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make better channel names as they result in being filenames #5

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make better channel names as they result in being filenames #5

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11 changes: 9 additions & 2 deletions boundier/storage/sqlite_store.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import os
import re
import sqlite3
import logging
from datetime import datetime
Expand All @@ -18,6 +19,12 @@ def _get_conn(self):
conn.row_factory = sqlite3.Row
return conn

@staticmethod
def _safe_name(name: str) -> str:
"""Sanitize a channel name for safe use as a filename (prevents path traversal)."""
cleaned = re.sub(r"[^a-zA-Z0-9_-]+", "-", name).strip("-")
return cleaned[:64] or "channel"

def _init_db(self):
"""Initializes database schema if missing and creates memory backup folders."""
logger.info(f"Initializing SQLite database at: {self.db_path}")
Expand Down Expand Up @@ -84,7 +91,7 @@ def sync_markdown_files(self):
for row in cursor.fetchall():
ch_name = row["channel_name"]
ch_summary = row["channel_summary"] or ""
file_path = os.path.join(self.memory_dir, f"{ch_name}.md")
file_path = os.path.join(self.memory_dir, f"{self._safe_name(ch_name)}.md")

# Check if file needs to be updated
write_file = True
Expand Down Expand Up @@ -121,7 +128,7 @@ def save_channel(self, channel_id: int, channel_name: str, category_id: Optional
(channel_id, channel_name, category_id, category_name, summary)
)
# Sync directly to local markdown file
file_path = os.path.join(self.memory_dir, f"{channel_name}.md")
file_path = os.path.join(self.memory_dir, f"{self._safe_name(channel_name)}.md")
with open(file_path, "w", encoding="utf-8") as f:
f.write(summary)
finally:
Expand Down