refactor(routes): move research domain into routes/research/ subpackage

Move the research route domain into the canonical routes/research/ subpackage while preserving the legacy routes.research_routes import path through a sys.modules compatibility shim.

The moved canonical module is behavior-preserving, app wiring now imports the canonical route setup function, source-introspection tests point at the new canonical path, and shim regression coverage pins legacy/canonical same-object behavior plus string-targeted monkeypatch reach-through.

Refs #4082.
Refs #4071.
This commit is contained in:
Tal.Yuan
2026-06-28 21:34:11 +08:00
committed by GitHub
parent e018c7cf6c
commit bb2148db73
7 changed files with 743 additions and 677 deletions
+13 -674
View File
@@ -1,678 +1,17 @@
"""Research background task routes — /api/research/*."""
"""Backward-compat shim — canonical location is routes/research/research_routes.py.
import asyncio
import json
import logging
import re
import uuid
from datetime import datetime
from pathlib import Path
from typing import Optional
This module is replaced in ``sys.modules`` by the canonical module object so
that ``import routes.research_routes``, ``from routes.research_routes import X``,
``importlib.import_module("routes.research_routes")``, and
``monkeypatch.setattr("routes.research_routes.ATTR", ...)`` (string-targeted
patch used by ``test_research_owner_scope_routes.py``) all operate on the
*same* object the application actually uses. Keeps existing import paths
working after slice 2b (#4082/#4071). Source-introspection tests read the
canonical file by path.
"""
from fastapi import APIRouter, HTTPException, Query, Request
from fastapi.responses import HTMLResponse, StreamingResponse
from pydantic import BaseModel, Field
from core.middleware import INTERNAL_TOOL_USER
from src.endpoint_resolver import resolve_endpoint
from src.auth_helpers import _auth_disabled, get_current_user
from core.auth import RESERVED_USERNAMES
from src.constants import DEEP_RESEARCH_DIR
import sys as _sys
_SESSION_ID_RE = re.compile(r"^[a-zA-Z0-9-]{1,128}$")
from routes.research import research_routes as _canonical # noqa: F401
logger = logging.getLogger(__name__)
# Model-name substrings that are NOT chat/generation models — research must
# never pick these as its model. An OpenAI-style endpoint often lists
# `text-embedding-ada-002` etc. first in its model list, which is why research
# was failing with "Cannot reach model 'text-embedding-ada-002'".
_NON_CHAT_MODEL = (
"text-embedding", "embedding", "tts-", "whisper", "dall-e",
"moderation", "rerank", "reranker", "clip", "stable-diffusion",
)
def _first_chat_model(models) -> str:
"""First model that isn't an embedding/tts/etc. — falls back to models[0]."""
for m in (models or []):
if not any(p in str(m).lower() for p in _NON_CHAT_MODEL):
return m
return (models[0] if models else "")
def _resolve_research_endpoint(sess, owner: Optional[str] = None) -> tuple:
"""Return (endpoint_url, model, headers) for Deep Research, checking admin overrides."""
owner = owner or getattr(sess, "owner", None) or None
url, model, headers = resolve_endpoint(
"research",
fallback_url=sess.endpoint_url,
fallback_model=sess.model,
fallback_headers=sess.headers,
owner=owner,
)
return url, model, headers
def _owned_enabled_endpoint(db, owner, endpoint_id=None):
"""An enabled ModelEndpoint VISIBLE to `owner` (their own rows + legacy
null-owner "shared" rows), optionally narrowed to a specific endpoint_id;
None if nothing visible matches.
Owner-scoped on purpose. ModelEndpoint is per-user (core/database.py: non-null
owner = private, "the model picker only shows the endpoint to that user") and
holds a decrypted `api_key`. /api/research/start feeds the resolved row's
api_key + base_url into research_handler.start_research(llm_endpoint=,
llm_headers=), so an UNSCOPED lookup — by the caller-supplied endpoint_id, or
via the bare first-enabled fallback — would let a research-privileged user
spend ANOTHER user's API key/quota and reach whatever internal base_url they
configured. Mirrors webhook_routes._first_enabled_endpoint and
session_routes._owned_endpoint. A null/empty owner is a no-op (single-user /
legacy mode).
"""
from src.database import ModelEndpoint
from src.auth_helpers import owner_filter
q = db.query(ModelEndpoint).filter(ModelEndpoint.is_enabled == True) # noqa: E712
if endpoint_id:
q = q.filter(ModelEndpoint.id == endpoint_id)
return owner_filter(q, ModelEndpoint, owner).first()
def _resolve_endpoint_runtime(ep, owner=None, model: Optional[str] = None):
"""Resolve a ModelEndpoint row into (chat_url, model, headers).
Mirrors endpoint_resolver.resolve_endpoint's provider-auth handling for
panel-selected research endpoints. ChatGPT Subscription endpoints keep
OAuth tokens in ProviderAuthSession, so ep.api_key is intentionally empty.
"""
from src.endpoint_resolver import (
build_chat_url,
build_headers,
resolve_endpoint_runtime as resolve_model_endpoint_runtime,
)
try:
base, api_key = resolve_model_endpoint_runtime(ep, owner=owner)
except Exception as e:
logger.warning("Could not resolve endpoint credentials for research: %s", e)
return None
ep_model = (model or "").strip()
if not ep_model:
try:
models = json.loads(ep.cached_models) if ep.cached_models else []
if models:
ep_model = _first_chat_model(models)
except Exception:
pass
if not ep_model:
return None
return build_chat_url(base), ep_model, build_headers(api_key, base)
def setup_research_routes(research_handler, session_manager=None) -> APIRouter:
router = APIRouter(tags=["research"])
def _require_user(request: Request) -> str:
"""All research endpoints require an authenticated user. Research
data isn't owner-scoped in the on-disk JSON yet, so we at least
block anonymous access. Multi-tenant deploys should additionally
verify the session belongs to this user."""
user = get_current_user(request)
if not user:
if _auth_disabled():
return ""
raise HTTPException(401, "Not authenticated")
return user
def _validate_session_id(session_id: str) -> None:
if not _SESSION_ID_RE.fullmatch(session_id):
raise HTTPException(400, "Invalid session ID format")
def _owns_in_memory(session_id: str, user: str) -> bool:
"""Ownership check for an in-flight (in-memory) research task.
Falls back to the on-disk JSON if the task has already finished."""
entry = research_handler._active_tasks.get(session_id)
if entry is not None:
return entry.get("owner", "") == user
# Task no longer in memory — check the persisted JSON.
path = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if not path.exists():
return False
try:
return json.loads(path.read_text(encoding="utf-8")).get("owner") == user
except Exception:
return False
@router.get("/api/research/active")
async def research_active(request: Request):
"""List all currently active (running) research tasks."""
user = _require_user(request)
active = []
for sid, entry in research_handler._active_tasks.items():
# SECURITY: only show this user's running tasks.
if entry.get("owner", "") != user:
continue
if entry.get("status") == "running":
active.append({
"session_id": sid,
"query": entry.get("query", ""),
"status": "running",
"progress": entry.get("progress", {}),
"started_at": entry.get("started_at", 0),
})
return {"active": active}
@router.get("/api/research/status/{session_id}")
async def research_status(session_id: str, request: Request):
user = _require_user(request)
_validate_session_id(session_id)
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research found for this session")
status = research_handler.get_status(session_id)
if status is None:
raise HTTPException(404, "No research found for this session")
return status
@router.post("/api/research/cancel/{session_id}")
async def research_cancel(session_id: str, request: Request):
user = _require_user(request)
_validate_session_id(session_id)
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research found for this session")
cancelled = research_handler.cancel_research(session_id)
return {"cancelled": cancelled}
@router.post("/api/research/result/{session_id}")
async def research_result(session_id: str, request: Request):
user = _require_user(request)
_validate_session_id(session_id)
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research result available")
result = research_handler.get_result(session_id)
if result is None:
raise HTTPException(404, "No research result available")
sources = research_handler.get_sources(session_id) or []
raw_findings = research_handler.get_raw_findings(session_id) or []
research_handler.clear_result(session_id)
return {"result": result, "sources": sources, "raw_findings": raw_findings}
def _assert_owns_research(session_id: str, user: str) -> None:
"""404-not-403 ownership gate for a research session's on-disk JSON.
Use BEFORE returning any data or mutating the file."""
path = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if not path.exists():
raise HTTPException(404, "Research not found")
try:
owner = json.loads(path.read_text(encoding="utf-8")).get("owner")
except Exception:
raise HTTPException(404, "Research not found")
if owner != user:
raise HTTPException(404, "Research not found")
@router.get("/api/research/report/{session_id}")
async def research_report(session_id: str, request: Request):
"""Serve the visual HTML report for a completed research session."""
user = _require_user(request)
_validate_session_id(session_id)
_assert_owns_research(session_id, user)
logger.info(f"Visual report requested for session {session_id}")
try:
html_content = research_handler.get_report_html(session_id)
except Exception as e:
logger.error(f"Visual report generation error: {e}", exc_info=True)
raise HTTPException(500, f"Report generation failed: {e}")
if html_content is None:
logger.warning(f"No report data found for session {session_id}")
raise HTTPException(404, "No visual report available for this session")
return HTMLResponse(content=html_content)
class HideImageRequest(BaseModel):
url: str
@router.post("/api/research/{session_id}/hide-image")
async def research_hide_image(session_id: str, body: HideImageRequest, request: Request):
"""Mark an image URL as hidden for this research's visual report.
Persisted to the research JSON so subsequent /report renders skip it."""
user = _require_user(request)
_validate_session_id(session_id)
_assert_owns_research(session_id, user)
ok = research_handler.hide_image(session_id, body.url)
if not ok:
raise HTTPException(404, "Research not found")
return {"ok": True}
@router.post("/api/research/{session_id}/unhide-images")
async def research_unhide_images(session_id: str, request: Request):
"""Clear the hidden-images list for a research session."""
user = _require_user(request)
_validate_session_id(session_id)
_assert_owns_research(session_id, user)
ok = research_handler.unhide_all_images(session_id)
if not ok:
raise HTTPException(404, "Research not found")
return {"ok": True}
@router.get("/api/research/library")
async def research_library(
request: Request,
search: Optional[str] = Query(None),
sort: str = Query("recent"),
limit: int = Query(50),
archived: bool = Query(False),
):
user = _require_user(request)
"""List all completed research for the Library panel."""
data_dir = Path(DEEP_RESEARCH_DIR)
items = []
for p in data_dir.glob("*.json"):
try:
d = json.loads(p.read_text(encoding="utf-8"))
# SECURITY: only show research belonging to this user. Legacy
# JSONs without an `owner` field are hidden — auth was the only
# gate before, so every user saw every other user's reports.
if d.get("owner") != user:
continue
# Archived view shows ONLY archived reports; default hides them.
if bool(d.get("archived")) != archived:
continue
query = d.get("query", "")
if search and search.lower() not in query.lower():
continue
sources = d.get("sources", [])
items.append({
"id": p.stem,
"query": query,
"category": d.get("category") or "",
"source_count": len(sources),
"status": d.get("status", "done"),
"duration": d.get("stats", {}).get("Duration", ""),
"rounds": d.get("stats", {}).get("Rounds", ""),
"started_at": d.get("started_at", 0),
"completed_at": d.get("completed_at", 0),
"archived": bool(d.get("archived")),
})
except Exception:
continue
# Sort
if sort == "recent":
items.sort(key=lambda x: x["completed_at"] or 0, reverse=True)
elif sort == "oldest":
items.sort(key=lambda x: x["completed_at"] or 0)
elif sort == "most-messages":
items.sort(key=lambda x: x["source_count"], reverse=True)
elif sort == "alpha":
items.sort(key=lambda x: x["query"].lower())
return {"research": items[:limit], "total": len(items)}
@router.get("/api/research/detail/{session_id}")
async def research_detail(session_id: str, request: Request):
"""Return the full JSON for a single research result — sources,
summary, stats — used by the Library preview panel."""
user = _require_user(request)
_validate_session_id(session_id)
path = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if not path.exists():
raise HTTPException(404, "Research not found")
try:
data = json.loads(path.read_text(encoding="utf-8"))
except Exception as e:
raise HTTPException(500, f"Failed to read research: {e}")
# SECURITY: 404 (not 403) so we don't leak that the report exists.
if data.get("owner") != user:
raise HTTPException(404, "Research not found")
return data
@router.post("/api/research/{session_id}/archive")
async def research_archive(session_id: str, request: Request, archived: bool = Query(True)):
"""Soft-archive / restore a research report (sets `archived` in its JSON)."""
user = _require_user(request)
_validate_session_id(session_id)
path = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if not path.exists():
raise HTTPException(404, "Research not found")
try:
data = json.loads(path.read_text(encoding="utf-8"))
if data.get("owner") != user:
raise HTTPException(404, "Research not found")
data["archived"] = bool(archived)
path.write_text(json.dumps(data), encoding="utf-8")
except HTTPException:
raise
except Exception as e:
raise HTTPException(500, f"Failed to update research: {e}")
return {"ok": True, "id": session_id, "archived": bool(archived)}
@router.delete("/api/research/{session_id}")
async def research_delete(session_id: str, request: Request):
"""Delete a research result from disk."""
user = _require_user(request)
_validate_session_id(session_id)
data_dir = Path(DEEP_RESEARCH_DIR)
json_path = data_dir / f"{session_id}.json"
deleted = False
if json_path.exists():
# SECURITY: verify ownership before letting the caller delete it.
try:
data = json.loads(json_path.read_text(encoding="utf-8"))
if data.get("owner") != user:
raise HTTPException(404, "Research not found")
except HTTPException:
raise
except Exception:
raise HTTPException(404, "Research not found")
json_path.unlink()
deleted = True
return {"deleted": deleted}
# ------------------------------------------------------------------
# Panel endpoints — launch research without a chat session
# ------------------------------------------------------------------
class ResearchStartRequest(BaseModel):
query: str
# max_rounds=0 means "Auto" — let the AI decide when to stop, capped at 20.
max_rounds: int = Field(default=0, ge=0, le=20)
search_provider: Optional[str] = None
endpoint_id: Optional[str] = None
model: Optional[str] = None
max_time: int = Field(default=300, ge=60, le=1800)
extraction_timeout: Optional[int] = Field(default=None, ge=15, le=3600)
extraction_concurrency: Optional[int] = Field(default=None, ge=1, le=12)
category: Optional[str] = None
@router.post("/api/research/start")
async def research_start(body: ResearchStartRequest, request: Request):
"""Launch a research job from the dedicated panel."""
from src.auth_helpers import require_privilege
user = require_privilege(request, "can_use_research")
if user == INTERNAL_TOOL_USER:
tool_owner = (request.headers.get("X-Odysseus-Owner") or "").strip()
if tool_owner and tool_owner not in RESERVED_USERNAMES:
auth_mgr = getattr(request.app.state, "auth_manager", None)
if auth_mgr is not None and getattr(auth_mgr, "is_configured", False):
try:
privs = auth_mgr.get_privileges(tool_owner) or {}
if not privs.get("can_use_research", True):
raise HTTPException(403, f"Your account is not allowed to can use research.")
except HTTPException:
raise
except Exception:
pass
user = tool_owner
session_id = f"rp-{uuid.uuid4().hex[:12]}"
if body.endpoint_id:
from src.database import SessionLocal
db = SessionLocal()
try:
# Owner-scoped: never resolve another user's private endpoint
# (and its decrypted api_key / internal base_url). A scoped miss
# reads as 404 so the endpoint's existence isn't revealed.
ep = _owned_enabled_endpoint(db, user, body.endpoint_id)
if not ep:
raise HTTPException(404, "Endpoint not found or disabled")
resolved = _resolve_endpoint_runtime(ep, owner=user, model=body.model)
if not resolved:
raise HTTPException(400, "Endpoint is not configured with a usable model.")
ep_url, ep_model, ep_headers = resolved
finally:
db.close()
else:
ep_url, ep_model, ep_headers = resolve_endpoint("research", owner=user)
if not ep_url:
ep_url, ep_model, ep_headers = resolve_endpoint("utility", owner=user)
# When neither research nor utility is configured, use the user's
# configured DEFAULT model (default_endpoint_id/default_model) rather
# than arbitrarily grabbing the first enabled endpoint's first model
# (which surfaced gpt-3.5). "Default" should mean the default model.
if not ep_url:
ep_url, ep_model, ep_headers = resolve_endpoint("default", owner=user)
if not ep_url:
ep_url, ep_model, ep_headers = resolve_endpoint("chat", owner=user)
if not ep_url:
from src.database import SessionLocal
db = SessionLocal()
try:
# Owner-scoped first-enabled fallback: the caller's own rows
# + legacy null-owner shared rows only — never borrow another
# user's private endpoint/api_key. Same fix as the
# /api/v1/chat fallback (webhook_routes._first_enabled_endpoint).
ep = _owned_enabled_endpoint(db, user)
if ep:
resolved = _resolve_endpoint_runtime(ep, owner=user)
if resolved:
ep_url, ep_model, ep_headers = resolved
finally:
db.close()
if not ep_url:
raise HTTPException(400, "No endpoints configured. Add one in Settings first.")
if body.model:
ep_model = body.model
# max_rounds=0 → "Auto", let AI decide; pass 20 as the safety cap.
effective_max_rounds = body.max_rounds if body.max_rounds > 0 else 20
research_handler.start_research(
session_id=session_id,
query=body.query,
llm_endpoint=ep_url,
llm_model=ep_model,
max_time=body.max_time,
llm_headers=ep_headers,
max_rounds=effective_max_rounds,
search_provider=body.search_provider or None,
category=body.category or None,
extraction_timeout=body.extraction_timeout,
extraction_concurrency=body.extraction_concurrency,
owner=user,
)
return {"session_id": session_id, "status": "running", "query": body.query}
@router.get("/api/research/stream/{session_id}")
async def research_stream(session_id: str, request: Request):
"""SSE stream of research progress events."""
user = _require_user(request)
_validate_session_id(session_id)
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research found for this session")
async def _generate():
last_progress = None
while True:
status = research_handler.get_status(session_id)
if status is None:
yield f"data: {json.dumps({'status': 'not_found'})}\n\n"
return
st = status.get("status", "")
progress = status.get("progress", {})
if progress != last_progress:
last_progress = progress
yield f"data: {json.dumps({**progress, 'status': st})}\n\n"
if st != "running":
final = {'status': st, 'final': True}
task = research_handler._active_tasks.get(session_id, {})
if st == "error" and task.get("result"):
final['error'] = str(task["result"])[:500]
yield f"data: {json.dumps(final)}\n\n"
return
await asyncio.sleep(1.5)
return StreamingResponse(
_generate(),
media_type="text/event-stream",
headers={"Cache-Control": "no-cache", "X-Accel-Buffering": "no"},
)
@router.post("/api/research/result-peek/{session_id}")
async def research_result_peek(session_id: str, request: Request):
"""Get research result without clearing it (for panel use)."""
user = _require_user(request)
_validate_session_id(session_id)
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research found for this session")
result = research_handler.get_result(session_id)
if result is None:
p = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if p.exists():
d = json.loads(p.read_text(encoding="utf-8"))
return {
"result": d.get("result", ""),
"sources": d.get("sources", []),
"raw_findings": d.get("raw_findings", []),
"category": d.get("category") or "",
}
raise HTTPException(404, "No research result available")
sources = research_handler.get_sources(session_id) or []
raw_findings = research_handler.get_raw_findings(session_id) or []
return {"result": result, "sources": sources, "raw_findings": raw_findings, "category": ""}
@router.post("/api/research/spinoff/{session_id}")
async def research_spinoff(session_id: str, request: Request):
"""Create a new chat session pre-seeded with this research as context.
Reads the persisted research result + sources for `session_id`, creates
a fresh session (inheriting endpoint/model/headers from the source
session if available, otherwise from the resolved chat endpoint), and
injects a single system message containing the report and sources so
the user can ask follow-up questions in a clean conversation.
"""
user = _require_user(request)
_validate_session_id(session_id)
# SECURITY: gate on ownership before reading the persisted research —
# otherwise any authenticated user could spin off (and thereby read)
# another user's report by guessing its session ID. Mirrors every other
# endpoint in this file (see result_peek above).
if not _owns_in_memory(session_id, user):
raise HTTPException(404, "No research found for this session")
if session_manager is None:
raise HTTPException(500, "session_manager not configured")
# Load research data — prefer in-memory result, fall back to disk
result = research_handler.get_result(session_id)
sources = research_handler.get_sources(session_id) or []
query = ""
path = Path(DEEP_RESEARCH_DIR) / f"{session_id}.json"
if path.exists():
try:
disk = json.loads(path.read_text(encoding="utf-8"))
if not result:
result = disk.get("result")
if not sources:
sources = disk.get("sources", []) or []
query = disk.get("query", "") or ""
except Exception as e:
logger.warning(f"Could not read research JSON for spinoff: {e}")
if not result:
raise HTTPException(404, "No research result available for this session")
# Inherit endpoint/model/headers from the source session when possible.
# For panel-launched research (rp-* IDs), there is no chat session, so
# fall back through the same chain as /api/research/start: research →
# utility → first enabled endpoint in the DB.
ep_url, ep_model, ep_headers = "", "", {}
try:
src_sess = session_manager.get_session(session_id)
ep_url = src_sess.endpoint_url or ""
ep_model = src_sess.model or ""
ep_headers = dict(src_sess.headers or {})
except KeyError:
pass
def _merge(r_url, r_model, r_headers):
nonlocal ep_url, ep_model, ep_headers
if not ep_url and r_url:
ep_url = r_url
if not ep_model and r_model:
ep_model = r_model
if not ep_headers and r_headers:
ep_headers = dict(r_headers)
if not ep_url or not ep_model:
_merge(*resolve_endpoint("chat", owner=user))
if not ep_url or not ep_model:
_merge(*resolve_endpoint("research", owner=user))
if not ep_url or not ep_model:
_merge(*resolve_endpoint("utility", owner=user))
if not ep_url or not ep_model:
# Last resort: this user's enabled endpoint, plus legacy shared rows.
from src.database import SessionLocal
from src.endpoint_resolver import normalize_base, build_chat_url, build_headers
db = SessionLocal()
try:
ep = _owned_enabled_endpoint(db, user)
if ep:
base = normalize_base(ep.base_url)
fallback_url = build_chat_url(base)
fallback_headers = build_headers(ep.api_key, base)
fallback_model = ""
if ep.cached_models:
try:
models = json.loads(ep.cached_models)
if models:
fallback_model = _first_chat_model(models)
except Exception:
pass
_merge(fallback_url, fallback_model, fallback_headers)
finally:
db.close()
if not ep_url or not ep_model:
raise HTTPException(400, "No endpoint configured — add one in Settings first")
# Create new session
new_sid = str(uuid.uuid4())
title_query = (query or "research").strip()
if len(title_query) > 60:
title_query = title_query[:57] + ""
new_name = f"Follow-up: {title_query}"
new_sess = session_manager.create_session(
session_id=new_sid,
name=new_name,
endpoint_url=ep_url,
model=ep_model,
rag=False,
owner=user,
)
if ep_headers:
new_sess.headers = ep_headers
session_manager.save_sessions()
try:
from src.event_bus import fire_event
fire_event("session_created", user)
except Exception:
logger.debug("session_created event dispatch failed", exc_info=True)
# Build the priming system message — report only, no sources injected.
# The user can open the visual report for source details; keeping sources
# out of the chat context saves tokens and avoids the AI fabricating
# citations.
date_str = datetime.utcnow().strftime("%Y-%m-%d")
primer = (
f"[Research context — {date_str}]\n\n"
f"The user previously ran a deep research investigation. Use the "
f"report below as your primary knowledge base when answering "
f"follow-up questions. If the user asks something not covered, "
f"say so plainly rather than guessing.\n\n"
f"=== ORIGINAL QUERY ===\n{query or '(not recorded)'}\n\n"
f"=== REPORT ===\n{result}"
)
from core.models import ChatMessage
new_sess.add_message(ChatMessage(
role="system",
content=primer,
metadata={"research_spinoff_from": session_id},
))
session_manager.save_sessions()
return {
"session_id": new_sid,
"name": new_name,
"source_count": len(sources),
}
return router
_sys.modules[__name__] = _canonical