模板在线编辑与导出链路重构

backend/services/document_export.py

@@ -69,6 +69,77 @@ def _remove_unreferenced_headings(document: DocumentObject, referenced_anchors:
             _delete_block(block)
 
 
+def _ordered_unique_anchors(logs: list[dict]) -> list[str]:
+    ordered: list[str] = []
+    seen: set[str] = set()
+    for item in logs:
+        anchor = (item.get("anchor_title") or item.get("title") or "").strip()
+        if not anchor or anchor in seen:
+            continue
+        seen.add(anchor)
+        ordered.append(anchor)
+    return ordered
+
+
+def _reorder_heading_sections(document: DocumentObject, ordered_anchors: list[str]):
+    body = document.element.body
+    elements = list(body.iterchildren())
+    pre_heading: list = []
+    sections: list[tuple[str, list]] = []
+    found_heading = False
+    index = 0
+
+    while index < len(elements):
+        child = elements[index]
+        if isinstance(child, CT_P):
+            paragraph = Paragraph(child, document)
+            if _is_heading(paragraph):
+                found_heading = True
+                anchor = paragraph.text.strip()
+                section_elements = [child]
+                index += 1
+                while index < len(elements):
+                    current = elements[index]
+                    if isinstance(current, CT_P):
+                        current_paragraph = Paragraph(current, document)
+                        if _is_heading(current_paragraph):
+                            break
+                    section_elements.append(current)
+                    index += 1
+                sections.append((anchor, section_elements))
+                continue
+        if not found_heading:
+            pre_heading.append(child)
+        index += 1
+
+    if not sections:
+        return
+
+    section_map: dict[str, list[list]] = {}
+    for anchor, section_elements in sections:
+        section_map.setdefault(anchor, []).append(section_elements)
+
+    all_section_elements = [element for _, section_elements in sections for element in section_elements]
+    for element in all_section_elements:
+        parent = element.getparent()
+        if parent is not None:
+            parent.remove(element)
+
+    sect_pr = None
+    for child in list(body.iterchildren()):
+        if not isinstance(child, (CT_P, CT_Tbl)):
+            sect_pr = child
+            break
+
+    for anchor in ordered_anchors:
+        for section_elements in section_map.pop(anchor, []):
+            for element in section_elements:
+                if sect_pr is not None:
+                    sect_pr.addprevious(element)
+                else:
+                    body.append(element)
+
+
 def _clear_paragraph(paragraph: Paragraph):
     element = paragraph._element
     for child in list(element):
@@ -369,6 +440,8 @@ def _replace_section_group(
 
 def export_document_bytes(template_bytes: bytes, logs: list[dict]) -> bytes:
     document = Document(BytesIO(template_bytes))
+    ordered_anchors = _ordered_unique_anchors(logs)
+    _reorder_heading_sections(document, ordered_anchors)
 
     referenced_anchors: set[str] = set()
     for item in logs: