from enum import Enum
from typing import Any

from django.db.models import (
    BooleanField,
    CharField,
    FloatField,
    IntegerField,
    QuerySet,
    TextField,
)
from django.http import HttpRequest

from common.components import *
from common.utils import get_field, get_model_by_string

filter_param_prefix = "f_"


class Modifier(Enum):
    EQUALS = "__exact"
    GT = "__gt"
    LT = "__lt"
    CONTAINS = "__contains"
    REGEX = "__regex"
    ISNULL = "__isnull"
    BETWEEN = "__gt", "__lt"


def create_filter_form(model: str, fields: list[str]):
    filter_model = get_model_by_string("games", model)
    automatic_filter_form_parts = []
    for field in fields:
        html_field_name = f"{filter_param_prefix}{field}"
        match get_field(filter_model, field):
            case BooleanField():
                automatic_filter_form_parts.append(
                    BooleanRadioFieldset(name=html_field_name, label=field)
                )
            case TextField():
                pass
            case CharField():
                js = str
                onclick_handler: js = """f_price_currency.disabled = true;"""
                automatic_filter_form_parts.extend(
                    [
                        RadioFieldset(
                            name=f"{field}_switch",
                            label="Modifier",
                            radio_buttons=[
                                {
                                    "label": "Equals",
                                    "value": Modifier.EQUALS.value,
                                    "onclick": onclick_handler,
                                },
                                {"label": "Contains", "value": Modifier.CONTAINS.value},
                            ],
                        ),
                        Input(
                            label=field,
                            id=html_field_name,
                            attributes=[
                                ("name", html_field_name + str(Modifier.EQUALS.value))
                            ],
                        ),
                    ]
                )
            case IntegerField():
                pass
            case FloatField():
                html = Input(
                    label=field,
                    type="number",
                    id=html_field_name,
                    attributes=[("name", html_field_name)],
                )
                automatic_filter_form_parts.append(html)
            case _:
                print(f"Field type of {field} not handled yet.")
    automatic_filter_form = Form(
        children=[*automatic_filter_form_parts, SubmitButton("Apply")]
    )
    return automatic_filter_form


def apply_filters(request: HttpRequest, queryset: QuerySet[Any]):
    for parameter in request.GET:
        if parameter.startswith(filter_param_prefix):
            field_name = parameter.removeprefix(filter_param_prefix)
            field_value = request.GET.get(parameter)
            if field_value == "":
                continue
            match field_value:
                case "true":
                    field_value = True
                case "false":
                    field_value = False
                case _:
                    pass
            queryset = queryset.filter(**{f"{field_name}": field_value})
    return queryset