from django.db import models
from django.utils.translation import gettext_lazy as _

from core.utils.base_model import UUIDPrimaryKeyBaseModel
from core.apps.contracts.validators.contracts import (
    ContractValidator, 
    name_validator
)


class ContractModel(UUIDPrimaryKeyBaseModel):

    name = models.CharField(
        _("name"),
        validators=[
            name_validator, 
        ], 
        max_length=255
    )
    
    identifier = models.CharField(
        _("Identifier"), 
        null=False, 
        blank=False
    )

    allow_add_files = models.BooleanField(default=False)
    allow_delete_files = models.BooleanField(default=False)

    @property
    def file_permissions(self) -> str:
        permissions: list[str] = []

        if self.allow_add_files:
            permissions.append("add")
        if self.allow_delete_files:
            permissions.append("delete")
        
        if len(permissions) == 2:
            return "All"
        
        return ", ".join(permission.capitalize() for permission in permissions)

    def __str__(self):
        return self.name

    @classmethod
    def _create_fake(cls):
        return cls.objects.create(
            name="mock",
        )
    
    def clean(self) -> None:
        super().clean()

        validator = ContractValidator(self)
        validator()

    class Meta:  # type: ignore
        db_table = "contracts"

        verbose_name = _("Contract")
        verbose_name_plural = _("Contracts")

        indexes = [
            models.Index(
                fields=["name"],
                name="contracts_name_inx"
            )
        ]