from pathlib import Path
from typing import Optional

from jinja2 import Environment, PackageLoader, select_autoescape

from ee.part import Part
from ee.tools import mk_parents
from ee.xml import types


class Message(object):
    def __init__(self, obj: Optional[str] = None, text: Optional[str] = None):
        self.object = obj
        self.text = text


def section_filter(s: str):
    return "{}\n{}".format(s, "=" * len(s)) if s else ""


def subsection_filter(s: str):
    return "{}\n{}".format(s, "-" * len(s)) if s else ""


def subsubsection_filter(s: str):
    return "{}\n{}".format(s, "~" * len(s)) if s else ""


def subsubsubsection_filter(s: str):
    return "{}\n{}".format(s, "." * len(s)) if s else ""


def first_ref_filter(part: Part) -> Optional[types.SchematicReference]:
    return part.get_only_schematic_reference()


def first_pn_filter(part: Part) -> Optional[types.PartNumber]:
    return part.get_only_mpn()


def first_spn_filter(part: Part) -> Optional[types.SupplierPartNumber]:
    return part.get_only_spn()


def save_report(package: str, template_name: str, out_file: Path, **kwargs):
    env = Environment(
        loader=PackageLoader(package, "templates"),
        autoescape=select_autoescape(["html", "xml"]),
    )
    env.filters["subsection"] = subsection_filter
    env.filters["subsubsection"] = subsubsection_filter
    env.filters["subsubsubsection"] = subsubsubsection_filter
    env.filters["first_ref"] = first_ref_filter
    env.filters["first_pn"] = first_pn_filter
    env.filters["first_spn"] = first_spn_filter

    mk_parents(out_file)
    with out_file.open("w") as f:
        template = env.get_template(template_name)
        f.write(template.render(**kwargs))