{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://drafts.opds.io/schema/authentication.schema.json",
  "title": "OPDS Authentication Document",
  "type": "object",
  "properties": {
    "title": {
      "description": "Title of the Catalog being accessed",
      "type": "string"
    },
    "id": {
      "description": "Unique identifier for the Catalog provider and canonical location for the Authentication Document",
      "type": "string",
      "format": "uri"
    },
    "description": {
      "description": "A description of the service being displayed to the user",
      "type": "string"
    },
    "links": {
      "type": "array",
      "items": {
        "$ref": "https://readium.org/webpub-manifest/schema/link.schema.json"
      },
      "uniqueItems": true
    },
    "authentication": {
      "description": "A list of supported Authentication Flows",
      "type": "array",
      "items": {
        "properties": {
          "type": {
            "type": "string",
            "format": "uri"
          },
          "links": {
            "type": "array",
            "items": {
              "$ref": "https://readium.org/webpub-manifest/schema/link.schema.json"
            },
            "uniqueItems": true
          },
          "labels": {
            "type": "object",
            "properties": {
              "login": {
                "type": "string"
              },
              "password": {
                "type": "string"
              }
            }
          }
        },
        "required": ["type"]
      },
      "uniqueItems": true
    }
  },
  "required": [
    "authentication",
    "title",
    "id"
  ]
}