{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Multi-Media Interchange Format",
  "description": "The JSON-LD objects exchanged by CLAMS services.",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "metadata": {
      "$ref": "#/definitions/mmifMetadata"
    },
    "documents": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/annotation"
      }
    },
    "views": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/view"
      }
    }
  },
  "required": [
    "metadata",
    "documents",
    "views"
  ],
  "definitions": {
    "mmifMetadata": {
      "type": "object",
      "properties": {
        "mmif": {
          "type": "string",
          "format": "uri"
        }
      },
      "required": [
        "mmif"
      ]
    },
    "viewMetadata": {
      "type": "object",
      "properties": {
        "timestamp": {
          "type": "string",
          "format": "date-time"
        },
        "app": {
          "type": "string",
          "format": "uri"
        },
        "contains": {
          "type": "object"
        }
      },
      "required": [
        "app",
        "contains"
      ]
    },
    "text": {
      "type": "object",
      "properties": {
        "@value": {
          "type": "string"
        },
        "@language": {
          "type": "string"
        }
      },
      "additionalProperties": false,
      "required": [
        "@value"
      ]
    },
    "view": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "metadata": {
          "type": "object"
        },
        "annotations": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/annotation"
          }
        }
      },
      "additionalProperties": false,
      "required": [
        "id",
        "metadata",
        "annotations"
      ]
    },
    "annotation": {
      "type": "object",
      "properties": {
        "@type": {
          "type": "string"
        },
        "properties": {
          "$ref": "#/definitions/annotationProperties"
        }
      },
      "required": [
        "@type",
        "properties"
      ],
      "additionalProperties": false
    },
    "annotationProperties": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "start": {
          "type": "integer",
          "minimum": -1
        },
        "end": {
          "type": "integer",
          "minimum": -1
        }
      },
      "required": [
        "id"
      ]
    }
  }
}