package seasonsview

import "git.haelnorr.com/h/oslstats/internal/db"

// groupSeriesByRound groups playoff series by their round field
func groupSeriesByRound(series []*db.PlayoffSeries) map[string][]*db.PlayoffSeries {
	grouped := make(map[string][]*db.PlayoffSeries)
	for _, s := range series {
		grouped[s.Round] = append(grouped[s.Round], s)
	}
	return grouped
}

// getRoundOrder returns the display order of rounds for a given format
func getRoundOrder(format db.PlayoffFormat) []string {
	switch format {
	case db.PlayoffFormat5to6:
		return []string{
			"upper_bracket",
			"lower_bracket",
			"upper_final",
			"lower_final",
			"grand_final",
		}
	case db.PlayoffFormat7to9:
		return []string{
			"quarter_final",
			"semi_final",
			"third_place",
			"grand_final",
		}
	case db.PlayoffFormat10to15:
		return []string{
			"qualifying_final",
			"elimination_final",
			"semi_final",
			"preliminary_final",
			"third_place",
			"grand_final",
		}
	default:
		return nil
	}
}

// formatRoundName converts a round slug to a human-readable name
func formatRoundName(round string) string {
	switch round {
	case "upper_bracket":
		return "Upper Bracket"
	case "lower_bracket":
		return "Lower Bracket"
	case "upper_final":
		return "Upper Final"
	case "lower_final":
		return "Lower Final"
	case "quarter_final":
		return "Quarter Finals"
	case "semi_final":
		return "Semi Finals"
	case "qualifying_final":
		return "Qualifying Finals"
	case "elimination_final":
		return "Elimination Finals"
	case "preliminary_final":
		return "Preliminary Finals"
	case "third_place":
		return "Third Place Playoff"
	case "grand_final":
		return "Grand Final"
	default:
		return round
	}
}

// formatLabel returns a human-readable format description
func formatLabel(format db.PlayoffFormat) string {
	switch format {
	case db.PlayoffFormat5to6:
		return "Top 5 qualify"
	case db.PlayoffFormat7to9:
		return "Top 6 qualify"
	case db.PlayoffFormat10to15:
		return "Top 8 qualify"
	default:
		return string(format)
	}
}