{
  "$schema"     : "http://json-schema.org/draft-04/schema#",
  "type"        : "object",
  "title"       : "internal_transfer",
  "description" : "A transfer initiates a transaction e.g get / send money. If the transfer fails no transaction is created!",
  "required"    : ["account_id", "receiver", "amount", "external_uid"],
  "properties"  : {
    "id" : {
      "$ref" : "./base_types/base_types.json#definitions/id"
    },
    "external_uid" : {
      "$ref" : "./base_types/base_types.json#definitions/external_uid"
    },
    "account_id" : {
      "description" : "Sending account.",
      "$ref"        : "./base_types/base_types.json#definitions/account_id"
    },
    "user_id" : {
      "$ref" : "./base_types/base_types.json#definitions/user_id"
    },
    "transaction_id" : {
      "$ref" : "./base_types/base_types.json#definitions/transaction_id"
    },
    "receiver" : {
      "description" : "The transaction's receiver can be defined as a numerical fidor account id, a twitter name, an email or a phone number.",
      "oneOf"       : [
        {
          "$ref" : "./base_types/base_types.json#definitions/account_id"
        },
        {
          "$ref" : "./base_types/base_types.json#definitions/twitter"
        },
        {
          "$ref" : "./base_types/base_types.json#definitions/email"
        },
        {
          "$ref" : "./base_types/base_types.json#definitions/phone"
        }
      ]
    },
    "amount" : {
      "$ref"     : "./base_types/base_types.json#definitions/amount"
    },
    "currency" : {
      "$ref"     : "./base_types/base_types.json#definitions/currency",
      "readOnly" : true
    },
    "subject" : {
      "$ref"      : "./base_types/base_types.json#definitions/subject",
      "maxLength" : 300
    },
    "state" : {
      "description" : "State of the transfer. received: Order accepted by system | mobile_tan_sent: mtan for order processing was sent | pending_receiver_message: ??? | pending_receiver : ??? | pending_backoffice_transfer: ??? | success: transfer successfully executed | failure: An error occurred during execution | expired : mtan or receiver response expired",
      "enum"        : [
        "received",
        "mobile_tan_sent",
        "pending_receiver_message",
        "pending_receiver",
        "pending_backoffice_transfer",
        "success",
        "failure",
        "expired"
      ],
      "readOnly" : true,
      "type"     : "string"
    },
    "created_at" : {
      "$ref" : "./base_types/base_types.json#definitions/created_at"
    },
    "updated_at" : {
      "$ref" : "./base_types/base_types.json#definitions/updated_at"
    }
  },
  "links" : [
    {
      "rel"  : "self",
      "href" : "internal_transfers/{id}"
    },
    {
      "rel"        : "instances",
      "href"       : "internal_transfers",
      "properties" : {
        "filter[account_ids]" : {
          "title"  : "Find internal transfers belonging to the given account ids. Single id or multiple ids comma-separated.",
          "format" : "date-time",
          "type"   : "string"
        },
        "filter[created_at_from]" : {
          "title"  : "Creation date filter from >= date",
          "format" : "date-time",
          "type"   : "string"
        },
        "filter[created_at_to]" : {
          "title"  : "Creation date filter to <= date",
          "format" : "date-time",
          "type"   : "string"
        },
        "filter[states]" : {
          "title" : "Filter by single or multiple csv delimited states",
          "enum"  : [
            "received",
            "mobile_tan_sent",
            "pending_receiver_message",
            "pending_receiver",
            "pending_backoffice_transfer",
            "success",
            "failure",
            "expired"
          ],
          "type" : "string"
        },
        "page" : {
          "title"       : "Page",
          "description" : "In paginated results set the page to look for",
          "type"        : "integer"
        },
        "per_page" : {
          "title"       : "Per page",
          "description" : "Results per page. Default is 10, max is 100",
          "type"        : "integer"
        },
        "sort" : {
          "title" : "Sort",
          "enum"  : [
            "ASC",
            "DESC"
          ],
          "description" : "Sort the results in ASC or DESC",
          "type"        : "string"
        }
      }
    },
    {
      "rel"    : "create",
      "href"   : "internal_transfers",
      "method" : "POST"
    }
  ]
}