from django.db import models
from django_choices_field import TextChoicesField
from core.models.enums import ServiceChoices
from core.models.base import BaseModel
from core.models.account import AccountAddress
from core.models.profile import TeamProfile


class Service(BaseModel):
    """Service records for accounts"""
    account = models.ForeignKey('Account', on_delete=models.PROTECT, related_name='services', null=True)
    account_address = models.ForeignKey(AccountAddress, on_delete=models.PROTECT, related_name='services',
                                        verbose_name="Account Service Address", null=True)
    date = models.DateField()
    status = TextChoicesField(choices_enum=ServiceChoices, default=ServiceChoices.SCHEDULED,
                              help_text="Current status of the service")
    team_members = models.ManyToManyField(TeamProfile, related_name='services')
    notes = models.TextField(blank=True, null=True)
    calendar_event_id = models.CharField(max_length=255, blank=True, null=True,
                                         help_text="External calendar event ID")

    class Meta:
        ordering = ['-date']
        indexes = [
            models.Index(fields=['account_address', 'date']),
        ]
        constraints = [
            models.UniqueConstraint(
                fields=['account_address', 'date'],
                name='unique_service_per_address_date'
            )
        ]

    def __str__(self):
        addr = self.account_address
        label = addr.name or "Primary Service Address"
        return f"Service for {addr.account.name} - {label} on {self.date}"