"""Тесты хранилища настроек администратора (ссылка, интервал)."""

import json

import pytest

from schedule import ScheduleError
from schedule.settings import (
    DEFAULT_INTERVAL_MINUTES,
    SettingsStore,
    clamp_interval,
    interval_from_env,
)


def test_defaults():
    store = SettingsStore()
    assert store.link == ""
    assert store.interval_minutes == DEFAULT_INTERVAL_MINUTES


def test_persist_and_reload(tmp_path):
    path = tmp_path / "settings.json"
    store = SettingsStore(link="l1", interval_minutes=20, path=path)
    store.set_link("l2")
    store.set_interval_minutes(45)

    again = SettingsStore(link="из-окружения", interval_minutes=1, path=path)
    assert again.link == "l2"
    assert again.interval_minutes == 45


def test_file_overrides_env(tmp_path):
    path = tmp_path / "settings.json"
    path.write_text(json.dumps({"link": "из-файла", "interval_minutes": 5}), encoding="utf-8")
    store = SettingsStore(link="из-окружения", interval_minutes=99, path=path)
    assert store.link == "из-файла"
    assert store.interval_minutes == 5


def test_interval_validation():
    store = SettingsStore()
    for bad in (0, 1441, -5, "abc"):
        with pytest.raises(ScheduleError):
            store.set_interval_minutes(bad)
    assert store.set_interval_minutes("30") == 30


def test_empty_link_rejected():
    store = SettingsStore()
    with pytest.raises(ScheduleError):
        store.set_link("   ")
    with pytest.raises(ScheduleError):
        store.set_link("")


def test_corrupt_file_is_tolerated(tmp_path):
    path = tmp_path / "settings.json"
    path.write_text("{это не json", encoding="utf-8")
    store = SettingsStore(link="env-link", interval_minutes=7, path=path)
    assert store.link == "env-link"
    assert store.interval_minutes == 7


def test_no_path_keeps_settings_in_memory():
    store = SettingsStore(link="l", interval_minutes=3)
    assert store.set_interval_minutes(10) == 10
    assert store.interval_minutes == 10
    assert store.set_link("l2") == "l2"
    assert store.link == "l2"


def test_unwritable_path_does_not_crash(tmp_path):
    blocker = tmp_path / "blocker"
    blocker.write_text("x", encoding="utf-8")
    store = SettingsStore(link="l", interval_minutes=3, path=blocker / "settings.json")
    assert store.set_interval_minutes(10) == 10
    assert store.interval_minutes == 10


def test_clamp_interval():
    assert clamp_interval(0) == 1
    assert clamp_interval(99999) == 1440
    assert clamp_interval(30) == 30


def test_interval_from_env(monkeypatch):
    monkeypatch.delenv("SCHEDULE_INTERVAL_MINUTES", raising=False)
    monkeypatch.delenv("SCHEDULE_CACHE_TTL", raising=False)
    assert interval_from_env() == DEFAULT_INTERVAL_MINUTES

    # старый SCHEDULE_CACHE_TTL (в секундах) продолжает работать
    monkeypatch.setenv("SCHEDULE_CACHE_TTL", "900")
    assert interval_from_env() == 15

    monkeypatch.setenv("SCHEDULE_INTERVAL_MINUTES", "7")
    assert interval_from_env() == 7