from __future__ import annotations

from typing import Any
from unittest.mock import AsyncMock

import pytest

from agent import completion


class _FakeThreads:
    def __init__(self, metadata: dict[str, Any]) -> None:
        self._metadata = metadata
        self.updates: list[dict[str, Any]] = []

    async def get(self, thread_id: str) -> dict[str, Any]:
        return {"thread_id": thread_id, "metadata": self._metadata}

    async def update(self, *, thread_id: str, metadata: dict[str, Any]) -> None:
        self.updates.append(metadata)


class _FakeClient:
    def __init__(self, metadata: dict[str, Any]) -> None:
        self.threads = _FakeThreads(metadata)


def _slack_metadata() -> dict[str, Any]:
    return {
        "source": "slack",
        "source_context": {"slack_thread": {"channel_id": "C1", "thread_ts": "123.45"}},
    }


@pytest.mark.asyncio
async def test_error_status_posts_slack_failure_reply(monkeypatch: pytest.MonkeyPatch) -> None:
    client = _FakeClient(_slack_metadata())
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)
    reply = AsyncMock(return_value=True)
    monkeypatch.setattr(completion, "post_slack_thread_reply", reply)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "error"})

    assert result["status"] == "ok"
    reply.assert_awaited_once()
    args = reply.await_args.args
    assert args[0] == "C1"
    assert args[1] == "123.45"
    assert client.threads.updates == [{"failure_reply_posted": True}]


@pytest.mark.asyncio
async def test_success_status_is_ignored(monkeypatch: pytest.MonkeyPatch) -> None:
    client = _FakeClient(_slack_metadata())
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)
    reply = AsyncMock(return_value=True)
    monkeypatch.setattr(completion, "post_slack_thread_reply", reply)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "success"})

    assert result["status"] == "ignored"
    reply.assert_not_called()


@pytest.mark.asyncio
async def test_idempotent_when_already_replied(monkeypatch: pytest.MonkeyPatch) -> None:
    metadata = _slack_metadata()
    metadata["failure_reply_posted"] = True
    client = _FakeClient(metadata)
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)
    reply = AsyncMock(return_value=True)
    monkeypatch.setattr(completion, "post_slack_thread_reply", reply)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "timeout"})

    assert result["status"] == "ignored"
    reply.assert_not_called()
    assert client.threads.updates == []


@pytest.mark.asyncio
async def test_linear_source_comments_on_issue(monkeypatch: pytest.MonkeyPatch) -> None:
    client = _FakeClient({"source": "linear", "source_context": {"linear_issue": {"id": "iss_1"}}})
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)
    comment = AsyncMock(return_value=True)
    monkeypatch.setattr(completion, "comment_on_linear_issue", comment)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "timeout"})

    assert result["status"] == "ok"
    comment.assert_awaited_once()
    assert comment.await_args.args[0] == "iss_1"


@pytest.mark.asyncio
async def test_missing_thread_id_is_ignored() -> None:
    result = await completion.handle_run_completion({"status": "error"})
    assert result["status"] == "ignored"


@pytest.mark.asyncio
async def test_no_reply_channel_does_not_flag(monkeypatch: pytest.MonkeyPatch) -> None:
    client = _FakeClient({"source": "schedule"})
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "error"})

    assert result["status"] == "ignored"
    assert client.threads.updates == []


@pytest.mark.asyncio
async def test_interrupted_status_is_ignored(monkeypatch: pytest.MonkeyPatch) -> None:
    # Follow-ups use multitask_strategy="interrupt", so an interrupted run is a
    # healthy hand-off, not a failure to report.
    client = _FakeClient(_slack_metadata())
    monkeypatch.setattr(completion, "langgraph_client", lambda: client)
    reply = AsyncMock(return_value=True)
    monkeypatch.setattr(completion, "post_slack_thread_reply", reply)

    result = await completion.handle_run_completion({"thread_id": "t1", "status": "interrupted"})

    assert result["status"] == "ignored"
    reply.assert_not_called()
    assert client.threads.updates == []


def test_verify_run_complete_token(monkeypatch: pytest.MonkeyPatch) -> None:
    # No secret configured: fail closed (reject everything).
    monkeypatch.setattr(completion, "RUN_COMPLETE_WEBHOOK_SECRET", None)
    assert completion.verify_run_complete_token(None) is False
    assert completion.verify_run_complete_token("whatever") is False

    # Secret configured: require an exact match.
    monkeypatch.setattr(completion, "RUN_COMPLETE_WEBHOOK_SECRET", "s3cret")
    assert completion.verify_run_complete_token("s3cret") is True
    assert completion.verify_run_complete_token("wrong") is False
    assert completion.verify_run_complete_token(None) is False