"""Tests for the remind plugin."""

import importlib.util
import sys
from pathlib import Path

# plugins/ is not a Python package -- load the module from file path
_spec = importlib.util.spec_from_file_location(
    "plugins.remind", Path(__file__).resolve().parent.parent / "plugins" / "remind.py",
)
_mod = importlib.util.module_from_spec(_spec)
sys.modules[_spec.name] = _mod
_spec.loader.exec_module(_mod)

from plugins.remind import (  # noqa: E402
    _format_duration,
    _make_id,
    _parse_duration,
)


class TestParseDurationRawSeconds:
    def test_positive_integer(self):
        assert _parse_duration("60") == 60

    def test_zero_returns_none(self):
        assert _parse_duration("0") is None

    def test_negative_returns_none(self):
        assert _parse_duration("-5") is None

    def test_large_value(self):
        assert _parse_duration("86400") == 86400


class TestParseDurationSpecs:
    def test_minutes(self):
        assert _parse_duration("5m") == 300

    def test_hours_and_minutes(self):
        assert _parse_duration("1h30m") == 5400

    def test_days(self):
        assert _parse_duration("2d") == 172800

    def test_seconds_suffix(self):
        assert _parse_duration("90s") == 90

    def test_full_combo(self):
        assert _parse_duration("1d12h30m15s") == 131415


class TestParseDurationInvalid:
    def test_empty_string(self):
        assert _parse_duration("") is None

    def test_letters_only(self):
        assert _parse_duration("abc") is None

    def test_all_zeros(self):
        assert _parse_duration("0m0s") is None


class TestParseDurationEdgeCases:
    def test_uppercase_works(self):
        assert _parse_duration("5M") == 300

    def test_hours_with_zero_minutes(self):
        assert _parse_duration("1h0m") == 3600

    def test_all_zeros_except_one_second(self):
        assert _parse_duration("0d0h0m1s") == 1


class TestFormatDuration:
    def test_minutes_and_seconds(self):
        assert _format_duration(90) == "1m30s"

    def test_exact_hour(self):
        assert _format_duration(3600) == "1h"

    def test_exact_day(self):
        assert _format_duration(86400) == "1d"

    def test_zero(self):
        assert _format_duration(0) == "0s"

    def test_full_combo(self):
        assert _format_duration(90061) == "1d1h1m1s"

    def test_seconds_only(self):
        assert _format_duration(45) == "45s"


class TestMakeId:
    def test_returns_six_char_hex(self):
        rid = _make_id("user", "check oven")
        assert len(rid) == 6
        assert all(c in "0123456789abcdef" for c in rid)

    def test_different_inputs_differ(self):
        rid1 = _make_id("alice", "task one")
        rid2 = _make_id("bob", "task two")
        assert rid1 != rid2