from django.contrib.auth.models import AbstractUser
from django.db import models
from tenants.models import Tenant


class User(AbstractUser):
    """
    Custom User model that extends Django's AbstractUser.
    Supports multi-tenancy by linking users to specific tenants.
    """
    tenant = models.ForeignKey(
        Tenant,
        on_delete=models.CASCADE,
        related_name='users',
        null=True,
        blank=True
    )
    is_job_seeker = models.BooleanField(default=False)
    is_employer = models.BooleanField(default=False)
    is_tenant_admin = models.BooleanField(default=False)
    is_global_admin = models.BooleanField(default=False)
    
    # Additional fields for job seekers
    resume = models.FileField(upload_to='resumes/', null=True, blank=True)
    bio = models.TextField(max_length=1000, blank=True)
    phone_number = models.CharField(max_length=15, blank=True)
    
    # Additional fields for employers
    company_name = models.CharField(max_length=200, blank=True)
    
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    
    def __str__(self):
        return f"{self.username} ({self.email})"
    
    def get_full_name(self):
        """
        Return the user's full name.
        """
        if self.first_name and self.last_name:
            return f"{self.first_name} {self.last_name}"
        return self.username