from __future__ import annotations

import os
from types import SimpleNamespace

import pytest
import pytest_asyncio
from fastapi import FastAPI
from httpx import ASGITransport, AsyncClient
from sqlalchemy import JSON
from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine

os.environ["DATABASE_URL"] = "postgresql+asyncpg://tester:tester@localhost:5432/pmflow_test"

from app.api.ai_steward_api import routes_mounted_ai
from app.core.database import get_db
from app.dependencies.auth import get_current_user
from app.dependencies.tenant import get_tenant_id
from app.models.base import Base
from app.models.mounted_ai_runtime import (
    MountedAgentTrace,
    MountedConversationRun,
    MountedDraftWorkspace,
    MountedTopicWorkspace,
)


def _use_sqlite_json_types() -> None:
    for table in (
        MountedTopicWorkspace.__table__,
        MountedDraftWorkspace.__table__,
        MountedConversationRun.__table__,
        MountedAgentTrace.__table__,
    ):
        for column in table.columns:
            if column.name in {
                "facts_json",
                "goals_json",
                "constraints_json",
                "options_json",
                "open_questions",
                "pending_actions",
                "bound_entities",
                "metadata_json",
                "requirement_card",
                "draft_payload",
                "required_confirmations",
                "context_layers_hit",
                "tool_calls",
                "execution_outcome",
                "input_summary",
                "output_summary",
                "tool_trace",
            }:
                column.type = JSON()


@pytest_asyncio.fixture
async def db_session():
    engine = create_async_engine("sqlite+aiosqlite:///:memory:")
    _use_sqlite_json_types()
    async with engine.begin() as conn:
        await conn.run_sync(
            lambda sync_conn: Base.metadata.create_all(
                sync_conn,
                tables=[
                    MountedTopicWorkspace.__table__,
                    MountedDraftWorkspace.__table__,
                    MountedConversationRun.__table__,
                    MountedAgentTrace.__table__,
                ],
            )
        )
    maker = async_sessionmaker(engine, expire_on_commit=False)
    async with maker() as session:
        yield session
    await engine.dispose()


def _build_app(db_session):
    app = FastAPI()
    app.include_router(routes_mounted_ai.router)

    async def _fake_get_db():
        yield db_session

    app.dependency_overrides[get_db] = _fake_get_db
    app.dependency_overrides[get_tenant_id] = lambda: 1
    app.dependency_overrides[get_current_user] = lambda: SimpleNamespace(
        id=9001,
        tenant_id=1,
        role="ADMIN",
        name="管理员",
        username="admin",
    )
    return app


@pytest.mark.asyncio
async def test_mounted_runtime_run_detail_exposes_semantic_shadow_fields(db_session) -> None:
    topic = MountedTopicWorkspace(
        tenant_id=1,
        topic_key="feishu:chat_1:root:om_root_1",
        source_system="feishu",
        channel_ref="chat_1",
        thread_key="thread_1",
        mode="plan",
        status="active",
        plan_status="collecting",
        facts_json={"title": "语义上下文迁移"},
        open_questions=["是否切新 topic"],
        metadata_json={"last_message_preview": "这次继续统一语义入口"},
    )
    db_session.add(topic)
    await db_session.flush()

    draft = MountedDraftWorkspace(
        tenant_id=1,
        topic_workspace_id=int(topic.id),
        state="collecting",
        draft_version=3,
        requirement_card={"goal": "统一语义入口"},
        draft_payload={"draft_text": "先做 shadow mode"},
        required_confirmations=["需求草稿需要人工确认后才允许正式创建"],
    )
    db_session.add(draft)
    await db_session.flush()

    run = MountedConversationRun(
        tenant_id=1,
        trace_id="mounted:feishu:semantic-detail",
        topic_workspace_id=int(topic.id),
        source_system="feishu",
        source_message_id="om_message_1",
        mode_before="plan",
        mode_after="plan",
        active_agent="ConversationOrchestrator",
        status="completed",
        trigger_reason="shadow",
        context_layers_hit={"topic": True, "thread": True},
        execution_outcome={
            "source_message_preview": "这轮继续按 OpenCow 风格整理语义上下文",
            "semantic_packet_summary": {"packet_version": "v1", "recent_turn_count": 2},
            "semantic_decision": {"topic_relation": "continue_current_topic", "mode_decision": "stay_plan"},
            "semantic_gate_result": {"accepted": True, "next_plan_status": "collecting"},
            "semantic_diff": {"changed": True, "legacy_route": "query.answer"},
        },
        final_reply="我先把上下文整理出来。",
    )
    db_session.add(run)
    await db_session.commit()

    app = _build_app(db_session)
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        resp = await client.get(f"/ai-steward/mounted-ai/runs/{run.id}")

    assert resp.status_code == 200
    payload = resp.json()["data"]
    assert payload["semantic_packet_summary"]["packet_version"] == "v1"
    assert payload["semantic_decision"]["mode_decision"] == "stay_plan"
    assert payload["semantic_gate_result"]["accepted"] is True
    assert payload["semantic_diff"]["legacy_route"] == "query.answer"
    assert payload["topic"]["topic_key"] == "feishu:chat_1:root:om_root_1"
    assert payload["draft"]["draft_version"] == 3