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16d8a763cd07d50b5254cb147f082e40fff77b70
Medios-Macina/API/folder.py
nose 16d8a763cd dfdsf
2025-12-11 19:04:02 -08:00

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"""Unified local library management system combining database, initialization, migration, and search.
This module provides:
- SQLite database management for local file metadata caching
- Library scanning and database initialization
- Sidecar file migration from old .tags/.metadata files to database
- Optimized search functionality using database indices
- Worker task tracking for background operations
"""
from __future__ import annotations
import sqlite3
import json
import logging
import subprocess
import shutil
from datetime import datetime
from pathlib import Path
from typing import Optional, Dict, Any, List, Tuple, Set
from SYS.utils import sha256_file
logger = logging.getLogger(__name__)
WORKER_LOG_MAX_ENTRIES = 99
# Try to import optional dependencies
try:
import mutagen
except ImportError:
mutagen = None
try:
from metadata import (
_read_sidecar_metadata,
_derive_sidecar_path,
write_tags,
write_tags_to_file,
embed_metadata_in_file,
read_tags_from_file,
)
METADATA_AVAILABLE = True
except ImportError:
_read_sidecar_metadata = None
_derive_sidecar_path = None
write_tags = None
write_tags_to_file = None
embed_metadata_in_file = None
read_tags_from_file = None
METADATA_AVAILABLE = False
# Media extensions to index
MEDIA_EXTENSIONS = {
'.mp4', '.mkv', '.mka', '.webm', '.avi', '.mov', '.flv', '.wmv', '.m4v',
'.mp3', '.flac', '.wav', '.aac', '.ogg', '.m4a', '.wma',
'.jpg', '.jpeg', '.png', '.gif', '.webp', '.bmp', '.tiff',
'.pdf', '.epub', '.txt', '.docx', '.doc'
}
# ============================================================================
# SIDECAR FILE HANDLING
# ============================================================================
def read_sidecar(sidecar_path: Path) -> Tuple[Optional[str], List[str], List[str]]:
"""Read metadata from a sidecar file.
Delegates to metadata._read_sidecar_metadata for centralized handling.
Args:
sidecar_path: Path to .tags sidecar file
Returns:
Tuple of (hash_value, tags_list, url_list)
Returns (None, [], []) if file doesn't exist or can't be read
"""
if _read_sidecar_metadata is None:
return None, [], []
try:
return _read_sidecar_metadata(sidecar_path)
except Exception:
return None, [], []
def write_sidecar(media_path: Path, tags: List[str], url: List[str],
hash_value: Optional[str] = None) -> bool:
"""Write metadata to a sidecar file.
Delegates to metadata.write_tags for centralized handling.
Args:
media_path: Path to the media file (sidecar created as media_path.tags)
tags: List of tag strings
url: List of known URL strings
hash_value: Optional SHA256 hash to include
Returns:
True if successful, False otherwise
"""
if write_tags is None:
return False
if media_path.exists() and media_path.is_dir():
return False
try:
write_tags(media_path, tags, url, hash_value)
return True
except Exception:
return False
def find_sidecar(media_path: Path) -> Optional[Path]:
"""Find the sidecar file for a media path.
Uses metadata._derive_sidecar_path for centralized handling.
Args:
media_path: Path to media file
Returns:
Path to existing sidecar file, or None if not found
"""
if media_path.is_dir():
return None
if _derive_sidecar_path is None:
return None
try:
# Check for new format: filename.ext.tags
sidecar_path = _derive_sidecar_path(media_path)
if sidecar_path.exists():
return sidecar_path
except OSError:
pass
return None
def has_sidecar(media_path: Path) -> bool:
"""Check if a media file has a sidecar."""
return find_sidecar(media_path) is not None
class API_folder_store:
"""SQLite database for caching local library metadata."""
DB_NAME = "medios-macina.db"
SCHEMA_VERSION = 4
def __init__(self, library_root: Path):
"""Initialize the database at the library root.
Args:
library_root: Path to the local library root directory
"""
self.library_root = Path(library_root)
self.db_path = self.library_root / self.DB_NAME
self.connection: Optional[sqlite3.Connection] = None
self._init_db()
def _init_db(self) -> None:
"""Initialize database connection and create tables if needed."""
try:
# Use check_same_thread=False to allow multi-threaded access
# This is safe because we're not sharing connections across threads;
# each thread will get its own cursor
# Set a generous timeout to avoid "database is locked" errors during heavy concurrency
self.connection = sqlite3.connect(str(self.db_path), check_same_thread=False, timeout=60.0)
self.connection.row_factory = sqlite3.Row
# Enable Write-Ahead Logging (WAL) for better concurrency
self.connection.execute("PRAGMA journal_mode=WAL")
# Enable foreign keys
self.connection.execute("PRAGMA foreign_keys = ON")
self._create_tables()
logger.info(f"Database initialized at {self.db_path}")
except Exception as e:
logger.error(f"Failed to initialize database: {e}", exc_info=True)
if self.connection:
try:
self.connection.close()
except Exception:
pass
self.connection = None
raise
def _create_tables(self) -> None:
"""Create database tables if they don't exist."""
cursor = self.connection.cursor()
cursor.execute("""
CREATE TABLE IF NOT EXISTS files (
hash TEXT PRIMARY KEY NOT NULL,
file_path TEXT UNIQUE NOT NULL,
file_modified REAL,
indexed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cursor.execute("""
CREATE TABLE IF NOT EXISTS metadata (
hash TEXT PRIMARY KEY NOT NULL,
url TEXT,
relationships TEXT,
duration REAL,
size INTEGER,
ext TEXT,
type TEXT,
time_imported TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
time_modified TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (hash) REFERENCES files(hash) ON DELETE CASCADE
)
""")
cursor.execute("""
CREATE TABLE IF NOT EXISTS tags (
id INTEGER PRIMARY KEY AUTOINCREMENT,
hash TEXT NOT NULL,
tag TEXT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (hash) REFERENCES files(hash) ON DELETE CASCADE,
UNIQUE(hash, tag)
)
""")
cursor.execute("""
CREATE TABLE IF NOT EXISTS notes (
hash TEXT PRIMARY KEY NOT NULL,
note TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (hash) REFERENCES files(hash) ON DELETE CASCADE
)
""")
cursor.execute("""
CREATE TABLE IF NOT EXISTS playlists (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT UNIQUE NOT NULL,
items TEXT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
# Worker tracking tables (drop legacy workers table if still present)
self._ensure_worker_tables(cursor)
# Create indices for performance
cursor.execute("CREATE INDEX IF NOT EXISTS idx_files_path ON files(file_path)")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_tags_hash ON tags(hash)")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_tags_tag ON tags(tag)")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_worker_id ON worker(worker_id)")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_worker_status ON worker(status)")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_worker_type ON worker(worker_type)")
self._migrate_metadata_schema(cursor)
self.connection.commit()
logger.debug("Database tables created/verified")
def _ensure_worker_tables(self, cursor) -> None:
"""Ensure the modern worker tables exist, dropping legacy ones if needed."""
cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='worker'")
has_worker = cursor.fetchone() is not None
if not has_worker:
cursor.execute("DROP TABLE IF EXISTS workers")
cursor.execute("""
CREATE TABLE worker (
id INTEGER PRIMARY KEY AUTOINCREMENT,
worker_id TEXT UNIQUE NOT NULL,
worker_type TEXT NOT NULL,
pipe TEXT,
status TEXT DEFAULT 'running',
title TEXT,
description TEXT,
progress REAL DEFAULT 0.0,
current_step TEXT,
total_steps INTEGER DEFAULT 0,
error_message TEXT,
result_data TEXT,
stdout TEXT DEFAULT '',
steps TEXT DEFAULT '',
started_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
completed_at TIMESTAMP,
last_stdout_at TIMESTAMP,
last_updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
else:
self._ensure_worker_columns(cursor)
cursor.execute("""
CREATE TABLE IF NOT EXISTS worker_log (
id INTEGER PRIMARY KEY AUTOINCREMENT,
worker_id TEXT NOT NULL,
event_type TEXT NOT NULL,
step TEXT,
channel TEXT,
message TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY(worker_id) REFERENCES worker(worker_id) ON DELETE CASCADE
)
""")
cursor.execute("CREATE INDEX IF NOT EXISTS idx_worker_log_worker_id ON worker_log(worker_id)")
def _ensure_worker_columns(self, cursor) -> None:
"""Backfill columns for older worker tables during upgrade."""
try:
cursor.execute('PRAGMA table_info(worker)')
existing_columns = {row[1] for row in cursor.fetchall()}
except Exception as exc:
logger.error(f"Error introspecting worker table: {exc}")
return
column_specs = {
'pipe': "TEXT",
'progress': "REAL DEFAULT 0.0",
'current_step': "TEXT",
'total_steps': "INTEGER DEFAULT 0",
'stdout': "TEXT DEFAULT ''",
'steps': "TEXT DEFAULT ''",
'last_stdout_at': "TIMESTAMP"
}
for col_name, ddl in column_specs.items():
if col_name not in existing_columns:
try:
cursor.execute(f"ALTER TABLE worker ADD COLUMN {col_name} {ddl}")
logger.info(f"Added '{col_name}' column to worker table")
except Exception as exc:
logger.warning(f"Could not add '{col_name}' column to worker table: {exc}")
def _insert_worker_log_entry(self, cursor, worker_id: str, event_type: str,
message: str, step: Optional[str] = None,
channel: Optional[str] = None) -> None:
if not message:
return
cursor.execute("""
INSERT INTO worker_log (worker_id, event_type, step, channel, message)
VALUES (?, ?, ?, ?, ?)
""", (worker_id, event_type, step, channel, message))
self._prune_worker_log_entries(cursor, worker_id)
def _prune_worker_log_entries(self, cursor, worker_id: str) -> None:
"""Keep at most WORKER_LOG_MAX_ENTRIES rows per worker by trimming oldest ones."""
if WORKER_LOG_MAX_ENTRIES <= 0:
return
cursor.execute(
"""
SELECT id FROM worker_log
WHERE worker_id = ?
ORDER BY id DESC
LIMIT 1 OFFSET ?
""",
(worker_id, WORKER_LOG_MAX_ENTRIES - 1),
)
row = cursor.fetchone()
if not row:
return
cutoff_id = row[0]
cursor.execute(
"DELETE FROM worker_log WHERE worker_id = ? AND id < ?",
(worker_id, cutoff_id),
)
def get_worker_events(self, worker_id: str, limit: int = 500) -> List[Dict[str, Any]]:
"""Return chronological worker log events for timelines."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT id, event_type, step, channel, message, created_at
FROM worker_log
WHERE worker_id = ?
ORDER BY id ASC
LIMIT ?
""", (worker_id, limit))
return [dict(row) for row in cursor.fetchall()]
except Exception as exc:
logger.error(f"Error retrieving worker events for {worker_id}: {exc}", exc_info=True)
return []
def clear_worker_events(self, worker_id: str, event_type: Optional[str] = None) -> None:
"""Remove worker log entries, optionally filtered by event type."""
try:
cursor = self.connection.cursor()
if event_type:
cursor.execute(
"DELETE FROM worker_log WHERE worker_id = ? AND event_type = ?",
(worker_id, event_type)
)
else:
cursor.execute("DELETE FROM worker_log WHERE worker_id = ?", (worker_id,))
self.connection.commit()
except Exception as exc:
logger.error(f"Error clearing worker log for {worker_id}: {exc}", exc_info=True)
def _migrate_metadata_schema(self, cursor) -> None:
"""Import legacy metadata from old schema if present. Existing hash-based schema is ready to use."""
try:
# Check if this is a fresh new database (hash-based schema)
cursor.execute('PRAGMA table_info(metadata)')
existing_columns = {row[1] for row in cursor.fetchall()}
# If hash column exists, we're already on the new schema
if 'hash' in existing_columns:
logger.info("Database is already using hash-based schema - no migration needed")
return
# Legacy migration: If old schema exists, try to import data
# Old schema would have had: id (INTEGER PRIMARY KEY), file_hash (TEXT), etc.
if 'id' in existing_columns and 'file_hash' in existing_columns:
logger.info("Detected legacy metadata schema - importing to new hash-based schema")
# This would be complex legacy migration - for now just note it
logger.info("Legacy metadata table detected but import not yet implemented")
return
# Add any missing columns to the new schema
for col_name, col_def in [('size', 'INTEGER'), ('ext', 'TEXT'),
('type', 'TEXT'),
('time_imported', 'TIMESTAMP DEFAULT CURRENT_TIMESTAMP'),
('time_modified', 'TIMESTAMP DEFAULT CURRENT_TIMESTAMP')]:
if col_name not in existing_columns:
try:
cursor.execute(f"ALTER TABLE metadata ADD COLUMN {col_name} {col_def}")
logger.info(f"Added '{col_name}' column to metadata table")
except Exception as e:
logger.debug(f"Column '{col_name}' may already exist: {e}")
# Populate type column from ext if not already populated
if 'type' in existing_columns and 'ext' in existing_columns:
try:
from SYS.utils_constant import get_type_from_ext
cursor.execute("SELECT hash, ext FROM metadata WHERE type IS NULL OR type = ''")
rows = cursor.fetchall()
for file_hash, ext in rows:
file_type = get_type_from_ext(ext or '')
cursor.execute("UPDATE metadata SET type = ? WHERE hash = ?", (file_type, file_hash))
if rows:
logger.info(f"Populated type column for {len(rows)} metadata entries")
except Exception as e:
logger.debug(f"Could not populate type column: {e}")
self.connection.commit()
except Exception as e:
logger.debug(f"Note: Schema import/migration completed with status: {e}")
def _update_metadata_modified_time(self, file_hash: str) -> None:
"""Update the time_modified timestamp for a file's metadata."""
try:
cursor = self.connection.cursor()
cursor.execute("""
UPDATE metadata SET time_modified = CURRENT_TIMESTAMP WHERE hash = ?
""", (file_hash,))
self.connection.commit()
except Exception as e:
logger.debug(f"Could not update metadata modified time for hash {file_hash}: {e}")
def get_or_create_file_entry(self, file_path: Path, file_hash: Optional[str] = None) -> str:
"""Get or create a file entry in the database and return the hash.
Args:
file_path: Path to the file
file_hash: Optional hash (will be computed if not provided)
Returns:
The file hash (primary key)
"""
try:
str_path = str(file_path.resolve())
logger.debug(f"[get_or_create_file_entry] Looking up: {str_path}")
# If hash not provided, compute it
if not file_hash:
file_hash = sha256_file(file_path)
logger.debug(f"[get_or_create_file_entry] Computed hash: {file_hash}")
cursor = self.connection.cursor()
# Check if file entry exists
cursor.execute("SELECT hash FROM files WHERE hash = ?", (file_hash,))
row = cursor.fetchone()
if row:
logger.debug(f"[get_or_create_file_entry] Found existing file hash: {file_hash}")
return file_hash
logger.debug(f"[get_or_create_file_entry] File entry not found, creating new one")
stat = file_path.stat()
cursor.execute("""
INSERT INTO files (hash, file_path, file_modified)
VALUES (?, ?, ?)
""", (file_hash, str_path, stat.st_mtime))
logger.debug(f"[get_or_create_file_entry] Created new file entry for hash: {file_hash}")
# Auto-create title tag
filename_without_ext = file_path.stem
if filename_without_ext:
# Normalize underscores to spaces for consistency
title_value = filename_without_ext.replace("_", " ").strip()
title_tag = f"title:{title_value}"
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, title_tag))
logger.debug(f"[get_or_create_file_entry] Auto-created title tag for hash {file_hash}")
self.connection.commit()
logger.debug(f"[get_or_create_file_entry] Committed file entry {file_hash}")
return file_hash
except Exception as e:
logger.error(f"[get_or_create_file_entry] ❌ Error getting/creating file entry for {file_path}: {e}", exc_info=True)
raise
def get_file_hash(self, file_path: Path) -> Optional[str]:
"""Get the file hash for a file path, or None if not found."""
try:
str_path = str(file_path.resolve())
cursor = self.connection.cursor()
cursor.execute("SELECT hash FROM files WHERE file_path = ?", (str_path,))
row = cursor.fetchone()
return row[0] if row else None
except Exception as e:
logger.error(f"Error getting file hash for {file_path}: {e}", exc_info=True)
return None
def get_metadata(self, file_hash: str) -> Optional[Dict[str, Any]]:
"""Get metadata for a file by hash."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT m.* FROM metadata m
WHERE m.hash = ?
""", (file_hash,))
row = cursor.fetchone()
if not row:
return None
metadata = dict(row)
# Parse JSON fields
for field in ['url', 'relationships']:
if metadata.get(field):
try:
metadata[field] = json.loads(metadata[field])
except (json.JSONDecodeError, TypeError):
metadata[field] = [] if field == 'url' else []
return metadata
except Exception as e:
logger.error(f"Error getting metadata for hash {file_hash}: {e}", exc_info=True)
return None
def save_metadata(self, file_path: Path, metadata: Dict[str, Any]) -> None:
"""Save metadata for a file."""
try:
str_path = str(file_path.resolve())
logger.debug(f"[save_metadata] Starting save for: {str_path}")
file_hash = self.get_or_create_file_entry(file_path, metadata.get('hash'))
logger.debug(f"[save_metadata] Got/created file_hash: {file_hash}")
cursor = self.connection.cursor()
url = metadata.get('url', [])
if not isinstance(url, str):
url = json.dumps(url)
relationships = metadata.get('relationships', [])
if not isinstance(relationships, str):
relationships = json.dumps(relationships)
# Determine type from ext if not provided
file_type = metadata.get('type')
ext = metadata.get('ext')
if not file_type and ext:
from SYS.utils_constant import get_type_from_ext
file_type = get_type_from_ext(str(ext))
cursor.execute("""
INSERT INTO metadata (
hash, url, relationships,
duration, size, ext, type,
time_imported, time_modified
)
VALUES (?, ?, ?, ?, ?, ?, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
ON CONFLICT(hash) DO UPDATE SET
url = excluded.url,
relationships = excluded.relationships,
duration = excluded.duration,
size = excluded.size,
ext = excluded.ext,
type = excluded.type,
time_modified = CURRENT_TIMESTAMP,
updated_at = CURRENT_TIMESTAMP
""", (
file_hash, url, relationships,
metadata.get('duration'), metadata.get('size'), ext,
file_type
))
self.connection.commit()
logger.debug(f"[save_metadata] Committed metadata for hash {file_hash}")
except Exception as e:
logger.error(f"[save_metadata] ❌ Error saving metadata for {file_path}: {e}", exc_info=True)
raise
def save_file_info(self, file_path: Path, metadata: Dict[str, Any], tags: List[str]) -> None:
"""Save metadata and tags for a file in a single transaction."""
try:
str_path = str(file_path.resolve())
logger.debug(f"[save_file_info] Starting save for: {str_path}")
file_hash = self.get_or_create_file_entry(file_path, metadata.get('hash'))
cursor = self.connection.cursor()
# 1. Save Metadata
url = metadata.get('url', [])
if not isinstance(url, str):
url = json.dumps(url)
relationships = metadata.get('relationships', [])
if not isinstance(relationships, str):
relationships = json.dumps(relationships)
# Determine type from ext if not provided
file_type = metadata.get('type')
ext = metadata.get('ext')
if not file_type and ext:
from SYS.utils_constant import get_type_from_ext
file_type = get_type_from_ext(str(ext))
cursor.execute("""
INSERT INTO metadata (
hash, url, relationships,
duration, size, ext, type,
time_imported, time_modified
)
VALUES (?, ?, ?, ?, ?, ?, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
ON CONFLICT(hash) DO UPDATE SET
url = excluded.url,
relationships = excluded.relationships,
duration = excluded.duration,
size = excluded.size,
ext = excluded.ext,
type = excluded.type,
time_modified = CURRENT_TIMESTAMP,
updated_at = CURRENT_TIMESTAMP
""", (
file_hash, url, relationships,
metadata.get('duration'), metadata.get('size'), ext,
file_type
))
# 2. Save Tags
# We assume tags list is complete and includes title if needed
cursor.execute("DELETE FROM tags WHERE hash = ?", (file_hash,))
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, tag))
self.connection.commit()
logger.debug(f"[save_file_info] Committed metadata and tags for hash {file_hash}")
except Exception as e:
logger.error(f"[save_file_info] ❌ Error saving file info for {file_path}: {e}", exc_info=True)
raise
def get_tags(self, file_hash: str) -> List[str]:
"""Get all tags for a file by hash."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT t.tag FROM tags t
WHERE t.hash = ?
ORDER BY t.tag
""", (file_hash,))
return [row[0] for row in cursor.fetchall()]
except Exception as e:
logger.error(f"Error getting tags for hash {file_hash}: {e}", exc_info=True)
return []
def save_tags(self, file_path: Path, tags: List[str]) -> None:
"""Save tags for a file, replacing all existing tags."""
try:
str_path = str(file_path.resolve())
logger.debug(f"[save_tags] Starting save for: {str_path}")
file_hash = self.get_or_create_file_entry(file_path)
logger.debug(f"[save_tags] Got/created file_hash: {file_hash}")
cursor = self.connection.cursor()
cursor.execute("""
SELECT tag FROM tags WHERE hash = ? AND tag LIKE 'title:%'
""", (file_hash,))
existing_title = cursor.fetchone()
cursor.execute("DELETE FROM tags WHERE hash = ?", (file_hash,))
logger.debug(f"[save_tags] Deleted existing tags for hash {file_hash}")
# Check if new tags provide a title
new_title_provided = any(str(t).strip().lower().startswith("title:") for t in tags)
if existing_title and not new_title_provided:
cursor.execute("""
INSERT INTO tags (hash, tag) VALUES (?, ?)
""", (file_hash, existing_title[0]))
logger.debug(f"[save_tags] Preserved existing title tag")
elif not existing_title and not new_title_provided:
filename_without_ext = file_path.stem
if filename_without_ext:
# Normalize underscores to spaces for consistency
title_value = filename_without_ext.replace("_", " ").strip()
title_tag = f"title:{title_value}"
cursor.execute("""
INSERT INTO tags (hash, tag) VALUES (?, ?)
""", (file_hash, title_tag))
logger.debug(f"[save_tags] Created auto-title tag: {title_tag}")
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, tag))
self.connection.commit()
logger.debug(f"[save_tags] Committed {len(tags)} tags for hash {file_hash}")
# Verify they were actually saved
cursor.execute("SELECT COUNT(*) FROM tags WHERE hash = ?", (file_hash,))
saved_count = cursor.fetchone()[0]
logger.debug(f"[save_tags] Verified: {saved_count} tags in database for hash {file_hash}")
self._update_metadata_modified_time(file_hash)
except Exception as e:
logger.error(f"[save_tags] ❌ Error saving tags for {file_path}: {e}", exc_info=True)
raise
def add_tags(self, file_path: Path, tags: List[str]) -> None:
"""Add tags to a file."""
try:
file_hash = self.get_or_create_file_entry(file_path)
cursor = self.connection.cursor()
user_title_tag = next((tag.strip() for tag in tags
if tag.strip().lower().startswith('title:')), None)
if user_title_tag:
cursor.execute("""
DELETE FROM tags WHERE hash = ? AND tag LIKE 'title:%'
""", (file_hash,))
else:
cursor.execute("""
SELECT COUNT(*) FROM tags WHERE hash = ? AND tag LIKE 'title:%'
""", (file_hash,))
has_title = cursor.fetchone()[0] > 0
if not has_title:
filename_without_ext = file_path.stem
if filename_without_ext:
# Normalize underscores to spaces for consistency
title_value = filename_without_ext.replace("_", " ").strip()
title_tag = f"title:{title_value}"
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, title_tag))
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, tag))
self.connection.commit()
self._update_metadata_modified_time(file_hash)
logger.debug(f"Added {len(tags)} tags for {file_path}")
except Exception as e:
logger.error(f"Error adding tags for {file_path}: {e}", exc_info=True)
raise
def remove_tags(self, file_path: Path, tags: List[str]) -> None:
"""Remove specific tags from a file."""
try:
file_hash = self.get_or_create_file_entry(file_path)
cursor = self.connection.cursor()
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
DELETE FROM tags
WHERE hash = ?
AND tag = ?
""", (file_hash, tag))
self.connection.commit()
logger.debug(f"Removed {len(tags)} tags for {file_path}")
except Exception as e:
logger.error(f"Error removing tags for {file_path}: {e}", exc_info=True)
raise
def add_tags_to_hash(self, file_hash: str, tags: List[str]) -> None:
"""Add tags to a file by hash."""
try:
cursor = self.connection.cursor()
user_title_tag = next((tag.strip() for tag in tags
if tag.strip().lower().startswith('title:')), None)
if user_title_tag:
cursor.execute("""
DELETE FROM tags WHERE hash = ? AND tag LIKE 'title:%'
""", (file_hash,))
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
INSERT OR IGNORE INTO tags (hash, tag)
VALUES (?, ?)
""", (file_hash, tag))
self.connection.commit()
self._update_metadata_modified_time(file_hash)
logger.debug(f"Added {len(tags)} tags for hash {file_hash}")
except Exception as e:
logger.error(f"Error adding tags for hash {file_hash}: {e}", exc_info=True)
raise
def remove_tags_from_hash(self, file_hash: str, tags: List[str]) -> None:
"""Remove specific tags from a file by hash."""
try:
cursor = self.connection.cursor()
for tag in tags:
tag = tag.strip()
if tag:
cursor.execute("""
DELETE FROM tags
WHERE hash = ?
AND tag = ?
""", (file_hash, tag))
self.connection.commit()
logger.debug(f"Removed {len(tags)} tags for hash {file_hash}")
except Exception as e:
logger.error(f"Error removing tags for hash {file_hash}: {e}", exc_info=True)
raise
def update_metadata_by_hash(self, file_hash: str, metadata_updates: Dict[str, Any]) -> None:
"""Update metadata for a file by hash."""
try:
cursor = self.connection.cursor()
fields = []
values = []
for key, value in metadata_updates.items():
if key in ['url', 'relationships']:
if not isinstance(value, str):
value = json.dumps(value)
fields.append(f"{key} = ?")
values.append(value)
if not fields:
return
values.append(file_hash)
sql = f"UPDATE metadata SET {', '.join(fields)}, time_modified = CURRENT_TIMESTAMP, updated_at = CURRENT_TIMESTAMP WHERE hash = ?"
cursor.execute(sql, values)
self.connection.commit()
logger.debug(f"Updated metadata for hash {file_hash}")
except Exception as e:
logger.error(f"Error updating metadata for hash {file_hash}: {e}", exc_info=True)
raise
def set_relationship(self, file_path: Path, related_file_path: Path, rel_type: str = "alt") -> None:
"""Set a relationship between two local files.
Args:
file_path: Path to the file being related
related_file_path: Path to the related file
rel_type: Type of relationship ('king', 'alt', 'related')
"""
try:
str_path = str(file_path.resolve())
str_related_path = str(related_file_path.resolve())
file_hash = self.get_or_create_file_entry(file_path)
related_file_hash = self.get_or_create_file_entry(related_file_path)
cursor = self.connection.cursor()
# Get current relationships for the main file
cursor.execute("""
SELECT relationships FROM metadata WHERE hash = ?
""", (file_hash,))
row = cursor.fetchone()
# Use index access to be safe regardless of row_factory
relationships_str = row[0] if row else None
try:
if relationships_str:
relationships = json.loads(relationships_str)
else:
relationships = {}
except (json.JSONDecodeError, TypeError):
relationships = {}
# Ensure relationships is a dict (handle case where DB has a list)
if not isinstance(relationships, dict):
relationships = {}
# Ensure rel_type key exists
if rel_type not in relationships:
relationships[rel_type] = []
# Add the relationship (store as hash string)
if related_file_hash not in relationships[rel_type]:
relationships[rel_type].append(related_file_hash)
# Save the updated relationships for the main file
cursor.execute("""
INSERT INTO metadata (hash, relationships)
VALUES (?, ?)
ON CONFLICT(hash) DO UPDATE SET
relationships = excluded.relationships,
time_modified = CURRENT_TIMESTAMP
""", (file_hash, json.dumps(relationships)))
logger.debug(f"Set {rel_type} relationship: {str_path} ({file_hash}) -> {str_related_path} ({related_file_hash})")
# Set reverse relationship (bidirectional)
# For 'alt' and 'related', the reverse is the same
# For 'king', the reverse is 'subject' (or we just use 'alt' for simplicity as Hydrus does)
# Let's use the same type for now to keep it simple and consistent with Hydrus 'alternates'
reverse_type = rel_type
# Update the related file
cursor.execute("""
SELECT relationships FROM metadata WHERE hash = ?
""", (related_file_hash,))
row = cursor.fetchone()
relationships_str = row[0] if row else None
try:
if relationships_str:
reverse_relationships = json.loads(relationships_str)
else:
reverse_relationships = {}
except (json.JSONDecodeError, TypeError):
reverse_relationships = {}
if not isinstance(reverse_relationships, dict):
reverse_relationships = {}
if reverse_type not in reverse_relationships:
reverse_relationships[reverse_type] = []
if file_hash not in reverse_relationships[reverse_type]:
reverse_relationships[reverse_type].append(file_hash)
# Save the updated reverse relationships
cursor.execute("""
INSERT INTO metadata (hash, relationships)
VALUES (?, ?)
ON CONFLICT(hash) DO UPDATE SET
relationships = excluded.relationships,
time_modified = CURRENT_TIMESTAMP
""", (related_file_hash, json.dumps(reverse_relationships)))
self.connection.commit()
except Exception as e:
logger.error(f"Error setting relationship: {e}", exc_info=True)
raise
def find_files_pointing_to(self, target_path: Path) -> List[Dict[str, Any]]:
"""Find all files that have a relationship pointing to the target path.
Args:
target_path: The file path to look for in other files' relationships
Returns:
List of dicts with {path, type} for files pointing to target
"""
try:
# Get the hash of the target file
target_hash = sha256_file(target_path)
if not target_hash:
logger.warning(f"Cannot find files pointing to {target_path}: unable to compute hash")
return []
cursor = self.connection.cursor()
# Scan all metadata (this might be slow on huge DBs but fine for local library)
# We select file_path and relationships json
cursor.execute("""
SELECT f.file_path, m.relationships
FROM metadata m
JOIN files f ON m.hash = f.hash
WHERE m.relationships LIKE ?
""", (f"%{target_hash}%",))
results = []
for row in cursor.fetchall():
f_path = row[0]
rels_json = row[1]
try:
rels = json.loads(rels_json)
if isinstance(rels, dict):
for r_type, hashes in rels.items():
if isinstance(hashes, list):
# Check if target hash is in this relationship type
if target_hash in hashes:
results.append({
"path": f_path,
"type": r_type
})
except (json.JSONDecodeError, TypeError):
continue
return results
except Exception as e:
logger.error(f"Error finding files pointing to {target_path}: {e}", exc_info=True)
return []
def get_note(self, file_hash: str) -> Optional[str]:
"""Get note for a file by hash."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT n.note FROM notes n
WHERE n.hash = ?
""", (file_hash,))
row = cursor.fetchone()
return row[0] if row else None
except Exception as e:
logger.error(f"Error getting note for hash {file_hash}: {e}", exc_info=True)
return None
def save_note(self, file_path: Path, note: str) -> None:
"""Save note for a file."""
try:
file_hash = self.get_or_create_file_entry(file_path)
cursor = self.connection.cursor()
cursor.execute("""
INSERT INTO notes (hash, note)
VALUES (?, ?)
ON CONFLICT(hash) DO UPDATE SET
note = excluded.note,
updated_at = CURRENT_TIMESTAMP
""", (file_hash, note))
self.connection.commit()
logger.debug(f"Saved note for {file_path}")
except Exception as e:
logger.error(f"Error saving note for {file_path}: {e}", exc_info=True)
raise
def search_by_tag(self, tag: str, limit: int = 100) -> List[tuple]:
"""Search for files with a specific tag. Returns list of (hash, file_path) tuples."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT DISTINCT f.hash, f.file_path FROM files f
JOIN tags t ON f.hash = t.hash
WHERE t.tag = ?
LIMIT ?
""", (tag, limit))
return cursor.fetchall()
except Exception as e:
logger.error(f"Error searching by tag '{tag}': {e}", exc_info=True)
return []
def search_hash(self, file_hash: str) -> Optional[Path]:
"""Search for a file by hash."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT file_path FROM files WHERE hash = ?
""", (file_hash,))
row = cursor.fetchone()
return Path(row[0]) if row else None
except Exception as e:
logger.error(f"Error searching by hash '{file_hash}': {e}", exc_info=True)
return None
def update_file_hash(self, file_path: Path, file_hash: str) -> None:
"""Deprecated: Hash is managed as primary key. This method is no-op.
In the new hash-based schema, the file hash is the primary key (immutable).
Use get_or_create_file_entry() to ensure the hash is properly registered.
"""
# This is now a no-op since hash is the immutable primary key
pass
def rename_file(self, old_path: Path, new_path: Path) -> None:
"""Rename a file in the database, preserving all metadata."""
try:
str_old_path = str(old_path.resolve())
str_new_path = str(new_path.resolve())
cursor = self.connection.cursor()
cursor.execute("""
UPDATE files SET file_path = ?, updated_at = CURRENT_TIMESTAMP
WHERE file_path = ?
""", (str_new_path, str_old_path))
self.connection.commit()
logger.debug(f"Renamed file in database: {old_path} → {new_path}")
except Exception as e:
logger.error(f"Error renaming file from {old_path} to {new_path}: {e}", exc_info=True)
raise
def cleanup_missing_files(self) -> int:
"""Remove entries for files that no longer exist."""
try:
cursor = self.connection.cursor()
cursor.execute("SELECT hash, file_path FROM files")
removed_count = 0
for file_hash, file_path in cursor.fetchall():
if not Path(file_path).exists():
cursor.execute("DELETE FROM files WHERE hash = ?", (file_hash,))
removed_count += 1
self.connection.commit()
logger.info(f"Cleaned up {removed_count} missing file entries")
return removed_count
except Exception as e:
logger.error(f"Error cleaning up missing files: {e}", exc_info=True)
return 0
def delete_file(self, file_path: Path) -> bool:
"""Delete a file from the database by path. Cascades to metadata, tags, notes, etc."""
try:
str_path = str(file_path.resolve())
cursor = self.connection.cursor()
# Get the hash first (for logging)
cursor.execute("SELECT hash FROM files WHERE file_path = ?", (str_path,))
row = cursor.fetchone()
if not row:
logger.debug(f"File not found in database: {str_path}")
return False
file_hash = row[0]
# Delete the file entry (cascades to metadata, tags, notes, etc via foreign keys)
cursor.execute("DELETE FROM files WHERE file_path = ?", (str_path,))
self.connection.commit()
logger.debug(f"Deleted file from database: {str_path} (hash: {file_hash})")
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Error deleting file {file_path}: {e}", exc_info=True)
return False
# ========================================================================
# WORKER MANAGEMENT
# ========================================================================
def insert_worker(self, worker_id: str, worker_type: str, title: str = "",
description: str = "", total_steps: int = 0,
pipe: Optional[str] = None) -> int:
"""Insert a new worker entry into the database."""
try:
cursor = self.connection.cursor()
cursor.execute("""
INSERT INTO worker (worker_id, worker_type, pipe, status, title, description, total_steps)
VALUES (?, ?, ?, ?, ?, ?, ?)
""", (worker_id, worker_type, pipe, 'running', title, description, total_steps))
self.connection.commit()
return cursor.lastrowid or 0
except sqlite3.IntegrityError:
return self.update_worker_status(worker_id, 'running')
except Exception as e:
logger.error(f"Error inserting worker: {e}", exc_info=True)
return 0
def update_worker(self, worker_id: str, **kwargs) -> bool:
"""Update worker entry with given fields."""
try:
allowed_fields = {
'status', 'progress', 'current_step', 'error_message', 'result_data',
'title', 'description', 'completed_at', 'total_steps', 'pipe',
'started_at', 'last_stdout_at'
}
update_fields = {k: v for k, v in kwargs.items() if k in allowed_fields}
if not update_fields:
return True
update_fields['last_updated'] = datetime.now().isoformat()
cursor = self.connection.cursor()
set_clause = ", ".join(f"{k} = ?" for k in update_fields.keys())
values = list(update_fields.values()) + [worker_id]
cursor.execute(f"""
UPDATE worker SET {set_clause} WHERE worker_id = ?
""", values)
self.connection.commit()
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Error updating worker {worker_id}: {e}", exc_info=True)
return False
def update_worker_status(self, worker_id: str, status: str) -> int:
"""Update worker status and return its database ID."""
try:
cursor = self.connection.cursor()
if status in ('completed', 'error'):
cursor.execute("""
UPDATE worker
SET status = ?, completed_at = CURRENT_TIMESTAMP, last_updated = CURRENT_TIMESTAMP
WHERE worker_id = ?
""", (status, worker_id))
else:
cursor.execute("""
UPDATE worker
SET status = ?, last_updated = CURRENT_TIMESTAMP
WHERE worker_id = ?
""", (status, worker_id))
self.connection.commit()
cursor.execute("SELECT id FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
return row[0] if row else 0
except Exception as e:
logger.error(f"Error updating worker status: {e}", exc_info=True)
return 0
def get_worker(self, worker_id: str) -> Optional[Dict[str, Any]]:
"""Retrieve a worker entry by ID."""
try:
cursor = self.connection.cursor()
cursor.execute("SELECT * FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
return dict(row) if row else None
except Exception as e:
logger.error(f"Error retrieving worker: {e}", exc_info=True)
return None
def get_active_workers(self) -> List[Dict[str, Any]]:
"""Get all active (running) workers."""
try:
cursor = self.connection.cursor()
cursor.execute("SELECT * FROM worker WHERE status = 'running' ORDER BY started_at DESC")
return [dict(row) for row in cursor.fetchall()]
except Exception as e:
logger.error(f"Error retrieving active workers: {e}", exc_info=True)
return []
def get_all_workers(self, limit: int = 100) -> List[Dict[str, Any]]:
"""Get all workers (recent first)."""
try:
cursor = self.connection.cursor()
cursor.execute("""
SELECT * FROM worker ORDER BY started_at DESC LIMIT ?
""", (limit,))
return [dict(row) for row in cursor.fetchall()]
except Exception as e:
logger.error(f"Error retrieving all workers: {e}", exc_info=True)
return []
def delete_worker(self, worker_id: str) -> bool:
"""Delete a worker entry."""
try:
cursor = self.connection.cursor()
cursor.execute("DELETE FROM worker WHERE worker_id = ?", (worker_id,))
self.connection.commit()
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Error deleting worker: {e}", exc_info=True)
return False
def cleanup_old_workers(self, days: int = 7) -> int:
"""Clean up completed/errored workers older than specified days."""
try:
cursor = self.connection.cursor()
cursor.execute("""
DELETE FROM worker
WHERE status IN ('completed', 'error')
AND completed_at < datetime('now', '-' || ? || ' days')
""", (days,))
self.connection.commit()
return cursor.rowcount
except Exception as e:
logger.error(f"Error cleaning up old workers: {e}", exc_info=True)
return 0
def expire_running_workers(
self,
older_than_seconds: int = 300,
status: str = "error",
reason: str | None = None,
worker_id_prefix: str | None = None,
) -> int:
"""Mark long-idle running workers as finished with the given status.
Args:
older_than_seconds: Minimum idle time before expiring the worker.
status: New status to apply (e.g., "error" or "cancelled").
reason: Error message to set when none is present.
worker_id_prefix: Optional LIKE pattern (e.g., 'cli_%') to scope updates.
Returns:
Number of workers updated.
"""
idle_seconds = max(1, int(older_than_seconds))
cutoff = f"-{idle_seconds} seconds"
auto_reason = reason or "Worker stopped responding; auto-marked as error"
try:
cursor = self.connection.cursor()
if worker_id_prefix:
cursor.execute(
"""
UPDATE worker
SET status = ?,
error_message = CASE
WHEN IFNULL(TRIM(error_message), '') = '' THEN ?
ELSE error_message
END,
completed_at = COALESCE(completed_at, CURRENT_TIMESTAMP),
last_updated = CURRENT_TIMESTAMP
WHERE status = 'running'
AND worker_id LIKE ?
AND COALESCE(last_updated, started_at, created_at) < datetime('now', ?)
""",
(status, auto_reason, worker_id_prefix, cutoff),
)
else:
cursor.execute(
"""
UPDATE worker
SET status = ?,
error_message = CASE
WHEN IFNULL(TRIM(error_message), '') = '' THEN ?
ELSE error_message
END,
completed_at = COALESCE(completed_at, CURRENT_TIMESTAMP),
last_updated = CURRENT_TIMESTAMP
WHERE status = 'running'
AND COALESCE(last_updated, started_at, created_at) < datetime('now', ?)
""",
(status, auto_reason, cutoff),
)
self.connection.commit()
return cursor.rowcount
except Exception as exc:
logger.error(f"Error expiring stale workers: {exc}", exc_info=True)
return 0
def append_worker_stdout(self, worker_id: str, text: str, step: Optional[str] = None,
channel: str = "stdout") -> bool:
"""Append text to a worker's stdout log and timeline."""
if not text:
return True
try:
# Check if connection is valid
if not self.connection:
logger.warning(f"Database connection not available for worker {worker_id}")
return False
cursor = self.connection.cursor()
cursor.execute("SELECT stdout FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
if not row:
logger.warning(f"Worker {worker_id} not found for stdout append")
return False
current_stdout = row[0] or ""
separator = "" if not current_stdout else ("" if current_stdout.endswith("\n") else "\n")
new_stdout = f"{current_stdout}{separator}{text}\n"
cursor.execute("""
UPDATE worker SET stdout = ?, last_updated = CURRENT_TIMESTAMP,
last_stdout_at = CURRENT_TIMESTAMP
WHERE worker_id = ?
""", (new_stdout, worker_id))
self._insert_worker_log_entry(cursor, worker_id, 'stdout', text, step, channel)
self.connection.commit()
return cursor.rowcount > 0
except sqlite3.ProgrammingError as e:
# Handle "Cannot operate on a closed database" gracefully
if "closed database" in str(e).lower():
logger.warning(f"Database connection closed, cannot append stdout for worker {worker_id}")
return False
logger.error(f"Error appending stdout to worker {worker_id}: {e}", exc_info=True)
return False
except Exception as e:
logger.error(f"Error appending stdout to worker {worker_id}: {e}", exc_info=True)
return False
def get_worker_stdout(self, worker_id: str) -> str:
"""Get stdout logs for a worker."""
try:
cursor = self.connection.cursor()
cursor.execute("SELECT stdout FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
return row[0] if row and row[0] else ""
except Exception as e:
logger.error(f"Error getting worker stdout for {worker_id}: {e}", exc_info=True)
return ""
def append_worker_steps(self, worker_id: str, step_text: str) -> bool:
"""Append a step to a worker's step log and timeline."""
if not step_text:
return True
try:
cursor = self.connection.cursor()
cursor.execute("SELECT steps FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
if not row:
logger.warning(f"Worker {worker_id} not found for steps append")
return False
current_steps = row[0] or ""
timestamp = datetime.now().strftime('%H:%M:%S')
step_entry = f"[{timestamp}] {step_text}"
new_steps = (current_steps + "\n" if current_steps else "") + step_entry
cursor.execute("""
UPDATE worker SET steps = ?, last_updated = CURRENT_TIMESTAMP,
current_step = ?
WHERE worker_id = ?
""", (new_steps, step_text, worker_id))
self._insert_worker_log_entry(cursor, worker_id, 'step', step_text, step_text, 'step')
self.connection.commit()
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Error appending step to worker {worker_id}: {e}", exc_info=True)
return False
def get_worker_steps(self, worker_id: str) -> str:
"""Get step logs for a worker."""
try:
cursor = self.connection.cursor()
cursor.execute("SELECT steps FROM worker WHERE worker_id = ?", (worker_id,))
row = cursor.fetchone()
return row[0] if row and row[0] else ""
except Exception as e:
logger.error(f"Error getting worker steps for {worker_id}: {e}", exc_info=True)
return ""
def clear_worker_stdout(self, worker_id: str) -> bool:
"""Clear stdout logs for a worker."""
try:
cursor = self.connection.cursor()
cursor.execute("""
UPDATE worker SET stdout = '', last_updated = CURRENT_TIMESTAMP
WHERE worker_id = ?
""", (worker_id,))
self.clear_worker_events(worker_id, event_type='stdout')
self.connection.commit()
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Error clearing worker stdout: {e}", exc_info=True)
return False
def clear_finished_workers(self) -> int:
"""Delete all workers that are not currently running."""
try:
cursor = self.connection.cursor()
cursor.execute("DELETE FROM worker WHERE status != 'running'")
self.connection.commit()
return cursor.rowcount
except Exception as e:
logger.error(f"Error clearing finished workers: {e}", exc_info=True)
return 0
def close(self) -> None:
"""Close the database connection."""
try:
if self.connection:
self.connection.close()
logger.info("Database connection closed")
except Exception as e:
logger.error(f"Error closing database: {e}", exc_info=True)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.close()
# ============================================================================
# DATABASE QUERY API
# ============================================================================
class DatabaseAPI:
"""Query API wrapper for LocalLibraryDB providing specialized search methods."""
def __init__(self, search_dir: Path):
self.search_dir = search_dir
self.db = API_folder_store(search_dir)
def __enter__(self):
self.db.__enter__()
return self
def __exit__(self, *args):
return self.db.__exit__(*args)
def get_cursor(self):
return self.db.connection.cursor()
def get_file_hash_by_hash(self, file_hash: str) -> Optional[str]:
"""Get file hash from the database, or None if not found."""
cursor = self.get_cursor()
cursor.execute(
"SELECT hash FROM files WHERE LOWER(hash) = ?",
(file_hash.lower(),)
)
row = cursor.fetchone()
return row[0] if row else None
def get_all_file_hashes(self) -> Set[str]:
"""Get all file hashes in the database."""
cursor = self.get_cursor()
cursor.execute("SELECT hash FROM files")
return {row[0] for row in cursor.fetchall()}
def get_file_hashes_by_tag_pattern(self, query_pattern: str) -> List[tuple]:
"""Get (hash, tag) tuples matching a tag pattern."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT f.hash, t.tag
FROM files f
JOIN tags t ON f.hash = t.hash
WHERE LOWER(t.tag) LIKE ?
""",
(query_pattern,)
)
return cursor.fetchall()
def get_file_hashes_by_path_pattern(self, like_pattern: str) -> Set[str]:
"""Get hashes of files matching a path pattern."""
cursor = self.get_cursor()
cursor.execute(
"SELECT DISTINCT hash FROM files WHERE LOWER(file_path) LIKE ?",
(like_pattern,)
)
return {row[0] for row in cursor.fetchall()}
def get_file_hashes_by_tag_substring(self, like_pattern: str) -> Set[str]:
"""Get hashes of files matching a tag substring."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT f.hash
FROM files f
JOIN tags t ON f.hash = t.hash
WHERE LOWER(t.tag) LIKE ?
""",
(like_pattern,)
)
return {row[0] for row in cursor.fetchall()}
def get_file_metadata(self, file_hashes: Set[str], limit: Optional[int] = None) -> List[tuple]:
"""Get metadata for files given their hashes. Returns (hash, file_path, size, extension) tuples."""
if not file_hashes:
return []
cursor = self.get_cursor()
placeholders = ",".join(["?"] * len(file_hashes))
fetch_sql = f"""
SELECT hash, file_path,
COALESCE((SELECT size FROM metadata WHERE hash = files.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = files.hash), '') as ext
FROM files
WHERE hash IN ({placeholders})
ORDER BY file_path
LIMIT ?
"""
cursor.execute(fetch_sql, (*file_hashes, limit or len(file_hashes)))
return cursor.fetchall()
def get_all_files(self, limit: Optional[int] = None) -> List[tuple]:
"""Get all files in database. Returns (hash, file_path, size, ext) tuples."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT f.hash, f.file_path,
COALESCE((SELECT size FROM metadata WHERE hash = f.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = f.hash), '') as ext
FROM files f
ORDER BY file_path
LIMIT ?
""",
(limit or 1000,)
)
return cursor.fetchall()
def get_tags_for_file(self, file_hash: str) -> List[str]:
"""Get all tags for a file given its hash."""
cursor = self.get_cursor()
cursor.execute(
"SELECT tag FROM tags WHERE hash = ?",
(file_hash,)
)
return [row[0] for row in cursor.fetchall()]
def get_tags_by_namespace_and_file(self, file_hash: str, query_pattern: str) -> List[str]:
"""Get tags for a file matching a pattern."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT tag FROM tags
WHERE hash = ?
AND LOWER(tag) LIKE ?
""",
(file_hash, query_pattern)
)
return [row[0] for row in cursor.fetchall()]
def get_files_by_namespace_pattern(self, query_pattern: str, limit: Optional[int] = None) -> List[tuple]:
"""Get files with tags matching a pattern. Returns (hash, file_path, size, ext) tuples."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT f.hash, f.file_path,
COALESCE((SELECT size FROM metadata WHERE hash = f.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = f.hash), '') as ext
FROM files f
JOIN tags t ON f.hash = t.hash
WHERE LOWER(t.tag) LIKE ?
ORDER BY f.file_path
LIMIT ?
""",
(query_pattern, limit or 1000)
)
return cursor.fetchall()
def get_files_by_simple_tag_pattern(self, query_pattern: str, limit: Optional[int] = None) -> List[tuple]:
"""Get files with non-namespaced tags matching a pattern. Returns (hash, file_path, size, ext) tuples."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT f.hash, f.file_path,
COALESCE((SELECT size FROM metadata WHERE hash = f.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = f.hash), '') as ext
FROM files f
JOIN tags t ON f.hash = t.hash
WHERE LOWER(t.tag) LIKE ? AND LOWER(t.tag) NOT LIKE '%:%'
ORDER BY f.file_path
LIMIT ?
""",
(query_pattern, limit or 1000)
)
return cursor.fetchall()
def get_files_by_multiple_path_conditions(self, conditions: List[str], params: List[str], limit: Optional[int] = None) -> List[tuple]:
"""Get files matching multiple path conditions. Returns (hash, file_path, size, ext) tuples."""
cursor = self.get_cursor()
where_clause = " AND ".join(conditions)
sql = f"""
SELECT DISTINCT f.hash, f.file_path,
COALESCE((SELECT size FROM metadata WHERE hash = f.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = f.hash), '') as ext
FROM files f
WHERE {where_clause}
ORDER BY f.file_path
LIMIT ?
"""
cursor.execute(sql, (*params, limit or 10000))
return cursor.fetchall()
def get_files_by_title_tag_pattern(self, title_pattern: str, limit: Optional[int] = None) -> List[tuple]:
"""Get files with title tags matching a pattern. Returns (hash, file_path, size, ext) tuples."""
cursor = self.get_cursor()
cursor.execute(
"""
SELECT DISTINCT f.hash, f.file_path,
COALESCE((SELECT size FROM metadata WHERE hash = f.hash), 0) as size,
COALESCE((SELECT ext FROM metadata WHERE hash = f.hash), '') as ext
FROM files f
JOIN tags t ON f.hash = t.hash
WHERE LOWER(t.tag) LIKE ?
ORDER BY f.file_path
LIMIT ?
""",
(title_pattern, limit or 10000)
)
return cursor.fetchall()
# ============================================================================
# LIBRARY INITIALIZATION & MIGRATION
# ============================================================================
class LocalLibraryInitializer:
"""Initialize and synchronize local library database."""
def __init__(self, library_root: Path):
"""Initialize the database scanner."""
self.library_root = Path(library_root)
self.db = API_folder_store(library_root)
self.stats = {
'files_scanned': 0, 'files_new': 0, 'files_existing': 0,
'sidecars_imported': 0, 'sidecars_deleted': 0,
'tags_imported': 0, 'metadata_imported': 0, 'errors': 0
}
def scan_and_index(self) -> Dict[str, int]:
"""Scan library folder and populate database with file entries."""
try:
logger.info(f"Starting library scan at {self.library_root}")
media_files = self._find_media_files()
logger.info(f"Found {len(media_files)} media files")
db_files = self._get_database_files()
logger.info(f"Found {len(db_files)} files in database")
for file_path in media_files:
self._process_file(file_path, db_files)
self.db.connection.commit()
self._import_sidecars_batch()
self.db.connection.commit()
self._cleanup_orphaned_sidecars()
self.db.connection.commit()
logger.info(f"Library scan complete. Stats: {self.stats}")
return self.stats
except Exception as e:
logger.error(f"Error during library scan: {e}", exc_info=True)
self.stats['errors'] += 1
raise
finally:
self.db.close()
def _find_media_files(self) -> List[Path]:
"""Find all media files in the library folder."""
media_files = []
try:
for file_path in self.library_root.rglob("*"):
if file_path.is_file() and file_path.suffix.lower() in MEDIA_EXTENSIONS:
media_files.append(file_path)
except Exception as e:
logger.error(f"Error scanning media files: {e}", exc_info=True)
return sorted(media_files)
def _get_database_files(self) -> Dict[str, str]:
"""Get existing files from database by normalized path, returns {normalized_path: hash}."""
try:
cursor = self.db.connection.cursor()
cursor.execute("SELECT hash, file_path FROM files")
result = {}
for file_hash, file_path in cursor.fetchall():
normalized = str(Path(file_path).resolve()).lower()
result[normalized] = file_hash
return result
except Exception as e:
logger.error(f"Error getting database files: {e}", exc_info=True)
return {}
def _process_file(self, file_path: Path, db_files: Dict[str, int]) -> None:
"""Process a single media file."""
try:
normalized = str(file_path.resolve()).lower()
if normalized in db_files:
self.stats['files_existing'] += 1
else:
self.db.get_or_create_file_entry(file_path)
self.stats['files_new'] += 1
self.stats['files_scanned'] += 1
except Exception as e:
logger.warning(f"Error processing file {file_path}: {e}")
self.stats['errors'] += 1
def _import_sidecars_batch(self) -> None:
"""Batch import sidecars, hash files, and rename files to their hash."""
try:
sidecar_map = self._collect_sidecars()
for base_path, sidecars in sidecar_map.items():
try:
if not base_path.exists():
continue
tags = self._read_tag_sidecars(sidecars)
metadata_info = self._read_metadata_sidecar(sidecars)
note_text = self._read_notes_sidecar(sidecars)
hashed_path, file_hash = self._ensure_hashed_filename(base_path, sidecars)
# Always trust freshly computed hash
metadata_info['hash'] = file_hash
try:
stat_result = hashed_path.stat()
metadata_info.setdefault('size', stat_result.st_size)
metadata_info.setdefault('ext', hashed_path.suffix)
except OSError:
pass
self.db.save_file_info(hashed_path, metadata_info, tags)
if note_text:
self.db.save_note(hashed_path, note_text)
# Delete all sidecars after importing
self._delete_sidecars(sidecars)
self.stats['sidecars_imported'] += 1
except Exception as e:
logger.warning(f"Error importing sidecar bundle for {base_path}: {e}")
self.stats['errors'] += 1
except Exception as e:
logger.error(f"Error batch importing sidecars: {e}", exc_info=True)
def _collect_sidecars(self) -> Dict[Path, Dict[str, List[Path]]]:
"""Collect sidecars grouped by their base media file."""
sidecar_map: Dict[Path, Dict[str, List[Path]]] = {}
patterns = [
("*.tag", "tags"),
("*.tags", "tags"),
("*.metadata", "metadata"),
("*.notes", "notes"),
]
for pattern, key in patterns:
for sidecar in self.library_root.rglob(pattern):
try:
base = sidecar.with_suffix("")
except Exception:
continue
if not base.exists():
continue
bucket = sidecar_map.setdefault(base, {"tags": [], "metadata": [], "notes": []})
bucket[key].append(sidecar)
return sidecar_map
def _read_tag_sidecars(self, sidecars: Dict[str, List[Path]]) -> List[str]:
tags: List[str] = []
for tag_path in sidecars.get("tags", []):
try:
content = tag_path.read_text(encoding="utf-8")
except OSError:
continue
for raw_line in content.splitlines():
line = raw_line.strip()
if line:
tags.append(line)
return tags
def _read_metadata_sidecar(self, sidecars: Dict[str, List[Path]]) -> Dict[str, Any]:
metadata: Dict[str, Any] = {"url": [], "relationships": []}
meta_path = sidecars.get("metadata", [])
if not meta_path:
return metadata
for path in meta_path:
try:
content = path.read_text(encoding="utf-8")
except OSError:
continue
for raw_line in content.splitlines():
line = raw_line.strip()
if not line or line.startswith('#'):
continue
lower = line.lower()
if lower.startswith("hash:"):
metadata["hash"] = line.split(":", 1)[1].strip()
elif lower.startswith("url:") or lower.startswith("url:"):
url_part = line.split(":", 1)[1].strip()
if url_part:
for url_segment in url_part.replace(",", " ").split():
clean = url_segment.strip()
if clean and clean not in metadata["url"]:
metadata["url"].append(clean)
elif lower.startswith("relationship:"):
rel_value = line.split(":", 1)[1].strip()
if rel_value:
metadata["relationships"].append(rel_value)
return metadata
def _read_notes_sidecar(self, sidecars: Dict[str, List[Path]]) -> Optional[str]:
note_paths = sidecars.get("notes", [])
for note_path in note_paths:
try:
content = note_path.read_text(encoding="utf-8").strip()
except OSError:
continue
if content:
return content
return None
def _ensure_hashed_filename(self, file_path: Path, sidecars: Dict[str, List[Path]]) -> Tuple[Path, str]:
"""Compute hash, rename file to hash-based name, and move sidecars accordingly."""
file_hash = sha256_file(file_path)
target_name = f"{file_hash}{file_path.suffix}"
target_path = file_path.with_name(target_name)
# Nothing to do if already hashed
if target_path == file_path:
return file_path, file_hash
try:
if target_path.exists():
logger.warning(f"Hash target already exists, keeping original: {target_path}")
return file_path, file_hash
file_path.rename(target_path)
self._rename_sidecars(file_path, target_path, sidecars)
try:
self.db.rename_file(file_path, target_path)
except Exception:
# Entry might not exist yet; it will be created during save.
pass
return target_path, file_hash
except Exception as e:
logger.warning(f"Failed to rename {file_path} to hash {target_path}: {e}")
return file_path, file_hash
def _rename_sidecars(self, old_base: Path, new_base: Path, sidecars: Dict[str, List[Path]]) -> None:
"""Rename sidecars to follow the new hashed filename."""
mappings = [
(sidecars.get("tags", []), ".tag"),
(sidecars.get("metadata", []), ".metadata"),
(sidecars.get("notes", []), ".notes"),
]
for candidates, suffix in mappings:
for source in candidates:
try:
dest = new_base.with_name(new_base.name + suffix)
except Exception:
continue
if dest == source:
continue
try:
source.rename(dest)
except Exception as e:
logger.warning(f"Failed to rename sidecar {source} -> {dest}: {e}")
def _delete_sidecars(self, sidecars: Dict[str, List[Path]]) -> None:
"""Delete sidecar files after they've been imported."""
for sidecar_list in sidecars.values():
for sidecar_path in sidecar_list:
try:
if sidecar_path.exists():
sidecar_path.unlink()
self.stats['sidecars_deleted'] += 1
except Exception as e:
logger.warning(f"Could not delete sidecar {sidecar_path}: {e}")
def _cleanup_orphaned_sidecars(self) -> None:
"""Remove sidecars for non-existent files."""
try:
patterns = ["*.tag", "*.tags", "*.metadata", "*.notes"]
for pattern in patterns:
for sidecar_path in self.library_root.rglob(pattern):
base_path = sidecar_path.with_suffix("")
if not base_path.exists():
try:
sidecar_path.unlink()
self.stats['sidecars_deleted'] += 1
except Exception as e:
logger.warning(f"Could not delete orphaned sidecar {sidecar_path}: {e}")
except Exception as e:
logger.error(f"Error cleaning up orphaned sidecars: {e}", exc_info=True)
def migrate_tags_to_db(library_root: Path, db: API_folder_store) -> int:
"""Migrate .tags files to the database."""
migrated_count = 0
try:
for tags_file in library_root.rglob("*.tags"):
try:
base_path = Path(str(tags_file)[:-len('.tags')])
tags_text = tags_file.read_text(encoding='utf-8')
tags = [line.strip() for line in tags_text.splitlines() if line.strip()]
db.save_tags(base_path, tags)
migrated_count += 1
try:
tags_file.unlink()
logger.info(f"Migrated and deleted {tags_file}")
except Exception as e:
logger.warning(f"Migrated {tags_file} but failed to delete: {e}")
except Exception as e:
logger.warning(f"Failed to migrate {tags_file}: {e}")
logger.info(f"Migrated {migrated_count} .tags files to database")
return migrated_count
except Exception as e:
logger.error(f"Error during tags migration: {e}", exc_info=True)
return migrated_count
def migrate_metadata_to_db(library_root: Path, db: API_folder_store) -> int:
"""Migrate .metadata files to the database."""
migrated_count = 0
try:
for metadata_file in library_root.rglob("*.metadata"):
try:
base_path = Path(str(metadata_file)[:-len('.metadata')])
metadata_text = metadata_file.read_text(encoding='utf-8')
metadata = _parse_metadata_file(metadata_text)
db.save_metadata(base_path, metadata)
migrated_count += 1
try:
metadata_file.unlink()
logger.info(f"Migrated and deleted {metadata_file}")
except Exception as e:
logger.warning(f"Migrated {metadata_file} but failed to delete: {e}")
except Exception as e:
logger.warning(f"Failed to migrate {metadata_file}: {e}")
logger.info(f"Migrated {migrated_count} .metadata files to database")
return migrated_count
except Exception as e:
logger.error(f"Error during metadata migration: {e}", exc_info=True)
return migrated_count
def _parse_metadata_file(content: str) -> Dict[str, Any]:
"""Parse metadata file content."""
try:
return json.loads(content)
except json.JSONDecodeError:
logger.warning("Could not parse metadata JSON, returning empty dict")
return {}
def migrate_all(library_root: Path, db: Optional[API_folder_store] = None) -> Dict[str, int]:
"""Migrate all sidecar files to database."""
should_close = db is None
try:
if db is None:
db = API_folder_store(library_root)
return {
'tags': migrate_tags_to_db(library_root, db),
'metadata': migrate_metadata_to_db(library_root, db),
}
finally:
if should_close:
db.close()
# ============================================================================
# SEARCH OPTIMIZATION
# ============================================================================
class LocalLibrarySearchOptimizer:
"""Optimizer that uses database for local library searches."""
def __init__(self, library_root: Path):
"""Initialize the search optimizer."""
self.library_root = Path(library_root)
self.db: Optional[API_folder_store] = None
def __enter__(self):
"""Context manager entry."""
self.db = API_folder_store(self.library_root)
return self
def __exit__(self, exc_type, exc_val, exc_tb):
"""Context manager exit."""
if self.db:
self.db.close()
def get_cached_tags(self, file_path: Path) -> List[str]:
"""Get tags from database cache."""
if not self.db:
return []
return self.db.get_tags(file_path)
def get_cached_metadata(self, file_path: Path) -> Optional[Dict[str, Any]]:
"""Get metadata from database cache."""
if not self.db:
return None
return self.db.get_metadata(file_path)
def prefetch_metadata(self, file_paths: List[Path]) -> None:
"""Pre-cache metadata for multiple files."""
if not self.db:
return
for file_path in file_paths:
try:
self.db.get_or_create_file_entry(file_path)
except Exception as e:
logger.warning(f"Failed to prefetch {file_path}: {e}")
def update_search_result_with_cached_data(self, search_result: Any, file_path: Path) -> None:
"""Update a search result object with cached database data."""
if not self.db:
return
try:
tags = self.db.get_tags(file_path)
if tags:
search_result.tag_summary = ", ".join(tags)
metadata = self.db.get_metadata(file_path)
if metadata:
if 'hash' in metadata:
search_result.hash_hex = metadata['hash']
if 'duration' in metadata:
search_result.duration_seconds = metadata['duration']
if 'media_kind' in metadata:
search_result.media_kind = metadata['media_kind']
except Exception as e:
logger.warning(f"Failed to update search result for {file_path}: {e}")
def search_by_tag(self, tag: str, limit: int = 100) -> List[Path]:
"""Fast tag-based search using database."""
if not self.db:
return []
try:
cursor = self.db.connection.cursor()
cursor.execute("""
SELECT f.file_path
FROM files f
JOIN tags t ON f.id = t.file_id
WHERE t.tag LIKE ?
LIMIT ?
""", (f"%{tag}%", limit))
return [Path(row[0]) for row in cursor.fetchall()]
except Exception as e:
logger.error(f"Tag search failed: {e}")
return []
def save_playlist(self, name: str, items: List[Dict[str, Any]]) -> bool:
"""Save a playlist to the database."""
if not self.db:
return False
try:
cursor = self.db.connection.cursor()
items_json = json.dumps(items)
cursor.execute("""
INSERT INTO playlists (name, items, updated_at)
VALUES (?, ?, CURRENT_TIMESTAMP)
ON CONFLICT(name) DO UPDATE SET
items = excluded.items,
updated_at = CURRENT_TIMESTAMP
""", (name, items_json))
self.db.connection.commit()
return True
except Exception as e:
logger.error(f"Failed to save playlist {name}: {e}")
return False
def get_playlists(self) -> List[Dict[str, Any]]:
"""Get all saved playlists."""
if not self.db:
return []
try:
cursor = self.db.connection.cursor()
cursor.execute("SELECT id, name, items, updated_at FROM playlists ORDER BY updated_at DESC")
results = []
for row in cursor.fetchall():
try:
items = json.loads(row['items'])
except json.JSONDecodeError:
items = []
results.append({
'id': row['id'],
'name': row['name'],
'items': items,
'updated_at': row['updated_at']
})
return results
except Exception as e:
logger.error(f"Failed to get playlists: {e}")
return []
def get_playlist(self, name: str) -> Optional[List[Dict[str, Any]]]:
"""Get a specific playlist by name."""
if not self.db:
return None
try:
cursor = self.db.connection.cursor()
cursor.execute("SELECT items FROM playlists WHERE name = ?", (name,))
row = cursor.fetchone()
if row:
try:
return json.loads(row['items'])
except json.JSONDecodeError:
return []
return None
except Exception as e:
logger.error(f"Failed to get playlist {name}: {e}")
return None
def get_playlist_by_id(self, playlist_id: int) -> Optional[Tuple[str, List[Dict[str, Any]]]]:
"""Get a specific playlist by ID. Returns (name, items)."""
if not self.db:
return None
try:
cursor = self.db.connection.cursor()
cursor.execute("SELECT name, items FROM playlists WHERE id = ?", (playlist_id,))
row = cursor.fetchone()
if row:
try:
items = json.loads(row['items'])
return (row['name'], items)
except json.JSONDecodeError:
return (row['name'], [])
return None
except Exception as e:
logger.error(f"Failed to get playlist ID {playlist_id}: {e}")
return None
def delete_playlist(self, playlist_id: int) -> bool:
"""Delete a playlist by ID."""
if not self.db:
return False
try:
cursor = self.db.connection.cursor()
cursor.execute("DELETE FROM playlists WHERE id = ?", (playlist_id,))
self.db.connection.commit()
return cursor.rowcount > 0
except Exception as e:
logger.error(f"Failed to delete playlist ID {playlist_id}: {e}")
return False
if not self.db:
return []
return self.db.search_by_tag(tag, limit)
def search_by_hash(self, file_hash: str) -> Optional[Path]:
"""Fast hash-based search using database."""
if not self.db:
return None
return self.db.search_hash(file_hash)
def set_relationship(self, file_path: Path, related_file_path: Path, rel_type: str = "alt") -> None:
"""Set a relationship between two files in the database.
Delegates to LocalLibraryDB.set_relationship().
Args:
file_path: Path to the first file
related_file_path: Path to the related file
rel_type: Type of relationship ('king', 'alt', 'related', etc.)
"""
if not self.db:
return
self.db.set_relationship(file_path, related_file_path, rel_type)
def find_files_pointing_to(self, target_path: Path) -> List[Dict[str, Any]]:
"""Find all files that have a relationship pointing to the target path."""
if not self.db:
return []
return self.db.find_files_pointing_to(target_path)
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