{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "annotations.json",
  "title": "Definitions: Annotations.",
  "description": "Schemas in #/definitions detect or validate keys/objects (direct children) uniquely used to describe Annotations (Section 3.1 and 3.3.5).",
  "definitions": {

    "contextValueFound": {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Definition: Valid @context string",
      "description": "True when the string has value http://www.w3.org/ns/anno.jsonld (Section 3.1)",
      "type": "string",
      "enum": [ "http://www.w3.org/ns/anno.jsonld" ]
    },

    "contextValueInArrayFound": {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Definition: Valid @context string found in array",
      "description": "True when the array contains a string item having value http://www.w3.org/ns/anno.jsonld (Section 3.1)",
      "type": "array",
      "not":
      { "items":
        { "not":
          { "$ref": "#/definitions/contextValueFound" }
        }
      }
    },

    "annotationTypeValueRecognized": {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Definition: Valid annotation type value string",
      "description": "True when the string has value 'Annotation' (Section 3.1)",
      "type": "string",
      "enum": [ "Annotation" ]
    },

    "annotationTypeValueInArrayRecognized": {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Definition: Valid annotation type array",
      "description": "True when the array contains a string item having value 'Annotation' (Section 3.1)",
      "type": "array",
      "not":
      { "items":
        { "not":
          { "$ref": "#/definitions/annotationTypeValueRecognized" }
        }
      }
    },

    "annotationTypeValueFound":
    {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Implementation: Annotation type",
      "description": "True when the Annotation has type key and 'Annotation' is a value of type (Section 3.1)",
      "type": "object",
      "required": [ "type" ],
      "properties": {
        "type": {
          "oneOf": [
          { "$ref": "annotations.json#/definitions/annotationTypeValueRecognized" },
          { "$ref": "annotations.json#/definitions/annotationTypeValueInArrayRecognized" }
          ]
        }
      }
    },

    "motivationList":
    {   "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Definitions: list of motivation and purposes",
      "description": "List of motivations and purposes as defined in the model (Section 3.3.5).",
      "type": "string",
      "enum": ["assessing", "bookmarking", "classifying", "commenting", "describing", "editing", "highlighting", "identifying", "linking", "moderating", "questioning", "replying", "tagging" ]
    },

    "motivationRecognizedIfPresent":
    {   "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Validation: motivation value",
      "description": "True when the annotation has 0 or more motivation property values (Section 3.3.5)",
      "type": "object",
      "properties": {"motivation":
        { "oneOf": [
          { "$ref": "#/definitions/motivationList" },
          { "type": "array",
            "minItems": 1,
            "items": { "$ref": "#/definitions/motivationList" } }
        ]
        }
      }
    },

    "motivationSingularIfPresent":
    {   "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Validation: singular motivation value",
      "description": "True when the annotation has 0 or exactly one motivation property value (Section 3.3.5)",
      "type": "object",
      "properties": {"motivation":
        { "oneOf": [
          { "$ref": "#/definitions/motivationList" },
          { "type": "array",
            "minItems": 1,
            "maxItems": 1,
            "items": { "$ref": "#/definitions/motivationList" } }
        ]
        }
      }
    },

    "motivationPropertyFound":
    {   "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Collate: via motivation with qualifying annotation class",
      "description": "Supports implementation check of via (if/when) used on Annotation (Sections 3.3.5)",
      "oneOf": [
      {"$ref": "#/definitions/annotationTypeValueFound"}
      ],
      "allOf": [
      {"required": ["motivation"]},
      {"$ref": "#/definitions/motivationRecognizedIfPresent"}
      ]
    },

    "singleMotivationPropertyFound":
    {   "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Collate: via motivation with qualifying annotation class",
      "description": "Supports implementation check of via (if/when) used on Annotation (Sections 3.3.5)",
      "oneOf": [
      {"$ref": "#/definitions/annotationTypeValueFound"}
      ],
      "allOf": [
      {"required": ["motivation"]},
      {"$ref": "#/definitions/motivationSingularIfPresent"}
      ]
    },

    "stylesheetValueDefinition":
    {
      "title": "Definition: stylesheet value",
      "description": "True when Annotation has no stylesheet, references an external stylesheet, or has embedded stylesheet of type CssStylesheet (Section 4.4)",
      "type": "object",
      "properties":
      {
        "stylesheet":
        {
          "oneOf":
            [
            { "$ref": "id.json#/definitions/arraySingleStringUri"},
            { "type": "object",
              "properties":
              {
                "type": { "type": "string",
                  "enum": [ "CssStylesheet" ]},
                  "id": { "$ref": "id.json#/definitions/stringUri" },
                  "value": { "type": "string" }
              },
              "not": { "required": [ "id", "value"] },
              "oneOf": [
              { "required": [ "id"] },
              { "required": [ "value"] }
              ]
            }
            ]
        }
      }
    },

    "stylesheetDetected":
    {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Check for implementation of Annotation stylesheet",
      "description": "True when the Annotation has a valid stylesheet property (Section 4.4)",
      "allOf": [
      {"required": ["stylesheet"]},
      {"$ref": "#/definitions/stylesheetValueDefinition"}
      ]
    },

    "bodyValueValidIfPresent":
    {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Validation: bodyValue",
      "description": "True when the Annotation has no bodyValue key or has a bodyValue key with valid value (Section 3.2.5)",
      "type": "object",
      "properties":
      {
        "bodyValue":
        {
          "oneOf":
            [
            { "type": "string" },
            { "type": "array",
              "minItems": 1,
              "maxItems": 1,
              "items": { "type": "string" }
            }
            ]
        }
      }
    },

    "bodyValueFound":
    {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": " Implementation: bodyValue",
      "description": "True when the Annotation has a valid bodyValue (Section 3.2.5)",
      "allOf":
        [
        { "$ref": "#/definitions/bodyValueValidIfPresent" },
        { "required": [ "bodyValue" ] }
        ]
    }

  }
}