{
  "$id": "https://wueww.github.io/fahrplan-schema/fahrplan.schema.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "WueWW Fahrplan Schema",
  "type": "object",
  "properties": {
    "format": {
      "type": "string",
      "description": "Schema Version number, currently 0.5.1; semantic versioning applies"
    },
    "sessions": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "start",
          "end",
          "cancelled",
          "onlineOnly",
          "host",
          "title"
        ],
        "properties": {
          "id": {
            "type": "integer",
            "description": "Unique identifier of the session"
          },
          "start": {
            "type": "string",
            "format": "date-time"
          },
          "end": {
            "anyOf": [
              {
                "type": "string",
                "format": "date-time"
              },
              { "type": "null", "description": "the session is open-ended" }
            ]
          },
          "cancelled": {
            "type": "boolean",
            "description": "whether the event has been cancelled explicitly; users may wish to display the information stroked out or else as applicable"
          },
          "onlineOnly": {
            "type": "boolean",
            "description": "whether the event is online only; online only events do not have location information"
          },
          "host": {
            "type": "object",
            "required": ["id", "name"],
            "properties": {
              "id": {
                "type": "integer",
                "description": "Unique identifier of the session"
              },
              "name": { "type": "string" },
              "infotext": { "type": "string" },
              "logo": { "type": "string" },
              "links": {
                "type": "object",
                "properties": {
                  "host": { "type": "string" },
                  "jobs": { "type": "string" },
                  "facebook": { "type": "string" },
                  "twitter": { "type": "string" },
                  "youtube": { "type": "string" },
                  "instagram": { "type": "string" },
                  "xing": { "type": "string" },
                  "linkedIn": { "type": "string" }
                }
              }
            }
          },
          "title": { "type": "string" },
          "location": {
            "type": "object",
            "required": ["name", "streetNo", "zipcode", "city"],
            "properties": {
              "name": { "type": "string" },
              "streetNo": { "type": "string" },
              "zipcode": { "type": "string" },
              "city": { "type": "string" },
              "lat": {
                "type": "number",
                "minimum": -90,
                "maximum": 90
              },
              "lng": {
                "type": "number",
                "minimum": -180,
                "maximum": 180
              }
            }
          },
          "description": {
            "type": "object",
            "properties": {
              "short": { "type": "string" },
              "long": { "type": "string" }
            }
          },
          "links": {
            "type": "object",
            "properties": {
              "event": { "type": "string" }
            }
          }
        }
      }
    }
  }
}