from django.db import models


class Customer(models.Model):
    telegram_id = models.IntegerField()
    chat_id = models.IntegerField()
    username = models.CharField(max_length=64)
    created_at = models.DateTimeField(auto_now_add=True)

    objects = models.Manager()

    def __str__(self):
        return self.username

    class Meta:
        db_table = "customers"


class JobTitle(models.Model):
    title = models.CharField(max_length=255, unique=True)

    def __str__(self):
        return self.title


class CustomerCV(models.Model):
    customer = models.OneToOneField(Customer, on_delete=models.CASCADE)
    job_titles = models.ManyToManyField(JobTitle, related_name="vacancies")
    min_salary_rub = models.PositiveIntegerField(null=True, blank=True, default=None)
    max_salary_rub = models.PositiveIntegerField(null=True, blank=True, default=None)
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)

    objects = models.Manager()

    def __str__(self):
        return self.customer.username

    class Meta:
        db_table = "customer_vcs"


class Vacancy(models.Model):
    job_title = models.ForeignKey(JobTitle, on_delete=models.CASCADE)
    original_title = models.CharField(max_length=255, null=True, blank=True)
    external_id = models.CharField(max_length=255, unique=True)
    min_salary_rub = models.PositiveIntegerField(null=True, blank=True, default=None)
    max_salary_rub = models.PositiveIntegerField(null=True, blank=True, default=None)
    company_name = models.CharField(max_length=255)
    requirements = models.TextField()
    content = models.TextField()
    timestamp = models.DateTimeField()
    link = models.URLField()

    def __str__(self):
        return self.job_title.title

    def get_formatted_response(self):
        response = f"""
        💼 **Вакансия**: {self.job_title}
        \n🏢 **Компания**: {self.company_name}
        \n📝 **Требования**: {self.requirements}
        """
        if self.min_salary_rub:
            if self.max_salary_rub:
                response += f"\n💸 **ЗП**: от {self.min_salary_rub} т.р."
            else:
                response += f"\n💸 **ЗП**: {self.min_salary_rub} т.р. - {self.max_salary_rub} т.р."
        elif self.max_salary_rub:
            response += f"\n💸 **ЗП**: до {self.max_salary_rub} т.р."

        return response

    class Meta:
        verbose_name_plural = 'Vacancies'


class RecommendedVacancy(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE, related_name="recommended_vacancies")
    vacancy = models.ForeignKey(Vacancy, on_delete=models.CASCADE, related_name="recommended_vacancies")
    created_at = models.DateTimeField(auto_now_add=True)

    objects = models.Manager()

    def __str__(self):
        return f'{self.customer.username} -> {self.vacancy_id}'

    class Meta:
        verbose_name_plural = 'Recommended Vacancies'
        db_table = "recommended_vacancies"