from django.db import models
from django.utils import timezone
from .verbose_names import verbose_names

class Song(models.Model):
    song_title = models.CharField(max_length=200, verbose_name=verbose_names['song_title'])
    release_year = models.CharField(max_length=4, verbose_name=verbose_names['release_year'])
    duration = models.DurationField(null=True, verbose_name=verbose_names['duration'])
    created_at = models.DateTimeField(default=timezone.now, verbose_name=verbose_names['created_at'], editable=False)
    modified_at = models.DateTimeField(auto_now=True, verbose_name='Data ostatniej modyfikacji')

    class Meta:
        verbose_name = 'Song'
        verbose_name_plural = 'Songs'
        unique_together = ('song_title', 'release_year')

    def __str__(self):
        return self.song_title

class Artist(models.Model):
    artist_name = models.CharField(max_length=255)

    class Meta:
        verbose_name = 'Artist'
        verbose_name_plural = 'Artists'

    def __str__(self):
        return self.artist_name