package tui

import "fmt"

// --- 辅助函数 ---

func renderField(label, value string) string {
	if value == "" {
		value = "-"
	}
	return fieldLabelStyle.Render(label) + fieldValueStyle.Render(value) + "\n"
}

func renderFlowField(flow string) string {
	if flow == "" {
		flow = "-"
	}
	label := fieldLabelStyle.Render("Flow")
	if flow != "writing" && flow != "-" && flow != "" {
		return label + highlightValueStyle.Render(flow) + "\n"
	}
	return label + fieldValueStyle.Render(flow) + "\n"
}

func renderHighlightField(label, value string) string {
	return fieldLabelStyle.Render(label) + highlightValueStyle.Render(value) + "\n"
}

func formatNumber(n int) string {
	if n == 0 {
		return "0"
	}
	s := fmt.Sprintf("%d", n)
	result := make([]byte, 0, len(s)+len(s)/3)
	for i, c := range s {
		if i > 0 && (len(s)-i)%3 == 0 {
			result = append(result, ',')
		}
		result = append(result, byte(c))
	}
	return string(result)
}

func truncate(s string, max int) string {
	runes := []rune(s)
	if len(runes) <= max {
		return s
	}
	if max < 4 {
		return string(runes[:max])
	}
	return string(runes[:max-3]) + "..."
}