{
  "$id": "https://raw.githubusercontent.com/usdot-jpo-ode/wzdx/main/schemas/4.2/FeedInfo.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "WZDx Feed Information",
  "description": "Describes WZDx feed header information such as metadata, contact information, and data sources",
  "type": "object",
  "properties": {
    "publisher": {
      "description": "The organization responsible for publishing the feed",
      "type": "string"
    },
    "contact_name": {
      "description": "The name of the individual or group responsible for the data feed",
      "type": "string"
    },
    "contact_email": {
      "description": "The email address of the individual or group responsible for the data feed",
      "type": "string",
      "format": "email"
    },
    "update_frequency": {
      "description": "The frequency in seconds at which the data feed is updated",
      "type": "integer",
      "minimum": 1
    },
    "update_date": {
      "description": "The UTC date and time when the GeoJSON file (representing the instance of the feed) was generated",
      "type": "string",
      "format": "date-time"
    },
    "version": {
      "description": "The WZDx specification version used to create the data feed, in 'major.minor' format",
      "type": "string",
      "pattern": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)$"
    },
    "license": {
      "description": "The URL of the license that applies to the data in the WZDx feed. This *must* be the string \"https://creativecommons.org/publicdomain/zero/1.0/\"",
      "enum": [
        "https://creativecommons.org/publicdomain/zero/1.0/"
      ]
    },
    "data_sources": {
      "description": "A list of specific data sources for the road event data in the feed",
      "type": "array",
      "items": {
        "$ref": "#/definitions/FeedDataSource"
      },
      "minItems": 1
    }
  },
  "required": [
    "update_date",
    "version",
    "publisher",
    "data_sources"
  ],
  "definitions": {
    "FeedDataSource": {
      "title": "WZDx Feed Data Source",
      "description": "Describes information about a specific data source used to build the work zone data feed",
      "type": "object",
      "properties": {
        "data_source_id": {
          "description": "Unique identifier for the organization providing work zone data. It is recommended that this identifier is a Universally Unique IDentifier (UUID) as defined in [RFC 4122](https://datatracker.ietf.org/doc/html/rfc4122).",
          "type": "string"
        },
        "organization_name": {
          "description": "The name of the organization for the authoritative source of the work zone data",
          "type": "string"
        },
        "contact_name": {
          "description": "The name of the individual or group responsible for the data source",
          "type": "string"
        },
        "contact_email": {
          "description": "The email address of the individual or group responsible for the data source",
          "type": "string",
          "format": "email"
        },
        "update_frequency": {
          "description": "The frequency in seconds at which the data source is updated",
          "type": "integer",
          "minimum": 1
        },
        "update_date": {
          "description": "The UTC date and time when the data source was last updated",
          "type": "string",
          "format": "date-time"
        },
        "lrs_type": {
          "description": "**DEPRECATED** Describes the type of linear referencing system used for the milepost measurements",
          "type": "string"
        },
        "lrs_url": {
          "description": "**DEPRECATED** A URL where additional information on the LRS information and transformation information is stored",
          "type": "string",
          "format": "uri"
        },
        "location_verify_method": {
          "description": "***DEPRECATED***The method used to verify the accuracy of the location information",
          "type": "string"
        }
      },
      "required": [
        "data_source_id",
        "organization_name"
      ]
    }
  }
}