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 JobListing(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')
    ]
    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()
    minsalary = models.IntegerField()
    maxsalary = models.IntegerField()
    requiresalary = 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=255, null=True, blank=True)
    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, null=True, blank=True)
    employmentType = models.CharField(max_length=255, null=True, blank=True)
    workFromHome = models.CharField(max_length=255)
    updated_at = models.DateTimeField(auto_now=True)
    skillLevels = models.ManyToManyField('SkillLevels', blank=True)
    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 SkillLevels(models.Model):

    proficiency_choices = [
        ('N', 'Nice to have'),
        ('B', 'Podstawowy'),
        ('M', 'Średnio zaawansowany'),
        ('A', 'Zaawansowany'),
        ('E', 'Ekspert'),
    ]

    skill_id = models.ForeignKey(Skill, on_delete=models.CASCADE)
    skill_level = models.CharField(max_length=1, choices=proficiency_choices,)
    jobposting_id = models.ForeignKey(JobListing, on_delete=models.CASCADE)

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}"