feat(file-summary): 生成汇总报告和导出下载

review_agent/file_summary/services/report.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from review_agent.models import ExportedSummaryFile, FileSummaryBatch
+
+
+def _exports_dir(batch: FileSummaryBatch) -> Path:
+    root = Path(batch.work_dir or Path("media") / "file_summary" / batch.batch_no)
+    export_dir = root / "exports"
+    export_dir.mkdir(parents=True, exist_ok=True)
+    return export_dir
+
+
+def build_summary_table(batch: FileSummaryBatch) -> str:
+    lines = [
+        "| 序号 | 目录层级 | 文件名 | 类型 | 页数 | 状态 | 异常说明 |",
+        "| --- | --- | --- | --- | --- | --- | --- |",
+    ]
+    for item in batch.items.order_by("file_index"):
+        lines.append(
+            "| {index} | {directory} | {name} | {file_type} | {pages} | {status} | {error} |".format(
+                index=item.file_index,
+                directory=item.directory_level or "-",
+                name=item.file_name,
+                file_type=item.file_type,
+                pages=item.page_count if item.page_count is not None else "-",
+                status=item.statistics_status,
+                error=item.error_message or "-",
+            )
+        )
+    return "\n".join(lines)
+
+
+def build_markdown_report(batch: FileSummaryBatch) -> str:
+    return "\n\n".join(
+        [
+            f"# 文件目录与页数汇总报告\n\n批次号：{batch.batch_no}",
+            (
+                "## 汇总信息\n\n"
+                f"- 产品名称：{batch.product_name or '-'}\n"
+                f"- 文件总数：{batch.total_files}\n"
+                f"- 统计成功：{batch.success_files}\n"
+                f"- 统计失败：{batch.failed_files}\n"
+                f"- 不支持：{batch.unsupported_files}\n"
+                f"- 不确定：{batch.uncertain_files}\n"
+                f"- 总页数：{batch.total_pages}"
+            ),
+            "## 文件明细\n\n" + build_summary_table(batch),
+            "## 处理说明\n\n单文件失败不会阻断批次，失败与不确定文件已在明细中标注。",
+        ]
+    )
+
+
+def generate_markdown_report(batch: FileSummaryBatch) -> tuple[ExportedSummaryFile, str]:
+    content = build_markdown_report(batch)
+    path = _exports_dir(batch) / f"{batch.batch_no}-summary.md"
+    path.write_text(content, encoding="utf-8")
+    exported = ExportedSummaryFile.objects.create(
+        batch=batch,
+        export_type=ExportedSummaryFile.ExportType.MARKDOWN,
+        file_name=path.name,
+        storage_path=str(path),
+    )
+    return exported, build_summary_table(batch)