__copyright__ = "Copyright © Stichting SciPost (SciPost Foundation)"
__license__ = "AGPL v3"


from django.db import models
from django.urls import reverse
from django.utils import timezone

from ..behaviors import SubmissionRelatedObjectMixin
from ..constants import ED_COMM_CHOICES
from ..managers import EditorialCommunicationQuerySet


class EditorialCommunication(SubmissionRelatedObjectMixin, models.Model):
    """Message between two of the EIC, referees, Editorial Administration and/or authors."""

    submission = models.ForeignKey("submissions.Submission", on_delete=models.CASCADE)
    referee = models.ForeignKey(
        "scipost.Contributor", on_delete=models.CASCADE, blank=True, null=True
    )
    comtype = models.CharField(max_length=4, choices=ED_COMM_CHOICES)
    timestamp = models.DateTimeField(default=timezone.now)
    text = models.TextField()

    objects = EditorialCommunicationQuerySet.as_manager()

    class Meta:
        ordering = ["timestamp"]
        default_related_name = "editorial_communications"

    def __str__(self):
        """Summarize the EditorialCommunication's meta information."""
        output = self.comtype
        if self.referee is not None:
            output += (
                " " + self.referee.user.first_name + " " + self.referee.user.last_name
            )
        output += " for submission {title} by {authors}".format(
            title=self.submission.title[:30], authors=self.submission.author_list[:30]
        )
        return output

    def get_absolute_url(self):
        """Return the url of the related Submission detail page."""
        return self.submission.get_absolute_url()