from django.contrib.postgres.fields import ArrayField
from django.db import models

from core.enums import PermissionModule, PermissionValueType
from core.models.base import TimeStampedModel


class PermissionDef(TimeStampedModel):
    code = models.CharField(max_length=150, unique=True)
    module = models.CharField(max_length=50, choices=PermissionModule.choices)
    sub_module = models.CharField(max_length=50, blank=True, default="")
    group_name = models.CharField(max_length=100)
    name = models.CharField(max_length=200)
    description = models.TextField(blank=True, default="")
    value_type = models.CharField(max_length=20, choices=PermissionValueType.choices)
    scope_choices = models.JSONField(default=list, blank=True)
    integer_min = models.IntegerField(null=True, blank=True)
    integer_max = models.IntegerField(null=True, blank=True)
    default_value = models.JSONField(default=dict)
    max_allowed_categories = ArrayField(
        models.CharField(max_length=50),
        default=list,
        blank=True,
    )
    sort_order = models.PositiveIntegerField(default=0)
    is_active = models.BooleanField(default=True)
    is_deprecated = models.BooleanField(default=False)
    version = models.PositiveIntegerField(default=1)

    class Meta:
        db_table = "permission_defs"
        verbose_name = "权限定义"
        verbose_name_plural = "权限定义"
        indexes = [
            models.Index(
                fields=["module", "sub_module", "sort_order"],
                name="idx_perm_defs_module",
                condition=models.Q(is_active=True),
            ),
            models.Index(
                fields=["is_active"],
                name="idx_perm_defs_active",
                condition=models.Q(is_active=True),
            ),
        ]

    def __str__(self) -> str:
        return f"{self.code} ({self.value_type})"