json-schema.app test

schema.json

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "required": [
    "assignments"
  ],
  "properties": {
    "assignments": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "type": {},
          "pointer": {
            "type": "string"
          },
          "completed": {
            "type": "boolean"
          },
          "chapters": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "id"
              ],
              "properties": {
                "id": {
                  "type": "string"
                },
                "pointer": {
                  "type": "string"
                }
              }
            }
          }
        },
        "oneOf": [
          {
            "$ref": "#/definitions/multi-pointer-in-child"
          },
          {
            "$ref": "#/definitions/multi-pointer-at-root"
          },
          {
            "$ref": "#/definitions/notes-completed:false"
          },
          {
            "$ref": "#/definitions/notes-completed:true"
          }
        ]
      }
    }
  },
  "definitions": {
    "multi-pointer-in-child": {
      "properties": {
        "type": {
          "enum": [
            "multi"
          ]
        },
        "chapters": {
          "minItems": 1,
          "items": {
            "required": [
              "pointer"
            ]
          }
        },
        "completed": {}
      },
      "required": [
        "type"
      ],
      "not": {
        "required": [
          "pointer"
        ]
      },
      "additionalProperties": false
    },
    "multi-pointer-at-root": {
      "properties": {
        "type": {
          "enum": [
            "multi"
          ]
        },
        "pointer": {},
        "chapters": {
          "items": {
            "not": {
              "required": [
                "pointer"
              ]
            }
          }
        },
        "completed": {}
      },
      "required": [
        "type"
      ],
      "additionalProperties": false
    },
    "notes-completed:false": {
      "additionalProperties": false,
      "properties": {
        "type": {
          "enum": [
            "notes"
          ]
        },
        "chapters": {},
        "completed": {
          "enum": [
            false
          ]
        },
        "pointer": {}
      },
      "required": [
        "type",
        "pointer"
      ]
    },
    "notes-completed:true": {
      "additionalProperties": false,
      "properties": {
        "type": {
          "enum": [
            "notes"
          ]
        },
        "chapters": {},
        "completed": {
          "enum": [
            true
          ]
        }
      },
      "required": [
        "type"
      ],
      "not": {
        "required": [
          "pointer"
        ]
      }
    }
  }
}