"""Tests for RunnerUpVerificationMixin in _runnerup_verification.py."""

from __future__ import annotations

import json
from typing import TYPE_CHECKING, Any
from unittest.mock import MagicMock, patch

from screen_locker.tests.conftest import create_locker

if TYPE_CHECKING:
    from pathlib import Path

# Minimal valid TCX XML for a 40-minute, 6-km run.
_TCX_RUNNING = """\
<?xml version="1.0" encoding="UTF-8"?>
<TrainingCenterDatabase
    xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2">
  <Activities>
    <Activity Sport="Running">
      <Lap>
        <TotalTimeSeconds>2400.0</TotalTimeSeconds>
        <DistanceMeters>6000.0</DistanceMeters>
      </Lap>
    </Activity>
  </Activities>
</TrainingCenterDatabase>
"""

# TCX with an unrecognised sport tag (not in RUNNERUP_ACCEPTED_SPORTS).
_TCX_GYM = """\
<?xml version="1.0" encoding="UTF-8"?>
<TrainingCenterDatabase
    xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2">
  <Activities>
    <Activity Sport="Gym">
      <Lap>
        <TotalTimeSeconds>3600.0</TotalTimeSeconds>
        <DistanceMeters>0.0</DistanceMeters>
      </Lap>
    </Activity>
  </Activities>
</TrainingCenterDatabase>
"""

# Two laps that together make a valid run.
_TCX_MULTI_LAP = """\
<?xml version="1.0" encoding="UTF-8"?>
<TrainingCenterDatabase
    xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2">
  <Activities>
    <Activity Sport="Running">
      <Lap>
        <TotalTimeSeconds>1200.0</TotalTimeSeconds>
        <DistanceMeters>3000.0</DistanceMeters>
      </Lap>
      <Lap>
        <TotalTimeSeconds>1200.0</TotalTimeSeconds>
        <DistanceMeters>3000.0</DistanceMeters>
      </Lap>
    </Activity>
  </Activities>
</TrainingCenterDatabase>
"""


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


def _write_tcx(tmp_path: Path, content: str, name: str = "activity.tcx") -> str:
    """Write TCX content to a temp file and return the path string."""
    p = tmp_path / name
    p.write_text(content)
    return str(p)


# ---------------------------------------------------------------------------
# _validate_runnerup_data
# ---------------------------------------------------------------------------



class TestScanAndFillWeekRunnerup:
    """Tests for _scan_and_fill_week_runnerup (lines 186-248)."""

    def test_returns_zero_when_no_phone(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """No ADB device → 0 filled."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=False))
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_returns_zero_when_all_days_already_logged(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """All days this week already have counted workouts → 0 new fills."""
        from datetime import date, timedelta

        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"

        # Fill Mon-today with phone_verified entries.
        today = date.today()
        monday = today - timedelta(days=today.weekday())
        logs: dict[str, Any] = {}
        cur = monday
        while cur <= today:
            logs[cur.strftime("%Y-%m-%d")] = {
                "workout_data": {"type": "phone_verified"}
            }
            cur += timedelta(days=1)
        log_file.write_text(json.dumps(logs))

        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker, "_find_runnerup_exports_for_date", MagicMock(return_value=[])
        )
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_fills_gap_for_unlogged_day(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """Gap in log + exports found + validated → entry written, count > 0."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")

        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=["/sdcard/run.tcx"]),
        )
        object.__setattr__(
            locker,
            "_pull_and_parse_tcx",
            MagicMock(
                return_value={"sport": 0, "duration_seconds": 2400, "distance_m": 6000}
            ),
        )
        object.__setattr__(
            locker,
            "_validate_runnerup_data",
            MagicMock(return_value=("verified", "Running: 6.0 km in 40 min")),
        )

        with patch(
            "screen_locker._runnerup_verification.compute_entry_hmac",
            return_value="sig",
        ):
            result = locker._scan_and_fill_week_runnerup(log_file)

        assert result > 0
        logs = json.loads(log_file.read_text())
        # At least one date should have been filled.
        types = [
            v.get("workout_data", {}).get("type")
            for v in logs.values()
            if isinstance(v, dict)
        ]
        assert "runnerup_verified" in types

    def test_skips_date_when_no_exports(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """No exports for a date → date skipped, count stays 0."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=[]),
        )
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_skips_unreadable_tcx(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """_pull_and_parse_tcx returns None → remote skipped, not filled."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=["/sdcard/run.tcx"]),
        )
        object.__setattr__(locker, "_pull_and_parse_tcx", MagicMock(return_value=None))
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_skips_not_verified_export(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """_validate_runnerup_data returns not-verified → date not filled."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=["/sdcard/run.tcx"]),
        )
        object.__setattr__(
            locker,
            "_pull_and_parse_tcx",
            MagicMock(
                return_value={"sport": 0, "duration_seconds": 60, "distance_m": 6000}
            ),
        )
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_returns_zero_on_write_error(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """OSError writing log after fill → returns 0 (lines 241-246)."""
        locker = create_locker(mock_tk, tmp_path)

        # Can't patch PosixPath.open (read-only slot), so wrap it in a
        # tiny class that delegates reads but raises on writes.
        real_log = tmp_path / "log.json"
        real_log.write_text("{}")

        class _FailWrite:
            def open(self, mode: str = "r", **kw):
                if mode == "w":
                    msg = "disk full"
                    raise OSError(msg)
                return real_log.open(mode, **kw)

        fail_log = _FailWrite()

        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=["/sdcard/run.tcx"]),
        )
        object.__setattr__(
            locker,
            "_pull_and_parse_tcx",
            MagicMock(
                return_value={"sport": 0, "duration_seconds": 2400, "distance_m": 6000}
            ),
        )
        object.__setattr__(
            locker,
            "_validate_runnerup_data",
            MagicMock(return_value=("verified", "ok")),
        )

        with patch(
            "screen_locker._runnerup_verification.compute_entry_hmac",
            return_value="sig",
        ):
            result = locker._scan_and_fill_week_runnerup(fail_log)

        assert result == 0

    def test_handles_corrupt_log_file(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """Corrupt log JSON → starts with empty dict, still works."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("not-json")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=[]),
        )
        # Should not raise; returns 0 (no exports found).
        assert locker._scan_and_fill_week_runnerup(log_file) == 0

    def test_hmac_none_still_fills_entry(
        self,
        mock_tk: MagicMock,
        mock_sys_exit: MagicMock,
        tmp_path: Path,
    ) -> None:
        """HMAC key absent (compute_entry_hmac returns None) → entry still written."""
        locker = create_locker(mock_tk, tmp_path)
        log_file = tmp_path / "log.json"
        log_file.write_text("{}")
        object.__setattr__(locker, "_has_adb_device", MagicMock(return_value=True))
        object.__setattr__(
            locker,
            "_find_runnerup_exports_for_date",
            MagicMock(return_value=["/sdcard/run.tcx"]),
        )
        object.__setattr__(
            locker,
            "_pull_and_parse_tcx",
            MagicMock(
                return_value={"sport": 0, "duration_seconds": 2400, "distance_m": 6000}
            ),
        )
        object.__setattr__(
            locker,
            "_validate_runnerup_data",
            MagicMock(return_value=("verified", "Running: 6.0 km in 40 min")),
        )

        with patch(
            "screen_locker._runnerup_verification.compute_entry_hmac",
            return_value=None,
        ):
            result = locker._scan_and_fill_week_runnerup(log_file)

        assert result > 0
        # No "hmac" key when signature is None.
        logs = json.loads(log_file.read_text())
        for entry in logs.values():
            assert "hmac" not in entry


# ---------------------------------------------------------------------------
# _find_runnerup_package
# ---------------------------------------------------------------------------