from pathlib import Path

import pytest

from app.config import get_settings


def test_defaults():
    s = get_settings()
    assert s.horizon_days == 548
    assert s.gui_user == "admin"


def test_env_file_defaults_to_container_mount_path(monkeypatch):
    monkeypatch.delenv("FB_ENV_FILE", raising=False)
    get_settings.cache_clear()
    try:
        assert get_settings().env_file == Path("/data/.env")
    finally:
        get_settings.cache_clear()


def test_env_file_overridable_via_env_var(monkeypatch, tmp_path):
    custom = tmp_path / "custom.env"
    monkeypatch.setenv("FB_ENV_FILE", str(custom))
    get_settings.cache_clear()
    try:
        assert get_settings().env_file == custom
    finally:
        get_settings.cache_clear()


def test_grafana_url_default(monkeypatch):
    monkeypatch.delenv("FB_GRAFANA_URL", raising=False)
    get_settings.cache_clear()
    try:
        assert get_settings().grafana_url == "http://localhost:3000"
    finally:
        get_settings.cache_clear()


def test_grafana_public_url_default(monkeypatch):
    monkeypatch.delenv("FB_GRAFANA_PUBLIC_URL", raising=False)
    get_settings.cache_clear()
    try:
        assert get_settings().grafana_public_url == ""
    finally:
        get_settings.cache_clear()


def test_grafana_public_url_from_env(monkeypatch):
    monkeypatch.setenv("FB_GRAFANA_PUBLIC_URL", "https://fb.example.de/grafana/")
    get_settings.cache_clear()
    try:
        assert get_settings().grafana_public_url == "https://fb.example.de/grafana/"
    finally:
        get_settings.cache_clear()


def test_session_cookie_secure_default_false(monkeypatch):
    monkeypatch.delenv("FB_SESSION_COOKIE_SECURE", raising=False)
    get_settings.cache_clear()
    try:
        assert get_settings().session_cookie_secure is False
    finally:
        get_settings.cache_clear()


@pytest.mark.parametrize("val,expected", [
    ("true", True), ("True", True), ("1", True), ("yes", True), ("on", True),
    ("false", False), ("0", False), ("", False), ("nope", False),
])
def test_session_cookie_secure_parsing(monkeypatch, val, expected):
    monkeypatch.setenv("FB_SESSION_COOKIE_SECURE", val)
    get_settings.cache_clear()
    try:
        assert get_settings().session_cookie_secure is expected
    finally:
        get_settings.cache_clear()