{
  "title": "JSON Schema for CLA assistant custom fields",
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "patternProperties": {
    "^[A-Za-z0-9]*$": {
      "type": "object",
      "description": "Each property describes additional data which should be collected from a CLA signer and generates a form field",
      "properties": {
        "title": {
          "type": "string",
          "description": "Title is used to create a label for the form field"
        },
        "type": {
          "oneOf": [{
              "enum": ["hidden", "string", "textarea", "number", "boolean"],
              "description": "Field of type boolean generates a checkbox"
            },
            {
              "type": "object",
              "description": "Field of type enum generates radio buttons",
              "properties": {
                "enum": {
                  "type": "array",
                  "minItems": 2,
                  "items": {
                    "type": "string"
                  },
                  "uniqueItems": true
                }
              }
            }
          ]
        },
        "required": {
          "type": "boolean",
          "description": "Required fields are marked with asterisk and must be filled by signer"
        },
        "description": {
          "type": "string",
          "description": "Field description generates small text behind the label"
        },
        "maximum": {
          "type": "number",
          "description": "Can be used for fields of type number"
        },
        "minimum": {
          "type": "number",
          "description": "Can be used for fields of type number"
        },
        "githubKey": {
          "type": "string",
          "description": "Data of github user profile can be used to prefill the form. This refers to the response of the github api https://developer.github.com/v3/users/#get-a-single-user"
        }
      },
      "anyOf": [{
          "properties": {
            "type": {
              "enum": ["hidden"]
            },
            "required": {
              "enum": [false]
            }
          }
        },
        {
          "properties": {
            "type": {
              "enum": ["string", "textarea", "number", "boolean"]
            }
          }
        },
        {
          "properties": {
            "type": {
              "type": "object",
              "properties": {
                "enum": {
                  "type": "array"
                }
              }

            }
          }
        }
      ],
      "additionalProperties": false
    }
  },
  "dependencies": {
    "type": {
      "properties": {
        "required": {
          "enum": [false]
        }
      }
    }
  },
  "additionalProperties": false
}