feat(chat): add models, views, WebSocket consumers, forms and URL config

chat/forms.py

@@ -0,0 +1,41 @@
+from django import forms
+from django.contrib.auth.models import User
+from chat.models import UserProfile, Channel
+
+
+class RegisterForm(forms.Form):
+    username = forms.CharField(max_length=150)
+    email = forms.EmailField()
+    password = forms.CharField(widget=forms.PasswordInput)
+
+    def clean_username(self):
+        username = self.cleaned_data['username']
+        if User.objects.filter(username=username).exists():
+            raise forms.ValidationError('Username already taken.')
+        return username
+
+    def clean_email(self):
+        email = self.cleaned_data['email']
+        if User.objects.filter(email=email).exists():
+            raise forms.ValidationError('Email already in use.')
+        return email
+
+
+class ProfileForm(forms.ModelForm):
+    class Meta:
+        model = UserProfile
+        fields = ['avatar', 'bio']
+        widgets = {
+            'bio': forms.Textarea(attrs={'rows': 3}),
+        }
+
+
+class ChannelForm(forms.ModelForm):
+    class Meta:
+        model = Channel
+        fields = ['name', 'description']
+
+
+class MessageFileForm(forms.Form):
+    file = forms.FileField(required=False)
+    content = forms.CharField(required=False, widget=forms.HiddenInput)