from django.db import models
from django.db.models.deletion import CASCADE
from django.utils.translation import gettext_lazy as _
from django.contrib.auth.models import User
import datetime
import os
from django.db.models.signals import post_save, post_delete
from django.dispatch import receiver
import easyocr


class Document(models.Model):
    name=models.CharField(_('name'), max_length=512)
    user = models.ForeignKey(User, on_delete=CASCADE)
    file = models.FileField(upload_to='%y/%m/%d', blank=False)
    uploaded_date = models.DateField(default=datetime.date.today)

    class Meta:
        verbose_name_plural = "Documents"

    def __str__(self):
        return self.name


@receiver(post_save, sender=Document)
def publish_date(sender, instance, created, **kwargs):
    file = instance.file.path
    file_format = os.path.basename(file).split('.')[-1]
    file_name = os.path.basename(file).split('.')[0]
    file_path = os.path.dirname(file)
    name = instance.name
    
    #os.remove(file)

    try:
        reader = easyocr.Reader(['ja','en'])
        result = reader.readtext(file)
        print('@@@@@@@@@@')
        print(result)
        print('@@@@@@@@@@')
        
    except Exception as e:
        pass
        


@receiver(post_delete, sender=Document)
def delete_layer(sender, instance, **kwargs):
    if instance.file:
        if os.path.isfile(instance.file.path):
            os.remove(instance.file.path)