first

internal/toc/renderer.go

@@ -0,0 +1,64 @@
+package toc
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (m *Manager) Render() (string, error) {
+	categories, err := m.storage.ListCategories()
+	if err != nil {
+		return "", err
+	}
+
+	entriesByCategory, err := m.storage.GetEntriesByCategory()
+	if err != nil {
+		return "", err
+	}
+
+	var sb strings.Builder
+	sb.WriteString("📚 **频道目录**\n")
+	sb.WriteString("━━━━━━━━━━━━━━━\n\n")
+
+	if len(categories) == 0 {
+		sb.WriteString("_暂无分类_")
+		return sb.String(), nil
+	}
+
+	for _, cat := range categories {
+		entries := entriesByCategory[cat.Name]
+
+		sb.WriteString(fmt.Sprintf("📁 **%s**", cat.Name))
+		if len(entries) > 0 {
+			sb.WriteString(fmt.Sprintf(" (%d)", len(entries)))
+		}
+		sb.WriteString("\n")
+
+		if len(entries) == 0 {
+			sb.WriteString("   _暂无内容_\n")
+		} else {
+			for _, entry := range entries {
+				sb.WriteString(fmt.Sprintf("   • [%s](%s)\n", escapeMarkdown(entry.Title), entry.Link))
+			}
+		}
+		sb.WriteString("\n")
+	}
+
+	sb.WriteString("━━━━━━━━━━━━━━━\n")
+	sb.WriteString("_自动生成_")
+
+	return sb.String(), nil
+}
+
+func escapeMarkdown(s string) string {
+	replacer := strings.NewReplacer(
+		"[", "\\[",
+		"]", "\\]",
+		"(", "\\(",
+		")", "\\)",
+		"*", "\\*",
+		"_", "\\_",
+		"`", "\\`",
+	)
+	return replacer.Replace(s)
+}