From 150ebe2d1a9d3c4bbcae2afb00651ed08722bdfc Mon Sep 17 00:00:00 2001
From: Liang Ding <d@b3log.org>
Date: Tue, 30 Aug 2022 16:53:21 +0800
Subject: [PATCH] =?UTF-8?q?:art:=20=E5=AF=BC=E5=87=BA=20PDF=20=E6=97=B6?=
 =?UTF-8?q?=E5=9D=97=E5=BC=95=E8=BD=AC=E6=8D=A2=E8=84=9A=E6=B3=A8=E4=BD=BF?=
 =?UTF-8?q?=E7=94=A8=E4=B9=A6=E7=AD=BE=E8=B7=B3=E8=BD=AC=20https://github.?=
 =?UTF-8?q?com/siyuan-note/siyuan/issues/5761?=
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---
 kernel/model/export.go | 44 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

diff --git a/kernel/model/export.go b/kernel/model/export.go
index c2d26b681..2f65c7f9c 100644
--- a/kernel/model/export.go
+++ b/kernel/model/export.go
@@ -352,6 +352,26 @@ func ExportHTML(id, savePath string, pdf bool) (name, dom string) {
 	}
 
 	tree = exportTree(tree, true)
+	//if pdf { // TODO: 导出 PDF 时块引转换脚注使用书签跳转 https://github.com/siyuan-note/siyuan/issues/5761
+	//	var footnotesDefs []*ast.Node
+	//	ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
+	//		if entering && ast.NodeFootnotesDef == n.Type {
+	//			footnotesDefs = append(footnotesDefs, n)
+	//		}
+	//		return ast.WalkContinue
+	//	})
+	//	for _, f := range footnotesDefs {
+	//		link := &ast.Node{Type: ast.NodeLink}
+	//		link.AppendChild(&ast.Node{Type: ast.NodeOpenBracket})
+	//		link.AppendChild(&ast.Node{Type: ast.NodeText, Tokens: []byte(" ")})
+	//		link.AppendChild(&ast.Node{Type: ast.NodeCloseBracket})
+	//		link.AppendChild(&ast.Node{Type: ast.NodeOpenParen})
+	//		link.AppendChild(&ast.Node{Type: ast.NodeLinkDest, Tokens: []byte("pdf-outline://footnotes-def-" + f.FootnotesRefId)})
+	//		link.AppendChild(&ast.Node{Type: ast.NodeCloseParen})
+	//		f.PrependChild(link)
+	//	}
+	//}
+
 	name = path.Base(tree.Path)
 	name = util.FilterFileName(name) // 导出 PDF、HTML 和 Word 时未移除不支持的文件名符号 https://github.com/siyuan-note/siyuan/issues/5614
 
@@ -469,8 +489,19 @@ func AddPDFOutline(id, p string) (err error) {
 	})
 
 	bms := map[string]*pdfcpu.Bookmark{}
+	footnotes := map[string]*pdfcpu.Bookmark{}
 	for _, link := range links {
 		linkID := link.URI[strings.LastIndex(link.URI, "/")+1:]
+		//if strings.HasPrefix(linkID, "footnotes-def-") { // 导出 PDF 时块引转换脚注使用书签跳转 https://github.com/siyuan-note/siyuan/issues/5761
+		//	footnotes[linkID] = &pdfcpu.Bookmark{
+		//		Title:    "Footnote [^" + linkID + "]",
+		//		PageFrom: link.Page,
+		//		AbsPos:   link.Rect.UR.Y,
+		//		Level:    7,
+		//	}
+		//	continue
+		//}
+
 		title := sql.GetBlock(linkID).Content
 		title, _ = url.QueryUnescape(title)
 		bm := &pdfcpu.Bookmark{
@@ -481,7 +512,7 @@ func AddPDFOutline(id, p string) (err error) {
 		bms[linkID] = bm
 	}
 
-	if 1 > len(bms) {
+	if 1 > len(bms) && 1 > len(footnotes) {
 		return
 	}
 
@@ -525,6 +556,17 @@ func AddPDFOutline(id, p string) (err error) {
 		}
 	}
 
+	//if 4 == Conf.Export.BlockRefMode { // 块引转脚注
+	//	var footnotesBms []*pdfcpu.Bookmark
+	//	for _, bm := range footnotes {
+	//		footnotesBms = append(footnotesBms, bm)
+	//	}
+	//	sort.Slice(footnotesBms, func(i, j int) bool { return footnotesBms[i].PageFrom < footnotesBms[j].PageFrom })
+	//	for _, bm := range footnotesBms {
+	//		topBms = append(topBms, bm)
+	//	}
+	//}
+
 	outFile := inFile + ".tmp"
 	err = api.AddBookmarksFile(inFile, outFile, topBms, nil)
 	if nil != err {