{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "dji-embed --progress jsonl event (v1)",
  "description": "Validates any single line emitted by a dji-embed command running with --progress jsonl. Consumers must ignore unknown fields; breaking changes bump the per-event 'v' field.",
  "type": "object",
  "required": ["v", "event"],
  "properties": {
    "v": { "const": 1 }
  },
  "oneOf": [
    {
      "properties": {
        "event": { "const": "start" },
        "command": { "type": "string" },
        "total": { "type": "integer", "minimum": 0 }
      },
      "required": ["event", "command"]
    },
    {
      "properties": {
        "event": { "const": "progress" },
        "current": { "type": "integer", "minimum": 0 },
        "total": { "type": "integer", "minimum": 0 },
        "item": { "type": "string" }
      },
      "required": ["event", "current", "total"]
    },
    {
      "properties": {
        "event": { "const": "warning" },
        "message": { "type": "string" },
        "item": { "type": "string" }
      },
      "required": ["event", "message"]
    },
    {
      "properties": {
        "event": { "const": "result" },
        "ok": { "type": "boolean" },
        "outputs": { "type": "array", "items": { "type": "string" } },
        "summary": { "type": "object" }
      },
      "required": ["event", "ok", "outputs", "summary"]
    },
    {
      "properties": {
        "event": { "const": "error" },
        "message": { "type": "string" },
        "item": { "type": "string" }
      },
      "required": ["event", "message"]
    },
    {
      "description": "Forward-compatibility: event types added later under the same v are legal; consumers ignore ones they do not recognise.",
      "properties": {
        "event": {
          "type": "string",
          "not": { "enum": ["start", "progress", "warning", "result", "error"] }
        }
      },
      "required": ["event"]
    }
  ]
}