from shiny import ui

# https://icons.getbootstrap.com/icons/question-circle-fill/
def question_circle_fill():
    ui.HTML(
    '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-question-circle-fill mb-1" viewBox="0 0 16 16"><path d="M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zM5.496 6.033h.825c.138 0 .248-.113.266-.25.09-.656.54-1.134 1.342-1.134.686 0 1.314.343 1.314 1.168 0 .635-.374.927-.965 1.371-.673.489-1.206 1.06-1.168 1.987l.003.217a.25.25 0 0 0 .25.246h.811a.25.25 0 0 0 .25-.25v-.105c0-.718.273-.927 1.01-1.486.609-.463 1.244-.977 1.244-2.056 0-1.511-1.276-2.241-2.673-2.241-1.267 0-2.655.59-2.75 2.286a.237.237 0 0 0 .241.247zm2.325 6.443c.61 0 1.029-.394 1.029-.927 0-.552-.42-.94-1.029-.94-.584 0-1.009.388-1.009.94 0 .533.425.927 1.01.927z"/></svg>'
    )

def background_img(url: str, opacity: float) -> str:
    """
    Generate CSS style for setting a somewhat transparent background image.
    
    Parameters
    ----------
    url : str
        URL of the image to be used as a background.
    opacity : float
        Opacity level of the background image (0.0 to 1.0).

    Returns
    -------
    str
        A CSS style string to set the somewhat transparent background image.
    """
    return f"""
    <style>
    body, html {{
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
    }}
    body::before {{
        content: "";
        position: fixed; /* Cover the entire page */
        left: 0;
        right: 0;
        z-index: -1; /* Ensure the image stays in the background */
        display: block;
        background-image: url('{url}');
        background-size: cover; /* Cover the entire page */
        background-position: center; /* Center the background image */
        opacity: {opacity}; /* Set the opacity for the image */
        width: 100%;
        height: 100%;
    }}
    </style>
    """