// Hook: AfterPowerPoint
// Brand every slide with a consistent footer and visible slide numbers.
//
// The footer is "<JobName>" or "<JobName> - <Region>" when the Region
// parameter is set. Useful when one template is shared across business units
// that maintain their own master variants and may have the footer placeholder
// turned off.

if (Presentation == null || Presentation.Slides.Count == 0)
{
    AddWarning($"Presentation for '{OutputName}' is empty; nothing to brand.");
    return;
}

var hasRegion = Parameters.TryGetValue("Region", out var region) && !string.IsNullOrWhiteSpace(region);
var footerText = hasRegion ? $"{JobName} - {region}" : JobName;

foreach (var slide in Presentation.Slides)
{
    var hf = slide.HeaderFooterManager;
    hf.SetFooterVisibility(true);
    hf.SetFooterText(footerText);
    hf.SetSlideNumberVisibility(true);
}

Logger.LogInformation($"Branded {Presentation.Slides.Count} slide(s) with footer '{footerText}'.");