# Module Logger - Gestion des logs console + fichier

$script:LogFile = $null
$script:Stopwatch = $null
$script:Stats = @{
    AutomatesTotal    = 0
    AutomatesError    = 0
    OutputsProcessed  = 0
}

function Initialize-Logger {
    [CmdletBinding()]
    param()

    $timestamp = Get-Date -Format "yyyy-MM-dd_HH\hmm"
    $script:LogFile = Join-Path (Get-Location) "dali_$timestamp.log"
    New-Item -ItemType File -Path $script:LogFile -Force | Out-Null

    $script:Stopwatch = [System.Diagnostics.Stopwatch]::StartNew()

    $script:Stats = @{
        AutomatesTotal    = 0
        AutomatesError    = 0
        OutputsProcessed  = 0
    }

    Write-Log -Message "Logger initialise - fichier: $($script:LogFile)" -Level INFO
}

function Write-Log {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)]
        [string]$Message,

        [ValidateSet("INFO", "WARN", "ERROR", "SUCCESS")]
        [string]$Level = "INFO"
    )

    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    $line = "[$timestamp] [$Level] $Message"

    # Couleur console selon le niveau
    switch ($Level) {
        "INFO"    { Write-Host $line -ForegroundColor Cyan }
        "WARN"    { Write-Host $line -ForegroundColor Yellow }
        "ERROR"   { Write-Host $line -ForegroundColor Red }
        "SUCCESS" { Write-Host $line -ForegroundColor Green }
    }

    # Ecriture fichier
    if ($script:LogFile) {
        Add-Content -Path $script:LogFile -Value $line -Encoding UTF8
    }
}

function Update-Stats {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)]
        [ValidateSet("AutomatesTotal", "AutomatesError", "OutputsProcessed")]
        [string]$Counter,

        [int]$Increment = 1
    )

    $script:Stats[$Counter] += $Increment
}

function Write-Summary {
    [CmdletBinding()]
    param()

    $script:Stopwatch.Stop()
    $duration = $script:Stopwatch.Elapsed

    Write-Log -Message "========== RESUME ==========" -Level INFO
    Write-Log -Message "Automates traites : $($script:Stats.AutomatesTotal)" -Level INFO
    Write-Log -Message "Automates en erreur : $($script:Stats.AutomatesError)" -Level $(if ($script:Stats.AutomatesError -gt 0) { "WARN" } else { "INFO" })
    Write-Log -Message "Outputs traites : $($script:Stats.OutputsProcessed)" -Level INFO
    Write-Log -Message "Duree totale : $($duration.ToString('hh\:mm\:ss\.ff'))" -Level INFO
    Write-Log -Message "============================" -Level INFO
}

function Get-LogDirectory {
    [CmdletBinding()]
    param()

    if ($script:LogFile) {
        return Split-Path $script:LogFile -Parent
    }
    return $null
}

Export-ModuleMember -Function Initialize-Logger, Write-Log, Update-Stats, Write-Summary, Get-LogDirectory