package app

import (
	"fmt"

	"gitea.maximumdirect.net/eric/narratio/internal/config"
	"gitea.maximumdirect.net/eric/narratio/internal/manifest"
)

func effectiveConfigProvenance(cfg *config.Config) *manifest.EffectiveConfigProvenance {
	if cfg == nil || cfg.Pipeline == nil {
		return nil
	}
	provenance := &manifest.EffectiveConfigProvenance{
		EffectiveConfigDigest: config.EffectivePipelineDigest(cfg.Pipeline),
	}
	if selected, ok := config.SelectedPipelineOverlay(cfg.Pipeline); ok {
		provenance.SelectedOverlay = &manifest.SelectedOverlayProvenance{
			Name:   selected.Name,
			Source: selected.Source,
		}
	}
	if provenance.SelectedOverlay == nil && provenance.EffectiveConfigDigest == "" {
		return nil
	}
	return provenance
}

func applyEffectiveConfigProvenance(m *manifest.Manifest, cfg *config.Config) {
	if m != nil {
		m.EffectiveConfig = effectiveConfigProvenance(cfg)
	}
}

func effectiveConfigSummary(cfg *config.Config) string {
	provenance := effectiveConfigProvenance(cfg)
	if provenance == nil {
		return "overlay=none digest=unavailable"
	}
	overlay := "none"
	if provenance.SelectedOverlay != nil {
		overlay = provenance.SelectedOverlay.Name + " (" + provenance.SelectedOverlay.Source + ")"
	}
	digest := provenance.EffectiveConfigDigest
	if digest == "" {
		digest = "unavailable"
	}
	return fmt.Sprintf("overlay=%s digest=%s", overlay, digest)
}

func persistedEffectiveConfigSummary(provenance *manifest.EffectiveConfigProvenance) string {
	if provenance == nil {
		return "overlay=none digest=unavailable"
	}
	overlay := "none"
	if provenance.SelectedOverlay != nil {
		overlay = provenance.SelectedOverlay.Name + " (" + provenance.SelectedOverlay.Source + ")"
	}
	digest := provenance.EffectiveConfigDigest
	if digest == "" {
		digest = "unavailable"
	}
	return fmt.Sprintf("overlay=%s digest=%s", overlay, digest)
}