Set up feeder manifests (not merged by source yet)

src/auto_archiver/modules/csv_db/__manifest__.py

@@ -0,0 +1,22 @@
+{
+    "name": "csv_db",
+    "type": ["database"],
+    "requires_setup": False,
+    "external_dependencies": {"python": ["loguru"]
+                              },
+    "configs": {
+            "csv_file": {"default": "db.csv", "help": "CSV file name"}
+        },
+    "description": """
+Handles exporting archival results to a CSV file.
+
+### Features
+- Saves archival metadata as rows in a CSV file.
+- Automatically creates the CSV file with a header if it does not exist.
+- Appends new metadata entries to the existing file.
+
+### Setup
+Required config:
+- csv_file: Path to the CSV file where results will be stored (default: "db.csv").
+""",
+}

src/auto_archiver/modules/csv_db/csv_db.py

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+import os
+from loguru import logger
+from csv import DictWriter
+from dataclasses import asdict
+
+from auto_archiver.databases import Database
+from auto_archiver.core import Metadata
+
+
+class CSVDb(Database):
+    """
+        Outputs results to a CSV file
+    """
+    name = "csv_db"
+
+    def __init__(self, config: dict) -> None:
+        # without this STEP.__init__ is not called
+        super().__init__(config)
+        self.assert_valid_string("csv_file")
+
+
+    def done(self, item: Metadata, cached: bool=False) -> None:
+        """archival result ready - should be saved to DB"""
+        logger.success(f"DONE {item}")
+        is_empty = not os.path.isfile(self.csv_file) or os.path.getsize(self.csv_file) == 0
+        with open(self.csv_file, "a", encoding="utf-8") as outf:
+            writer = DictWriter(outf, fieldnames=asdict(Metadata()))
+            if is_empty: writer.writeheader()
+            writer.writerow(asdict(item))