ragflow/api/apps/restful_apis/agent_api.py

#
#  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#

import asyncio
import base64
import copy
import hashlib
import hmac
import inspect
import ipaddress
import json
import logging
import time
from functools import partial, wraps

import jwt
from quart import Response, jsonify, request

from agent.canvas import Canvas
from agent.component import LLM
from agent.dsl_migration import normalize_chunker_dsl
from api.apps import current_user, login_required
from api.apps.services.canvas_replica_service import CanvasReplicaService
from api.db import CanvasCategory
from api.db.db_models import Task
from api.db.services.api_service import API4ConversationService
from api.db.services.canvas_service import (
    CanvasTemplateService,
    UserCanvasService,
    completion as agent_completion,
    completion_openai,
)
from api.db.services.document_service import DocumentService
from api.db.services.file_service import FileService
from api.db.services.knowledgebase_service import KnowledgebaseService
from api.db.services.pipeline_operation_log_service import PipelineOperationLogService
from api.db.services.task_service import CANVAS_DEBUG_DOC_ID, TaskService, queue_dataflow
from api.db.services.user_service import TenantService, UserService
from api.db.services.user_canvas_version import UserCanvasVersionService
from api.utils.api_utils import (
    add_tenant_id_to_kwargs,
    get_data_error_result,
    get_json_result,
    get_result,
    get_request_json,
    server_error_response,
    validate_request,
)
from common import settings
from common.constants import RetCode
from common.misc_utils import get_uuid, thread_pool_exec
from peewee import MySQLDatabase, PostgresqlDatabase
from rag.flow.pipeline import Pipeline
from rag.nlp import search
from rag.utils.redis_conn import REDIS_CONN


def _require_canvas_access_sync(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        if not UserCanvasService.accessible(kwargs.get('agent_id'), kwargs.get('tenant_id')):
            return get_json_result(data=False, message="Make sure you have permission to access the agent.", code=RetCode.OPERATING_ERROR)
        return func(*args, **kwargs)
    return wrapper


def _require_canvas_access_async(func):
    @wraps(func)
    async def wrapper(*args, **kwargs):
        agent_id = kwargs.get('agent_id')
        tenant_id = kwargs.get('tenant_id')
        if not await thread_pool_exec(UserCanvasService.accessible, agent_id, tenant_id):
            return get_json_result(data=False, message="Make sure you have permission to access the agent.", code=RetCode.OPERATING_ERROR)
        return await func(*args, **kwargs)
    return wrapper


def _require_canvas_owner_sync(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        if not UserCanvasService.query(user_id=kwargs.get('tenant_id'), id=kwargs.get('agent_id')):
            return get_json_result(data=False, message="Only the owner of the agent is authorized for this operation.", code=RetCode.OPERATING_ERROR)
        return func(*args, **kwargs)
    return wrapper


def _get_user_nickname(user_id: str) -> str:
    exists, user = UserService.get_by_id(user_id)
    if not exists:
        return user_id
    return str(getattr(user, "nickname", "") or user_id)


def _build_sse_response(body):
    resp = Response(body, mimetype="text/event-stream")
    resp.headers.add_header("Cache-control", "no-cache")
    resp.headers.add_header("Connection", "keep-alive")
    resp.headers.add_header("X-Accel-Buffering", "no")
    resp.headers.add_header("Content-Type", "text/event-stream; charset=utf-8")
    return resp


def _normalize_agent_session(conv):
    conv["messages"] = conv.pop("message")
    for info in conv["messages"]:
        if "prompt" in info:
            info.pop("prompt")
    conv["agent_id"] = conv.pop("dialog_id")
    if isinstance(conv["reference"], dict):
        if "chunks" in conv["reference"]:
            conv["reference"] = [conv["reference"]]
        else:
            conv["reference"] = [value for _, value in sorted(conv["reference"].items(), key=lambda item: int(item[0]))]

    if conv["reference"]:
        messages = [message for i, message in enumerate(conv["messages"]) if i != 0 and message["role"] != "user"]
        for message, reference in zip(messages, conv["reference"]):
            chunks = reference["chunks"]
            message["reference"] = [
                {
                    "id": chunk.get("chunk_id", chunk.get("id")),
                    "content": chunk.get("content_with_weight", chunk.get("content")),
                    "document_id": chunk.get("doc_id", chunk.get("document_id")),
                    "document_name": chunk.get("docnm_kwd", chunk.get("document_name")),
                    "dataset_id": chunk.get("kb_id", chunk.get("dataset_id")),
                    "image_id": chunk.get("image_id", chunk.get("img_id")),
                    "positions": chunk.get("positions", chunk.get("position_int")),
                }
                for chunk in chunks
            ]
    del conv["reference"]
    return conv


def _agent_session_list_result(data, total):
    return jsonify({"code": RetCode.SUCCESS, "message": "success", "data": data, "total": total})


@manager.route("/agents/<agent_id>/sessions", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def list_agent_sessions(agent_id, tenant_id):
    session_id = request.args.get("id")
    user_id = request.args.get("user_id")
    page_number = int(request.args.get("page", 1))
    items_per_page = int(request.args.get("page_size", 30))
    keywords = request.args.get("keywords")
    from_date = request.args.get("from_date")
    to_date = request.args.get("to_date")
    orderby = request.args.get("orderby", "update_time")
    exp_user_id = request.args.get("exp_user_id")
    desc = request.args.get("desc") not in {"False", "false"}

    if exp_user_id:
        sessions = API4ConversationService.get_names(agent_id, exp_user_id)
        return _agent_session_list_result(sessions, len(sessions))

    include_dsl = request.args.get("dsl") not in {"False", "false"}
    total, sessions = API4ConversationService.get_list(
        agent_id,
        tenant_id,
        page_number,
        items_per_page,
        orderby,
        desc,
        session_id,
        user_id,
        include_dsl,
        keywords,
        from_date,
        to_date,
        exp_user_id=exp_user_id,
    )
    sessions = [_normalize_agent_session(session) for session in sessions]
    return _agent_session_list_result(sessions, total)


@manager.route("/agents/<agent_id>/sessions", methods=["POST"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_async
async def create_agent_session(agent_id, tenant_id):
    req = await get_request_json()
    user_id = req.get("user_id") or request.args.get("user_id", tenant_id)
    release_mode = bool(req.get("release", request.args.get("release", False)))

    try:
        cvs, dsl = UserCanvasService.get_agent_dsl_with_release(agent_id, release_mode, tenant_id)
    except LookupError:
        return get_data_error_result(message="Agent not found.")
    except PermissionError as e:
        return get_data_error_result(message=str(e))

    session_id = get_uuid()
    canvas = Canvas(dsl, tenant_id, agent_id, canvas_id=cvs.id)
    canvas.reset()

    cvs.dsl = json.loads(str(canvas))
    version_title = UserCanvasVersionService.get_latest_version_title(cvs.id, release_mode=release_mode)
    conv = {
        "id": session_id,
        "name": req.get("name", ""),
        "dialog_id": cvs.id,
        "user_id": user_id,
        "exp_user_id": user_id,
        "message": [{"role": "assistant", "content": canvas.get_prologue()}],
        "source": "agent",
        "dsl": cvs.dsl,
        "reference": [],
        "version_title": version_title,
    }
    API4ConversationService.save(**conv)
    return get_result(data=_normalize_agent_session(conv))


@manager.route("/agents/<agent_id>/sessions/<session_id>", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def get_agent_session(agent_id, session_id, tenant_id):
    _, conv = API4ConversationService.get_by_id(session_id)
    return get_json_result(data=conv.to_dict())


@manager.route("/agents/<agent_id>/sessions/<session_id>", methods=["DELETE"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def delete_agent_session_item(agent_id, session_id, tenant_id):
    return get_json_result(data=API4ConversationService.delete_by_id(session_id))


@manager.route("/agents/download", methods=["GET"])  # noqa: F821
async def download_agent_file():
    id = request.args.get("id")
    created_by = request.args.get("created_by")
    blob = FileService.get_blob(created_by, id)
    return Response(blob)


async def _iter_session_completion_events(tenant_id, agent_id, req, return_trace):
    # Stream and non-stream session completions share the same event parsing and trace injection.
    trace_items = []
    async for answer in agent_completion(tenant_id=tenant_id, agent_id=agent_id, **req):
        if isinstance(answer, str):
            try:
                ans = json.loads(answer[5:])
            except Exception:
                continue
        else:
            ans = answer

        event = ans.get("event")
        if event == "node_finished":
            if return_trace:
                data = ans.get("data", {})
                trace_items.append(
                    {
                        "component_id": data.get("component_id"),
                        "trace": [copy.deepcopy(data)],
                    }
                )
                ans.setdefault("data", {})["trace"] = trace_items
            yield ans
            continue

        if event in ["message", "message_end"]:
            yield ans


@manager.route("/agents/templates", methods=["GET"])  # noqa: F821
@login_required
def list_agent_template():
    return get_json_result(data=[item.to_dict() for item in CanvasTemplateService.get_all()])


@manager.route("/agents/prompts", methods=["GET"])  # noqa: F821
@login_required
def prompts():
    from rag.prompts.generator import (
        ANALYZE_TASK_SYSTEM,
        ANALYZE_TASK_USER,
        CITATION_PROMPT_TEMPLATE,
        NEXT_STEP,
        REFLECT,
    )

    return get_json_result(
        data={
            "task_analysis": f"{ANALYZE_TASK_SYSTEM}\n\n{ANALYZE_TASK_USER}",
            "plan_generation": NEXT_STEP,
            "reflection": REFLECT,
            "citation_guidelines": CITATION_PROMPT_TEMPLATE,
        }
    )


@manager.route("/agents", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
def list_agents(tenant_id):
    keywords = request.args.get("keywords", "")
    canvas_category = request.args.get("canvas_category")
    owner_ids = [item for item in request.args.get("owner_ids", "").strip().split(",") if item]

    page_number = int(request.args.get("page", 0))
    items_per_page = int(request.args.get("page_size", 0))
    order_by = request.args.get("orderby", "create_time")
    desc = str(request.args.get("desc", "true")).lower() != "false"
    tenants = TenantService.get_joined_tenants_by_user_id(tenant_id)
    authorized_owner_ids = {member["tenant_id"] for member in tenants}
    authorized_owner_ids.add(tenant_id)

    if owner_ids:
        requested_owner_ids = set(owner_ids)
        unauthorized_owner_ids = requested_owner_ids - authorized_owner_ids
        if unauthorized_owner_ids:
            return get_json_result(
                data=False,
                message="Only authorized owner_ids can be queried.",
                code=RetCode.OPERATING_ERROR,
            )
        effective_owner_ids = list(requested_owner_ids)
    else:
        effective_owner_ids = list(authorized_owner_ids)

    canvas, total = UserCanvasService.get_by_tenant_ids(
        effective_owner_ids,
        tenant_id,
        page_number,
        items_per_page,
        order_by,
        desc,
        keywords,
        canvas_category,
    )

    return get_json_result(data={"canvas": canvas, "total": total})


@manager.route("/agents", methods=["POST"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
async def create_agent(tenant_id):
    req = {k: v for k, v in (await get_request_json()).items() if v is not None}
    req["user_id"] = tenant_id
    req["canvas_category"] = req.get("canvas_category") or CanvasCategory.Agent
    req["release"] = bool(req.get("release", ""))

    if req.get("dsl") is None:
        return get_json_result(
            data=False,
            message="No DSL data in request.",
            code=RetCode.ARGUMENT_ERROR,
        )

    try:
        req["dsl"] = CanvasReplicaService.normalize_dsl(req["dsl"])
    except ValueError as exc:
        return get_json_result(
            data=False,
            message=str(exc),
            code=RetCode.ARGUMENT_ERROR,
        )

    if req.get("title") is None:
        return get_json_result(
            data=False,
            message="No title in request.",
            code=RetCode.ARGUMENT_ERROR,
        )

    req["title"] = req["title"].strip()
    if UserCanvasService.query(
        user_id=tenant_id,
        title=req["title"],
        canvas_category=req["canvas_category"],
    ):
        return get_data_error_result(message=f"{req['title']} already exists.")

    req["id"] = get_uuid()
    if not UserCanvasService.save(**req):
        return get_data_error_result(message="Fail to create agent.")

    owner_nickname = _get_user_nickname(tenant_id)
    UserCanvasVersionService.save_or_replace_latest(
        user_canvas_id=req["id"],
        title=UserCanvasVersionService.build_version_title(owner_nickname, req.get("title")),
        dsl=req["dsl"],
        release=req.get("release"),
    )
    replica_ok = CanvasReplicaService.replace_for_set(
        canvas_id=req["id"],
        tenant_id=str(tenant_id),
        runtime_user_id=str(tenant_id),
        dsl=req["dsl"],
        canvas_category=req["canvas_category"],
        title=req.get("title", ""),
    )
    if not replica_ok:
        return get_data_error_result(message="canvas saved, but replica sync failed.")

    exists, created_agent = UserCanvasService.get_by_canvas_id(req["id"])
    if not exists:
        return get_data_error_result(message="Fail to create agent.")
    return get_json_result(data=created_agent)


@manager.route("/agents/<agent_id>/upload", methods=["POST"])  # noqa: F821
async def upload_agent_file(agent_id):
    exists, canvas = UserCanvasService.get_by_canvas_id(agent_id)
    if not exists:
        return get_data_error_result(message="canvas not found.")

    user_id = canvas["user_id"]
    files = await request.files
    file_objs = files.getlist("file") if files and files.get("file") else []
    try:
        if len(file_objs) == 1:
            return get_json_result(
                data=FileService.upload_info(user_id, file_objs[0], request.args.get("url"))
            )
        results = [FileService.upload_info(user_id, file_obj) for file_obj in file_objs]
        return get_json_result(data=results)
    except Exception as exc:
        return server_error_response(exc)


@manager.route("/agents/<agent_id>/components/<component_id>/input-form", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def get_agent_component_input_form(agent_id, component_id, tenant_id):
    try:
        exists, user_canvas = UserCanvasService.get_by_id(agent_id)
        if not exists:
            return get_data_error_result(message="canvas not found.")
        canvas = Canvas(json.dumps(user_canvas.dsl), tenant_id, canvas_id=user_canvas.id)
        return get_json_result(data=canvas.get_component_input_form(component_id))
    except Exception as exc:
        return server_error_response(exc)


@manager.route("/agents/<agent_id>/components/<component_id>/debug", methods=["POST"])  # noqa: F821
@validate_request("params")
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_async
async def debug_agent_component(agent_id, component_id, tenant_id):
    req = await get_request_json()
    try:
        _, user_canvas = UserCanvasService.get_by_id(agent_id)
        canvas = Canvas(json.dumps(user_canvas.dsl), tenant_id, canvas_id=user_canvas.id)
        canvas.reset()
        canvas.message_id = get_uuid()
        component = canvas.get_component(component_id)["obj"]
        component.reset()

        if isinstance(component, LLM):
            component.set_debug_inputs(req["params"])
        component.invoke(**{k: o["value"] for k, o in req["params"].items()})
        outputs = component.output()
        for k in outputs.keys():
            if isinstance(outputs[k], partial):
                txt = ""
                iter_obj = outputs[k]()
                if inspect.isasyncgen(iter_obj):
                    async for c in iter_obj:
                        txt += c
                else:
                    for c in iter_obj:
                        txt += c
                outputs[k] = txt
        return get_json_result(data=outputs)
    except Exception as exc:
        return server_error_response(exc)


@manager.route("/agents/<agent_id>", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
def get_agent(agent_id, tenant_id):
    if not UserCanvasService.accessible(agent_id, tenant_id):
        return get_data_error_result(message="canvas not found.")

    exists, canvas = UserCanvasService.get_by_canvas_id(agent_id)
    if not exists:
        return get_data_error_result(message="canvas not found.")

    try:
        CanvasReplicaService.bootstrap(
            canvas_id=agent_id,
            tenant_id=str(tenant_id),
            runtime_user_id=str(tenant_id),
            dsl=canvas.get("dsl"),
            canvas_category=canvas.get("canvas_category", CanvasCategory.Agent),
            title=canvas.get("title", ""),
        )
    except ValueError as exc:
        return get_data_error_result(message=str(exc))

    last_publish_time = None
    versions = UserCanvasVersionService.list_by_canvas_id(agent_id)
    if versions:
        released_versions = [version for version in versions if version.release]
        if released_versions:
            released_versions.sort(key=lambda version: version.update_time, reverse=True)
            last_publish_time = released_versions[0].update_time

    canvas["dsl"] = normalize_chunker_dsl(canvas.get("dsl", {}))
    canvas["last_publish_time"] = last_publish_time

    if canvas.get("canvas_category") == CanvasCategory.DataFlow:
        datasets = list(KnowledgebaseService.query(pipeline_id=agent_id))
        canvas["datasets"] = [{"id": item.id, "name": item.name, "avatar": item.avatar} for item in datasets]

    return get_json_result(data=canvas)


@manager.route("/agents/<agent_id>/versions", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def list_agent_versions(agent_id, tenant_id):
    try:
        versions = sorted(
            [item.to_dict() for item in UserCanvasVersionService.list_by_canvas_id(agent_id)],
            key=lambda item: item["update_time"] * -1,
        )
        return get_json_result(data=versions)
    except Exception as exc:
        return get_data_error_result(message=f"Error getting history files: {exc}")


@manager.route("/agents/<agent_id>/versions/<version_id>", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def get_agent_version(agent_id, version_id, tenant_id):
    try:
        exists, version = UserCanvasVersionService.get_by_id(version_id)
        if not exists or not version or str(version.user_canvas_id) != str(agent_id):
            return get_data_error_result(message="Version not found.")
        return get_json_result(data=version.to_dict())
    except Exception as exc:
        return get_data_error_result(message=f"Error getting history file: {exc}")


@manager.route("/agents/<agent_id>/logs/<message_id>", methods=["GET"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_sync
def get_agent_logs(agent_id, message_id, tenant_id):
    try:
        binary = REDIS_CONN.get(f"{agent_id}-{message_id}-logs")
        if not binary:
            return get_json_result(data={})

        return get_json_result(data=json.loads(binary.encode("utf-8")))
    except Exception as exc:
        logging.exception(exc)
        return server_error_response(exc)


@manager.route("/agents/<agent_id>", methods=["DELETE"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_owner_sync
def delete_agent(agent_id, tenant_id):
    UserCanvasService.delete_by_id(agent_id)
    return get_json_result(data=True)


@manager.route("/agents/<agent_id>", methods=["PUT"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_async
async def update_agent(agent_id, tenant_id):
    req = {k: v for k, v in (await get_request_json()).items() if v is not None}
    req["release"] = bool(req.get("release", ""))

    if req.get("dsl") is not None:
        try:
            req["dsl"] = CanvasReplicaService.normalize_dsl(req["dsl"])
        except ValueError as exc:
            return get_json_result(
                data=False,
                message=str(exc),
                code=RetCode.ARGUMENT_ERROR,
            )

    if req.get("title") is not None:
        req["title"] = req["title"].strip()

    _, current_agent = UserCanvasService.get_by_id(agent_id)
    agent_title_for_version = req.get("title") or (current_agent.title if current_agent else "")
    canvas_category = (
        req.get("canvas_category")
        or (current_agent.canvas_category if current_agent else CanvasCategory.Agent)
    )
    owner_nickname = _get_user_nickname(tenant_id)
    UserCanvasService.update_by_id(agent_id, req)

    if req.get("dsl") is not None:
        UserCanvasVersionService.save_or_replace_latest(
            user_canvas_id=agent_id,
            title=UserCanvasVersionService.build_version_title(owner_nickname, agent_title_for_version),
            dsl=req["dsl"],
            release=req.get("release"),
        )
        replica_ok = CanvasReplicaService.replace_for_set(
            canvas_id=agent_id,
            tenant_id=str(tenant_id),
            runtime_user_id=str(tenant_id),
            dsl=req["dsl"],
            canvas_category=canvas_category,
            title=agent_title_for_version,
        )
        if not replica_ok:
            return get_data_error_result(message="agent saved, but replica sync failed.")

    return get_json_result(data=True)


@manager.route("/agents/<agent_id>/reset", methods=["POST"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
@_require_canvas_access_async
async def reset_agent(agent_id, tenant_id):
    try:
        exists, user_canvas = UserCanvasService.get_by_id(agent_id)
        if not exists:
            return get_data_error_result(message="canvas not found.")

        canvas = Canvas(json.dumps(user_canvas.dsl), tenant_id, canvas_id=user_canvas.id)
        canvas.reset()
        dsl = json.loads(str(canvas))
        UserCanvasService.update_by_id(agent_id, {"dsl": dsl})
        replica_ok = CanvasReplicaService.replace_for_set(
            canvas_id=agent_id,
            tenant_id=str(tenant_id),
            runtime_user_id=str(tenant_id),
            dsl=dsl,
            canvas_category=user_canvas.canvas_category,
            title=user_canvas.title,
        )
        if not replica_ok:
            return get_data_error_result(message="agent reset, but replica sync failed.")
        return get_json_result(data=dsl)
    except Exception as exc:
        return server_error_response(exc)


@manager.route("/agents/rerun", methods=["POST"])  # noqa: F821
@validate_request("id", "dsl", "component_id")
@login_required
@add_tenant_id_to_kwargs
async def rerun_agent(tenant_id):
    req = await get_request_json()
    doc = PipelineOperationLogService.get_documents_info(req["id"])
    if not doc:
        return get_data_error_result(message="Document not found.")
    doc = doc[0]
    if 0 < doc["progress"] < 1:
        return get_data_error_result(message=f"`{doc['name']}` is processing...")

    if settings.docStoreConn.index_exist(search.index_name(tenant_id), doc["kb_id"]):
        settings.docStoreConn.delete({"doc_id": doc["id"]}, search.index_name(tenant_id), doc["kb_id"])
    doc["progress_msg"] = ""
    doc["chunk_num"] = 0
    doc["token_num"] = 0
    DocumentService.clear_chunk_num_when_rerun(doc["id"])
    DocumentService.update_by_id(doc["id"], doc)
    TaskService.filter_delete([Task.doc_id == doc["id"]])

    dsl = req["dsl"]
    dsl["path"] = [req["component_id"]]
    PipelineOperationLogService.update_by_id(req["id"], {"dsl": dsl})
    queue_dataflow(
        tenant_id=tenant_id,
        flow_id=req["id"],
        task_id=get_uuid(),
        doc_id=doc["id"],
        priority=0,
        rerun=True,
    )
    return get_json_result(data=True)


@manager.route("/agents/test_db_connection", methods=["POST"])  # noqa: F821
@validate_request("db_type", "database", "username", "host", "port", "password")
@login_required
async def test_db_connection():
    req = await get_request_json()
    try:
        if req["db_type"] in ["mysql", "mariadb"]:
            db = MySQLDatabase(
                req["database"],
                user=req["username"],
                host=req["host"],
                port=req["port"],
                password=req["password"],
            )
        elif req["db_type"] == "oceanbase":
            db = MySQLDatabase(
                req["database"],
                user=req["username"],
                host=req["host"],
                port=req["port"],
                password=req["password"],
                charset="utf8mb4",
            )
        elif req["db_type"] == "postgres":
            db = PostgresqlDatabase(
                req["database"],
                user=req["username"],
                host=req["host"],
                port=req["port"],
                password=req["password"],
            )
        elif req["db_type"] == "mssql":
            import pyodbc

            connection_string = (
                f"DRIVER={{ODBC Driver 17 for SQL Server}};"
                f"SERVER={req['host']},{req['port']};"
                f"DATABASE={req['database']};"
                f"UID={req['username']};"
                f"PWD={req['password']};"
            )
            db = pyodbc.connect(connection_string)
            cursor = db.cursor()
            cursor.execute("SELECT 1")
            cursor.close()
        elif req["db_type"] == "IBM DB2":
            import ibm_db

            conn_str = (
                f"DATABASE={req['database']};"
                f"HOSTNAME={req['host']};"
                f"PORT={req['port']};"
                f"PROTOCOL=TCPIP;"
                f"UID={req['username']};"
                f"PWD={req['password']};"
            )
            logging.info(
                "DATABASE=%s;HOSTNAME=%s;PORT=%s;PROTOCOL=TCPIP;UID=%s;PWD=****;",
                req["database"],
                req["host"],
                req["port"],
                req["username"],
            )
            conn = ibm_db.connect(conn_str, "", "")
            stmt = ibm_db.exec_immediate(conn, "SELECT 1 FROM sysibm.sysdummy1")
            ibm_db.fetch_assoc(stmt)
            ibm_db.close(conn)
            return get_json_result(data="Database Connection Successful!")
        elif req["db_type"] == "trino":
            import os
            import trino

            db_name = req["database"]
            if "." in db_name:
                catalog, schema = db_name.split(".", 1)
            elif "/" in db_name:
                catalog, schema = db_name.split("/", 1)
            else:
                catalog, schema = db_name, "default"

            http_scheme = "https" if os.environ.get("TRINO_USE_TLS", "0") == "1" else "http"
            auth = None
            if http_scheme == "https" and req.get("password"):
                auth = trino.BasicAuthentication(req.get("username") or "ragflow", req["password"])

            conn = trino.dbapi.connect(
                host=req["host"],
                port=int(req["port"] or 8080),
                user=req["username"] or "ragflow",
                catalog=catalog,
                schema=schema or "default",
                http_scheme=http_scheme,
                auth=auth,
            )
            cur = conn.cursor()
            cur.execute("SELECT 1")
            cur.fetchall()
            cur.close()
            conn.close()
            return get_json_result(data="Database Connection Successful!")
        else:
            return server_error_response("Unsupported database type.")

        if req["db_type"] != "mssql":
            db.connect()
        db.close()
        return get_json_result(data="Database Connection Successful!")
    except Exception as exc:
        return server_error_response(exc)


@manager.route("/agents/chat/completion", methods=["POST"])  # noqa: F821
@manager.route("/agents/chat/completions", methods=["POST"])  # noqa: F821
@login_required
@add_tenant_id_to_kwargs
async def agent_chat_completion(tenant_id, agent_id=None):
    # This endpoint serves two execution modes:
    # 1. Draft/runtime execution without session state. The request runs against the caller's
    #    runtime replica, which is populated from the editable canvas state.
    # 2. Session continuation with an existing session_id. The request resumes from the stored
    #    API4Conversation state and must stay bound to the same agent and an accessible canvas.
    #
    # Security constraints:
    # - agent_id is always supplied at the route layer and is not forwarded downstream as a free-form kwarg.
    # - New runs without session_id must pass UserCanvasService.accessible(...) before the runtime replica is loaded.
    # - Existing sessions are validated here at the route layer before handing control to the lower-level
    #   completion functions, so canvas_service only executes a pre-authorized session payload.
    #
    # Response modes:
    # - Regular mode emits internal agent events.
    # - openai-compatible mode reshapes the same execution into an OpenAI-like wire format.
    req = await get_request_json()
    agent_id = agent_id or req.get("agent_id")
    openai_compatible = bool(req.get("openai-compatible", False))
    if not agent_id:
        return get_json_result(
            data=False,
            message="`agent_id` is required.",
            code=RetCode.ARGUMENT_ERROR,
        )
    # Route-level selectors should not be forwarded into the lower-level completion functions.
    req = dict(req)
    req.pop("agent_id", None)
    req.pop("openai-compatible", None)
    session_id = req.get("session_id")
    if session_id:
        exists, conv = API4ConversationService.get_by_id(session_id)
        if not exists:
            return get_data_error_result(message="Session not found!")
        if conv.dialog_id != agent_id:
            return get_json_result(
                data=False,
                message="Session does not belong to the requested agent.",
                code=RetCode.OPERATING_ERROR,
            )
        if not UserCanvasService.accessible(agent_id, tenant_id):
            return get_json_result(
                data=False,
                message="Only authorized users can access this agent session.",
                code=RetCode.OPERATING_ERROR,
            )

    if openai_compatible:
        # OpenAI-compatible mode uses a different wire format, keep it separate from regular agent events.
        messages = req.get("messages", [])
        if not messages:
            return get_data_error_result(message="You must provide at least one message.")
        question = next((m.get("content", "") for m in reversed(messages) if m.get("role") == "user"), "")
        stream = req.pop("stream", False)
        session_id = req.pop("session_id", req.get("id", "")) or req.get("metadata", {}).get("id", "")
        if stream:
            return _build_sse_response(
                completion_openai(
                    tenant_id,
                    agent_id,
                    question,
                    session_id=session_id,
                    stream=True,
                    **req,
                )
            )

        async for response in completion_openai(
            tenant_id,
            agent_id,
            question,
            session_id=session_id,
            stream=False,
            **req,
        ):
            return jsonify(response)
        return None

    if not session_id:
        # Without session state, run against the runtime replica that tracks draft edits.
        query = req.get("query", "") or req.get("question", "")
        files = req.get("files", [])
        inputs = req.get("inputs", {})
        runtime_user_id = req.get("user_id") or tenant_id
        user_id = str(runtime_user_id)
        custom_header = req.get("custom_header", "")

        if not UserCanvasService.accessible(agent_id, tenant_id):
            return get_json_result(
                data=False,
                message="Make sure you have permission to access the agent.",
                code=RetCode.OPERATING_ERROR,
            )

        _, cvs = await thread_pool_exec(UserCanvasService.get_by_id, agent_id)
        if not cvs:
            return get_data_error_result(message="canvas not found.")

        replica_payload = CanvasReplicaService.load_for_run(
            canvas_id=agent_id,
            tenant_id=str(tenant_id),
            runtime_user_id=user_id,
        )
        if not replica_payload:
            try:
                replica_payload = CanvasReplicaService.bootstrap(
                    canvas_id=agent_id,
                    tenant_id=str(tenant_id),
                    runtime_user_id=user_id,
                    dsl=cvs.dsl,
                    canvas_category=getattr(cvs, "canvas_category", CanvasCategory.Agent),
                    title=getattr(cvs, "title", ""),
                )
            except ValueError as exc:
                return get_data_error_result(message=str(exc))
        if not replica_payload:
            return get_data_error_result(message="canvas replica not found, please fetch the agent first.")

        replica_dsl = replica_payload.get("dsl", {})
        canvas_title = replica_payload.get("title", "")
        canvas_category = replica_payload.get("canvas_category", CanvasCategory.Agent)
        dsl_str = json.dumps(replica_dsl, ensure_ascii=False)

        if cvs.canvas_category == CanvasCategory.DataFlow:
            task_id = get_uuid()
            Pipeline(
                dsl_str,
                tenant_id=str(tenant_id),
                doc_id=CANVAS_DEBUG_DOC_ID,
                task_id=task_id,
                flow_id=agent_id,
            )
            ok, error_message = await thread_pool_exec(
                queue_dataflow,
                user_id,
                agent_id,
                task_id,
                CANVAS_DEBUG_DOC_ID,
                files[0],
                0,
            )
            if not ok:
                return get_data_error_result(message=error_message)
            return get_json_result(data={"message_id": task_id})

        try:
            canvas = Canvas(dsl_str, str(tenant_id), canvas_id=agent_id, custom_header=custom_header)
        except Exception as exc:
            return server_error_response(exc)

        async def commit_runtime_replica():
            commit_ok = CanvasReplicaService.commit_after_run(
                canvas_id=agent_id,
                tenant_id=str(tenant_id),
                runtime_user_id=user_id,
                dsl=json.loads(str(canvas)),
                canvas_category=canvas_category,
                title=canvas_title,
            )
            if not commit_ok:
                logging.error(
                    "Canvas runtime replica commit failed: canvas_id=%s tenant_id=%s runtime_user_id=%s",
                    agent_id,
                    tenant_id,
                    user_id,
                )

        if req.get("stream", True):
            async def sse():
                nonlocal canvas
                try:
                    async for ans in canvas.run(query=query, files=files, user_id=user_id, inputs=inputs):
                        yield "data:" + json.dumps(ans, ensure_ascii=False) + "\n\n"

                    await commit_runtime_replica()
                except Exception as exc:
                    logging.exception(exc)
                    canvas.cancel_task()
                    yield (
                        "data:"
                        + json.dumps({"code": 500, "message": str(exc), "data": False}, ensure_ascii=False)
                        + "\n\n"
                    )

            return _build_sse_response(sse())

        full_content = ""
        reference = {}
        final_ans = {}
        trace_items = []
        structured_output = {}
        try:
            async for ans in canvas.run(query=query, files=files, user_id=user_id, inputs=inputs):
                if ans.get("event") == "message":
                    full_content += ans.get("data", {}).get("content", "")
                if ans.get("data", {}).get("reference", None):
                    reference.update(ans["data"]["reference"])
                if ans.get("event") == "node_finished":
                    data = ans.get("data", {})
                    node_out = data.get("outputs", {})
                    component_id = data.get("component_id")
                    if component_id is not None and "structured" in node_out:
                        structured_output[component_id] = copy.deepcopy(node_out["structured"])
                    if req.get("return_trace", False):
                        trace_items.append(
                            {
                                "component_id": data.get("component_id"),
                                "trace": [copy.deepcopy(data)],
                            }
                        )
                final_ans = ans
        except Exception as exc:
            logging.exception(exc)
            canvas.cancel_task()
            return get_result(data=f"**ERROR**: {str(exc)}")

        if not final_ans:
            await commit_runtime_replica()
            return get_result(data={})

        if "data" not in final_ans or not isinstance(final_ans["data"], dict):
            final_ans["data"] = {}
        final_ans["data"]["content"] = full_content
        final_ans["data"]["reference"] = reference
        if structured_output:
            final_ans["data"]["structured"] = structured_output
        if trace_items:
            final_ans["data"]["trace"] = trace_items

        await commit_runtime_replica()
        return get_result(data=final_ans)

    return_trace = bool(req.get("return_trace", False))
    if req.get("stream", True):

        async def generate():
            async for ans in _iter_session_completion_events(tenant_id, agent_id, req, return_trace):
                yield "data:" + json.dumps(ans, ensure_ascii=False) + "\n\n"
            yield "data:[DONE]\n\n"

        return _build_sse_response(generate())

    full_content = ""
    reference = {}
    final_ans = {}
    trace_items = []
    structured_output = {}
    async for ans in _iter_session_completion_events(tenant_id, agent_id, req, return_trace):
        try:
            if ans["event"] == "message":
                full_content += ans["data"]["content"]
            if ans.get("data", {}).get("reference", None):
                reference.update(ans["data"]["reference"])
            if ans.get("event") == "node_finished":
                data = ans.get("data", {})
                node_out = data.get("outputs", {})
                component_id = data.get("component_id")
                if component_id is not None and "structured" in node_out:
                    structured_output[component_id] = copy.deepcopy(node_out["structured"])
                if return_trace:
                    trace_items.append(
                        {
                            "component_id": data.get("component_id"),
                            "trace": [copy.deepcopy(data)],
                        }
                    )
            final_ans = ans
        except Exception as exc:
            return get_result(data=f"**ERROR**: {str(exc)}")

    if not final_ans:
        return get_result(data={})

    if "data" not in final_ans or not isinstance(final_ans["data"], dict):
        final_ans["data"] = {}
    final_ans["data"]["content"] = full_content
    final_ans["data"]["reference"] = reference
    if structured_output:
        final_ans["data"]["structured"] = structured_output
    if return_trace and final_ans:
        final_ans["data"]["trace"] = trace_items
    return get_result(data=final_ans)


@manager.route("/agents/<agent_id>/webhook", methods=["POST", "GET", "PUT", "PATCH", "DELETE", "HEAD"])  # noqa: F821
@manager.route("/agents/<agent_id>/webhook/test",methods=["POST", "GET", "PUT", "PATCH", "DELETE", "HEAD"],)  # noqa: F821
async def webhook(agent_id: str):
    is_test = request.path.startswith(f"/api/v1/agents/{agent_id}/webhook/test")
    start_ts = time.time()

    # 1. Fetch canvas by agent_id
    exists, cvs = UserCanvasService.get_by_id(agent_id)
    if not exists:
        return get_data_error_result(code=RetCode.BAD_REQUEST,message="Canvas not found."),RetCode.BAD_REQUEST

    # 2. Check canvas category
    if cvs.canvas_category == CanvasCategory.DataFlow:
        return get_data_error_result(code=RetCode.BAD_REQUEST,message="Dataflow can not be triggered by webhook."),RetCode.BAD_REQUEST

    # 3. Load DSL from canvas
    dsl = getattr(cvs, "dsl", None)
    if not isinstance(dsl, dict):
        return get_data_error_result(code=RetCode.BAD_REQUEST,message="Invalid DSL format."),RetCode.BAD_REQUEST

    # 4. Check webhook configuration in DSL
    webhook_cfg = {}
    components = dsl.get("components", {})
    for k, _ in components.items():
        cpn_obj = components[k]["obj"]
        if cpn_obj["component_name"].lower() == "begin" and cpn_obj["params"]["mode"] == "Webhook":
            webhook_cfg = cpn_obj["params"]

    if not webhook_cfg:
        return get_data_error_result(code=RetCode.BAD_REQUEST,message="Webhook not configured for this agent."),RetCode.BAD_REQUEST

    # 5. Validate request method against webhook_cfg.methods
    allowed_methods = webhook_cfg.get("methods", [])
    request_method = request.method.upper()
    if allowed_methods and request_method not in allowed_methods:
        return get_data_error_result(
            code=RetCode.BAD_REQUEST,message=f"HTTP method '{request_method}' not allowed for this webhook."
        ),RetCode.BAD_REQUEST

    # 6. Validate webhook security
    async def validate_webhook_security(security_cfg: dict):
        """Validate webhook security rules based on security configuration."""

        if not security_cfg:
            return  # No security config → allowed by default

        # 1. Validate max body size
        await _validate_max_body_size(security_cfg)

        # 2. Validate IP whitelist
        _validate_ip_whitelist(security_cfg)

        # # 3. Validate rate limiting
        _validate_rate_limit(security_cfg)

        # 4. Validate authentication
        auth_type = security_cfg.get("auth_type", "none")

        if auth_type == "none":
            return

        if auth_type == "token":
            _validate_token_auth(security_cfg)

        elif auth_type == "basic":
            _validate_basic_auth(security_cfg)

        elif auth_type == "jwt":
            _validate_jwt_auth(security_cfg)

        else:
            raise Exception(f"Unsupported auth_type: {auth_type}")

    async def _validate_max_body_size(security_cfg):
        """Check request size does not exceed max_body_size."""
        max_size = security_cfg.get("max_body_size")
        if not max_size:
            return

        # Convert "10MB" → bytes
        units = {"kb": 1024, "mb": 1024**2}
        size_str = max_size.lower()

        for suffix, factor in units.items():
            if size_str.endswith(suffix):
                limit = int(size_str.replace(suffix, "")) * factor
                break
        else:
            raise Exception("Invalid max_body_size format")
        MAX_LIMIT = 10 * 1024 * 1024  # 10MB
        if limit > MAX_LIMIT:
            raise Exception("max_body_size exceeds maximum allowed size (10MB)")

        content_length = request.content_length or 0
        if content_length > limit:
            raise Exception(f"Request body too large: {content_length} > {limit}")

    def _validate_ip_whitelist(security_cfg):
        """Allow only IPs listed in ip_whitelist."""
        whitelist = security_cfg.get("ip_whitelist", [])
        if not whitelist:
            return

        client_ip = request.remote_addr


        for rule in whitelist:
            if "/" in rule:
                # CIDR notation
                if ipaddress.ip_address(client_ip) in ipaddress.ip_network(rule, strict=False):
                    return
            else:
                # Single IP
                if client_ip == rule:
                    return

        raise Exception(f"IP {client_ip} is not allowed by whitelist")

    def _validate_rate_limit(security_cfg):
        """Simple in-memory rate limiting."""
        rl = security_cfg.get("rate_limit")
        if not rl:
            return

        limit = int(rl.get("limit", 60))
        if limit <= 0:
            raise Exception("rate_limit.limit must be > 0")
        per = rl.get("per", "minute")

        window = {
            "second": 1,
            "minute": 60,
            "hour": 3600,
            "day": 86400,
        }.get(per)

        if not window:
            raise Exception(f"Invalid rate_limit.per: {per}")

        capacity = limit
        rate = limit / window
        cost = 1

        key = f"rl:tb:{agent_id}"
        now = time.time()

        try:
            res = REDIS_CONN.lua_token_bucket(
                keys=[key],
                args=[capacity, rate, now, cost],
                client=REDIS_CONN.REDIS,
            )

            allowed = int(res[0])
            if allowed != 1:
                raise Exception("Too many requests (rate limit exceeded)")

        except Exception as e:
            raise Exception(f"Rate limit error: {e}")

    def _validate_token_auth(security_cfg):
        """Validate header-based token authentication."""
        token_cfg = security_cfg.get("token",{})
        header = token_cfg.get("token_header")
        token_value = token_cfg.get("token_value")

        provided = request.headers.get(header)
        if provided != token_value:
            raise Exception("Invalid token authentication")

    def _validate_basic_auth(security_cfg):
        """Validate HTTP Basic Auth credentials."""
        auth_cfg = security_cfg.get("basic_auth", {})
        username = auth_cfg.get("username")
        password = auth_cfg.get("password")

        auth = request.authorization
        if not auth or auth.username != username or auth.password != password:
            raise Exception("Invalid Basic Auth credentials")

    def _validate_jwt_auth(security_cfg):
        """Validate JWT token in Authorization header."""
        jwt_cfg = security_cfg.get("jwt", {})
        secret = jwt_cfg.get("secret")
        if not secret:
            raise Exception("JWT secret not configured")

        auth_header = request.headers.get("Authorization", "")
        if not auth_header.startswith("Bearer "):
            raise Exception("Missing Bearer token")

        token = auth_header[len("Bearer "):].strip()
        if not token:
            raise Exception("Empty Bearer token")

        alg = (jwt_cfg.get("algorithm") or "HS256").upper()

        decode_kwargs = {
            "key": secret,
            "algorithms": [alg],
        }
        options = {}
        if jwt_cfg.get("audience"):
            decode_kwargs["audience"] = jwt_cfg["audience"]
            options["verify_aud"] = True
        else:
            options["verify_aud"] = False

        if jwt_cfg.get("issuer"):
            decode_kwargs["issuer"] = jwt_cfg["issuer"]
            options["verify_iss"] = True
        else:
            options["verify_iss"] = False
        try:
            decoded = jwt.decode(
                token,
                options=options,
                **decode_kwargs,
            )
        except Exception as e:
            raise Exception(f"Invalid JWT: {str(e)}")

        raw_required_claims = jwt_cfg.get("required_claims", [])
        if isinstance(raw_required_claims, str):
            required_claims = [raw_required_claims]
        elif isinstance(raw_required_claims, (list, tuple, set)):
            required_claims = list(raw_required_claims)
        else:
            required_claims = []

        required_claims = [
            c for c in required_claims
            if isinstance(c, str) and c.strip()
        ]

        RESERVED_CLAIMS = {"exp", "sub", "aud", "iss", "nbf", "iat"}
        for claim in required_claims:
            if claim in RESERVED_CLAIMS:
                raise Exception(f"Reserved JWT claim cannot be required: {claim}")

        for claim in required_claims:
            if claim not in decoded:
                raise Exception(f"Missing JWT claim: {claim}")

        return decoded

    try:
        security_config=webhook_cfg.get("security", {})
        await validate_webhook_security(security_config)
    except Exception as e:
        return get_data_error_result(code=RetCode.BAD_REQUEST,message=str(e)),RetCode.BAD_REQUEST
    if not isinstance(cvs.dsl, str):
        dsl = json.dumps(cvs.dsl, ensure_ascii=False)
    try:
        canvas = Canvas(dsl, cvs.user_id, agent_id, canvas_id=agent_id)
    except Exception as e:
        resp=get_data_error_result(code=RetCode.BAD_REQUEST,message=str(e))
        resp.status_code = RetCode.BAD_REQUEST
        return resp

    # 7. Parse request body
    async def parse_webhook_request(content_type):
        """Parse request based on content-type and return structured data."""

        # 1. Query
        query_data = {k: v for k, v in request.args.items()}

        # 2. Headers
        header_data = {k: v for k, v in request.headers.items()}

        # 3. Body
        ctype = request.headers.get("Content-Type", "").split(";")[0].strip()
        if ctype and ctype != content_type:
            raise ValueError(
                f"Invalid Content-Type: expect '{content_type}', got '{ctype}'"
            )

        body_data: dict = {}

        try:
            if ctype == "application/json":
                body_data = await request.get_json() or {}

            elif ctype == "multipart/form-data":
                nonlocal canvas
                form = await request.form
                files = await request.files

                body_data = {}

                for key, value in form.items():
                    body_data[key] = value

                if len(files) > 10:
                    raise Exception("Too many uploaded files")
                for key, file in files.items():
                    desc = FileService.upload_info(
                        cvs.user_id,           # user
                        file,              # FileStorage
                        None                   # url (None for webhook)
                    )
                    file_parsed= await canvas.get_files_async([desc])
                    body_data[key] = file_parsed

            elif ctype == "application/x-www-form-urlencoded":
                form = await request.form
                body_data = dict(form)

            else:
                # text/plain / octet-stream / empty / unknown
                raw = await request.get_data()
                if raw:
                    try:
                        body_data = json.loads(raw.decode("utf-8"))
                    except Exception:
                        body_data = {}
                else:
                    body_data = {}

        except Exception:
            body_data = {}

        return {
            "query": query_data,
            "headers": header_data,
            "body": body_data,
            "content_type": ctype,
        }

    def extract_by_schema(data, schema, name="section"):
        """
        Extract only fields defined in schema.
        Required fields must exist.
        Optional fields default to type-based default values.
        Type validation included.
        """
        props = schema.get("properties", {})
        required = schema.get("required", [])

        extracted = {}

        for field, field_schema in props.items():
            field_type = field_schema.get("type")

            # 1. Required field missing
            if field in required and field not in data:
                raise Exception(f"{name} missing required field: {field}")

            # 2. Optional → default value
            if field not in data:
                extracted[field] = default_for_type(field_type)
                continue

            raw_value = data[field]

            # 3. Auto convert value
            try:
                value = auto_cast_value(raw_value, field_type)
            except Exception as e:
                raise Exception(f"{name}.{field} auto-cast failed: {str(e)}")

            # 4. Type validation
            if not validate_type(value, field_type):
                raise Exception(
                    f"{name}.{field} type mismatch: expected {field_type}, got {type(value).__name__}"
                )

            extracted[field] = value

        return extracted


    def default_for_type(t):
        """Return default value for the given schema type."""
        if t == "file":
            return []
        if t == "object":
            return {}
        if t == "boolean":
            return False
        if t == "number":
            return 0
        if t == "string":
            return ""
        if t and t.startswith("array"):
            return []
        if t == "null":
            return None
        return None

    def auto_cast_value(value, expected_type):
        """Convert string values into schema type when possible."""

        # Non-string values already good
        if not isinstance(value, str):
            return value

        v = value.strip()

        # Boolean
        if expected_type == "boolean":
            if v.lower() in ["true", "1"]:
                return True
            if v.lower() in ["false", "0"]:
                return False
            raise Exception(f"Cannot convert '{value}' to boolean")

        # Number
        if expected_type == "number":
            # integer
            if v.isdigit() or (v.startswith("-") and v[1:].isdigit()):
                return int(v)

            # float
            try:
                return float(v)
            except Exception:
                raise Exception(f"Cannot convert '{value}' to number")

        # Object
        if expected_type == "object":
            try:
                parsed = json.loads(v)
                if isinstance(parsed, dict):
                    return parsed
                else:
                    raise Exception("JSON is not an object")
            except Exception:
                raise Exception(f"Cannot convert '{value}' to object")

        # Array <T>
        if expected_type.startswith("array"):
            try:
                parsed = json.loads(v)
                if isinstance(parsed, list):
                    return parsed
                else:
                    raise Exception("JSON is not an array")
            except Exception:
                raise Exception(f"Cannot convert '{value}' to array")

        # String (accept original)
        if expected_type == "string":
            return value

        # File
        if expected_type == "file":
            return value
        # Default: do nothing
        return value


    def validate_type(value, t):
        """Validate value type against schema type t."""
        if t == "file":
            return isinstance(value, list)

        if t == "string":
            return isinstance(value, str)

        if t == "number":
            return isinstance(value, (int, float))

        if t == "boolean":
            return isinstance(value, bool)

        if t == "object":
            return isinstance(value, dict)

        # array<string> / array<number> / array<object>
        if t.startswith("array"):
            if not isinstance(value, list):
                return False

            if "<" in t and ">" in t:
                inner = t[t.find("<") + 1 : t.find(">")]

                # Check each element type
                for item in value:
                    if not validate_type(item, inner):
                        return False

            return True

        return True
    parsed = await parse_webhook_request(webhook_cfg.get("content_types"))
    SCHEMA = webhook_cfg.get("schema", {"query": {}, "headers": {}, "body": {}})

    # Extract strictly by schema
    try:
        query_clean  = extract_by_schema(parsed["query"],   SCHEMA.get("query", {}),  name="query")
        header_clean = extract_by_schema(parsed["headers"], SCHEMA.get("headers", {}), name="headers")
        body_clean   = extract_by_schema(parsed["body"],    SCHEMA.get("body", {}),    name="body")
    except Exception as e:
        return get_data_error_result(code=RetCode.BAD_REQUEST,message=str(e)),RetCode.BAD_REQUEST

    clean_request = {
        "query": query_clean,
        "headers": header_clean,
        "body": body_clean,
        "input": parsed
    }

    execution_mode = webhook_cfg.get("execution_mode", "Immediately")
    response_cfg = webhook_cfg.get("response", {})

    def append_webhook_trace(agent_id: str, start_ts: float,event: dict, ttl=600):
        key = f"webhook-trace-{agent_id}-logs"

        raw = REDIS_CONN.get(key)
        obj = json.loads(raw) if raw else {"webhooks": {}}

        ws = obj["webhooks"].setdefault(
            str(start_ts),
            {"start_ts": start_ts, "events": []}
        )

        ws["events"].append({
            "ts": time.time(),
            **event
        })

        REDIS_CONN.set_obj(key, obj, ttl)

    if execution_mode == "Immediately":
        status = response_cfg.get("status", 200)
        try:
            status = int(status)
        except (TypeError, ValueError):
            return get_data_error_result(code=RetCode.BAD_REQUEST,message=str(f"Invalid response status code: {status}")),RetCode.BAD_REQUEST

        if not (200 <= status <= 399):
            return get_data_error_result(code=RetCode.BAD_REQUEST,message=str(f"Invalid response status code: {status}, must be between 200 and 399")),RetCode.BAD_REQUEST

        body_tpl = response_cfg.get("body_template", "")

        def parse_body(body: str):
            if not body:
                return None, "application/json"

            try:
                parsed = json.loads(body)
                return parsed, "application/json"
            except (json.JSONDecodeError, TypeError):
                return body, "text/plain"


        body, content_type = parse_body(body_tpl)
        resp = Response(
            json.dumps(body, ensure_ascii=False) if content_type == "application/json" else body,
            status=status,
            content_type=content_type,
        )

        async def background_run():
            try:
                async for ans in canvas.run(
                    query="",
                    user_id=cvs.user_id,
                    webhook_payload=clean_request
                ):
                    if is_test:
                        append_webhook_trace(agent_id, start_ts, ans)

                if is_test:
                    append_webhook_trace(
                        agent_id,
                        start_ts,
                        {
                            "event": "finished",
                            "elapsed_time": time.time() - start_ts,
                            "success": True,
                        }
                    )

                cvs.dsl = json.loads(str(canvas))
                UserCanvasService.update_by_id(cvs.user_id, cvs.to_dict())

            except Exception as e:
                logging.exception("Webhook background run failed")
                if is_test:
                    try:
                        append_webhook_trace(
                            agent_id,
                            start_ts,
                            {
                                "event": "error",
                                "message": str(e),
                                "error_type": type(e).__name__,
                            }
                        )
                        append_webhook_trace(
                            agent_id,
                            start_ts,
                            {
                                "event": "finished",
                                "elapsed_time": time.time() - start_ts,
                                "success": False,
                            }
                        )
                    except Exception:
                        logging.exception("Failed to append webhook trace")

        asyncio.create_task(background_run())
        return resp
    else:
        async def sse():
            nonlocal canvas
            contents: list[str] = []
            status = 200
            try:
                async for ans in canvas.run(
                    query="",
                    user_id=cvs.user_id,
                    webhook_payload=clean_request,
                ):
                    if ans["event"] == "message":
                        content = ans["data"]["content"]
                        if ans["data"].get("start_to_think", False):
                            content = "<think>"
                        elif ans["data"].get("end_to_think", False):
                            content = "</think>"
                        if content:
                            contents.append(content)
                    if ans["event"] == "message_end":
                        status = int(ans["data"].get("status", status))
                    if is_test:
                        append_webhook_trace(
                            agent_id,
                            start_ts,
                            ans
                        )
                if is_test:
                    append_webhook_trace(
                        agent_id,
                        start_ts,
                        {
                            "event": "finished",
                            "elapsed_time": time.time() - start_ts,
                            "success": True,
                        }
                    )
                final_content = "".join(contents)
                return {
                    "message": final_content,
                    "success": True,
                    "code":  status,
                }

            except Exception as e:
                if is_test:
                    append_webhook_trace(
                        agent_id,
                        start_ts,
                        {
                            "event": "error",
                            "message": str(e),
                            "error_type": type(e).__name__,
                        }
                    )
                    append_webhook_trace(
                        agent_id,
                        start_ts,
                        {
                            "event": "finished",
                            "elapsed_time": time.time() - start_ts,
                            "success": False,
                        }
                    )
                return {"code": 400, "message": str(e),"success":False}

        result = await sse()
        return Response(
            json.dumps(result),
            status=result["code"],
            mimetype="application/json",
        )


@manager.route("/agents/<agent_id>/webhook/logs", methods=["GET"])  # noqa: F821
@login_required
async def webhook_trace(agent_id: str):
    exists, cvs = UserCanvasService.get_by_id(agent_id)
    if not exists or str(cvs.user_id) != str(current_user.id):
        return get_data_error_result(
            message="Canvas not found.",
        )

    def encode_webhook_id(start_ts: str) -> str:
        WEBHOOK_ID_SECRET = "webhook_id_secret"
        sig = hmac.new(
            WEBHOOK_ID_SECRET.encode("utf-8"),
            start_ts.encode("utf-8"),
            hashlib.sha256,
        ).digest()
        return base64.urlsafe_b64encode(sig).decode("utf-8").rstrip("=")

    def decode_webhook_id(enc_id: str, webhooks: dict) -> str | None:
        for ts in webhooks.keys():
            if encode_webhook_id(ts) == enc_id:
                return ts
        return None
    since_ts = request.args.get("since_ts", type=float)
    webhook_id = request.args.get("webhook_id")

    key = f"webhook-trace-{agent_id}-logs"
    raw = REDIS_CONN.get(key)

    if since_ts is None:
        now = time.time()
        return get_json_result(
            data={
                "webhook_id": None,
                "events": [],
                "next_since_ts": now,
                "finished": False,
            }
        )

    if not raw:
        return get_json_result(
            data={
                "webhook_id": None,
                "events": [],
                "next_since_ts": since_ts,
                "finished": False,
            }
        )

    obj = json.loads(raw)
    webhooks = obj.get("webhooks", {})

    if webhook_id is None:
        candidates = [
            float(k) for k in webhooks.keys() if float(k) > since_ts
        ]

        if not candidates:
            return get_json_result(
                data={
                    "webhook_id": None,
                    "events": [],
                    "next_since_ts": since_ts,
                    "finished": False,
                }
            )

        start_ts = min(candidates)
        real_id = str(start_ts)
        webhook_id = encode_webhook_id(real_id)

        return get_json_result(
            data={
                "webhook_id": webhook_id,
                "events": [],
                "next_since_ts": start_ts,
                "finished": False,
            }
        )

    real_id = decode_webhook_id(webhook_id, webhooks)

    if not real_id:
        return get_json_result(
            data={
                "webhook_id": webhook_id,
                "events": [],
                "next_since_ts": since_ts,
                "finished": True,
            }
        )

    ws = webhooks.get(str(real_id))
    events = ws.get("events", [])
    new_events = [e for e in events if e.get("ts", 0) > since_ts]

    next_ts = since_ts
    for e in new_events:
        next_ts = max(next_ts, e["ts"])

    finished = any(e.get("event") == "finished" for e in new_events)

    return get_json_result(
        data={
            "webhook_id": webhook_id,
            "events": new_events,
            "next_since_ts": next_ts,
            "finished": finished,
        }
    )