"""Tests du chainage produit finalize -> replay-session."""

from __future__ import annotations

import sys
from pathlib import Path

import pytest


_ROOT = str(Path(__file__).resolve().parents[2])
if _ROOT not in sys.path:
    sys.path.insert(0, _ROOT)


class TestFinalizeReplayChain:
    _TEST_API_TOKEN = "test_finalize_replay_chain_token_0123456789"

    @pytest.fixture(autouse=True)
    def _ensure_api_token(self, monkeypatch):
        monkeypatch.setenv("RPA_API_TOKEN", self._TEST_API_TOKEN)
        api_stream_mod = sys.modules.get("agent_v0.server_v1.api_stream")
        if api_stream_mod is not None:
            monkeypatch.setattr(api_stream_mod, "API_TOKEN", self._TEST_API_TOKEN)

    @pytest.fixture
    def client(self, tmp_path, monkeypatch):
        from fastapi.testclient import TestClient
        from agent_v0.server_v1 import api_stream
        from agent_v0.server_v1.stream_processor import StreamProcessor
        from agent_v0.server_v1.worker_stream import StreamWorker

        original_processor = api_stream.processor
        original_worker = api_stream.worker
        test_processor = StreamProcessor(data_dir=str(tmp_path))
        api_stream.processor = test_processor
        api_stream.worker = StreamWorker(
            live_dir=str(tmp_path),
            processor=test_processor,
        )
        monkeypatch.setattr(api_stream, "_enqueue_to_worker", lambda session_id: None)

        client = TestClient(api_stream.app, raise_server_exceptions=False)
        yield client, api_stream, test_processor, api_stream.API_TOKEN

        api_stream.processor = original_processor
        api_stream.worker = original_worker

    def test_finalize_exposes_replay_request_without_launch(self, client):
        c, _, proc, token = client
        proc.session_manager.register_session("sess_final_001", machine_id="pc-alpha")

        resp = c.post(
            "/api/v1/traces/stream/finalize",
            params={"session_id": "sess_final_001"},
            headers={"Authorization": f"Bearer {token}"},
        )

        assert resp.status_code == 200
        data = resp.json()
        assert data["status"] == "queued_for_processing"
        assert data["replay_ready"] is True
        assert data["replay_request"] == {
            "endpoint": "/api/v1/traces/stream/replay-session",
            "session_id": "sess_final_001",
            "machine_id": "pc-alpha",
        }
        assert "replay_launch" not in data

    def test_finalize_can_launch_replay_session(self, client, monkeypatch):
        c, api_stream, proc, token = client
        proc.session_manager.register_session("sess_final_002", machine_id="pc-beta")
        calls = []

        async def fake_replay_from_session(session_id: str, machine_id: str = "default"):
            calls.append((session_id, machine_id))
            return {
                "replay_id": "replay_sess_1234abcd",
                "status": "running",
                "source_session_id": session_id,
                "target_session_id": "agent_demo",
                "machine_id": machine_id,
                "total_actions": 7,
            }

        monkeypatch.setattr(api_stream, "replay_from_session", fake_replay_from_session)

        resp = c.post(
            "/api/v1/traces/stream/finalize",
            params={
                "session_id": "sess_final_002",
                "launch_replay": "true",
            },
            headers={"Authorization": f"Bearer {token}"},
        )

        assert resp.status_code == 200
        data = resp.json()
        assert calls == [("sess_final_002", "pc-beta")]
        assert data["replay_launch"]["status"] == "started"
        assert data["replay_launch"]["replay"]["replay_id"] == "replay_sess_1234abcd"
        assert data["replay_launch"]["replay"]["source_session_id"] == "sess_final_002"
        assert data["replay_launch"]["replay"]["machine_id"] == "pc-beta"

    def test_finalize_remains_successful_if_auto_replay_fails(self, client, monkeypatch):
        c, api_stream, proc, token = client
        proc.session_manager.register_session("sess_final_003", machine_id="pc-gamma")

        async def fake_replay_from_session(session_id: str, machine_id: str = "default"):
            raise api_stream.HTTPException(
                status_code=404,
                detail=f"Aucune session Agent V1 active sur {machine_id}",
            )

        monkeypatch.setattr(api_stream, "replay_from_session", fake_replay_from_session)

        resp = c.post(
            "/api/v1/traces/stream/finalize",
            params={
                "session_id": "sess_final_003",
                "launch_replay": "true",
            },
            headers={"Authorization": f"Bearer {token}"},
        )

        assert resp.status_code == 200
        data = resp.json()
        assert data["status"] == "queued_for_processing"
        assert data["replay_launch"] == {
            "status": "failed",
            "status_code": 404,
            "detail": "Aucune session Agent V1 active sur pc-gamma",
        }
        assert data["replay_request"]["machine_id"] == "pc-gamma"