{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://git.eeqj.de/sneak/chat/schema/c2s/topic.json",
  "title": "C2S Topic",
  "description": "Set a channel's topic.",
  "type": "object",
  "properties": {
    "channel": {
      "type": "string",
      "description": "Target channel.",
      "pattern": "^#[a-zA-Z0-9_-]+$"
    },
    "topic": {
      "type": "string",
      "description": "New topic text. Empty string clears the topic.",
      "maxLength": 512
    }
  },
  "required": ["channel", "topic"],
  "additionalProperties": false
}