    $WingetVersion = & winget --version 2>$null
    Write-Host "Version actuelle: $WingetVersion"
    
    # Upgrade si nécessaire
    Write-Host "Tentative de mise à jour Winget..."
    & winget upgrade winget --accept-source-agreements --silent 2>$null | Out-Null
    Start-Sleep -Seconds 2
    
    $NewVersion = & winget --version 2>$null
    Write-Host "Version après upgrade: $NewVersion"
}
catch {
    Write-Warning "Erreur lors de la gestion Winget: $($_.Exception.Message)"
}

# Activation des manifests locaux
try {
    & winget settings --enable LocalManifestFiles 2>$null | Out-Null
    Write-Host "Manifests locaux: Activés"
}
catch {
    Write-Warning "Erreur activation manifests: $($_.Exception.Message)"
}

# =========================================================================
# 4. RECHERCHE ET TRAITEMENT DES APPLICATIONS
# =========================================================================
Write-Host ""
Write-Host "========================================================"
Write-Host " RECHERCHE DES MANIFESTS D'APPLICATION"
Write-Host "========================================================"

$AppsFolder = Join-Path $PSScriptRoot "Apps"
Write-Host "Dossier des applications: $AppsFolder"

if (!(Test-Path $AppsFolder)) {
    Write-Error "Dossier Applications introuvable: $AppsFolder"
    Stop-Transcript
    exit 1
}

$Manifests = Get-ChildItem -Path $AppsFolder -Filter "*.yaml" -ErrorAction SilentlyContinue
$TotalApps = $Manifests.Count

Write-Host "Manifests trouvés: $TotalApps"

if ($TotalApps -eq 0) {
    Write-Warning "Aucun fichier manifest .yaml trouvé dans $AppsFolder"
    Stop-Transcript
    exit 1
}

# =========================================================================
# 5. FONCTION DE VERIFICATION D'INSTALLATION
# =========================================================================
function Test-IsAppInstalled {
    [CmdletBinding()]
    param([string]$AppName)
    
    try {
        $Paths = @(
            "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*",
            "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*"
        )
        $Result = Get-ItemProperty $Paths -ErrorAction SilentlyContinue | `
                  Where-Object { $_.DisplayName -and $_.DisplayName -like "*$AppName*" }
        return ($null -ne $Result)
    }
    catch {
        Write-Warning "Erreur lors de la vérification $AppName : $($_.Exception.Message)"
        return $false
    }
}

# =========================================================================
# 6. PIPELINE DE TRAITEMENT DES APPLICATIONS
# =========================================================================
Write-Host ""
Write-Host "========================================================"
Write-Host " INSTALLATION DES APPLICATIONS"
Write-Host "========================================================"

$Global:CurrentAppIndex = 0

$Manifests | ForEach-Object {
    $Global:CurrentAppIndex++
    $Manifest = $_
    
    $CleanName = ($Manifest.BaseName -split "_")[0]
    $Sanitized = $CleanName -replace '[^a-zA-Z0-9]', ''
    
    Write-Host "[$Global:CurrentAppIndex/$TotalApps] Vérification : $CleanName" -ForegroundColor Cyan

    if (Test-IsAppInstalled -AppName $CleanName) {
        Write-Host "  -> PASSER : Déjà installé." -ForegroundColor Yellow
        return
    }

    $InstallerFile = Get-ChildItem -Path $AppsFolder | Where-Object { 
        $_.Extension -in ".exe", ".msi" -and `
        ($_.Name -ilike "*$Sanitized*" -or $_.Name -ilike "*$CleanName*")
    } | Select-Object -First 1
    
    if (!$InstallerFile) {
        Write-Host "  -> ÉCHEC : Fichier installateur introuvable pour $CleanName" -ForegroundColor Red
        return
    }

    $FullFileName = $InstallerFile.Name.ToLower()
    $Executable = $InstallerFile.FullName
    $Arguments = "/S"

    # =========================================================================
    # Détermination des arguments selon le type de fichier
    # =========================================================================
    if ($InstallerFile.Extension -eq ".msi") {
        $Executable = "msiexec.exe"
        $Arguments = "/i `"$($InstallerFile.FullName)`" /qn /norestart"
        
        if (Get-Process -Name "msiexec" -ErrorAction SilentlyContinue) {
            Write-Host "  -> Nettoyage processus msiexec..." -ForegroundColor DarkYellow
            Stop-Process -Name "msiexec" -Force -ErrorAction SilentlyContinue
            Start-Sleep -Seconds 2
        }
    }
    else {
        switch -regex ($FullFileName) {
            "7z|7zip"   { $Arguments = "/S" }
            "notepad"   { $Arguments = "/S" }
            "vlc"       { $Arguments = "/S" }
            "audacity"  { $Arguments = "/VERYSILENT /SUPPRESSMSGBOXES /NORESTART" }
            "python"    { $Arguments = "/quiet InstallAllUsers=1 PrependPath=1 Include_test=0" }
            default     { $Arguments = "/S" }
        }
    }

    # =========================================================================
    # Exécution de l'installation
    # =========================================================================
    try {
        Write-Host "  -> Installation: $($InstallerFile.Name)" -ForegroundColor White
        Write-Host "     Exécutable: $Executable"
        Write-Host "     Arguments: $Arguments"
        
        $Process = Start-Process -FilePath $Executable -ArgumentList $Arguments `
                   -NoNewWindow -Wait -PassThru -ErrorAction Stop
        
        $ExitCode = $Process.ExitCode
        if ($ExitCode -eq 0 -or $ExitCode -eq 3010) {
            Write-Host "  -> SUCCÈS (Code: $ExitCode)`n" -ForegroundColor Green
        } 
        else {
            Write-Host "  -> ÉCHEC. Code erreur: $ExitCode" -ForegroundColor Red
            Write-Host "     Args: $Arguments`n" -ForegroundColor DarkRed
        }
    } 
    catch {
        Write-Host "  -> ERREUR CRITIQUE: $($_.Exception.Message)`n" -ForegroundColor Red
    }
}

# =========================================================================
# 7. FINALISATION
# =========================================================================
Write-Host "========================================================"
Write-Host " TRAITEMENT TERMINÉ"
Write-Host "========================================================"
Write-Host "Logs disponibles: $LogPath"

Stop-Transcript