{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "QED Object Schema",
  "version": "4",
  "type": "object",
  "oneOf": [
    { "$ref": "#/definitions/schemaInfo" },
    { "$ref": "#/definitions/docs/any" }
  ],
  "definitions": {
    "nonEmptyString": { "type": "string", "minLength": 1 },
    "codeString": { "type": "string", "pattern": "^[A-Za-z0-9]+$" },
    "subcodeString": { "type": "string", "pattern": "^[A-Za-z0-9]*$" },
    "schemaInfo": {
      "type": "object",
      "properties": {
          "_id": { "type": "string", "pattern": "^schemaInfo$" },
          "_rev": { "$ref": "#/definitions/nonEmptyString" },
          "version": { "$ref": "#/definitions/nonEmptyString" },
          "viewsVersion": { "$ref": "#/definitions/nonEmptyString" }
      },
      "required": ["_id","version"],
      "additionalProperties": false
    },
    "docs": {
      "any": {
        "type": "object",
        "oneOf":[
          { "$ref": "#/definitions/docs/Question" },
          { "$ref": "#/definitions/docs/Survey" },
          { "$ref": "#/definitions/docs/SurveyRun" },
          { "$ref": "#/definitions/docs/Response" }
        ]
      },
      "Question": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Question$" },
          "_id": { "$ref": "#/definitions/nonEmptyString" },
          "_rev": { "$ref": "#/definitions/nonEmptyString" },
          "categories": { "type": "array", "items": { "$ref": "#/definitions/nonEmptyString" } },
          "code": { "$ref": "#/definitions/codeString" },
          "content": { "type": "array", "items": { "$ref": "#/definitions/content/any" } },
          "description": { "$ref": "#/definitions/nonEmptyString" },
          "publicationDate": { "type": "string", "format": "datetime" },
          "title": { "$ref": "#/definitions/nonEmptyString" },
          "topic": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","categories","code","content","title"],
        "additionalProperties": false
      },
      "Survey": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Survey$" },
          "_id": { "$ref": "#/definitions/nonEmptyString" },
          "_rev": { "$ref": "#/definitions/nonEmptyString" },
          "description": { "$ref": "#/definitions/nonEmptyString" },
          "publicationDate": { "type": "string", "format": "datetime" },
          "questions": { "type": "array", "items": { "$ref": "#/definitions/docs/Question" } },
          "title": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","questions","title"],
        "additionalProperties": false
      },
      "SurveyRun": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^SurveyRun$" },
          "_id": { "$ref": "#/definitions/nonEmptyString" },
          "_rev": { "$ref": "#/definitions/nonEmptyString" },
          "description": { "$ref": "#/definitions/nonEmptyString" },
          "endDate": { "type": "string", "format": "datetime" },
          "liveName": { "$ref": "#/definitions/nonEmptyString" },
          "mode": { "type": "string", "enum": [ "open", "closed" ] },
          "respondentCanDeleteOwnResponse": { "type": "boolean" },
          "secret": { "$ref": "#/definitions/nonEmptyString" },
          "startDate": { "type": "string", "format": "datetime" },
          "survey": { "$ref": "#/definitions/docs/Survey" },
          "title": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","mode","secret","survey","title"],
        "additionalProperties": false
      },
      "Response": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Response$" },
          "_id": { "$ref": "#/definitions/nonEmptyString" },
          "_rev": { "$ref": "#/definitions/nonEmptyString" },
          "answers": {
              "type": "object",
              "patternProperties": {
                  "^[A-Za-z0-9]+$": { "type": ["string","number"] }
              },
              "additionalProperties": false
          },
          "email": { "type": "string", "format": "email" },
          "publicationDate": { "type": "string", "format": "datetime" },
          "secret": { "$ref": "#/definitions/nonEmptyString" },
          "surveyRunId": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","answers","secret","surveyRunId"],
        "additionalProperties": false
      }
    },
    "content": {
      "any": {
        "type": "object",
        "oneOf": [
          { "$ref": "#/definitions/content/Header" },
          { "$ref": "#/definitions/content/Text" },
          { "$ref": "#/definitions/content/Divider" },
          { "$ref": "#/definitions/content/StringInput" },
          { "$ref": "#/definitions/content/TextInput" },
          { "$ref": "#/definitions/content/NumberInput" },
          { "$ref": "#/definitions/content/ScaleInput" },
          { "$ref": "#/definitions/content/SingleChoiceInput" },
          { "$ref": "#/definitions/content/MultipleChoiceInput" }
        ]
      },
      "Header": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Header$" },
          "text": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","text"],
        "additionalProperties": false
      },
      "Text": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Text$" },
          "text": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required": ["type","text"],
        "additionalProperties": false
      },
      "Divider": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^Divider$" }
        },
        "additionalProperties": false
      },
      "StringInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^StringInput$" },
          "subcode": { "$ref": "#/definitions/subcodeString" },
          "text": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required":["type","subcode"],
        "additionalProperties": false
      },
      "TextInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^TextInput$" },
          "maxLength": { "type": "integer" },
          "subcode": { "$ref": "#/definitions/subcodeString" },
          "text": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required":["type","subcode"],
        "additionalProperties": false
      },
      "NumberInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^NumberInput$" },
          "min": { "type": "integer" },
          "max": { "type": "integer" },
          "places": { "type": "integer" },
          "subcode": { "$ref": "#/definitions/subcodeString" },
          "text": { "$ref": "#/definitions/nonEmptyString" }
        },
        "required":["type","subcode"],
        "additionalProperties": false
      },
      "ScaleInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^ScaleInput$" },
          "minLabel": { "$ref": "#/definitions/nonEmptyString" },
          "min": { "type": "integer" },
          "max": { "type": "integer" },
          "maxLabel": { "$ref": "#/definitions/nonEmptyString" },
          "naLabel": { "$ref": "#/definitions/nonEmptyString" },
          "items": { "type": "array", "items": {
            "type": "object",
            "properties": {
              "minLabel": { "$ref": "#/definitions/nonEmptyString" },
              "maxLabel": { "$ref": "#/definitions/nonEmptyString" },
              "subcode": { "$ref": "#/definitions/subcodeString" },
              "text": { "$ref": "#/definitions/nonEmptyString" }
            },
            "required":["subcode","text"],
            "additionalProperties": false
          } }
        },
        "required":["type","min","max","items"],
        "additionalProperties": false
      },
      "SingleChoiceInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^SingleChoiceInput$" },
          "items": { "type": "array", "items": {
              "type": "object",
              "properties": {
                  "text": { "$ref": "#/definitions/nonEmptyString" },
                  "value": { "$ref": "#/definitions/nonEmptyString" }
              },
              "required": ["text","value"],
              "additionalProperties": false
          } },
          "lastItemIsOpen": {
              "type": "object",
              "properties": {
                  "subcode": { "$ref": "#/definitions/subcodeString" }
              },
              "required": ["subcode"],
              "additionalProperties": false
          },
          "subcode": { "$ref": "#/definitions/subcodeString" }
        },
        "required":["type","items","subcode"],
        "additionalProperties": false
      },
      "MultipleChoiceInput": {
        "type": "object",
        "properties": {
          "type": { "type": "string", "pattern": "^MultipleChoiceInput$" },
          "items": { "type": "array", "items": {
              "type": "object",
              "properties": {
                "subcode": { "$ref": "#/definitions/subcodeString" },
                "text": { "$ref": "#/definitions/nonEmptyString" }
              },
              "required": ["subcode","text"],
              "additionalProperties": false
          } },
          "lastItemIsOpen": {
              "type": "object",
              "properties": {
                "subcode": { "$ref": "#/definitions/subcodeString" }
              },
              "required": ["subcode"],
              "additionalProperties": false
          }
        },
        "required":["type","items"],
        "additionalProperties": false
      }
    }
  }
}