{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://mrueda.github.io/pad-lattice/schemas/demo-manifest-v1.json",
  "title": "Pad-Lattice Demo Manifest v1",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_version", "kind", "id", "title", "initial_stage", "stages"],
  "properties": {
    "schema_version": {"const": 1},
    "kind": {"const": "demo"},
    "id": {"type": "string", "minLength": 1},
    "title": {"type": "string", "minLength": 1},
    "initial_stage": {"type": "string", "minLength": 1},
    "stages": {
      "type": "array",
      "minItems": 1,
      "maxItems": 64,
      "items": {"$ref": "#/$defs/stage"}
    }
  },
  "$defs": {
    "state": {
      "enum": [
        "running", "waiting_for_reply", "user_typing",
        "waiting_for_approval", "success", "error", "cancelled"
      ]
    },
    "action": {"enum": ["approve", "reject", "stop", "retry"]},
    "session": {
      "type": "object",
      "additionalProperties": false,
      "required": ["slot", "state", "selected", "accent", "label"],
      "properties": {
        "slot": {"type": "integer", "minimum": 0, "maximum": 7},
        "state": {"$ref": "#/$defs/state"},
        "selected": {"type": "boolean"},
        "accent": {"type": "string", "minLength": 1},
        "label": {"type": "string", "minLength": 1}
      }
    },
    "transition": {
      "type": "object",
      "additionalProperties": false,
      "required": ["event", "slot", "action", "next_stage", "audio"],
      "properties": {
        "event": {"enum": ["select", "action"]},
        "slot": {"type": ["integer", "null"], "minimum": 0, "maximum": 7},
        "action": {"oneOf": [{"$ref": "#/$defs/action"}, {"type": "null"}]},
        "next_stage": {"type": "string", "minLength": 1},
        "audio": {"type": ["string", "null"], "minLength": 1}
      }
    },
    "guideTarget": {
      "type": "object",
      "additionalProperties": false,
      "required": ["event", "slot", "action"],
      "properties": {
        "event": {"enum": ["select", "action"]},
        "slot": {"type": ["integer", "null"], "minimum": 0, "maximum": 7},
        "action": {"oneOf": [{"$ref": "#/$defs/action"}, {"type": "null"}]}
      }
    },
    "stage": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "prompt", "guide_target", "view", "transitions", "enter_audio", "terminal"],
      "properties": {
        "id": {"type": "string", "minLength": 1},
        "prompt": {
          "type": "object",
          "additionalProperties": false,
          "required": ["eyebrow", "title", "detail"],
          "properties": {
            "eyebrow": {"type": "string", "minLength": 1},
            "title": {"type": "string", "minLength": 1},
            "detail": {"type": "string", "minLength": 1}
          }
        },
        "guide_target": {
          "oneOf": [{"$ref": "#/$defs/guideTarget"}, {"type": "null"}]
        },
        "view": {
          "type": "object",
          "additionalProperties": false,
          "required": ["sessions", "available_actions"],
          "properties": {
            "sessions": {
              "type": "array",
              "maxItems": 8,
              "items": {"$ref": "#/$defs/session"}
            },
            "available_actions": {
              "type": "array",
              "uniqueItems": true,
              "items": {"$ref": "#/$defs/action"}
            }
          }
        },
        "transitions": {
          "type": "array",
          "items": {"$ref": "#/$defs/transition"}
        },
        "enter_audio": {"type": ["string", "null"], "minLength": 1},
        "terminal": {"type": "boolean"}
      }
    }
  }
}