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from django.db import models |
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from apps.core.models import TimestampMixin, SoftDeleteMixin, VersionedFieldMixin |
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from apps.users.models import User |
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class Conversation(TimestampMixin, SoftDeleteMixin): |
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"""Conversation entre utilisateurs""" |
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last_message_at = models.DateTimeField(null=True, blank=True, db_index=True) |
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class Meta: |
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db_table = 'conversations' |
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verbose_name = 'Conversation' |
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verbose_name_plural = 'Conversations' |
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ordering = ['-last_message_at'] |
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def __str__(self): |
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participants = self.participants.filter(is_active=True) |
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users = [p.user.email for p in participants[:3]] |
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return f"Conversation: {', '.join(users)}" |
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class ConversationParticipant(TimestampMixin, SoftDeleteMixin): |
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"""Participants d'une conversation""" |
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conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='participants') |
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user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='conversation_participations') |
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joined_at = models.DateTimeField(auto_now_add=True) |
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left_at = models.DateTimeField(null=True, blank=True) |
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last_read_at = models.DateTimeField(null=True, blank=True) |
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class Meta: |
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db_table = 'conversation_participants' |
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unique_together = ['conversation', 'user', 'is_active'] |
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indexes = [ |
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models.Index(fields=['user', 'is_active']), |
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] |
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def get_unread_count(self): |
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"""Nombre de messages non lus""" |
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if not self.last_read_at: |
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return self.conversation.messages.filter(is_active=True).count() |
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return self.conversation.messages.filter( |
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is_active=True, |
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created_at__gt=self.last_read_at |
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).exclude(sender=self.user).count() |
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class Message(TimestampMixin, SoftDeleteMixin): |
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"""Message dans une conversation""" |
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conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='messages') |
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sender = models.ForeignKey(User, on_delete=models.CASCADE, related_name='sent_messages') |
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is_encrypted = models.BooleanField(default=False) |
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encrypted_keys = models.JSONField(default=dict, blank=True) |
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is_visible_to_recipient = models.BooleanField(default=False, help_text="Visible seulement pendant un rendez-vous") |
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class Meta: |
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db_table = 'messages' |
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verbose_name = 'Message' |
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verbose_name_plural = 'Messages' |
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indexes = [ |
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models.Index(fields=['conversation', '-created_at']), |
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models.Index(fields=['sender', '-created_at']), |
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] |
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ordering = ['created_at'] |
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def __str__(self): |
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content = self.contents.filter(is_current=True).first() |
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return f"Message from {self.sender.email}: {content.content[:50] if content else ''}" |
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class MessageContent(TimestampMixin, VersionedFieldMixin): |
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"""Contenu du message (éditable)""" |
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message = models.ForeignKey(Message, on_delete=models.CASCADE, related_name='contents') |
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content = models.TextField() |
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class Meta: |
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db_table = 'message_contents' |
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class MessageReadStatus(TimestampMixin): |
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"""Statut de lecture par utilisateur""" |
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message = models.ForeignKey(Message, on_delete=models.CASCADE, related_name='read_statuses') |
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user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='message_reads') |
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read_at = models.DateTimeField(auto_now_add=True) |
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class Meta: |
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db_table = 'message_read_statuses' |
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unique_together = ['message', 'user'] |
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class MessageAttachment(TimestampMixin, SoftDeleteMixin): |
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"""Pièces jointes (optionnel)""" |
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message = models.ForeignKey(Message, on_delete=models.CASCADE, related_name='attachments') |
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file_url = models.URLField(max_length=500) |
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file_name = models.CharField(max_length=255) |
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file_type = models.CharField(max_length=50) |
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file_size = models.IntegerField() |
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class Meta: |
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db_table = 'message_attachments' |
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