{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://visualspec.dev/schema/1.0/modules/interaction.schema.json",
  "title": "Interaction",
  "description": "Observable events, declarative visual actions and visual state graphs. No executable business logic.",
  "$defs": {
    "event": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "type": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/taxonomy"
        },
        "targetRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "key": {
          "type": "string",
          "minLength": 1
        },
        "modifiers": {
          "type": "array",
          "items": {
            "enum": [
              "alt",
              "ctrl",
              "meta",
              "shift"
            ]
          },
          "uniqueItems": true
        },
        "pointer": {
          "enum": [
            "mouse",
            "touch",
            "pen",
            "any"
          ]
        },
        "gesture": {
          "type": "object",
          "properties": {
            "type": {
              "enum": [
                "drag",
                "swipe",
                "pinch",
                "rotate",
                "long-press",
                "tap"
              ]
            },
            "axis": {
              "enum": [
                "x",
                "y",
                "both"
              ]
            },
            "threshold": {
              "type": "number",
              "minimum": 0
            },
            "direction": {
              "enum": [
                "up",
                "down",
                "left",
                "right",
                "any"
              ]
            }
          },
          "additionalProperties": false
        },
        "markerRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "externalName": {
          "type": "string",
          "minLength": 1
        },
        "actionRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "once": {
          "type": "boolean"
        },
        "debounce": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/duration"
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id",
        "type"
      ],
      "additionalProperties": false
    },
    "action": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "verb": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/taxonomy"
        },
        "targetRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "targetRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "intent": {
          "type": "string",
          "minLength": 1
        },
        "eventRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "stateRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "motionRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "parameters": {
          "type": "object",
          "properties": {
            "value": {
              "anyOf": [
                {
                  "type": "string",
                  "minLength": 1
                },
                {
                  "type": "number"
                },
                {
                  "type": "boolean"
                },
                {
                  "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/vector2"
                },
                {
                  "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/vector3"
                }
              ]
            },
            "position": {
              "anyOf": [
                {
                  "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/vector2"
                },
                {
                  "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/vector3"
                }
              ]
            },
            "angle": {
              "type": "number"
            },
            "scale": {
              "type": "number"
            },
            "time": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/time"
            },
            "destination": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
            },
            "materialRef": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
            },
            "duration": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/duration"
            },
            "property": {
              "type": "string",
              "minLength": 1
            },
            "visible": {
              "type": "boolean"
            }
          },
          "additionalProperties": false
        },
        "composition": {
          "enum": [
            "sequence",
            "parallel",
            "conditional",
            "stagger"
          ]
        },
        "actionRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "condition": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/condition"
        },
        "delay": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/duration"
        },
        "stagger": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/duration"
        },
        "onComplete": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "onCancel": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id",
        "verb"
      ],
      "additionalProperties": false
    },
    "state": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "targetRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "initial": {
          "type": "boolean"
        },
        "appearance": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/appearance.schema.json#/$defs/appearance"
        },
        "layout": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/layout.schema.json#/$defs/layout"
        },
        "visible": {
          "type": "boolean"
        },
        "variant": {
          "type": "string",
          "minLength": 1
        },
        "motionRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "accessibility": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/accessibility.schema.json#/$defs/accessibility"
        },
        "onEnter": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "onExit": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "transitions": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "to": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "eventRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "actionRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "motionRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "condition": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/condition"
              }
            },
            "required": [
              "to"
            ],
            "additionalProperties": false
          }
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id",
        "name"
      ],
      "additionalProperties": false
    },
    "flow": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "initial": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "sceneRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "states": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "id": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "name": {
                "type": "string",
                "minLength": 1
              },
              "sceneRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              }
            },
            "required": [
              "id",
              "name"
            ],
            "additionalProperties": false
          },
          "minItems": 1
        },
        "transitions": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "from": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "to": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "eventRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "motionRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "condition": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/condition"
              }
            },
            "required": [
              "from",
              "to"
            ],
            "additionalProperties": false
          }
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id",
        "initial",
        "states"
      ],
      "additionalProperties": false
    }
  }
}