import csv
from pathlib import Path

from src.config_loader import FaceLoggingSettings
from src.face_logger import FaceLogger
from src.models import FaceTrackState, HeadPoseResult


def test_face_logs_success_failure_bom_and_summary_deduplication(tmp_path: Path) -> None:
    logger = FaceLogger(FaceLoggingSettings(True, True, True, 1, str(tmp_path)), "exp", "20260101_000000")
    logger.open()
    success = HeadPoseResult(1, 1, "now", .1, True, True, 1.0, -2.0, 3.0, 468, None, .9)
    failure = HeadPoseResult(1, 2, "later", .2, False, False, None, None, None, 0, None, None, "face_not_detected")
    logger.write_results([success, failure])
    state = FaceTrackState(1, total_frames=2, face_detected_frames=1, pose_estimated_frames=1,
                           last_pitch=1.0, last_yaw=-2.0, last_roll=3.0, min_yaw=-2.0,
                           max_yaw=-2.0, yaw_sum=-2.0, last_result=failure, finalized=True)
    logger.write_summary(state)
    logger.write_summary(state)
    logger.close()
    logger.close()
    paths = list(tmp_path.glob("*.csv"))
    assert len(paths) == 2
    assert all(path.read_bytes().startswith(b"\xef\xbb\xbf") for path in paths)
    frame_path = next(path for path in paths if "frames" in path.name)
    with frame_path.open(encoding="utf-8-sig", newline="") as stream:
        rows = list(csv.DictReader(stream))
        assert len(rows) == 2 and rows[1]["failure_reason"] == "face_not_detected"
        assert "yaw" in rows[0]
    summary_path = next(path for path in paths if "summary" in path.name)
    with summary_path.open(encoding="utf-8-sig", newline="") as stream:
        assert len(list(csv.DictReader(stream))) == 1