feat(regulatory): 增加法规核查基础服务

review_agent/regulatory_review/storage.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import hashlib
+from pathlib import Path
+
+from django.conf import settings
+
+from review_agent.models import RegulatoryArtifact, RegulatoryReviewBatch
+
+
+def save_artifact(
+    batch: RegulatoryReviewBatch,
+    *,
+    name: str,
+    content: str | bytes,
+    artifact_type: str,
+    metadata: dict | None = None,
+) -> RegulatoryArtifact:
+    root = Path(batch.work_dir) if batch.work_dir else Path(settings.MEDIA_ROOT) / "regulatory_review" / "work" / batch.batch_no
+    root.mkdir(parents=True, exist_ok=True)
+    path = root / Path(name).name
+    if isinstance(content, bytes):
+        path.write_bytes(content)
+        digest = hashlib.sha256(content).hexdigest()
+    else:
+        path.write_text(content, encoding="utf-8")
+        digest = hashlib.sha256(content.encode("utf-8")).hexdigest()
+    return RegulatoryArtifact.objects.create(
+        batch=batch,
+        artifact_type=artifact_type,
+        name=path.name,
+        storage_path=str(path),
+        content_hash=digest,
+        metadata=metadata or {},
+    )