Some what working demo. The query result are still little bit wonky..
This commit is contained in:
kalzu rekku
525
markdown_sqlite.py
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525
markdown_sqlite.py
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# 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 sqlite3
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import hashlib
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import argparse
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import os
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from datetime import datetime
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from typing import List, Tuple, 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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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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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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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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"""Initialize the MarkdownProcessor."""
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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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"""Process a markdown file and store its content in the database."""
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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.clear_document_content(document_id)
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self.store_markdown_content(tokens, document_id)
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def read_markdown_file(self, file_path: str) -> str:
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"""Read content from a markdown file."""
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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 clear_document_content(self, document_id: int) -> None:
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"""Clear existing content for a document in the database."""
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self.db_manager.cursor.execute('DELETE FROM headings WHERE document_id = ?', (document_id,))
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self.db_manager.cursor.execute('DELETE FROM body WHERE document_id = ?', (document_id,))
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def store_markdown_content(self, tokens: List, document_id: int) -> None:
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"""Store parsed markdown content in the database."""
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parent_stack: List[Optional[int]] = []
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for token in tokens:
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if token.type == 'heading_open':
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level = int(token.tag.strip('h'))
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content_token = tokens[tokens.index(token) + 1]
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title = content_token.content
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parent_id = parent_stack[-1] if parent_stack else None
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heading_id = self.insert_heading(level, title, parent_id, document_id)
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if not parent_stack or level > len(parent_stack):
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parent_stack.append(heading_id)
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else:
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while parent_stack and level <= len(parent_stack):
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parent_stack.pop()
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parent_stack.append(heading_id)
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elif token.type == 'inline' and parent_stack:
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self.insert_body(token.content, parent_stack[-1], document_id)
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self.db_manager.conn.commit()
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def insert_heading(self, level: int, title: str, parent_id: Optional[int], document_id: int) -> int:
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"""Insert a heading into the database."""
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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 insert_body(self, content: str, heading_id: int, document_id: int) -> None:
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"""Insert body content into the database with checksumming."""
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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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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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"""
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Initialize the TopicReader.
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Args:
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db_manager (DatabaseManager): An instance of DatabaseManager.
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"""
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self.db_manager = db_manager
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def fetch_headings(self) -> List[Tuple[int, str, int]]:
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"""
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Fetch all non-deleted headings from the database.
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"""
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self.db_manager.cursor.execute('SELECT id, title, level FROM headings WHERE isDeleted = 0 ORDER BY level, id')
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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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"""
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Fetch the topic chain (hierarchy of parent topics) for a given heading.
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Returns:
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List[Tuple[int, str, int]]: List of (id, title, level) tuples representing the topic chain.
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"""
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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('SELECT id, title, level, parent_id FROM headings WHERE id = ?', (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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"""
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List all available headings in a hierarchical structure.
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Returns:
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str: A formatted string containing all headings.
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"""
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headings = self.fetch_headings()
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result = "Available headings:\n"
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for _, title, level in headings:
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indent = " " * (level - 1)
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result += f"{indent}- {title}\n"
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return result.strip()
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def fetch_body_and_subtopics(self, heading_id: int, include_subtopics: bool = True) -> str:
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"""
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Fetch body content and subtopics for a given heading.
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Args:
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heading_id (int): ID of the heading to fetch.
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include_subtopics (bool): Whether to include subtopics in the result.
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Returns:
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str: Formatted string containing the heading content and subtopics.
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"""
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# Fetch the current heading and body content
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self.db_manager.cursor.execute('SELECT level, title FROM headings WHERE id = ?', (heading_id,))
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level, title = self.db_manager.cursor.fetchone()
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# Fetch the content for this heading (the days in the calendar)
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self.db_manager.cursor.execute('SELECT content FROM body WHERE heading_id = ?', (heading_id,))
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rows = self.db_manager.cursor.fetchall()
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body_content = '\n'.join([row[0] for row in rows])
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# Write the heading once and then its body content
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result = f"{'#' * level} {title}\n{body_content.strip()}\n"
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if include_subtopics:
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# Fetch all subtopics (e.g., days) that are children of the current heading
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subtopics = self._fetch_subtopics(heading_id, level)
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for subtopic_id, subtopic_level, subtopic_title in subtopics:
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# Recursively fetch subtopic content
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subtopic_content = self.fetch_body_and_subtopics(subtopic_id, include_subtopics=True)
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result += subtopic_content
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return result.strip() # Strip extra newlines
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def _fetch_subtopics(self, heading_id: int, parent_level: int) -> List[Tuple[int, int, str]]:
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"""
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Fetch all subtopics that are children of the given heading.
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Args:
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heading_id (int): The parent heading ID.
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parent_level (int): The level of the parent heading.
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Returns:
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List of tuples containing the subtopic's ID, level, and title.
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"""
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self.db_manager.cursor.execute('''
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SELECT id, level, title
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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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return self.db_manager.cursor.fetchall()
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def get_topic_content(self, input_title: str) -> Optional[str]:
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"""
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Get the content of a topic based on the input title, including its topic chain and subtopics.
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Returns:
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str or None: Formatted string containing the topic chain, content, and subtopics, or None if not found.
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"""
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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 = ""
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for id, title, level in topic_chain:
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if id == heading_id:
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# Fetch the full content for the selected topic and its subtopics
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result += self.fetch_body_and_subtopics(id, include_subtopics=True)
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else:
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# Include only the heading chain without duplicating content
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result += f"{'#' * level} {title}\n\n"
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return result.strip() # Ensure there are no trailing newlines
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print(f"No topic found matching '{input_title}'.")
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return None
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def find_closest_heading(self, input_title: str) -> Optional[int]:
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"""
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Find the closest matching heading to the input title using fuzzy matching.
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Returns:
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int or None: ID of the closest matching heading, or None if no match found.
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"""
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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, level 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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||||||
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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()
|
||||||
|
|
||||||
|
for month in range(1, 13):
|
||||||
|
month_name = datetime(year, month, 1).strftime('%B')
|
||||||
|
calendar_markdown += f"## {month:02d} / {month_name}\n\n"
|
||||||
|
|
||||||
|
# Calculate the number of days in the month
|
||||||
|
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
|
||||||
|
|
||||||
|
# Generate calendar entries for each day
|
||||||
|
for day in range(1, num_days + 1):
|
||||||
|
day_date = datetime(year, month, day).date()
|
||||||
|
day_name = day_date.strftime('%a')
|
||||||
|
|
||||||
|
# Check if this is the current day and make it bold if so
|
||||||
|
if str(day_date) == str(current_date):
|
||||||
|
calendar_markdown += f"**{day:02d} / {day_name}**\n"
|
||||||
|
else:
|
||||||
|
calendar_markdown += f"{day:02d} / {day_name}\n"
|
||||||
|
|
||||||
|
calendar_markdown += "\n" # Add a newline after each month
|
||||||
|
|
||||||
|
return calendar_markdown
|
||||||
|
|
||||||
|
def bootstrap_calendar(year: int, db_manager: DatabaseManager, markdown_file: str):
|
||||||
|
"""Generate and store a full year's markdown calendar in the database."""
|
||||||
|
calendar_content = generate_calendar(year)
|
||||||
|
|
||||||
|
# Write the calendar to the specified markdown file
|
||||||
|
with open(markdown_file, 'w', encoding='utf-8') as f:
|
||||||
|
f.write(calendar_content)
|
||||||
|
|
||||||
|
# Now use the DocumentManager and MarkdownProcessor to read this file into the database
|
||||||
|
document_manager = DocumentManager(db_manager)
|
||||||
|
document_id = document_manager.create_document(os.path.basename(markdown_file), markdown_file)
|
||||||
|
markdown_processor = MarkdownProcessor(db_manager)
|
||||||
|
markdown_processor.process_markdown(markdown_file, document_id)
|
||||||
|
print(f"Calendar for year {year} has been generated and stored in the database.")
|
||||||
|
|
||||||
|
def main():
|
||||||
|
"""
|
||||||
|
This script processes a markdown file, updates an SQLite database,
|
||||||
|
and optionally selects a topic based on user input.
|
||||||
|
|
||||||
|
Initializes managers for database and markdown handling. Updates documents based on
|
||||||
|
MD5 hash changes, and if a topic is provided, retrieves and writes its content
|
||||||
|
to the markdown file.
|
||||||
|
|
||||||
|
Args:
|
||||||
|
-m, --markdown: Path to markdown file (default: 'calendar.md').
|
||||||
|
-d, --database: Path to SQLite database file (default: 'markdown.db').
|
||||||
|
topic_title: Optional topic for content selection (fuzzy matching enabled).
|
||||||
|
--bootstrap: If provided, generates markdown calendar for the current year and loads it to the database.
|
||||||
|
--ls: If provided, lists all available headings.
|
||||||
|
"""
|
||||||
|
# Set up command-line argument parsing
|
||||||
|
parser = argparse.ArgumentParser(description='Process markdown file and optionally select a topic.')
|
||||||
|
parser.add_argument('-m', '--markdown', type=str, default='calendar.md', help='Input/output markdown file (default: calendar.md)')
|
||||||
|
parser.add_argument('-d', '--database', type=str, default='markdown.db', help='SQLite database file (default: markdown.db)')
|
||||||
|
parser.add_argument('topic_title', nargs='?', type=str, help='Topic title to select (fuzzy matching enabled)')
|
||||||
|
parser.add_argument('--bootstrap', action='store_true', help='Generate markdown calendar for the current year and load it to the database.')
|
||||||
|
parser.add_argument('--ls', action='store_true', help='List all available headings.')
|
||||||
|
args = parser.parse_args()
|
||||||
|
|
||||||
|
# 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:
|
||||||
|
bootstrap_calendar(datetime.now().year, db_manager, markdown_file)
|
||||||
|
db_manager.close()
|
||||||
|
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)
|
||||||
|
print(f"Selected topic and subtopics written to {markdown_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.")
|
||||||
|
|
||||||
|
# Close the database connection
|
||||||
|
db_manager.close()
|
||||||
|
|
||||||
|
if __name__ == '__main__':
|
||||||
|
main()
|
||||||
Reference in New Issue
Block a user