Add image uploads in chat messages (Gitea issue #10)

Images live on the app server's local disk (uploads/), served through an authenticated, room-membership-gated endpoint since rooms can be private. Uploads are streamed with a byte-count cap, validated as genuine decodable images with Pillow (not just a spoofed Content-Type), and downscaled to 2000px on the longer side (except GIF, to preserve animation). Backend: MessageImage model + nullable Message.content/image_id with a content-or-image CheckConstraint, upload/serve endpoints in rooms.py, WS message envelope gains image_id, push notification body says "sent an image" for image-only messages. Frontend: Composer gets an attach button with upload progress and a thumbnail chip; MessageList renders images inline with a click-to-zoom ImageLightbox.
2026-08-14 12:21:42 -06:00
parent 559adf9b7e
commit f2a59f798b
27 changed files with 829 additions and 40 deletions
@@ -0,0 +1,57 @@
+"""message images
+
+Revision ID: c610bdb04567
+Revises: 3350c67553ad
+Create Date: 2026-08-14 12:00:58.698701
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'c610bdb04567'
+down_revision: Union[str, Sequence[str], None] = '3350c67553ad'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('message_images',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('room_id', sa.Uuid(), nullable=False),
+    sa.Column('uploaded_by', sa.Uuid(), nullable=False),
+    sa.Column('storage_filename', sa.String(length=64), nullable=False),
+    sa.Column('content_type', sa.String(length=50), nullable=False),
+    sa.Column('size_bytes', sa.BigInteger(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
+    sa.ForeignKeyConstraint(['room_id'], ['rooms.id'], ),
+    sa.ForeignKeyConstraint(['uploaded_by'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_message_images_room_id'), 'message_images', ['room_id'], unique=False)
+    op.add_column('messages', sa.Column('image_id', sa.Uuid(), nullable=True))
+    op.alter_column('messages', 'content',
+               existing_type=sa.TEXT(),
+               nullable=True)
+    op.create_foreign_key('messages_image_id_fkey', 'messages', 'message_images', ['image_id'], ['id'])
+    op.create_check_constraint('messages_content_or_image_required', 'messages', 'content IS NOT NULL OR image_id IS NOT NULL')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint('messages_content_or_image_required', 'messages', type_='check')
+    op.drop_constraint('messages_image_id_fkey', 'messages', type_='foreignkey')
+    op.alter_column('messages', 'content',
+               existing_type=sa.TEXT(),
+               nullable=False)
+    op.drop_column('messages', 'image_id')
+    op.drop_index(op.f('ix_message_images_room_id'), table_name='message_images')
+    op.drop_table('message_images')
+    # ### end Alembic commands ###