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2026-07-13 12:58:18 +08:00

227 lines
8.5 KiB
Python

"""Consolidated frontend tool stubs (5 tools, down from 14).
These tools are registered at agent creation time so the model can call them
via function calling. The AG-UI adapter streams ToolCall events, which the
CopilotKit frontend matches to useFrontendTool renderers by name.
Rendering tools return a simple confirmation string.
HITL tools use copilotkit_interrupt() to pause the graph for user approval.
"""
from typing import Optional
from langchain_core.tools import tool
from copilotkit.langgraph import copilotkit_interrupt
# ---------------------------------------------------------------------------
# 1. render_chat_visual — inline visuals in the chat
# ---------------------------------------------------------------------------
@tool
def render_chat_visual(
type: str,
title: str,
data: list,
series: list,
totalCash: Optional[float] = None,
totalLiabilities: Optional[float] = None,
netPosition: Optional[float] = None,
accounts: Optional[list] = None,
chartType: Optional[str] = None,
) -> str:
"""Render a visual component inline in the chat.
Args:
type: Visual type — 'chart' for an interactive chart, 'cash_position' for a cash summary card.
title: Title displayed on the visual.
data: Data points. For charts: each has label (str), value (number), optional value2 (number).
For cash_position: ignored (use accounts instead).
series: Series config for charts. Each has key ('value' or 'value2'), color (hex), label.
For cash_position: ignored.
totalCash: (cash_position only) Total cash and cash equivalents.
totalLiabilities: (cash_position only) Total liabilities.
netPosition: (cash_position only) Net position (totalCash - totalLiabilities).
accounts: (cash_position only) Cash and asset accounts. Each has name (str) and balance (number).
chartType: (chart only) Chart subtype — 'area' for trends, 'bar' for comparisons, 'line' for trajectories. Default: 'area'.
"""
if type == "cash_position":
return f"Cash position card rendered. Net: ${netPosition or 0:,.0f}"
return f"Chart '{title}' rendered."
# ---------------------------------------------------------------------------
# 2. navigate_and_filter — SPA navigation
# ---------------------------------------------------------------------------
@tool
def navigate_and_filter(page: str, filter: Optional[str] = None) -> str:
"""Navigate to an ERP page and optionally apply a filter.
Args:
page: Page to navigate to — dashboard, invoices, accounts, inventory, or hr.
filter: Optional filter. Invoices: paid|pending|overdue|draft. Inventory: in-stock|low-stock|out-of-stock.
"""
msg = f"Navigated to {page}"
if filter:
msg += f" with filter '{filter}'"
return msg
# ---------------------------------------------------------------------------
# 3. request_approval — human-in-the-loop
# ---------------------------------------------------------------------------
@tool
def request_approval(
type: str,
invoices: Optional[list] = None,
totalAmount: Optional[float] = None,
action: Optional[str] = None,
items: Optional[list] = None,
estimatedTotal: Optional[float] = None,
supplier: Optional[str] = None,
) -> str:
"""Request human approval for a financial action. MANDATORY before processing payments or reorders.
Args:
type: Approval type — 'invoice_payment' or 'inventory_reorder'.
invoices: (invoice_payment only) Invoices to approve. Each has number, client, amount, dueDate.
totalAmount: (invoice_payment only) Sum of all invoice amounts.
action: (invoice_payment only) Description, e.g. 'Process payment for 3 overdue invoices'.
items: (inventory_reorder only) Items to reorder. Each has sku, name, currentQty, reorderQty, unitCost.
estimatedTotal: (inventory_reorder only) Total estimated cost of the purchase order.
supplier: (inventory_reorder only) Supplier name, if known.
"""
if type == "invoice_payment":
answer, _ = copilotkit_interrupt(
action="request_approval",
args={
"type": "invoice_payment",
"invoices": invoices,
"totalAmount": totalAmount,
"action": action,
},
)
else:
answer, _ = copilotkit_interrupt(
action="request_approval",
args={
"type": "inventory_reorder",
"items": items,
"estimatedTotal": estimatedTotal,
"supplier": supplier or "",
},
)
return answer
# ---------------------------------------------------------------------------
# 4. update_dashboard — add/update dashboard widgets (batch)
# ---------------------------------------------------------------------------
@tool
def update_dashboard(widgets: list) -> str:
"""Add or update one or more dashboard widgets in a single call.
Args:
widgets: Array of widget configs. Each widget has:
- type (str): Widget type — 'kpi_cards', 'revenue_chart', 'expense_breakdown',
'transactions', 'invoices', or 'custom_chart'.
- colSpan (int, optional): Grid column span 1-4. Defaults vary by type.
- config (dict, optional): Type-specific configuration:
* kpi_cards: { metrics?: string[] } — KPI labels to show.
* revenue_chart: { showProfit?: bool, showExpenses?: bool }
* expense_breakdown: { categories?: string[] }
* transactions: { limit?: int }
* invoices: { statuses?: ['pending', 'overdue'] }
* custom_chart: { title: str, subtitle?: str, chartType: 'area'|'bar'|'line',
data: [{label, value, value2?, value3?}], series: [{key, color, label}],
formatValues?: 'currency'|'number'|'percent' }
"""
types = [w.get("type", "widget") for w in widgets]
return f"Dashboard updated: {', '.join(types)}"
# ---------------------------------------------------------------------------
# 5. manage_dashboard — remove, reorder, or reset
# ---------------------------------------------------------------------------
@tool
def manage_dashboard(
action: str, widgetId: Optional[str] = None, updates: Optional[list] = None
) -> str:
"""Manage the dashboard layout.
Args:
action: Action to perform — 'remove' (delete a widget), 'reorder' (resize/reorder widgets),
or 'reset' (restore default layout).
widgetId: (remove only) ID of the widget to remove.
updates: (reorder only) Array of updates. Each has widgetId (str), optional colSpan (1-4), optional order (int).
"""
if action == "reset":
return "Dashboard reset to defaults."
if action == "remove":
return f"Widget '{widgetId}' removed."
if action == "reorder" and updates:
return f"Updated {len(updates)} widget(s)."
return f"Dashboard action '{action}' completed."
# ---------------------------------------------------------------------------
# 6. save_dashboard — persist current dashboard layout
# ---------------------------------------------------------------------------
@tool
def save_dashboard(name: str) -> str:
"""Save the current dashboard layout with a name for later retrieval.
Args:
name: A descriptive name for this dashboard configuration (e.g. 'Q1 Cash Flow Review').
"""
return f"Dashboard saved as '{name}'."
# ---------------------------------------------------------------------------
# 7. load_dashboard — restore a previously saved dashboard
# ---------------------------------------------------------------------------
@tool
def load_dashboard(name: str) -> str:
"""Load a previously saved dashboard by name (fuzzy match).
Args:
name: Name of the saved dashboard to load.
"""
return f"Dashboard '{name}' loaded."
# ---------------------------------------------------------------------------
# Export
# ---------------------------------------------------------------------------
# Tools whose execution is intercepted by CopilotKitMiddleware and forwarded to
# the frontend for rendering via useFrontendTool.
ui_tools = [
render_chat_visual,
navigate_and_filter,
update_dashboard,
manage_dashboard,
save_dashboard,
load_dashboard,
]
# Human-in-the-loop tools — execute on the backend via copilotkit_interrupt().
hitl_tools = [
request_approval,
]
# All frontend tools
frontend_tools = [*ui_tools, *hitl_tools]