import asyncio
from uuid import uuid4

import httpx
import pytest
from sqlalchemy import delete, select, update

from app.api.dependencies.auth import build_request_context
from app.core.contracts import AgentRequest, AgentResult, CoreResult, RequestContext
from app.core.errors import RunLeaseLostError
from app.infrastructure.db import SessionFactory
from app.main import create_app
from app.model.audit import InteractionAudit
from app.model.conversation import ConversationMessage
from app.model.platform import AgentRun, DomainEventOutbox, OutboxDelivery, RequestIdempotency
from app.service.agent_persistence_service import AgentPersistenceService
from app.service.agent_run_application_service import AgentRunApplicationService
from app.worker.runtime import WorkerRuntime


@pytest.mark.integration
@pytest.mark.parametrize("revoked", [False, True])
async def test_http_accept_worker_commit_query_and_repeat(acceptance_registry, revoked):
    context = RequestContext(user_id="1", trace_id=str(uuid4()), roles=("customer",),
                             permissions=("agent:run",))
    app = create_app()
    app.dependency_overrides[build_request_context] = lambda: context
    session_id = f"runtime-{uuid4()}"
    run_id = None

    async def identity(value):
        return context if not revoked else value

    runtime = WorkerRuntime(acceptance_registry, resolve_identity=identity)
    async with httpx.AsyncClient(transport=httpx.ASGITransport(app=app),
                                base_url="http://test") as client:
        try:
            # 消息必须命中显式记忆信号：P2 之后触发判定改为事件/事实驱动，
            # 无信号的普通消息不再产生 memory.extraction_requested，而下方断言依赖该事件。
            response = await client.post("/api/v1/agent-runs", json={
                "agent_type": "customer_service",
                "message": "hello runtime，我的风险偏好是稳健型",
                "session_id": session_id, "idempotency_key": str(uuid4()),
            })
            assert response.status_code == 202
            # 文档 §3.3 + §19：成功响应统一为 {data, meta} 信封。
            run_id = response.json()["data"]["run_id"]
            assert await runtime.dispatch_one(run_id=run_id)
            assert not await runtime.dispatch_one(run_id=run_id)
            await asyncio.gather(runtime.execute(run_id), runtime.execute(run_id))
            result = (await client.get(f"/api/v1/agent-runs/{run_id}")).json()["data"]
            assert result["status"] == ("failed" if revoked else "succeeded")
            if not revoked:
                assert result["result"]["content"] == "test result"
            assert not await runtime.execute(run_id)
            async with SessionFactory() as session:
                messages = list(await session.scalars(select(ConversationMessage).where(
                    ConversationMessage.session_id == session_id,
                    ConversationMessage.role == "assistant")))
                assert len(messages) == (0 if revoked else 1)
                events = list(await session.scalars(select(DomainEventOutbox).where(
                    DomainEventOutbox.aggregate_id == run_id,
                    DomainEventOutbox.event_type == "memory.extraction_requested")))
                assert len(events) == (0 if revoked else 1)
        finally:
            await cleanup(session_id, run_id)


async def test_expired_worker_cannot_commit(acceptance_registry):
    context = RequestContext(user_id="1", trace_id=str(uuid4()), roles=("customer",),
                             permissions=("agent:run",))
    request = AgentRequest(agent_type="customer_service", message="fence test",
                           session_id=f"fence-{uuid4()}", idempotency_key=str(uuid4()))
    async with SessionFactory() as session:
        accepted = await AgentRunApplicationService(session, acceptance_registry).accept(
            request, context)
    try:
        async with SessionFactory() as session, session.begin():
            await session.execute(update(AgentRun).where(AgentRun.run_id == accepted.run_id)
                                  .values(status="running", worker_id="new-owner"))
        async with SessionFactory() as session:
            with pytest.raises(RunLeaseLostError):
                await AgentPersistenceService(session).complete_run(
                    accepted.run_id, AgentResult(run_id=accepted.run_id,
                                                 result=CoreResult(text="stale")),
                    worker_id="old-owner")
        async with SessionFactory() as session:
            assert await session.scalar(select(ConversationMessage.id).where(
                ConversationMessage.session_id == request.session_id,
                ConversationMessage.role == "assistant")) is None
    finally:
        await cleanup(request.session_id, accepted.run_id)


async def cleanup(session_id, run_id):
    async with SessionFactory() as session, session.begin():
        event_ids = select(DomainEventOutbox.event_id).where(
            DomainEventOutbox.aggregate_id == run_id)
        await session.execute(delete(OutboxDelivery).where(OutboxDelivery.event_id.in_(event_ids)))
        await session.execute(delete(DomainEventOutbox).where(
            DomainEventOutbox.aggregate_id == run_id))
        await session.execute(delete(InteractionAudit).where(
            InteractionAudit.session_id == session_id))
        await session.execute(delete(AgentRun).where(AgentRun.session_id == session_id))
        await session.execute(delete(RequestIdempotency).where(
            RequestIdempotency.session_id == session_id))
        await session.execute(delete(ConversationMessage).where(
            ConversationMessage.session_id == session_id))