from uuid import UUID

from flask import abort, request
from flask_restx import Resource
from pydantic import BaseModel, Field, field_validator

from controllers.common.schema import query_params_from_model, register_response_schema_models, register_schema_models
from controllers.console import console_ns
from controllers.console.agent.app_helpers import resolve_agent_app_model
from controllers.console.app.app import (
    AppDetailWithSite,
    AppListQuery,
    AppPagination,
    AppPartial,
    UpdateAppPayload,
    _normalize_app_list_query_args,
)
from controllers.console.wraps import (
    account_initialization_required,
    cloud_edition_billing_resource_check,
    edit_permission_required,
    enterprise_license_required,
    setup_required,
    with_current_tenant_id,
    with_current_user,
)
from extensions.ext_database import db
from fields.agent_fields import (
    AgentConfigSnapshotDetailResponse,
    AgentConfigSnapshotListResponse,
    AgentInviteOptionsResponse,
    AgentLogListResponse,
    AgentPublishedReferenceResponse,
    AgentRosterListResponse,
    AgentStatisticSummaryEnvelopeResponse,
)
from libs.datetime_utils import parse_time_range
from libs.helper import dump_response
from libs.login import login_required
from models import Account
from models.model import IconType
from services.agent.errors import AgentNotFoundError
from services.agent.observability_service import (
    AgentLogQueryParams,
    AgentObservabilityService,
    AgentStatisticsQueryParams,
)
from services.agent.roster_service import AgentRosterService
from services.app_service import AppListParams, AppService, CreateAppParams
from services.enterprise.enterprise_service import EnterpriseService
from services.entities.agent_entities import RosterListQuery
from services.feature_service import FeatureService


class AgentInviteOptionsQuery(RosterListQuery):
    app_id: str | None = Field(default=None, description="Workflow app id for in-current-workflow markers")


class AgentIdPath(BaseModel):
    agent_id: str


class AgentAppCreatePayload(BaseModel):
    name: str = Field(..., min_length=1, description="Agent name")
    description: str | None = Field(default=None, description="Agent description (max 400 chars)", max_length=400)
    role: str = Field(default="", description="Agent role", max_length=255)
    icon_type: IconType | None = Field(default=None, description="Icon type")
    icon: str | None = Field(default=None, description="Icon")
    icon_background: str | None = Field(default=None, description="Icon background color")


class AgentAppUpdatePayload(UpdateAppPayload):
    role: str | None = Field(default=None, description="Agent role", max_length=255)


class AgentAppPublishedReferenceResponse(BaseModel):
    app_id: str
    app_name: str
    app_icon_type: str | None = None
    app_icon: str | None = None
    app_icon_background: str | None = None


class AgentAppPartial(AppPartial):
    published_reference_count: int = 0
    published_references: list[AgentAppPublishedReferenceResponse] = Field(default_factory=list)


class AgentAppPagination(BaseModel):
    page: int
    limit: int
    total: int
    has_more: bool
    data: list[AgentAppPartial]


class AgentLogsQuery(BaseModel):
    page: int = Field(default=1, ge=1, description="Page number")
    limit: int = Field(default=20, ge=1, le=100, description="Page size")
    keyword: str | None = Field(default=None, description="Search query, answer, or conversation name")
    status: str | None = Field(default=None, description="Filter by success, failed, or paused")
    source: str | None = Field(
        default=None,
        description="Filter by all, console/explore, api/service-api, web-app, debugger, openapi, or trigger",
    )
    start: str | None = Field(default=None, description="Start date (YYYY-MM-DD HH:MM)")
    end: str | None = Field(default=None, description="End date (YYYY-MM-DD HH:MM)")

    @field_validator("keyword", "status", "source", "start", "end", mode="before")
    @classmethod
    def empty_string_to_none(cls, value: str | None) -> str | None:
        if value == "":
            return None
        return value


class AgentStatisticsQuery(BaseModel):
    source: str | None = Field(
        default=None,
        description="Filter by all, console/explore, api/service-api, web-app, debugger, openapi, or trigger",
    )
    start: str | None = Field(default=None, description="Start date (YYYY-MM-DD HH:MM)")
    end: str | None = Field(default=None, description="End date (YYYY-MM-DD HH:MM)")

    @field_validator("source", "start", "end", mode="before")
    @classmethod
    def empty_string_to_none(cls, value: str | None) -> str | None:
        if value == "":
            return None
        return value


register_schema_models(
    console_ns,
    AgentAppCreatePayload,
    AgentAppUpdatePayload,
    AgentInviteOptionsQuery,
    AgentLogsQuery,
    AgentStatisticsQuery,
    AgentIdPath,
    AppListQuery,
    UpdateAppPayload,
    RosterListQuery,
)
register_response_schema_models(
    console_ns,
    AppDetailWithSite,
    AgentAppPagination,
    AgentAppPublishedReferenceResponse,
    AgentConfigSnapshotDetailResponse,
    AgentConfigSnapshotListResponse,
    AgentInviteOptionsResponse,
    AgentLogListResponse,
    AgentPublishedReferenceResponse,
    AgentRosterListResponse,
    AgentStatisticSummaryEnvelopeResponse,
)


def _agent_roster_service() -> AgentRosterService:
    return AgentRosterService(db.session)


def _serialize_agent_app_detail(app_model) -> dict:
    app_model = AppService().get_app(app_model)
    if FeatureService.get_system_features().webapp_auth.enabled:
        app_setting = EnterpriseService.WebAppAuth.get_app_access_mode_by_id(app_id=str(app_model.id))
        app_model.access_mode = app_setting.access_mode  # type: ignore[attr-defined]

    roster_service = _agent_roster_service()
    agent = roster_service.get_app_backing_agent(tenant_id=app_model.tenant_id, app_id=app_model.id)
    if not agent:
        raise AgentNotFoundError()
    payload = AppDetailWithSite.model_validate(app_model, from_attributes=True).model_dump(mode="json")
    payload.pop("bound_agent_id", None)
    payload["app_id"] = str(app_model.id)
    payload["id"] = agent.id
    payload["role"] = agent.role or ""
    payload["active_config_is_published"] = roster_service.active_config_is_published(
        tenant_id=app_model.tenant_id,
        agent=agent,
    )
    return payload


def _serialize_agent_app_pagination(app_pagination, *, tenant_id: str) -> dict:
    app_ids = [str(app.id) for app in app_pagination.items]
    roster_service = _agent_roster_service()
    agents_by_app_id = roster_service.load_app_backing_agents_by_app_id(
        tenant_id=tenant_id,
        app_ids=app_ids,
    )
    active_config_is_published_by_agent_id = roster_service.load_active_config_is_published_by_agent_id(
        tenant_id=tenant_id,
        agents=list(agents_by_app_id.values()),
    )
    published_references_by_agent_id = roster_service.load_published_references_by_agent_id(
        tenant_id=tenant_id,
        agent_ids=[agent.id for agent in agents_by_app_id.values()],
    )
    payload = AppPagination.model_validate(app_pagination, from_attributes=True).model_dump(mode="json")
    for item in payload["data"]:
        app_id = item["id"]
        item.pop("bound_agent_id", None)
        agent = agents_by_app_id.get(app_id)
        if agent:
            item["app_id"] = app_id
            item["id"] = agent.id
            item["role"] = agent.role or ""
            item["active_config_is_published"] = active_config_is_published_by_agent_id.get(agent.id, False)
            published_references = published_references_by_agent_id.get(agent.id, [])
            item["published_reference_count"] = len(published_references)
            item["published_references"] = [
                {
                    "app_id": reference["app_id"],
                    "app_name": reference["app_name"],
                    "app_icon_type": reference["app_icon_type"],
                    "app_icon": reference["app_icon"],
                    "app_icon_background": reference["app_icon_background"],
                }
                for reference in published_references
            ]
    return AgentAppPagination.model_validate(payload).model_dump(
        mode="json",
        exclude={"data": {"__all__": {"bound_agent_id"}}},
    )


def _resolve_agent_app_model(*, tenant_id: str, agent_id: UUID):
    return resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)


def _agent_observability_service() -> AgentObservabilityService:
    return AgentObservabilityService(db.session)


def _parse_observability_time_range(start: str | None, end: str | None, account: Account):
    timezone = account.timezone or "UTC"
    try:
        return parse_time_range(start, end, timezone)
    except ValueError as exc:
        abort(400, description=str(exc))


@console_ns.route("/agent")
class AgentAppListApi(Resource):
    @console_ns.doc(params=query_params_from_model(AppListQuery))
    @console_ns.response(200, "Agent app list", console_ns.models[AgentAppPagination.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_user
    @with_current_tenant_id
    def get(self, current_tenant_id: str, current_user: Account):
        args = AppListQuery.model_validate(_normalize_app_list_query_args(request.args))
        params = AppListParams(
            page=args.page,
            limit=args.limit,
            mode="agent",
            name=args.name,
            tag_ids=args.tag_ids,
            creator_ids=args.creator_ids,
            is_created_by_me=args.is_created_by_me,
            status="normal",
        )

        app_pagination = AppService().get_paginate_apps(current_user.id, current_tenant_id, params)
        if app_pagination is None:
            empty = AgentAppPagination(page=args.page, limit=args.limit, total=0, has_more=False, data=[])
            return empty.model_dump(mode="json")

        return _serialize_agent_app_pagination(app_pagination, tenant_id=current_tenant_id)

    @console_ns.expect(console_ns.models[AgentAppCreatePayload.__name__])
    @console_ns.response(201, "Agent app created successfully", console_ns.models[AppDetailWithSite.__name__])
    @console_ns.response(403, "Insufficient permissions")
    @console_ns.response(400, "Invalid request parameters")
    @setup_required
    @login_required
    @account_initialization_required
    @cloud_edition_billing_resource_check("apps")
    @edit_permission_required
    @with_current_user
    @with_current_tenant_id
    def post(self, current_tenant_id: str, current_user: Account):
        args = AgentAppCreatePayload.model_validate(console_ns.payload)
        params = CreateAppParams(
            name=args.name,
            description=args.description,
            mode="agent",
            agent_role=args.role,
            icon_type=args.icon_type,
            icon=args.icon,
            icon_background=args.icon_background,
        )

        app = AppService().create_app(current_tenant_id, params, current_user)
        return _serialize_agent_app_detail(app), 201


@console_ns.route("/agent/<uuid:agent_id>")
class AgentAppApi(Resource):
    @console_ns.response(200, "Agent app detail", console_ns.models[AppDetailWithSite.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @enterprise_license_required
    @with_current_tenant_id
    def get(self, tenant_id: str, agent_id: UUID):
        app_model = _resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)
        return _serialize_agent_app_detail(app_model)

    @console_ns.expect(console_ns.models[AgentAppUpdatePayload.__name__])
    @console_ns.response(200, "Agent app updated successfully", console_ns.models[AppDetailWithSite.__name__])
    @console_ns.response(403, "Insufficient permissions")
    @console_ns.response(400, "Invalid request parameters")
    @setup_required
    @login_required
    @account_initialization_required
    @edit_permission_required
    @with_current_tenant_id
    def put(self, tenant_id: str, agent_id: UUID):
        app_model = _resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)
        args = AgentAppUpdatePayload.model_validate(console_ns.payload)
        args_dict: AppService.ArgsDict = {
            "name": args.name,
            "description": args.description or "",
            "icon_type": args.icon_type,
            "icon": args.icon or "",
            "icon_background": args.icon_background or "",
            "use_icon_as_answer_icon": args.use_icon_as_answer_icon or False,
            "max_active_requests": args.max_active_requests or 0,
            "role": args.role,
        }
        updated = AppService().update_app(app_model, args_dict)
        return _serialize_agent_app_detail(updated)

    @console_ns.response(204, "Agent app deleted successfully")
    @console_ns.response(403, "Insufficient permissions")
    @setup_required
    @login_required
    @account_initialization_required
    @edit_permission_required
    @with_current_tenant_id
    def delete(self, tenant_id: str, agent_id: UUID):
        app_model = _resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)
        AppService().delete_app(app_model)
        return "", 204


@console_ns.route("/agent/invite-options")
class AgentInviteOptionsApi(Resource):
    @console_ns.doc(params=query_params_from_model(AgentInviteOptionsQuery))
    @console_ns.response(200, "Agent invite options", console_ns.models[AgentInviteOptionsResponse.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_tenant_id
    def get(self, tenant_id: str):
        query = AgentInviteOptionsQuery.model_validate(request.args.to_dict(flat=True))
        return dump_response(
            AgentInviteOptionsResponse,
            _agent_roster_service().list_invite_options(
                tenant_id=tenant_id,
                page=query.page,
                limit=query.limit,
                keyword=query.keyword,
                app_id=query.app_id,
            ),
        )


@console_ns.route("/agent/<uuid:agent_id>/logs")
class AgentLogsApi(Resource):
    @console_ns.doc(params=query_params_from_model(AgentLogsQuery))
    @console_ns.response(200, "Agent logs", console_ns.models[AgentLogListResponse.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_user
    @with_current_tenant_id
    def get(self, tenant_id: str, current_user: Account, agent_id: UUID):
        app_model = _resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)
        query = AgentLogsQuery.model_validate(request.args.to_dict(flat=True))
        start, end = _parse_observability_time_range(query.start, query.end, current_user)
        try:
            payload = _agent_observability_service().list_logs(
                app=app_model,
                params=AgentLogQueryParams(
                    page=query.page,
                    limit=query.limit,
                    keyword=query.keyword,
                    status=query.status,
                    source=query.source,
                    start=start,
                    end=end,
                ),
            )
        except ValueError as exc:
            abort(400, description=str(exc))
        return dump_response(AgentLogListResponse, payload)


@console_ns.route("/agent/<uuid:agent_id>/statistics/summary")
class AgentStatisticsSummaryApi(Resource):
    @console_ns.doc(params=query_params_from_model(AgentStatisticsQuery))
    @console_ns.response(
        200,
        "Agent monitoring summary and chart data",
        console_ns.models[AgentStatisticSummaryEnvelopeResponse.__name__],
    )
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_user
    @with_current_tenant_id
    def get(self, tenant_id: str, current_user: Account, agent_id: UUID):
        app_model = _resolve_agent_app_model(tenant_id=tenant_id, agent_id=agent_id)
        query = AgentStatisticsQuery.model_validate(request.args.to_dict(flat=True))
        timezone = current_user.timezone or "UTC"
        start, end = _parse_observability_time_range(query.start, query.end, current_user)
        try:
            payload = _agent_observability_service().get_statistics_summary(
                app=app_model,
                params=AgentStatisticsQueryParams(source=query.source, start=start, end=end, timezone=timezone),
            )
        except ValueError as exc:
            abort(400, description=str(exc))
        return dump_response(AgentStatisticSummaryEnvelopeResponse, payload)


@console_ns.route("/agent/<uuid:agent_id>/versions")
class AgentRosterVersionsApi(Resource):
    @console_ns.response(200, "Agent versions", console_ns.models[AgentConfigSnapshotListResponse.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_tenant_id
    def get(self, tenant_id: str, agent_id: UUID):
        return dump_response(
            AgentConfigSnapshotListResponse,
            {"data": _agent_roster_service().list_agent_versions(tenant_id=tenant_id, agent_id=str(agent_id))},
        )


@console_ns.route("/agent/<uuid:agent_id>/versions/<uuid:version_id>")
class AgentRosterVersionDetailApi(Resource):
    @console_ns.response(200, "Agent version detail", console_ns.models[AgentConfigSnapshotDetailResponse.__name__])
    @setup_required
    @login_required
    @account_initialization_required
    @with_current_tenant_id
    def get(self, tenant_id: str, agent_id: UUID, version_id: UUID):
        return dump_response(
            AgentConfigSnapshotDetailResponse,
            _agent_roster_service().get_agent_version_detail(
                tenant_id=tenant_id,
                agent_id=str(agent_id),
                version_id=str(version_id),
            ),
        )