import os
import sys

from fastapi.testclient import TestClient

PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
if PROJECT_ROOT not in sys.path:
    sys.path.insert(0, PROJECT_ROOT)

import main  # noqa: E402


def _make_test_client():
    # use test db
    main.db_path = os.path.join(PROJECT_ROOT, "test_focus_guard.db")
    # clean old file
    if os.path.exists(main.db_path):
        os.remove(main.db_path)
    return TestClient(main.app)


def test_start_session_returns_id():
    client = _make_test_client()
    with client:
        resp = client.post("/api/sessions/start")
        assert resp.status_code == 200
        data = resp.json()
        assert "session_id" in data
        assert isinstance(data["session_id"], int)
        assert data["session_id"] > 0


def test_end_session_after_start():
    client = _make_test_client()
    with client:
        # create session
        r_start = client.post("/api/sessions/start")
        session_id = r_start.json()["session_id"]

        # end session
        r_end = client.post("/api/sessions/end", json={"session_id": session_id})
        assert r_end.status_code == 200
        summary = r_end.json()
        assert summary["session_id"] == session_id
        assert "duration_seconds" in summary
        assert "focus_score" in summary


def test_get_sessions_list():
    client = _make_test_client()
    with client:
        r_start = client.post("/api/sessions/start")
        session_id = r_start.json()["session_id"]
        client.post("/api/sessions/end", json={"session_id": session_id})

        r_list = client.get("/api/sessions", params={"filter": "all", "limit": 10, "offset": 0})
        assert r_list.status_code == 200
        data = r_list.json()
        assert isinstance(data, list)
        if data:
            item = data[0]
            assert "id" in item
            assert "start_time" in item
            assert "focus_score" in item