"""Tests for Step 3.4: agent_runner module.

Coverage:
  Unit:
    - _is_overdue      — cron schedule overdue detection
    - _extract_items_from_content — LLM extraction + JSON parsing + validation
    - _send_insert_to_client      — tool_call frame construction + timeout
    - run_local_agent             — end-to-end local agent happy path
    - run_local_agent             — device offline path
    - run_local_agent             — file-read timeout path
    - run_local_agent             — LLM extraction error path
    - run_cloud_agent             — stub returns error immediately
    - trigger_pending_runs        — skipped when config is client-owned
    - trigger_pending_runs        — non-overdue skipped
    - trigger_pending_runs        — device_id filter for local agents

    Integration:
        - POST /agents/can-create     — billing eligibility check
        - POST /agents/trigger        — creates run log + dispatches background task
"""

from __future__ import annotations

import asyncio
import json
import uuid
from datetime import datetime, timezone
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from app.core.agent_runner import (
    _extract_items_from_content,
    _is_overdue,
    _send_insert_to_client,
    run_cloud_agent,
    run_local_agent,
    trigger_pending_runs,
)
from app.core.device_manager import DeviceConnectionManager
from app.db import get_session
from app.main import app
from app.models import AgentRunLog, CloudAgentConfig, LocalAgentConfig
from tests.conftest import TEST_USER_IDS, auth_header

# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------

_FREE_UID = TEST_USER_IDS["free"]
_PRO_UID = TEST_USER_IDS["pro"]


def _make_local_config(user_id: str = _FREE_UID, device_id: str = "dev-001") -> LocalAgentConfig:
    return LocalAgentConfig(
        id=str(uuid.uuid4()),
        user_id=user_id,
        device_id=device_id,
        name="Test Local Agent",
        directory_paths=["/home/user/emails"],
        data_types=["tasks", "notes"],
        prompt_template="Extract tasks and notes from this document.",
        file_extensions=[".txt", ".eml"],
        schedule_cron="0 */6 * * *",
        enabled=True,
        last_run_at=None,
    )


def _make_cloud_config(user_id: str = _FREE_UID) -> CloudAgentConfig:
    return CloudAgentConfig(
        id=str(uuid.uuid4()),
        user_id=user_id,
        provider="gmail",
        name="Test Gmail Agent",
        data_types=["tasks"],
        prompt_template="Extract tasks from email.",
        schedule_cron="0 */6 * * *",
        enabled=True,
        last_run_at=None,
    )


def _make_run_log(agent_id: str, agent_type: str = "local", user_id: str = _FREE_UID) -> AgentRunLog:
    return AgentRunLog(
        id=str(uuid.uuid4()),
        agent_id=agent_id,
        agent_type=agent_type,
        user_id=user_id,
        status="running",
        started_at=datetime.now(timezone.utc),
    )


def _make_manager(user_id: str = _FREE_UID, device_id: str = "dev-001") -> DeviceConnectionManager:
    mgr = DeviceConnectionManager()
    ws = MagicMock()
    ws.send_text = AsyncMock()
    mgr.register(user_id, device_id, ws)
    return mgr


# ---------------------------------------------------------------------------
# _is_overdue
# ---------------------------------------------------------------------------

def test_is_overdue_never_run():
    """An agent that has never run is always overdue."""
    assert _is_overdue("0 */6 * * *", None) is True


def test_is_overdue_very_recently_run():
    """An agent that just ran is not overdue."""
    last = datetime.now(timezone.utc)
    assert _is_overdue("0 */6 * * *", last) is False


def test_is_overdue_long_ago():
    """An agent last run 2 days ago with a 6-hour schedule is overdue."""
    from datetime import timedelta
    last = datetime.now(timezone.utc) - timedelta(days=2)
    assert _is_overdue("0 */6 * * *", last) is True


def test_is_overdue_invalid_cron_returns_false():
    """Unparseable cron must not raise and should return False (fail-safe)."""
    assert _is_overdue("not a cron", None) is False


def test_is_overdue_naive_datetime():
    """Naive datetime objects are handled without raising."""
    from datetime import timedelta
    last = datetime.utcnow() - timedelta(days=1)  # naive
    # Should not raise.
    result = _is_overdue("0 */6 * * *", last)
    assert isinstance(result, bool)


# ---------------------------------------------------------------------------
# _extract_items_from_content
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_extract_items_happy_path():
    """LLM returns valid JSON array; items with allowed tables are returned."""
    mock_llm = MagicMock()
    mock_response = MagicMock()
    mock_response.content = json.dumps([
        {"table": "tasks", "data": {"title": "Buy milk", "priority": "high"}},
        {"table": "notes", "data": {"title": "Meeting recap", "content": "Discussed roadmap"}},
    ])
    mock_llm.ainvoke = AsyncMock(return_value=mock_response)

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        items = await _extract_items_from_content(
            "Extract tasks and notes.",
            "Email body: Buy milk urgently. Notes from meeting: discussed roadmap.",
            ["tasks", "notes"],
        )

    assert len(items) == 2
    assert items[0]["table"] == "tasks"
    assert items[0]["data"]["title"] == "Buy milk"
    assert items[1]["table"] == "notes"


@pytest.mark.asyncio
async def test_extract_items_strips_forbidden_fields():
    """Fields like id, createdAt, isAiSuggested must be stripped from extracted data."""
    mock_llm = MagicMock()
    mock_response = MagicMock()
    mock_response.content = json.dumps([
        {
            "table": "tasks",
            "data": {
                "title": "Review PR",
                "id": "should-be-removed",
                "createdAt": 99999,
                "isAiSuggested": 0,
                "isApproved": 1,
            },
        }
    ])
    mock_llm.ainvoke = AsyncMock(return_value=mock_response)

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        items = await _extract_items_from_content("Extract tasks.", "Review the PR.", ["tasks"])

    assert len(items) == 1
    data = items[0]["data"]
    assert "id" not in data
    assert "createdAt" not in data
    assert "isAiSuggested" not in data
    assert "isApproved" not in data
    assert data["title"] == "Review PR"


@pytest.mark.asyncio
async def test_extract_items_invalid_json_returns_empty():
    """LLM returning invalid JSON must return empty list without raising."""
    mock_llm = MagicMock()
    mock_response = MagicMock()
    mock_response.content = "Sorry, I cannot extract anything."
    mock_llm.ainvoke = AsyncMock(return_value=mock_response)

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        items = await _extract_items_from_content("Extract tasks.", "content", ["tasks"])

    assert items == []


@pytest.mark.asyncio
async def test_extract_items_disallowed_table_filtered():
    """Items whose table is not in data_types are discarded."""
    mock_llm = MagicMock()
    mock_response = MagicMock()
    mock_response.content = json.dumps([
        {"table": "tasks", "data": {"title": "Valid task"}},
        {"table": "projects", "data": {"name": "Should be filtered"}},
    ])
    mock_llm.ainvoke = AsyncMock(return_value=mock_response)

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        # Only "tasks" is in data_types — "projects" should be filtered.
        items = await _extract_items_from_content("Extract.", "content", ["tasks"])

    assert len(items) == 1
    assert items[0]["table"] == "tasks"


@pytest.mark.asyncio
async def test_extract_items_empty_data_types_returns_empty():
    """If no allowed data_types match, skip LLM call and return immediately."""
    mock_llm = MagicMock()
    mock_llm.ainvoke = AsyncMock()

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        items = await _extract_items_from_content("Extract.", "content", [])

    mock_llm.ainvoke.assert_not_called()
    assert items == []


@pytest.mark.asyncio
async def test_extract_items_llm_error_propagates():
    """LLM API errors propagate so the caller (run_local_agent) can record them."""
    mock_llm = MagicMock()
    mock_llm.ainvoke = AsyncMock(side_effect=RuntimeError("API unavailable"))

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm):
        with pytest.raises(RuntimeError, match="API unavailable"):
            await _extract_items_from_content("Extract tasks.", "content", ["tasks"])


# ---------------------------------------------------------------------------
# _send_insert_to_client
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_send_insert_to_client_happy_path():
    """Frame is sent with isAiSuggested/isApproved added; result is returned."""
    mgr = _make_manager()

    sent_payloads: list[dict] = []
    original_send = mgr.send_frame

    async def _capture_send(uid: str, frame: dict) -> None:
        sent_payloads.append(frame)
        # Immediately resolve the pending call with a success result.
        call_id = frame["id"]
        mgr.resolve_pending_call(uid, call_id, {"row": {"id": "new-id", "title": "Buy milk"}})

    mgr.send_frame = _capture_send  # type: ignore[method-assign]

    result = await _send_insert_to_client(
        _FREE_UID, "tasks", {"title": "Buy milk", "priority": "high"}, mgr
    )

    assert len(sent_payloads) == 1
    payload = sent_payloads[0]
    assert payload["action"] == "insert"
    assert payload["table"] == "tasks"
    assert payload["data"]["title"] == "Buy milk"
    assert payload["data"]["isAiSuggested"] == 1
    assert payload["data"]["isApproved"] == 0
    assert result["row"]["title"] == "Buy milk"


@pytest.mark.asyncio
async def test_send_insert_to_client_timeout():
    """asyncio.TimeoutError is raised when Electron does not respond."""
    mgr = _make_manager()

    async def _slow_send(uid: str, frame: dict) -> None:
        # Never resolve the pending call.
        pass

    mgr.send_frame = _slow_send  # type: ignore[method-assign]

    with patch("app.core.agent_runner._INSERT_TIMEOUT", 0.05):
        with pytest.raises(asyncio.TimeoutError):
            await _send_insert_to_client(_FREE_UID, "tasks", {"title": "X"}, mgr)


# ---------------------------------------------------------------------------
# run_local_agent
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_run_local_agent_device_offline():
    """run_local_agent marks run as error when device is offline."""
    config = _make_local_config()
    run_log = _make_run_log(config.id)
    mgr = DeviceConnectionManager()  # Empty — no device registered.

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_local_agent(_FREE_UID, config, run_log, mgr)

    mock_finalize.assert_called_once()
    _args, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert any("not connected" in e for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_local_agent_happy_path():
    """End-to-end: files received, LLM extracts one task, insert sent + ack'd."""
    config = _make_local_config()
    run_log = _make_run_log(config.id)
    mgr = _make_manager()

    # Build a fake agent_data frame (will be queued after send).
    file_frame = {
        "type": "agent_data",
        "run_id": run_log.id,
        "files": [{"path": "/email.eml", "content": "Urgent: fix the bug by Friday."}],
    }
    agent_complete_frame = None  # sentinel

    sent_frames: list[dict] = []

    async def _mock_send(uid: str, frame: dict) -> None:
        sent_frames.append(frame)
        if frame.get("type") == "agent_run":
            # Simulate Electron responding with file data then agent_complete.
            q = mgr.get_agent_data_queue(uid, frame["run_id"])
            await q.put(file_frame)
            await q.put(agent_complete_frame)
        elif frame.get("type") == "tool_call":
            # Resolve the pending insert immediately.
            mgr.resolve_pending_call(uid, frame["id"], {"row": {"id": "new-task", "title": "Fix the bug"}})

    mgr.send_frame = _mock_send  # type: ignore[method-assign]

    mock_llm = MagicMock()
    mock_response = MagicMock()
    mock_response.content = json.dumps([
        {"table": "tasks", "data": {"title": "Fix the bug", "priority": "high"}}
    ])
    mock_llm.ainvoke = AsyncMock(return_value=mock_response)

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm), \
         patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_local_agent(_FREE_UID, config, run_log, mgr)

    mock_finalize.assert_called_once()
    _args, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "success"
    assert kwargs["items_processed"] == 1
    assert kwargs["items_created"] == 1
    assert kwargs["errors"] == []
    assert kwargs["update_config_last_run"] is False

    # Verify agent_run frame was sent.
    agent_run_frames = [f for f in sent_frames if f.get("type") == "agent_run"]
    assert len(agent_run_frames) == 1
    assert agent_run_frames[0]["agent_id"] == config.id
    assert "paths" in agent_run_frames[0]["config"]

    # Verify insert frame was sent with AI flags.
    insert_frames = [f for f in sent_frames if f.get("type") == "tool_call"]
    assert len(insert_frames) == 1
    assert insert_frames[0]["data"]["isAiSuggested"] == 1
    assert insert_frames[0]["data"]["isApproved"] == 0


@pytest.mark.asyncio
async def test_run_local_agent_file_read_timeout():
    """run_local_agent marks run as partial/error when device stops sending files."""
    config = _make_local_config()
    run_log = _make_run_log(config.id)
    mgr = _make_manager()

    async def _mock_send(uid: str, frame: dict) -> None:
        # Don't put anything in the queue — simulate stalled device.
        pass

    mgr.send_frame = _mock_send  # type: ignore[method-assign]

    with patch("app.core.agent_runner._FILE_READ_TIMEOUT", 0.1), \
         patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_local_agent(_FREE_UID, config, run_log, mgr)

    mock_finalize.assert_called_once()
    _args, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"  # No items created, so error (not partial).
    assert any("timed out" in e.lower() for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_local_agent_llm_extraction_error():
    """LLM errors per-file are recorded; run continues for remaining files."""
    config = _make_local_config()
    run_log = _make_run_log(config.id)
    mgr = _make_manager()

    file_frame = {
        "type": "agent_data",
        "run_id": run_log.id,
        "files": [
            {"path": "/file1.eml", "content": "Email one."},
            {"path": "/file2.eml", "content": "Email two."},
        ],
    }

    async def _mock_send(uid: str, frame: dict) -> None:
        if frame.get("type") == "agent_run":
            q = mgr.get_agent_data_queue(uid, frame["run_id"])
            await q.put(file_frame)
            await q.put(None)  # agent_complete sentinel

    mgr.send_frame = _mock_send  # type: ignore[method-assign]

    mock_llm = MagicMock()
    mock_llm.ainvoke = AsyncMock(side_effect=RuntimeError("LLM boom"))

    with patch("app.core.agent_runner.get_llm", return_value=mock_llm), \
         patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_local_agent(_FREE_UID, config, run_log, mgr)

    _args, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert kwargs["items_processed"] == 2  # Both files attempted.
    assert kwargs["items_created"] == 0
    assert len(kwargs["errors"]) == 2  # One error per file.


# ---------------------------------------------------------------------------
# run_cloud_agent (stub)
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_run_cloud_agent_device_offline():
    """Cloud agent aborts immediately when no device is connected."""
    config = _make_cloud_config()
    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = DeviceConnectionManager()  # empty — no devices registered

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    mock_finalize.assert_called_once()
    _, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert any("device" in e.lower() or "connected" in e.lower() for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_cloud_agent_no_oauth_token():
    """Cloud agent errors when no OAuth token is stored."""
    config = _make_cloud_config()
    config.oauth_token_encrypted = None
    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = _make_manager()

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize:
        await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    _, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert any("oauth" in e.lower() or "token" in e.lower() for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_cloud_agent_token_decrypt_failure():
    """Cloud agent errors gracefully when the stored token cannot be decrypted."""
    config = _make_cloud_config()
    config.oauth_token_encrypted = "this-is-not-valid-fernet-ciphertext"
    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = _make_manager()

    from cryptography.fernet import Fernet as _Fernet
    valid_key = _Fernet.generate_key().decode()

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize, \
         patch("app.integrations.settings") as mock_settings:
        mock_settings.OAUTH_ENCRYPTION_KEY = valid_key
        await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    _, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert any("decrypt" in e.lower() for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_cloud_agent_happy_path_gmail():
    """Cloud agent happy path: Gmail fetch → LLM extraction → inserts → success."""
    from app.integrations import EmailMessage, encrypt_token
    from cryptography.fernet import Fernet as _Fernet

    fernet_key = _Fernet.generate_key().decode()
    credentials = {
        "token": "access_abc",
        "refresh_token": "refresh_xyz",
        "token_uri": "https://oauth2.googleapis.com/token",
        "client_id": "cid",
        "client_secret": "csec",
    }

    config = _make_cloud_config()
    config.provider = "gmail"
    config.prompt_template = "Extract tasks from this email."
    config.data_types = ["tasks"]

    with patch("app.integrations.settings") as ms:
        ms.OAUTH_ENCRYPTION_KEY = fernet_key
        config.oauth_token_encrypted = encrypt_token(credentials)

    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = _make_manager()

    sample_email = EmailMessage(
        id="msg001",
        subject="Action required",
        sender="boss@company.com",
        body_text="Please fix the bug by Friday.",
        date=datetime(2025, 6, 1, 10, 0, tzinfo=timezone.utc),
    )

    extracted_items = [{"table": "tasks", "data": {"title": "Fix the bug", "priority": "high"}}]

    with patch("app.integrations.settings") as mock_int_settings, \
         patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize, \
         patch("app.core.agent_runner._extract_items_from_content", new_callable=AsyncMock, return_value=extracted_items) as mock_extract, \
         patch("app.core.agent_runner._send_insert_to_client", new_callable=AsyncMock, return_value={"ok": True}) as mock_insert, \
         patch("app.core.agent_runner.async_session"):
        mock_int_settings.OAUTH_ENCRYPTION_KEY = fernet_key

        mock_gmail = AsyncMock()
        mock_gmail.fetch_messages = AsyncMock(return_value=[sample_email])
        mock_gmail.refreshed_credentials = None

        with patch("app.integrations.decrypt_token", return_value=credentials), \
             patch("app.integrations.get_provider", return_value=mock_gmail):
            await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    mock_extract.assert_called_once()
    mock_insert.assert_called_once()
    _, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "success"
    assert kwargs["items_processed"] == 1
    assert kwargs["items_created"] == 1
    assert kwargs["config_type"] == "cloud"


@pytest.mark.asyncio
async def test_run_cloud_agent_provider_fetch_error():
    """Cloud agent records error status when provider fetch raises RuntimeError."""
    credentials = {"token": "abc"}
    config = _make_cloud_config()
    config.oauth_token_encrypted = "some_encrypted_value"  # non-empty so decrypt step is reached
    config.prompt_template = "Extract tasks."
    config.data_types = ["tasks"]
    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = _make_manager()

    mock_provider = AsyncMock()
    mock_provider.fetch_messages = AsyncMock(side_effect=RuntimeError("API quota exceeded"))
    mock_provider.refreshed_credentials = None

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock) as mock_finalize, \
         patch("app.integrations.decrypt_token", return_value=credentials), \
         patch("app.integrations.get_provider", return_value=mock_provider), \
         patch("app.core.agent_runner.async_session"):
        await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    _, kwargs = mock_finalize.call_args
    assert kwargs["status"] == "error"
    assert any("quota" in e.lower() or "fetch" in e.lower() for e in kwargs["errors"])


@pytest.mark.asyncio
async def test_run_cloud_agent_refreshed_token_persisted():
    """When the provider refreshes its token, the new ciphertext is written to DB."""
    from app.integrations import encrypt_token
    from cryptography.fernet import Fernet as _Fernet

    fernet_key = _Fernet.generate_key().decode()
    credentials = {"token": "old_token", "refresh_token": "rt_old"}
    fresh_credentials = {"token": "new_token", "refresh_token": "rt_new"}

    config = _make_cloud_config()
    config.prompt_template = "Extract tasks."
    config.data_types = ["tasks"]

    with patch("app.integrations.settings") as ms:
        ms.OAUTH_ENCRYPTION_KEY = fernet_key
        config.oauth_token_encrypted = encrypt_token(credentials)

    run_log = _make_run_log(config.id, agent_type="cloud")
    mgr = _make_manager()

    mock_provider = AsyncMock()
    mock_provider.fetch_messages = AsyncMock(return_value=[])
    mock_provider.refreshed_credentials = fresh_credentials  # token was refreshed

    # Track DB writes via mock async_session.
    mock_cfg_row = MagicMock()
    mock_cfg_row.oauth_token_encrypted = None

    mock_db = AsyncMock()
    mock_db.__aenter__ = AsyncMock(return_value=mock_db)
    mock_db.__aexit__ = AsyncMock(return_value=False)
    mock_db.scalar_one_or_none = AsyncMock(return_value=mock_cfg_row)
    cfg_result = MagicMock()
    cfg_result.scalar_one_or_none.return_value = mock_cfg_row
    mock_db.execute = AsyncMock(return_value=cfg_result)
    mock_db.commit = AsyncMock()

    with patch("app.core.agent_runner._finalize_run", new_callable=AsyncMock), \
         patch("app.integrations.decrypt_token", return_value=credentials), \
         patch("app.integrations.get_provider", return_value=mock_provider), \
         patch("app.integrations.encrypt_token", return_value="new_encrypted") as mock_encrypt, \
         patch("app.core.agent_runner.async_session", return_value=mock_db), \
         patch("app.integrations.settings") as mock_int_settings:
        mock_int_settings.OAUTH_ENCRYPTION_KEY = fernet_key
        await run_cloud_agent(_FREE_UID, config, run_log, mgr)

    # The new encrypted token should have been written to the config row.
    mock_encrypt.assert_called_once_with(fresh_credentials)
    assert mock_cfg_row.oauth_token_encrypted == "new_encrypted"


@pytest.mark.asyncio
async def test_finalize_run_updates_cloud_config_last_run_at():
    """_finalize_run with config_type='cloud' updates CloudAgentConfig.last_run_at."""
    from app.core.agent_runner import _finalize_run

    run_log = _make_run_log(str(uuid.uuid4()), agent_type="cloud")
    run_log.id = str(uuid.uuid4())

    mock_cfg = MagicMock()
    mock_cfg.last_run_at = None

    cfg_result = MagicMock()
    cfg_result.scalar_one_or_none.return_value = mock_cfg

    mock_db = AsyncMock()
    mock_db.__aenter__ = AsyncMock(return_value=mock_db)
    mock_db.__aexit__ = AsyncMock(return_value=False)
    mock_db.merge = AsyncMock(return_value=run_log)
    mock_db.execute = AsyncMock(return_value=cfg_result)
    mock_db.commit = AsyncMock()

    config_id = str(uuid.uuid4())

    with patch("app.core.agent_runner.async_session", return_value=mock_db):
        await _finalize_run(
            run_log,
            status="success",
            update_config_last_run=True,
            config_id=config_id,
            config_type="cloud",
        )

    # CloudAgentConfig.last_run_at should have been set.
    assert mock_cfg.last_run_at is not None
    mock_db.commit.assert_called()


# ---------------------------------------------------------------------------
# trigger_pending_runs
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_trigger_pending_runs_no_overdue():
    """Pending-run scan is skipped because agent config is client-owned."""

    mgr = _make_manager()

    with patch("app.core.agent_runner.run_local_agent", new_callable=AsyncMock) as mock_run:
        await trigger_pending_runs(_FREE_UID, "dev-001", mgr)

    mock_run.assert_not_called()


@pytest.mark.asyncio
async def test_trigger_pending_runs_device_id_filter():
    """Device filtering is no longer backend-managed in pending runs."""

    mgr = _make_manager(device_id="dev-001")

    with patch("app.core.agent_runner.run_local_agent", new_callable=AsyncMock) as mock_run:
        await trigger_pending_runs(_FREE_UID, "dev-001", mgr)

    mock_run.assert_not_called()


@pytest.mark.asyncio
async def test_trigger_pending_runs_dispatches_overdue():
    """No pending runs are dispatched by backend after config deprecation."""

    mgr = _make_manager()

    with patch("app.core.agent_runner.run_local_agent", new_callable=AsyncMock) as mock_run:
        await trigger_pending_runs(_FREE_UID, "dev-001", mgr)

    mock_run.assert_not_called()


# ---------------------------------------------------------------------------
# Integration: POST /agents/can-create and /agents/trigger
# ---------------------------------------------------------------------------


@pytest.fixture(autouse=True)
def _override_db(db_session):
    """Route all get_session calls to the test SQLite session."""

    async def _gen():
        yield db_session

    app.dependency_overrides[get_session] = _gen
    yield
    app.dependency_overrides.pop(get_session, None)


@pytest.mark.asyncio
async def test_can_create_agent_allows_when_under_limit(client):
    """POST /agents/can-create returns allowed=True when under tier limit."""
    resp = client.post(
        "/api/v1/agents/can-create",
        json={"active_agents": 0},
        headers=auth_header("free"),
    )
    assert resp.status_code == 200
    body = resp.json()
    assert body["allowed"] is True
    assert body["tier"] == "free"
    assert body["active_agents"] == 0
    assert body["limit"] == 2


@pytest.mark.asyncio
async def test_can_create_agent_denies_when_at_limit(client):
    """POST /agents/can-create returns allowed=False at free-tier limit."""
    resp = client.post(
        "/api/v1/agents/can-create",
        json={"active_agents": 2},
        headers=auth_header("free"),
    )
    assert resp.status_code == 200
    body = resp.json()
    assert body["allowed"] is False
    assert body["limit"] == 2


@pytest.mark.asyncio
async def test_trigger_run_local_agent_creates_run_log(client, db_session):
    """POST /agents/trigger creates a local run log and dispatches background task."""
    dispatched: list[tuple[str, str]] = []

    async def _fake_run(user_id, cfg, run_log, device_mgr):
        dispatched.append((user_id, cfg.id))

    def _fake_create_task(coro):
        coro.close()
        return MagicMock()

    with patch("app.api.routes.agents.run_local_agent", new_callable=AsyncMock, side_effect=_fake_run), \
         patch("asyncio.create_task") as mock_create_task:
        mock_create_task.side_effect = _fake_create_task
        resp = client.post(
            "/api/v1/agents/trigger",
            json={
                "directory": "/home/user/docs",
                "what_to_extract": ["task", "note"],
                "batch_interval": "0 */6 * * *",
                "custom_agent_prompt": "Extract tasks and notes.",
                "active_agents": 0,
            },
            headers=auth_header("power"),
        )

    assert resp.status_code == 202
    data = resp.json()
    assert isinstance(data["agent_id"], str)
    assert data["agent_id"]
    assert data["status"] == "running"
    assert data["agent_type"] == "local"

    # Verify create_task was called (dispatching background run).
    mock_create_task.assert_called_once()