feat: 站点单页、时间线导入与行级 BBCode 短代码

首页右栏接入单页入口与公告置顶/全部页；Markdown 编辑器支持可视化时间线与 Git 导入；隐藏块改为 [hide]/[timeline] 命名闭合，并修复单页/公告 GORM 更新只改 updated_at 的问题。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-17 19:52:06 +08:00
parent 2aacf99a49
commit a83276060f
52 changed files with 5073 additions and 648 deletions
--- a/backend/markdown/legacy_rewrite.go
+++ b/backend/markdown/legacy_rewrite.go
@@ -0,0 +1,158 @@
+package markdown
+
+import (
+	"strconv"
+	"strings"
+)
+
+// RewriteLegacyDirectives 将旧式 :::hide / :::timeline / 裸 ::: 改写为行级 BBCode。
+// 幂等：已是 BBCode 的内容原样返回（若无旧标记）。代码围栏内不改写。
+func RewriteLegacyDirectives(content string) string {
+	if content == "" {
+		return content
+	}
+	if !strings.Contains(content, ":::") {
+		return content
+	}
+	lines := splitLines(content)
+	var out []string
+	inCode := false
+	i := 0
+	for i < len(lines) {
+		trimmed := strings.TrimSpace(lines[i])
+		if strings.HasPrefix(trimmed, "```") {
+			inCode = !inCode
+			out = append(out, lines[i])
+			i++
+			continue
+		}
+		if inCode {
+			out = append(out, lines[i])
+			i++
+			continue
+		}
+
+		if kind, pts, pwd, locked, ok := parseLegacyHideOpen(trimmed); ok {
+			bodyLines := make([]string, 0)
+			j := i + 1
+			innerCode := false
+			found := false
+			for j < len(lines) {
+				inner := strings.TrimSpace(lines[j])
+				if strings.HasPrefix(inner, "```") {
+					innerCode = !innerCode
+					bodyLines = append(bodyLines, lines[j])
+					j++
+					continue
+				}
+				if innerCode {
+					bodyLines = append(bodyLines, lines[j])
+					j++
+					continue
+				}
+				if inner == ":::" {
+					found = true
+					break
+				}
+				bodyLines = append(bodyLines, lines[j])
+				j++
+			}
+			out = append(out, openMarkerLine(kind, pts, pwd, locked))
+			out = append(out, bodyLines...)
+			if found {
+				out = append(out, "[/hide]")
+				i = j + 1
+			} else {
+				// 未闭合：仍写出已转换开标记与正文，避免丢内容
+				i = j
+			}
+			continue
+		}
+
+		if trimmed == ":::timeline" || strings.HasPrefix(trimmed, ":::timeline ") {
+			bodyLines := make([]string, 0)
+			j := i + 1
+			innerCode := false
+			found := false
+			for j < len(lines) {
+				inner := strings.TrimSpace(lines[j])
+				if strings.HasPrefix(inner, "```") {
+					innerCode = !innerCode
+					bodyLines = append(bodyLines, lines[j])
+					j++
+					continue
+				}
+				if innerCode {
+					bodyLines = append(bodyLines, lines[j])
+					j++
+					continue
+				}
+				if inner == ":::" {
+					found = true
+					break
+				}
+				bodyLines = append(bodyLines, lines[j])
+				j++
+			}
+			out = append(out, "[timeline]")
+			out = append(out, bodyLines...)
+			if found {
+				out = append(out, "[/timeline]")
+				i = j + 1
+			} else {
+				i = j
+			}
+			continue
+		}
+
+		out = append(out, lines[i])
+		i++
+	}
+	return strings.Join(out, "\n")
+}
+
+// parseLegacyHideOpen 解析旧式 :::hide <kind> [arg] [locked]
+func parseLegacyHideOpen(trimmed string) (kind string, points int, password string, locked bool, ok bool) {
+	if !strings.HasPrefix(trimmed, ":::hide") {
+		return "", 0, "", false, false
+	}
+	rest := strings.TrimSpace(trimmed[len(":::hide"):])
+	if rest == "" {
+		return "", 0, "", false, false
+	}
+	parts := strings.Fields(rest)
+	if len(parts) == 0 {
+		return "", 0, "", false, false
+	}
+	kind = parts[0]
+	switch kind {
+	case HideKindLogin, HideKindReply, HideKindPoints, HideKindPassword:
+	default:
+		return "", 0, "", false, false
+	}
+	idx := 1
+	if kind == HideKindPoints {
+		if idx >= len(parts) {
+			return "", 0, "", false, false
+		}
+		n, err := strconv.Atoi(parts[idx])
+		if err != nil {
+			return "", 0, "", false, false
+		}
+		points = n
+		idx++
+	} else if kind == HideKindPassword {
+		if idx < len(parts) && parts[idx] != "locked" {
+			password = parts[idx]
+			idx++
+		}
+	}
+	for ; idx < len(parts); idx++ {
+		if parts[idx] == "locked" {
+			locked = true
+		} else {
+			return "", 0, "", false, false
+		}
+	}
+	return kind, points, password, locked, true
+}