refine result preview layout

app/processor.py

@@ -48,6 +48,7 @@ def run_processing(
     result_name: str,
     show_not_match: bool,
     show_all_infos: bool,
+    preview_rows: int = 20,
 ) -> ProcessingResult:
     if mode not in {"auto", "v1", "v2"}:
         raise ProcessingError("处理模式不正确。")
@@ -123,6 +124,9 @@ def run_processing(
     if not xlsx_files:
         raise ProcessingError("处理完成但没有生成 Excel 文件，请检查数据结构。")
 
+    for xlsx_file in xlsx_files:
+        _remove_default_empty_sheet(xlsx_file)
+
     result_zip = job_dir / "result.zip"
     _create_result_zip(output_dir, result_zip)
     return ProcessingResult(
@@ -130,7 +134,7 @@ def run_processing(
         mode=selected_mode,
         output_dir=output_dir,
         zip_path=result_zip,
-        files=[_summarize_workbook(path, output_dir) for path in xlsx_files],
+        files=[_summarize_workbook(path, output_dir, preview_rows) for path in xlsx_files],
     )
 
 
@@ -143,6 +147,24 @@ def create_result_zip(job_dir: Path) -> Path:
     return result_zip
 
 
+def summarize_job(job_dir: Path, preview_rows: int = 20) -> ProcessingResult:
+    output_dir = job_dir / "output"
+    if not output_dir.exists():
+        raise ProcessingError("结果目录不存在。")
+    xlsx_files = sorted(output_dir.rglob("*.xlsx"))
+    if not xlsx_files:
+        raise ProcessingError("结果文件不存在。")
+    result_zip = job_dir / "result.zip"
+    mode = _read_mode(job_dir)
+    return ProcessingResult(
+        job_id=job_dir.name,
+        mode=mode,
+        output_dir=output_dir,
+        zip_path=result_zip,
+        files=[_summarize_workbook(path, output_dir, preview_rows) for path in xlsx_files],
+    )
+
+
 def find_output_file(job_dir: Path, relpath: str) -> Path:
     output_dir = (job_dir / "output").resolve()
     target = (output_dir / relpath).resolve()
@@ -153,6 +175,16 @@ def find_output_file(job_dir: Path, relpath: str) -> Path:
     return target
 
 
+def _read_mode(job_dir: Path) -> str:
+    log_path = job_dir / "process.log"
+    if not log_path.exists():
+        return "unknown"
+    first_line = log_path.read_text(encoding="utf-8", errors="replace").splitlines()[0:1]
+    if first_line and first_line[0].startswith("mode="):
+        return first_line[0].split("=", 1)[1]
+    return "unknown"
+
+
 def _safe_extract(zip_path: Path, target_dir: Path) -> None:
     try:
         with zipfile.ZipFile(zip_path) as zf:
@@ -223,13 +255,33 @@ def _create_result_zip(output_dir: Path, result_zip: Path) -> None:
                 zf.write(path, path.relative_to(output_dir))
 
 
-def _summarize_workbook(path: Path, output_dir: Path) -> ExcelSummary:
+def _remove_default_empty_sheet(path: Path) -> None:
+    workbook = load_workbook(path)
+    try:
+        if "Sheet" in workbook.sheetnames and len(workbook.sheetnames) > 1:
+            sheet = workbook["Sheet"]
+            if _is_empty_sheet(sheet):
+                workbook.remove(sheet)
+                workbook.save(path)
+    finally:
+        workbook.close()
+
+
+def _is_empty_sheet(sheet) -> bool:
+    for row in sheet.iter_rows(values_only=True):
+        for value in row:
+            if value not in (None, ""):
+                return False
+    return True
+
+
+def _summarize_workbook(path: Path, output_dir: Path, preview_rows: int) -> ExcelSummary:
     sheets: list[SheetSummary] = []
     workbook = load_workbook(path, read_only=True, data_only=True)
     try:
         for sheet in workbook.worksheets:
             preview: list[list[str]] = []
-            for row in sheet.iter_rows(max_row=6, values_only=True):
+            for row in sheet.iter_rows(max_row=max(2, min(preview_rows, 200)), values_only=True):
                 preview.append([_cell_to_text(value) for value in row])
             sheets.append(
                 SheetSummary(