"""
camcops_server/cc_modules/cc_pdf.py

===============================================================================

    Copyright (C) 2012, University of Cambridge, Department of Psychiatry.
    Created by Rudolf Cardinal (rnc1001@cam.ac.uk).

    This file is part of CamCOPS.

    CamCOPS is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    CamCOPS is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with CamCOPS. If not, see <https://www.gnu.org/licenses/>.

===============================================================================

**PDF functions.**

"""

# =============================================================================
# Imports
# =============================================================================

from typing import Any, Dict, TYPE_CHECKING

from cardinal_pythonlib.pdf import get_pdf_from_html

from camcops_server.cc_modules.cc_constants import (
    PDF_ENGINE,
    WKHTMLTOPDF_OPTIONS,
)

if TYPE_CHECKING:
    from camcops_server.cc_modules.cc_request import CamcopsRequest


# =============================================================================
# pdf_from_html
# =============================================================================


def pdf_from_html(
    req: "CamcopsRequest",
    html: str,
    header_html: str = None,
    footer_html: str = None,
    extra_wkhtmltopdf_options: Dict[str, Any] = None,
) -> bytes:
    """
    Create and return a PDF from the HTML provided.
    """
    extra_wkhtmltopdf_options = (
        extra_wkhtmltopdf_options or {}
    )  # type: Dict[str, Any]
    wkhtmltopdf_options = dict(
        WKHTMLTOPDF_OPTIONS, **extra_wkhtmltopdf_options
    )
    cfg = req.config
    return get_pdf_from_html(
        html,
        header_html=header_html,
        footer_html=footer_html,
        processor=PDF_ENGINE,
        wkhtmltopdf_filename=cfg.wkhtmltopdf_filename,
        wkhtmltopdf_options=wkhtmltopdf_options,
    )
