625 lines
26 KiB
Python
625 lines
26 KiB
Python
# markdown_sqlite.py
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"""
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This script processes a markdown file by reading its content and
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updates an SQLite database with document content and metadata.
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The user can then select specific topics based on command-line arguments.
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The script tracks changes using MD5 hashes and ensures the database
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reflects the current state of the markdown file.
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"""
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import os
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import sqlite3
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import hashlib
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import argparse
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import logging
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from datetime import datetime
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from typing import List, Tuple, Dict, Set, Optional
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from markdown_it import MarkdownIt
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from thefuzz import fuzz, process
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class DatabaseManager:
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"""Manages database connections and table creation."""
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def __init__(self, db_file: str):
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"""Initialize the DatabaseManager."""
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self.conn: sqlite3.Connection = sqlite3.connect(db_file, timeout=10)
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self.cursor: sqlite3.Cursor = self.conn.cursor()
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self.create_tables()
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def create_tables(self) -> None:
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"""Create necessary tables in the database if they don't exist."""
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self.cursor.executescript('''
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CREATE TABLE IF NOT EXISTS documents (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT NOT NULL UNIQUE,
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file_path TEXT NOT NULL,
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md5sum TEXT,
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added_timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_timestamp DATETIME,
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deleted_timestamp DATETIME,
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isDeleted BOOLEAN DEFAULT 0
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);
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CREATE TABLE IF NOT EXISTS headings (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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level INTEGER NOT NULL,
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title TEXT NOT NULL,
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parent_id INTEGER,
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document_id INTEGER NOT NULL,
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added_timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_timestamp DATETIME,
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deleted_timestamp DATETIME,
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isDeleted BOOLEAN DEFAULT 0,
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FOREIGN KEY (parent_id) REFERENCES headings(id),
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FOREIGN KEY (document_id) REFERENCES documents(id)
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);
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CREATE TABLE IF NOT EXISTS body (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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content TEXT,
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heading_id INTEGER NOT NULL,
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document_id INTEGER NOT NULL,
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md5sum TEXT,
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added_timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_timestamp DATETIME,
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deleted_timestamp DATETIME,
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isDeleted BOOLEAN DEFAULT 0,
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FOREIGN KEY (heading_id) REFERENCES headings(id),
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FOREIGN KEY (document_id) REFERENCES documents(id)
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);
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''')
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def close(self) -> None:
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"""Close the database connection."""
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self.conn.close()
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class DocumentManager:
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"""Manages document-related operations in the database."""
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def __init__(self, db_manager: 'DatabaseManager'):
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self.db_manager: DatabaseManager = db_manager
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def document_exists(self, document_name: str) -> Optional[Tuple[int]]:
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"""
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Check if a document exists in the database.
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Args:
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document_name: Name of the document to check.
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Returns:
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Document ID if it exists, None otherwise.
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"""
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self.db_manager.cursor.execute('SELECT id FROM documents WHERE name = ?', (document_name,))
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return self.db_manager.cursor.fetchone()
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def create_document(self, name: str, file_path: str) -> Optional[int]:
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"""Create a new document entry in the database."""
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logging.debug(f"** Creating new document entry to database")
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now: str = datetime.now().isoformat()
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self.db_manager.cursor.execute('''
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INSERT INTO documents (name, file_path, added_timestamp) VALUES (?, ?, ?)
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''', (name, file_path, now))
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self.db_manager.conn.commit()
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return self.db_manager.cursor.lastrowid
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def update_document(self, document_id: int, name: Optional[str] = None, file_path: Optional[str] = None) -> None:
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"""Update an existing document in the database."""
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logging.debug(f"** Updating document, document_id: {document_id}")
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now: str = datetime.now().isoformat()
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if name:
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self.db_manager.cursor.execute('''
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UPDATE documents SET name = ?, updated_timestamp = ? WHERE id = ?
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''', (name, now, document_id))
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if file_path:
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self.db_manager.cursor.execute('''
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UPDATE documents SET file_path = ?, updated_timestamp = ? WHERE id = ?
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''', (file_path, now, document_id))
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self.db_manager.conn.commit()
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def soft_delete_document(self, document_id: int) -> None:
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"""Soft delete a document by marking it as deleted in the database."""
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logging.debug(f"** This now soft deleted, document_id: {document_id}")
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now: str = datetime.now().isoformat()
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self.db_manager.cursor.execute('''
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UPDATE documents SET isDeleted = 1, deleted_timestamp = ? WHERE id = ?
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''', (now, document_id))
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self.db_manager.conn.commit()
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def read_documents(self) -> List[Tuple]:
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"""Retrieve all non-deleted documents from the database."""
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self.db_manager.cursor.execute('SELECT * FROM documents WHERE isDeleted = 0')
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return self.db_manager.cursor.fetchall()
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def update_document_hash(self, document_id: int, md5sum: str) -> None:
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"""Update the MD5 hash of a document in the database."""
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self.db_manager.cursor.execute('UPDATE documents SET md5sum = ? WHERE id = ?', (md5sum, document_id))
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self.db_manager.conn.commit()
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class MarkdownProcessor:
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"""Processes markdown files and stores content in the database."""
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def __init__(self, db_manager: 'DatabaseManager') -> None:
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self.db_manager = db_manager
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def process_markdown(self, markdown_file: str, document_id: int) -> None:
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markdown_text = self.read_markdown_file(markdown_file)
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md = MarkdownIt()
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tokens = md.parse(markdown_text)
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self.update_document_content(tokens, document_id)
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def read_markdown_file(self, file_path: str) -> str:
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with open(file_path, 'r', encoding='utf-8') as file:
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return file.read()
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def update_document_content(self, tokens: List, document_id: int) -> None:
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existing_structure = self.get_existing_document_structure(document_id)
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new_structure = self.parse_new_structure(tokens)
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self.merge_structures(existing_structure, new_structure, document_id)
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def get_existing_document_structure(self, document_id: int) -> Dict:
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structure = {}
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self.db_manager.cursor.execute('''
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SELECT h.id, h.level, h.title, h.parent_id, b.content
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FROM headings h
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LEFT JOIN body b ON h.id = b.heading_id
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WHERE h.document_id = ? AND h.isDeleted = 0
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ORDER BY h.level, h.id
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''', (document_id,))
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for heading_id, level, title, parent_id, content in self.db_manager.cursor.fetchall():
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structure[heading_id] = {
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'level': level,
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'title': title,
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'parent_id': parent_id,
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'content': content,
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'children': []
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}
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# Build the tree structure
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root = {}
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for id, node in structure.items():
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if node['parent_id'] in structure:
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structure[node['parent_id']]['children'].append(id)
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else:
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root[id] = node
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return root
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def parse_new_structure(self, tokens: List) -> Dict:
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structure = {}
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current_heading = None
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current_content = []
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parent_stack = [{"id": None, "level": 0}]
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for token in tokens:
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if token.type == 'heading_open':
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if current_heading:
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structure[current_heading]['content'] = ''.join(current_content).strip()
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level = int(token.tag.strip('h'))
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while parent_stack[-1]['level'] >= level:
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parent_stack.pop()
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current_heading = str(uuid.uuid4()) # Generate a temporary ID
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structure[current_heading] = {
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'level': level,
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'title': '',
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'parent_id': parent_stack[-1]['id'],
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'content': '',
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'children': []
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}
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parent_stack.append({"id": current_heading, "level": level})
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current_content = []
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elif token.type == 'heading_close':
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structure[current_heading]['content'] = ''.join(current_content).strip()
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elif token.type == 'inline' and current_heading:
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if structure[current_heading]['title'] == '':
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structure[current_heading]['title'] = token.content
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else:
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current_content.append(token.content)
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elif current_heading:
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current_content.append(token.content)
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if current_heading:
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structure[current_heading]['content'] = ''.join(current_content).strip()
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return structure
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def merge_structures(self, existing: Dict, new: Dict, document_id: int) -> None:
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def merge_recursive(existing_node, new_node, parent_id):
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if not existing_node:
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# This is a new node, insert it
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heading_id = self.insert_heading(new_node['level'], new_node['title'], parent_id, document_id)
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self.insert_body(new_node['content'], heading_id, document_id)
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for child in new_node['children']:
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merge_recursive(None, new[child], heading_id)
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else:
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# Update existing node
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self.update_heading(existing_node['id'], new_node['title'], new_node['level'], parent_id)
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self.update_body(existing_node['id'], new_node['content'], document_id)
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# Process children
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existing_children = {child['title']: child for child in existing_node['children']}
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new_children = {child['title']: child for child in new_node['children']}
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for title, child in new_children.items():
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if title in existing_children:
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merge_recursive(existing_children[title], child, existing_node['id'])
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else:
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merge_recursive(None, child, existing_node['id'])
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for title, child in existing_children.items():
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if title not in new_children:
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self.soft_delete_heading(child['id'])
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for new_root in new.values():
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existing_root = next((node for node in existing.values() if node['title'] == new_root['title']), None)
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merge_recursive(existing_root, new_root, None)
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def insert_heading(self, level: int, title: str, parent_id: Optional[int], document_id: int) -> int:
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self.db_manager.cursor.execute('''
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INSERT INTO headings (level, title, parent_id, document_id)
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VALUES (?, ?, ?, ?)
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''', (level, title, parent_id, document_id))
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return self.db_manager.cursor.lastrowid
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def update_heading(self, heading_id: int, title: str, level: int, parent_id: Optional[int]) -> None:
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self.db_manager.cursor.execute('''
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UPDATE headings
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SET title = ?, level = ?, parent_id = ?, updated_timestamp = CURRENT_TIMESTAMP
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WHERE id = ?
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''', (title, level, parent_id, heading_id))
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def insert_body(self, content: str, heading_id: int, document_id: int) -> None:
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md5sum = hashlib.md5(content.encode()).hexdigest()
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self.db_manager.cursor.execute('''
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INSERT INTO body (content, heading_id, document_id, md5sum)
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VALUES (?, ?, ?, ?)
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''', (content, heading_id, document_id, md5sum))
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def update_body(self, heading_id: int, content: str, document_id: int) -> None:
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md5sum = hashlib.md5(content.encode()).hexdigest()
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self.db_manager.cursor.execute('''
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UPDATE body
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SET content = ?, md5sum = ?, updated_timestamp = CURRENT_TIMESTAMP
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WHERE heading_id = ? AND document_id = ?
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''', (content, md5sum, heading_id, document_id))
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def soft_delete_heading(self, heading_id: int) -> None:
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now = datetime.now().isoformat()
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self.db_manager.cursor.execute('''
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UPDATE headings
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SET isDeleted = 1, deleted_timestamp = ?
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WHERE id = ?
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''', (now, heading_id))
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# Also soft delete associated body content
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self.db_manager.cursor.execute('''
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UPDATE body
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SET isDeleted = 1, deleted_timestamp = ?
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WHERE heading_id = ?
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''', (now, heading_id))
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class TopicReader:
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"""Reads and retrieves topics from the database."""
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def __init__(self, db_manager: 'DatabaseManager'):
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self.db_manager = db_manager
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def fetch_headings(self) -> List[Tuple[int, str, int, Optional[int]]]:
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self.db_manager.cursor.execute('''
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SELECT id, title, level, parent_id
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FROM headings
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WHERE isDeleted = 0
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ORDER BY level, id
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''')
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return self.db_manager.cursor.fetchall()
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def fetch_topic_chain(self, heading_id: int) -> List[Tuple[int, str, int]]:
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chain = []
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current_id = heading_id
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while current_id is not None:
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self.db_manager.cursor.execute('''
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SELECT id, title, level, parent_id
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FROM headings
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WHERE id = ?
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''', (current_id,))
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result = self.db_manager.cursor.fetchone()
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if result:
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chain.append((result[0], result[1], result[2]))
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current_id = result[3]
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else:
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break
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return list(reversed(chain))
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def list_headings(self) -> str:
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headings = self.fetch_headings()
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result = "Available headings:\n"
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def build_tree(parent_id, level):
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tree = ""
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for id, title, hlevel, parent in headings:
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if parent == parent_id:
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indent = " " * (hlevel - 1)
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tree += f"{indent}- {title}\n"
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tree += build_tree(id, hlevel + 1)
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return tree
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result += build_tree(None, 1)
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return result.strip()
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def get_topic_content(self, input_title: str) -> Optional[str]:
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heading_id = self.find_closest_heading(input_title)
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if heading_id:
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topic_chain = self.fetch_topic_chain(heading_id)
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result = self.build_full_content(topic_chain[-1][0])
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return result
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return None
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def build_full_content(self, heading_id: int, level_offset: int = 0) -> str:
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self.db_manager.cursor.execute('''
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SELECT h.level, h.title, b.content
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FROM headings h
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LEFT JOIN body b ON h.id = b.heading_id
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WHERE h.id = ? AND h.isDeleted = 0
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''', (heading_id,))
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heading = self.db_manager.cursor.fetchone()
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if not heading:
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return ""
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level, title, content = heading
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adjusted_level = max(1, level - level_offset)
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result = f"{'#' * adjusted_level} {title}\n\n"
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if content:
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result += f"{content.strip()}\n\n"
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# Fetch and process all child headings
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self.db_manager.cursor.execute('''
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SELECT id FROM headings
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WHERE parent_id = ? AND isDeleted = 0
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ORDER BY level, id
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''', (heading_id,))
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children = self.db_manager.cursor.fetchall()
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for child in children:
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result += self.build_full_content(child[0], level_offset)
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return result
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def find_closest_heading(self, input_title: str) -> Optional[int]:
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headings = self.fetch_headings()
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if not headings:
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print("No topics found in the database.")
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return None
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heading_titles = [title for _, title, _, _ in headings]
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closest_match, confidence = process.extractOne(input_title, heading_titles, scorer=fuzz.token_sort_ratio)
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if confidence < 50:
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print(f"No close matches found for '{input_title}' (Confidence: {confidence})")
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return None
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for heading_id, title, _, _ in headings:
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if title == closest_match:
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return heading_id
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return None
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def compute_file_hash(file_path: str) -> str:
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"""
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Compute the MD5 hash of a file.
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"""
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hash_md5 = hashlib.md5()
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with open(file_path, "rb") as f:
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for chunk in iter(lambda: f.read(4096), b""):
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hash_md5.update(chunk)
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return hash_md5.hexdigest()
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def generate_calendar(year: int) -> str:
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"""Generate a markdown calendar for the specified year."""
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calendar_markdown = f"# {year}\n\n"
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current_date = datetime.now().date()
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for month in range(1, 13):
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month_name = datetime(year, month, 1).strftime('%B')
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calendar_markdown += f"## {month:02d} / {month_name}\n\n"
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# Calculate the number of days in the month
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num_days = (datetime(year, month + 1, 1) - datetime(year, month, 1)).days if month < 12 else (datetime(year + 1, 1, 1) - datetime(year, month, 1)).days
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# Generate calendar entries for each day
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for day in range(1, num_days + 1):
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day_date = datetime(year, month, day).date()
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day_name = day_date.strftime('%a')
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# Check if this is the current day and make it bold if so
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if str(day_date) == str(current_date):
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calendar_markdown += f"**{day:02d} / {day_name}**\n"
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else:
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calendar_markdown += f"{day:02d} / {day_name}\n"
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calendar_markdown += "\n" # Add a newline after each month
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return calendar_markdown
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def convert_to_html(markdown_content: str) -> str:
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"""
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Convert Markdown content to HTML.
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"""
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md = MarkdownIt()
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html_content = md.render(markdown_content)
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# Wrap the content in a basic HTML structure
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html_document = f"""
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Calendar</title>
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<style>
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body {{ font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }}
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h1, h2, h3, h4, h5, h6 {{ margin-top: 24px; margin-bottom: 16px; }}
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h1 {{ font-size: 2em; }}
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h2 {{ font-size: 1.5em; }}
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h3 {{ font-size: 1.25em; }}
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</style>
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</head>
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<body>
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{html_content}
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</body>
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</html>
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"""
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return html_document
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def bootstrap_calendar(year: int, db_manager: DatabaseManager, markdown_file: str):
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"""Generate and store a full year's markdown calendar in the database."""
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calendar_content = generate_calendar(year)
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# Write the calendar to the specified markdown file
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with open(markdown_file, 'w', encoding='utf-8') as f:
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f.write(calendar_content)
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# Now use the DocumentManager and MarkdownProcessor to read this file into the database
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document_manager = DocumentManager(db_manager)
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document_id = document_manager.create_document(os.path.basename(markdown_file), markdown_file)
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markdown_processor = MarkdownProcessor(db_manager)
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markdown_processor.process_markdown(markdown_file, document_id)
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print(f"Calendar for year {year} has been generated and stored in the database.")
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def main():
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"""
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This script processes a markdown file, updates an SQLite database,
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and optionally selects a topic based on user input.
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Initializes managers for database and markdown handling. Updates documents based on
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MD5 hash changes, and if a topic is provided, retrieves and writes its content
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to the markdown file.
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Args:
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-m, --markdown: Path to markdown file (default: 'calendar.md').
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-d, --database: Path to SQLite database file (default: 'markdown.db').
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|
topic_title: Optional topic for content selection (fuzzy matching enabled).
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--bootstrap: If provided, generates markdown calendar for the current year and loads it to the database.
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--ls: If provided, lists all available headings.
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--html: If provided, will produce {filename}.html file along the markdown file.
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"""
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# Set up command-line argument parsing
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parser = argparse.ArgumentParser(description='Process markdown file and optionally select a topic.')
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parser.add_argument('-m', '--markdown', type=str, default='calendar.md', help='Input/output markdown file (default: calendar.md)')
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parser.add_argument('-d', '--database', type=str, default='markdown.db', help='SQLite database file (default: markdown.db)')
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parser.add_argument('topic_title', nargs='?', type=str, help='Topic title to select (fuzzy matching enabled)')
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parser.add_argument('--bootstrap', action='store_true', help='Generate markdown calendar for the current year and load it to the database.')
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parser.add_argument('--ls', action='store_true', help='List all available headings.')
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parser.add_argument('--html', action='store_true', help='Generate an HTML version of the output')
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parser.add_argument('--debug', action='store_true', help='Enable debug printing')
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|
args = parser.parse_args()
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|
|
|
# Set up logging
|
|
logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO)
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|
|
|
|
|
# Use the provided or default file paths
|
|
markdown_file = args.markdown
|
|
database_file = args.database
|
|
|
|
# Initialize manager objects for database operations
|
|
db_manager = DatabaseManager(database_file)
|
|
|
|
if args.bootstrap:
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|
bootstrap_calendar(datetime.now().year, db_manager, markdown_file)
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|
db_manager.close()
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|
return
|
|
|
|
if args.ls:
|
|
topic_reader = TopicReader(db_manager)
|
|
print(topic_reader.list_headings())
|
|
db_manager.close()
|
|
return
|
|
|
|
# Check if the markdown file exists
|
|
if not os.path.exists(markdown_file):
|
|
print(f"Error: Markdown file '{markdown_file}' not found. Use --bootstrap to create a new calendar.")
|
|
db_manager.close()
|
|
return
|
|
|
|
document_manager = DocumentManager(db_manager)
|
|
markdown_processor = MarkdownProcessor(db_manager)
|
|
|
|
# Get the base name of the markdown file (without path)
|
|
document_name = os.path.basename(markdown_file)
|
|
|
|
# Check if the document already exists in the database
|
|
document = db_manager.cursor.execute('SELECT id, file_path, md5sum, updated_timestamp FROM documents WHERE name = ?', (document_name,)).fetchone()
|
|
|
|
# Compute the current MD5 hash of the markdown file
|
|
current_file_hash = compute_file_hash(markdown_file)
|
|
|
|
if document:
|
|
# If the document exists in the database
|
|
document_id, stored_file_path, stored_md5sum, last_updated = document
|
|
|
|
if stored_file_path != markdown_file:
|
|
print(f"Updating file path for '{document_name}' in the database...")
|
|
document_manager.update_document(document_id, file_path=markdown_file)
|
|
|
|
if stored_md5sum != current_file_hash:
|
|
# If the file has changed since last update
|
|
print(f"File '{document_name}' has changed. Updating the database...")
|
|
document_manager.update_document_hash(document_id, current_file_hash)
|
|
markdown_processor.process_markdown(markdown_file, document_id)
|
|
else:
|
|
# If the file hasn't changed
|
|
print(f"File '{document_name}' has not changed. Skipping update.")
|
|
else:
|
|
# If the document doesn't exist in the database
|
|
print(f"Document '{document_name}' not found in the database. Adding new entry...")
|
|
document_id = document_manager.create_document(document_name, markdown_file)
|
|
document_manager.update_document_hash(document_id, current_file_hash)
|
|
markdown_processor.process_markdown(markdown_file, document_id)
|
|
|
|
# Check if a topic title argument is provided
|
|
if args.topic_title:
|
|
# Initialize TopicReader
|
|
topic_reader = TopicReader(db_manager)
|
|
|
|
# Retrieve the content for the specified topic
|
|
result = topic_reader.get_topic_content(args.topic_title)
|
|
|
|
if result:
|
|
# If content is found, write it back to the original markdown file
|
|
with open(markdown_file, 'w', encoding='utf-8') as file:
|
|
file.write(result)
|
|
file.write('\n')
|
|
print(f"Selected topic and subtopics written to {markdown_file}")
|
|
|
|
# Generate HTML if --html option is specified
|
|
if args.html:
|
|
html_file = os.path.splitext(markdown_file)[0] + '.html'
|
|
html_content = convert_to_html(result)
|
|
with open(html_file, 'w', encoding='utf-8') as file:
|
|
file.write(html_content)
|
|
print(f"HTML version written to {html_file}")
|
|
|
|
# Update the document hash in the database
|
|
new_file_hash = compute_file_hash(markdown_file)
|
|
document_manager.update_document_hash(document_id, new_file_hash)
|
|
else:
|
|
# If no content is found
|
|
print("No result to write. The original file remains unchanged.")
|
|
else:
|
|
print("No topic title provided. The database has been updated/added without modifying the file.")
|
|
|
|
# Generate HTML for the entire document if --html option is specified
|
|
if args.html:
|
|
with open(markdown_file, 'r', encoding='utf-8') as file:
|
|
markdown_content = file.read()
|
|
html_file = os.path.splitext(markdown_file)[0] + '.html'
|
|
html_content = convert_to_html(markdown_content)
|
|
with open(html_file, 'w', encoding='utf-8') as file:
|
|
file.write(html_content)
|
|
print(f"HTML version of the entire document written to {html_file}")
|
|
|
|
# Close the database connection
|
|
db_manager.close()
|
|
|
|
if __name__ == '__main__':
|
|
main()
|