# tests/test_main.py

import pytest
from datetime import datetime
import main


def test_date_string_formatting():
    # March 19, 2026 is a Thursday (weekday index 3)
    dt = datetime(2026, 3, 19, 14, 5)
    date_line, time_line = main.date_string(dt)

    # Verify the translation dictionaries work properly
    assert date_line == "Torsdag, 19 mars 2026"
    assert time_line == "14:05"  # Ensure the leading zero logic works


def test_is_network_up_success(mocker):
    # Create a fake ping object that says the internet is alive
    mock_host = mocker.MagicMock()
    mock_host.is_alive = True

    # Intercept the `_ping` function in main.py
    mocker.patch("main._ping", return_value=mock_host)

    assert main.is_network_up() is True


def test_is_network_up_failure(mocker):
    # Simulate the ping throwing an exception (e.g., DNS failure or cable unplugged)
    mocker.patch("main._ping", side_effect=Exception("Network down"))

    # Assert our function catches it and safely returns False
    assert main.is_network_up() is False


def test_update_orchestration(mocker):
    # We want to test the update() function without making real web requests or drawing to the screen.
    # So, we "mock" (fake) the inner components.
    mocker.patch("main.weather.get", return_value={"temperature": 20.0})
    mock_mqtt = mocker.patch("main.mqtt.send")
    mock_make_image = mocker.patch(
        "main.display.image.make_image", return_value="dummy_image_object"
    )
    mock_refresh = mocker.patch("main.display.refresh")

    # Run the function
    main.update(first=True)

    # Verify that the orchestrator passed the data perfectly down the chain!
    mock_mqtt.assert_called_once_with({"temperature": 20.0})
    mock_make_image.assert_called_once()
    mock_refresh.assert_called_once()