{"$schema":"http://json-schema.org/draft-07/schema#","schemaId":"550e8400-e29b-41d4-a716-446655440003","title":"Chat","type":"object","properties":{"id":{"type":"string","format":"uuid","description":"The unique identifier for the chat"},"name":{"type":"string","description":"The name of the chat (for group chats)"},"type":{"type":"string","enum":["direct","group"],"description":"The type of chat (direct message or group chat)"},"participantIds":{"type":"array","items":{"type":"string","format":"uuid"},"description":"Array of user IDs participating in the chat"},"lastMessageId":{"type":"string","format":"uuid","description":"ID of the most recent message in the chat"},"createdAt":{"type":"string","format":"date-time","description":"When the chat was created"},"updatedAt":{"type":"string","format":"date-time","description":"When the chat was last updated"},"isArchived":{"type":"boolean","description":"Whether the chat is archived"}},"required":["id","type","participantIds","createdAt"],"additionalProperties":false}