Files
DocsGPT/application/agents/tools/notes.py
2026-04-15 09:36:51 +01:00

259 lines
9.6 KiB
Python

from typing import Any, Dict, List, Optional
import uuid
from .base import Tool
from application.storage.db.repositories.notes import NotesRepository
from application.storage.db.session import db_readonly, db_session
# Stable synthetic title used in the Postgres ``notes.title`` column.
# The notes tool stores one note per (user_id, tool_id); there is no
# user-facing title. PG requires ``title`` NOT NULL, so we write a stable
# constant alongside the actual note body in ``content``.
_NOTE_TITLE = "note"
class NotesTool(Tool):
"""Notepad
Single note. Supports viewing, overwriting, string replacement.
"""
def __init__(self, tool_config: Optional[Dict[str, Any]] = None, user_id: Optional[str] = None) -> None:
"""Initialize the tool.
Args:
tool_config: Optional tool configuration. Should include:
- tool_id: Unique identifier for this notes tool instance (from user_tools._id)
This ensures each user's tool configuration has isolated notes
user_id: The authenticated user's id (should come from decoded_token["sub"]).
"""
self.user_id: Optional[str] = user_id
# Get tool_id from configuration (passed from user_tools._id in production)
if tool_config and "tool_id" in tool_config:
self.tool_id = tool_config["tool_id"]
elif user_id:
# Fallback for backward compatibility or testing
self.tool_id = f"default_{user_id}"
else:
# Last resort fallback (shouldn't happen in normal use)
self.tool_id = str(uuid.uuid4())
self._last_artifact_id: Optional[str] = None
def _pg_enabled(self) -> bool:
"""Return True only when ``tool_id`` is a real ``user_tools.id`` UUID.
``notes.tool_id`` is a UUID FK to ``user_tools``; repo queries
``CAST(:tool_id AS uuid)``. The sentinel ``default_{uid}``
fallback is neither a UUID nor a ``user_tools`` row, so any DB
operation would crash. Mirror MemoryTool's guard and no-op.
"""
tool_id = getattr(self, "tool_id", None)
if not tool_id or not isinstance(tool_id, str):
return False
if tool_id.startswith("default_"):
return False
from application.storage.db.base_repository import looks_like_uuid
return looks_like_uuid(tool_id)
# -----------------------------
# Action implementations
# -----------------------------
def execute_action(self, action_name: str, **kwargs: Any) -> str:
"""Execute an action by name.
Args:
action_name: One of view, overwrite, str_replace, insert, delete.
**kwargs: Parameters for the action.
Returns:
A human-readable string result.
"""
if not self.user_id:
return "Error: NotesTool requires a valid user_id."
if not self._pg_enabled():
return (
"Error: NotesTool is not configured with a persistent "
"tool_id; note storage is unavailable for this session."
)
self._last_artifact_id = None
if action_name == "view":
return self._get_note()
if action_name == "overwrite":
return self._overwrite_note(kwargs.get("text", ""))
if action_name == "str_replace":
return self._str_replace(kwargs.get("old_str", ""), kwargs.get("new_str", ""))
if action_name == "insert":
return self._insert(kwargs.get("line_number", 1), kwargs.get("text", ""))
if action_name == "delete":
return self._delete_note()
return f"Unknown action: {action_name}"
def get_actions_metadata(self) -> List[Dict[str, Any]]:
"""Return JSON metadata describing supported actions for tool schemas."""
return [
{
"name": "view",
"description": "Retrieve the user's note.",
"parameters": {"type": "object", "properties": {}},
},
{
"name": "overwrite",
"description": "Replace the entire note content (creates if doesn't exist).",
"parameters": {
"type": "object",
"properties": {
"text": {"type": "string", "description": "New note content."}
},
"required": ["text"],
},
},
{
"name": "str_replace",
"description": "Replace occurrences of old_str with new_str in the note.",
"parameters": {
"type": "object",
"properties": {
"old_str": {"type": "string", "description": "String to find."},
"new_str": {"type": "string", "description": "String to replace with."}
},
"required": ["old_str", "new_str"],
},
},
{
"name": "insert",
"description": "Insert text at the specified line number (1-indexed).",
"parameters": {
"type": "object",
"properties": {
"line_number": {"type": "integer", "description": "Line number to insert at (1-indexed)."},
"text": {"type": "string", "description": "Text to insert."}
},
"required": ["line_number", "text"],
},
},
{
"name": "delete",
"description": "Delete the user's note.",
"parameters": {"type": "object", "properties": {}},
},
]
def get_config_requirements(self) -> Dict[str, Any]:
"""Return configuration requirements (none for now)."""
return {}
def get_artifact_id(self, action_name: str, **kwargs: Any) -> Optional[str]:
return self._last_artifact_id
# -----------------------------
# Internal helpers (single-note)
# -----------------------------
def _fetch_note(self) -> Optional[dict]:
"""Read the note row for this (user, tool) from Postgres."""
with db_readonly() as conn:
return NotesRepository(conn).get_for_user_tool(self.user_id, self.tool_id)
def _get_note(self) -> str:
doc = self._fetch_note()
# ``content`` is the PG column; expose as ``note`` to callers via the
# textual return value. Frontends that read the artifact via the
# repo dict get ``content`` (PG-native) plus the artifact id below.
body = (doc or {}).get("content")
if not doc or not body:
return "No note found."
if doc.get("id") is not None:
self._last_artifact_id = str(doc.get("id"))
return str(body)
def _overwrite_note(self, content: str) -> str:
content = (content or "").strip()
if not content:
return "Note content required."
with db_session() as conn:
row = NotesRepository(conn).upsert(
self.user_id, self.tool_id, _NOTE_TITLE, content
)
if row and row.get("id") is not None:
self._last_artifact_id = str(row.get("id"))
return "Note saved."
def _str_replace(self, old_str: str, new_str: str) -> str:
if not old_str:
return "old_str is required."
doc = self._fetch_note()
existing = (doc or {}).get("content")
if not doc or not existing:
return "No note found."
current_note = str(existing)
# Case-insensitive search
if old_str.lower() not in current_note.lower():
return f"String '{old_str}' not found in note."
# Case-insensitive replacement
import re
updated_note = re.sub(re.escape(old_str), new_str, current_note, flags=re.IGNORECASE)
with db_session() as conn:
row = NotesRepository(conn).upsert(
self.user_id, self.tool_id, _NOTE_TITLE, updated_note
)
if row and row.get("id") is not None:
self._last_artifact_id = str(row.get("id"))
return "Note updated."
def _insert(self, line_number: int, text: str) -> str:
if not text:
return "Text is required."
doc = self._fetch_note()
existing = (doc or {}).get("content")
if not doc or not existing:
return "No note found."
current_note = str(existing)
lines = current_note.split("\n")
# Convert to 0-indexed and validate
index = line_number - 1
if index < 0 or index > len(lines):
return f"Invalid line number. Note has {len(lines)} lines."
lines.insert(index, text)
updated_note = "\n".join(lines)
with db_session() as conn:
row = NotesRepository(conn).upsert(
self.user_id, self.tool_id, _NOTE_TITLE, updated_note
)
if row and row.get("id") is not None:
self._last_artifact_id = str(row.get("id"))
return "Text inserted."
def _delete_note(self) -> str:
# Capture the id (for artifact tracking) before deleting.
existing = self._fetch_note()
if not existing:
return "No note found to delete."
with db_session() as conn:
deleted = NotesRepository(conn).delete(self.user_id, self.tool_id)
if not deleted:
return "No note found to delete."
if existing.get("id") is not None:
self._last_artifact_id = str(existing.get("id"))
return "Note deleted."