import re
from typing import Dict, Union
from model_data.BaseUtility import Definitions
from model_data.epc_attributes.attribute_utils import extract_thermal_transmittance, extract_component_types


class FloorAttributes(Definitions):
    DWELLING_BELOW = ["another dwelling below", "other premises below"]
    FLOOR_TYPES = ["assumed", "to unheated space", "to external air", "suspended", "solid"]

    # For the short term, while we are still exploring the data, we maintain a list of error cases which
    # we want to ignore and consider as no data.

    OBSERVED_ERRORS = ["Conservatory"]

    WELSH_TEXT = {
        "(anheddiad arall islaw)": "(another dwelling below)",
        "solet, dim inswleiddio (rhagdybiaeth)": "solid, no insulation (assumed)",
        "solet, dim inswleiddio": "solid, no insulation)",
        "crog, dim inswleiddio (rhagdybiaeth)": "suspended, no insulation (assumed)",
        "crog, dim inswleiddio": "suspended, no insulation",
        "(eiddo arall islaw)": "(other premises below)",
        "solet, inswleiddio cyfyngedig (rhagdybiaeth)": "solid, limited insulation (assumed)",
        "solet, inswleiddio cyfyngedig": "solid, limited insulation",
        "crog, wedigçöi inswleiddio (rhagdybiaeth)": "suspended, insulated (assumed)",
        "crog, wedigçöi inswleiddio": "suspended, insulated",
        "igçör awyr y tu allan, dim inswleiddio (rhagdybiaeth)": "to external air, no insulation (assumed)",
        "igçör awyr y tu allan, dim inswleiddio": "to external air, no insulation",
        "i ofod heb ei wresogi, wedigçöi inswleiddio (rhagdybiaeth)": "to unheated space, insulated (assumed)",
        "i ofod heb ei wresogi, wedigçöi inswleiddio": "to unheated space, insulated",
        "solet, wedigçöi inswleiddio (rhagdybiaeth)": "solid, insulated (assumed)",
        "solet, wedigçöi inswleiddio": "solid, insulated",
        "i ofod heb ei wresogi, dim inswleiddio (rhagdybiaeth)": "to unheated space, no insulation (assumed)",
        "i ofod heb ei wresogi, dim inswleiddio": "to unheated space, no insulation"
    }

    def __init__(self, description: str):
        self.description: str = description.lower()

        self.nodata = (not description) or (description in self.DATA_ANOMALY_MATCHES) or (
            description in self.OBSERVED_ERRORS)

        # Try and perform a translation, incase it's in welsh
        self.translate_welsh_text()

        if not self.nodata and not any(
            rt in self.description for rt in
            self.FLOOR_TYPES + self.DWELLING_BELOW + ["average thermal transmittance"]
        ):
            raise ValueError('Invalid description')

    def translate_welsh_text(self):

        uvalue_match = re.search(
            r'trawsyriannedd thermol cyfartalog (\d+(\.\d+)?)\s*w/m-¦k', self.description
        )

        # Step 2: Generalized translation with placeholder
        if uvalue_match:
            uvalue = uvalue_match.group(1)
            self.description = f"average thermal transmittance {uvalue} W/m-¦K"

        else:
            translation = self.WELSH_TEXT.get(self.description)
            if translation:
                self.nodata = False
                self.description = translation

    def process(self) -> Dict[str, Union[str, bool, int, None]]:

        if self.nodata:
            return {"no_data": True}

        result: Dict[str, Union[float, str, bool, None]] = {}
        description = self.description

        # thermal transmittance
        result, description = extract_thermal_transmittance(result, description)

        # floor type
        result, description = extract_component_types(result, description, list_of_components=self.FLOOR_TYPES)

        # check if there is another dwelling below
        result['another_property_below'] = "(another dwelling below)" in description or "(other premises below)" in \
                                           description

        thickness_map = {
            "external insulation": "average",
            "internal insulation": "average",
            "limited insulation": "below average",
            "partial insulation": "below average",
            "no insulation": "none",
            "additional insulation": "above average",
            "insulated": "average"
        }
        for key, value in thickness_map.items():
            if key in description:
                result['insulation_thickness'] = value
                break
        else:
            result['insulation_thickness'] = None

        return result