from django.db import models

from core.models import MyUser, AnonymousUserData
from django.utils import timezone

from datetime import timedelta

from .helpers import rename_file

class JobOffer(models.Model):

    posting_options = [
        ('M', 'Minimal'),
        ('S', 'Standard'),
        ('P', 'Premium'),
    ]

    status_choices = [
        ('A', 'Aktywna'),
        ('C', 'Zakończona'),
        ('W', 'Oczekująca na sprawdzenie'),
        ('R', 'Zarchiwizowana'),
    ]

    paid_status = [
        ('P', 'Oplacona'),
        ('N', 'Nieoplacona'),
        ('D', 'Inny status')
    ]

    category_choices = [
        ('A', 'Budownictwo'),
        ('B', 'IT'),
        ('C', 'Elektryka i Elektronika'),
        ('D', 'Produkcja'),
        ('E', 'Mechanika i konstrukcje'),
        ('F', 'Chemia i Biotechnologia'),
        ('G', 'Biomedyczne'),
        ('H', 'Automatyka i Robotyka'),
        ('I', 'Logistyka i Transport'),
        ('J', 'Sprzedaż'),
        ('Z', 'Inne')
    ]

    experience_levels = [
        ('A', 'Stażysta'),
        ('B', 'Junior'),
        ('C', 'Mid'),
        ('D', 'Senior'),
        ('E', 'Lead'),
        ('F', 'Manager'),
        ('G', 'Inne'),
    ]

    work_from_home = [
        ('wfh', 'Praca zdalna'),
        ('hyb', 'Hybrydowa'),
        ('off', 'Stacjonarna'),    
    ]
    
    employment_types = [
        ('B2B', 'Kontrakt B2B'),
        ('FT', 'Umowa o pracę'),
        ('MC', 'Umowa zlecenie'),
        ('CW', 'Umowa o dzieło'),
        ('INT', 'Staż'),
    ]

    posting_option = models.CharField(max_length=1, choices=posting_options)
    company_name = models.CharField(max_length=255)
    name = models.CharField(max_length=255)
    content = models.TextField()
    min_salary = models.IntegerField()
    max_salary = models.IntegerField()
    require_salary = models.BooleanField(null=True, default=False)
    webpage = models.CharField(max_length=255)
    localization = models.CharField(max_length=255)
    vat_number = models.CharField(max_length=10)
    created_at = models.DateTimeField(default=timezone.now)
    status = models.CharField(max_length=1, choices=status_choices, default='W')
    status_paid = models.CharField(max_length=1, choices=paid_status, 
                                   default='N')
    category = models.CharField(max_length=1, choices=category_choices, 
                                default='Z')
    expiration_date = models.DateTimeField(null=True, blank=True)
    image = models.CharField(max_length=255, null=True, blank=True)
    experience_level = models.CharField(max_length=255, choices=experience_levels, default='G')
    employment_type = models.CharField(max_length=3, choices=employment_types, default='FT')
    work_from_home = models.CharField(max_length=3, choices=work_from_home, default='off')
    updated_at = models.DateTimeField(auto_now=True)
    skill_levels = models.JSONField(null=True, blank=True, default=list)
    anonymous_user_data = models.ForeignKey(AnonymousUserData,
                                             null=True,
                                             blank=True,
                                             on_delete=models.SET_NULL)
    created_by = models.ForeignKey(MyUser, 
                                    null=True,
                                    blank=True,
                                    on_delete=models.CASCADE)
    first_name = models.CharField(max_length=255)
    last_name = models.CharField(max_length=255)
    contact_email = models.EmailField(max_length=255, null=True, blank=True)

    def save(self, *args, **kwargs):
        if not self.id:
            self.expiration_date = self.created_at + timedelta(days=45)
        super().save(*args, **kwargs)

    def __str__(self):
        return f"{self.name} at {self.company_name}"


class Skill(models.Model):
    skill_name = models.CharField(max_length=255)
    
    def __str__(self):
        return f"{self.skill_name}"


class CompanyLogo(models.Model):
    company_logo = models.ImageField(upload_to=rename_file)
    company_name = models.CharField(max_length=255)

    def __str__(self):
        return f"{self.company_name}"