75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
from __future__ import annotations
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from django.core.exceptions import ValidationError
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from django.db.models import (
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CharField,
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DateTimeField,
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EmailField,
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ForeignKey,
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Index,
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JSONField,
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TextChoices,
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TextField,
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SET_NULL,
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CASCADE,
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)
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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from engine.core.abstract import NiceModel
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from engine.authv.models import User
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class ThreadStatus(TextChoices):
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OPEN = "open", _("Open")
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CLOSED = "closed", _("Closed")
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class SenderType(TextChoices):
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USER = "user", _("User")
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STAFF = "staff", _("Staff")
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SYSTEM = "system", _("System")
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class ChatThread(NiceModel):
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user = ForeignKey(User, null=True, blank=True, on_delete=SET_NULL, related_name="chat_threads")
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email = EmailField(blank=True, default="", help_text=_("For anonymous threads"))
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assigned_to = ForeignKey(User, null=True, blank=True, on_delete=SET_NULL, related_name="assigned_chat_threads")
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status = CharField(max_length=16, choices=ThreadStatus.choices, default=ThreadStatus.OPEN)
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last_message_at = DateTimeField(default=timezone.now)
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attributes = JSONField(default=dict, blank=True)
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class Meta:
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indexes = [
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Index(fields=["status", "modified"], name="chatthread_status_mod_idx"),
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Index(fields=["assigned_to", "status"], name="chatthread_assigned_status_idx"),
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Index(fields=["user"], name="chatthread_user_idx"),
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Index(fields=["email"], name="chatthread_email_idx"),
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]
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ordering = ("-modified",)
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verbose_name = _("Chat thread")
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verbose_name_plural = _("Chat threads")
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def clean(self) -> None:
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super().clean()
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if not self.user and not self.email:
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raise ValidationError({"email": _("Provide user or email for anonymous thread.")})
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if self.assigned_to and not self.assigned_to.is_staff:
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raise ValidationError({"assigned_to": _("Assignee must be a staff user.")})
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class ChatMessage(NiceModel):
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thread = ForeignKey(ChatThread, on_delete=CASCADE, related_name="messages")
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sender_type = CharField(max_length=16, choices=SenderType.choices)
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sender_user = ForeignKey(User, null=True, blank=True, on_delete=SET_NULL, related_name="chat_messages")
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text = TextField()
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sent_at = DateTimeField(default=timezone.now)
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attributes = JSONField(default=dict, blank=True)
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class Meta:
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indexes = [
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Index(fields=["thread", "sent_at"], name="chatmessage_thread_sent_idx"),
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]
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ordering = ("sent_at", "uuid")
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verbose_name = _("Chat message")
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verbose_name_plural = _("Chat messages")
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