{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/apv022/mcf-spec/master/schemas/1.1/common.schema.json",
  "title": "MCF 1.1 common definitions",
  "$defs": {
    "id": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9._-]*$"
    },
    "nonEmptyString": {
      "type": "string",
      "minLength": 1
    },
    "safePath": {
      "type": "string",
      "minLength": 1,
      "pattern": "^(?!/)(?![A-Za-z]:/)(?!.*(?:^|/)\\.\\.?(?:/|$))(?!.*\\\\)(?!.*//).+$"
    },
    "archivePath": {
      "allOf": [
        {
          "$ref": "#/$defs/safePath"
        },
        {
          "pattern": "^[^:]+\\.mcf\\.zip$"
        }
      ]
    },
    "language": {
      "type": "string",
      "format": "bcp47"
    },
    "duration": {
      "type": "string",
      "pattern": "^P(?=\\d|T\\d)(?:\\d+(?:\\.\\d+)?Y)?(?:\\d+(?:\\.\\d+)?M)?(?:\\d+(?:\\.\\d+)?W)?(?:\\d+(?:\\.\\d+)?D)?(?:T(?=\\d)(?:\\d+(?:\\.\\d+)?H)?(?:\\d+(?:\\.\\d+)?M)?(?:\\d+(?:\\.\\d+)?S)?)?$"
    },
    "level": {
      "oneOf": [
        {
          "$ref": "#/$defs/nonEmptyString"
        },
        {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "label"
          ],
          "properties": {
            "label": {
              "$ref": "#/$defs/nonEmptyString"
            },
            "identifier": {
              "$ref": "#/$defs/nonEmptyString"
            },
            "uri": {
              "type": "string",
              "format": "uri"
            }
          }
        }
      ]
    },
    "framework": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "name"
      ],
      "properties": {
        "name": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "identifier": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "uri": {
          "type": "string",
          "format": "uri"
        }
      }
    },
    "learningOutcome": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "statement"
      ],
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "statement": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "framework": {
          "$ref": "#/$defs/framework"
        }
      }
    },
    "prerequisite": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "statement"
      ],
      "properties": {
        "statement": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "identifier": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "uri": {
          "type": "string",
          "format": "uri"
        },
        "package": {
          "$ref": "#/$defs/id"
        }
      }
    },
    "extension": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "required",
        "data"
      ],
      "properties": {
        "required": {
          "type": "boolean"
        },
        "data": true
      }
    },
    "extensions": {
      "type": "object",
      "propertyNames": {
        "pattern": "^[a-z0-9-]+(?:\\.[a-z0-9-]+){2,}$"
      },
      "additionalProperties": {
        "$ref": "#/$defs/extension"
      }
    },
    "completionCondition": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "requirement"
      ],
      "oneOf": [
        {
          "required": [
            "activity"
          ]
        },
        {
          "required": [
            "question"
          ]
        }
      ],
      "properties": {
        "activity": {
          "$ref": "#/$defs/id"
        },
        "question": {
          "$ref": "#/$defs/id"
        },
        "requirement": {
          "enum": [
            "viewed",
            "attempted",
            "answered",
            "submitted",
            "passed",
            "manually_marked_complete"
          ]
        },
        "minimum_score": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        }
      },
      "allOf": [
        {
          "if": {
            "required": [
              "minimum_score"
            ]
          },
          "then": {
            "properties": {
              "requirement": {
                "const": "passed"
              }
            }
          }
        }
      ]
    },
    "completion": {
      "type": "object",
      "additionalProperties": false,
      "oneOf": [
        {
          "required": [
            "all"
          ]
        },
        {
          "required": [
            "any"
          ]
        }
      ],
      "properties": {
        "all": {
          "type": "array",
          "minItems": 1,
          "items": {
            "oneOf": [
              {
                "$ref": "#/$defs/completionCondition"
              },
              {
                "$ref": "#/$defs/completion"
              }
            ]
          }
        },
        "any": {
          "type": "array",
          "minItems": 1,
          "items": {
            "oneOf": [
              {
                "$ref": "#/$defs/completionCondition"
              },
              {
                "$ref": "#/$defs/completion"
              }
            ]
          }
        }
      }
    },
    "relationship": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "type",
        "package"
      ],
      "properties": {
        "type": {
          "enum": [
            "translation_of",
            "has_translation",
            "is_version_of",
            "has_version",
            "derived_from",
            "requires",
            "supplements"
          ]
        },
        "package": {
          "$ref": "#/$defs/id"
        },
        "version": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "language": {
          "$ref": "#/$defs/language"
        },
        "href": {
          "oneOf": [
            {
              "$ref": "#/$defs/archivePath"
            },
            {
              "type": "string",
              "format": "uri",
              "pattern": "^https://"
            }
          ]
        }
      }
    },
    "localizedResource": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "source"
      ],
      "properties": {
        "source": {
          "$ref": "#/$defs/safePath"
        },
        "language": {
          "$ref": "#/$defs/language"
        },
        "kind": {
          "enum": [
            "captions",
            "subtitles",
            "descriptions"
          ]
        }
      }
    },
    "assetAlternate": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "source",
        "purpose"
      ],
      "properties": {
        "source": {
          "$ref": "#/$defs/safePath"
        },
        "purpose": {
          "enum": [
            "accessible_alternative",
            "low_bandwidth",
            "print",
            "transcoded"
          ]
        },
        "language": {
          "$ref": "#/$defs/language"
        },
        "media_type": {
          "type": "string",
          "pattern": "^[A-Za-z0-9!#$&^_.+-]+/[A-Za-z0-9!#$&^_.+-]+$"
        },
        "description": {
          "type": "string"
        }
      }
    },
    "asset": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "source"
      ],
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "source": {
          "$ref": "#/$defs/safePath"
        },
        "media_type": {
          "type": "string",
          "pattern": "^[A-Za-z0-9!#$&^_.+-]+/[A-Za-z0-9!#$&^_.+-]+$"
        },
        "title": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "description": {
          "type": "string"
        },
        "creator": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "license": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "attribution_url": {
          "type": "string",
          "format": "uri"
        },
        "integrity": {
          "type": "string",
          "pattern": "^sha(?:256|384|512)-[A-Za-z0-9+/]+={0,2}$"
        },
        "language": {
          "$ref": "#/$defs/language"
        },
        "captions": {
          "type": "array",
          "minItems": 1,
          "items": {
            "allOf": [
              {
                "$ref": "#/$defs/localizedResource"
              },
              {
                "required": [
                  "language",
                  "kind"
                ]
              }
            ]
          }
        },
        "transcript": {
          "$ref": "#/$defs/localizedResource"
        },
        "audio_description": {
          "$ref": "#/$defs/localizedResource"
        },
        "alternates": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/$defs/assetAlternate"
          }
        }
      }
    },
    "rubricLevel": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "description",
        "points"
      ],
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "description": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "points": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "rubricCriterion": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "description",
        "levels"
      ],
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "description": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "levels": {
          "type": "array",
          "minItems": 2,
          "items": {
            "$ref": "#/$defs/rubricLevel"
          }
        }
      }
    },
    "rubric": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "title",
        "criteria"
      ],
      "properties": {
        "id": {
          "$ref": "#/$defs/id"
        },
        "title": {
          "$ref": "#/$defs/nonEmptyString"
        },
        "description": {
          "type": "string"
        },
        "criteria": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/$defs/rubricCriterion"
          }
        }
      }
    }
  }
}