import tortoise.fields

from .model import model
from .constants import constants

class field_generator:
    @staticmethod
    def id() -> tortoise.fields.IntField:
        return tortoise.fields.IntField(primary_key = True)

    @staticmethod
    def name() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 30)

    @staticmethod
    def password() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 256)

    @staticmethod
    def surname() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 30)

    @staticmethod
    def nick() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 20)

    @staticmethod
    def description() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 4096)
        
    @staticmethod
    def phone_number() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 15)

    @staticmethod
    def barcode() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 13)

    @staticmethod
    def email() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 30)

    @staticmethod
    def apikey() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 280)

    @staticmethod
    def secret() -> tortoise.fields.TextField:
        return tortoise.fields.TextField(max_lenght = 256)

    @staticmethod
    def permissions() -> tortoise.fields.BooleanField:
        return tortoise.fields.BooleanField()

    @staticmethod
    def stock() -> tortoise.fields.IntField:
        return tortoise.fields.IntField

    @staticmethod
    def __connected_names(target: type, field: str | None) -> [str, str]:
        if not issubclass(target, model):
            raise TypeError("Foreign key target is not child of model.")

        name = target.__name__
        model_name = model.Meta.app + "." + name
        related_name = constants.related_name(name, field)

        return model_name, related_name

    @classmethod
    def connected_many(
        cls, 
        target: type, 
        field: str | None = None
    ) -> tortoise.fields.ManyToManyField:
        model, related = cls.__connected_names(target, field)

        return tortoise.fields.ManyToManyField(
            model,
            related_name = related
        )

    @classmethod
    def connected_single(
        cls, 
        target: type,
        field: str | None = None
    ) -> tortoise.fields.ForeignKeyField:
        model, related = cls.__connected_names(target, field)

        return tortoise.fields.ForeignKeyField(
            model, 
            related_name = related
        )