import time
import pytest
from cpl.core.utils.cache import Cache


def test_set_and_get():
    cache = Cache()
    cache.set("key1", "value1")
    assert cache.get("key1") == "value1"
    cache.stop()


def test_get_missing_key_returns_none():
    cache = Cache()
    assert cache.get("nonexistent") is None
    cache.stop()


def test_has_existing_key():
    cache = Cache()
    cache.set("key", "val")
    assert cache.has("key") is True
    cache.stop()


def test_has_missing_key():
    cache = Cache()
    assert cache.has("missing") is False
    cache.stop()


def test_delete():
    cache = Cache()
    cache.set("key", "val")
    cache.delete("key")
    assert cache.get("key") is None
    assert cache.has("key") is False
    cache.stop()


def test_clear():
    cache = Cache()
    cache.set("a", 1)
    cache.set("b", 2)
    cache.clear()
    assert cache.get("a") is None
    assert cache.get("b") is None
    cache.stop()


def test_get_all():
    cache = Cache()
    cache.set("x", 10)
    cache.set("y", 20)
    values = cache.get_all()
    assert set(values) == {10, 20}
    cache.stop()


def test_get_all_empty():
    cache = Cache()
    assert cache.get_all() == []
    cache.stop()


def test_ttl_expiry():
    cache = Cache()
    cache.set("temp", "data", ttl=1)
    assert cache.get("temp") == "data"
    time.sleep(1.1)
    assert cache.get("temp") is None
    cache.stop()


def test_has_after_ttl_expiry():
    cache = Cache()
    cache.set("temp", "data", ttl=1)
    time.sleep(1.1)
    assert cache.has("temp") is False
    cache.stop()


def test_default_ttl():
    cache = Cache(default_ttl=1)
    cache.set("key", "value")
    assert cache.get("key") == "value"
    time.sleep(1.1)
    assert cache.get("key") is None
    cache.stop()


def test_per_key_ttl_overrides_default():
    cache = Cache(default_ttl=60)
    cache.set("short", "val", ttl=1)
    time.sleep(1.1)
    assert cache.get("short") is None
    cache.stop()


def test_get_all_excludes_expired():
    cache = Cache()
    cache.set("permanent", "keep")
    cache.set("temporary", "gone", ttl=1)
    time.sleep(1.1)
    values = cache.get_all()
    assert "keep" in values
    assert "gone" not in values
    cache.stop()


def test_overwrite_key():
    cache = Cache()
    cache.set("key", "old")
    cache.set("key", "new")
    assert cache.get("key") == "new"
    cache.stop()


def test_cleanup_removes_expired():
    cache = Cache(cleanup_interval=9999)
    cache.set("exp", "x", ttl=1)
    time.sleep(1.1)
    cache.cleanup()
    assert cache.get("exp") is None
    cache.stop()