{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/taylors/main/json-schema/taylors-checkout-schema.json",
  "title": "Koha Checkout",
  "description": "An item checkout (issue) record from the Taylor's Library Koha REST API.",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "checkout_id": { "type": "integer", "description": "Internally assigned checkout identifier" },
    "patron_id": { "type": "integer", "description": "Internal patron identifier" },
    "item_id": { "type": ["integer", "null"], "description": "Internal item identifier" },
    "library_id": { "type": ["string", "null"], "description": "Code of the library the item was checked out" },
    "checkout_date": { "type": "string", "format": "date-time", "description": "Date the item was issued" },
    "due_date": { "type": "string", "format": "date-time", "description": "Due date" },
    "checkin_date": { "type": ["string", "null"], "format": "date-time", "description": "Date the item was returned" },
    "last_renewed_date": { "type": ["string", "null"], "format": "date-time", "description": "Date the item was last renewed" },
    "renewals_count": { "type": ["integer", "null"], "description": "Number of renewals" },
    "unseen_renewals": { "type": ["integer", "null"], "description": "Number of consecutive unseen renewals" },
    "auto_renew": { "type": "boolean", "description": "Auto renewal" },
    "auto_renew_error": { "type": ["string", "null"], "description": "Auto renewal error" },
    "onsite_checkout": { "type": "boolean", "description": "On site checkout" },
    "external_id": { "type": ["string", "null"], "description": "Other identifier of checked out item, e.g. barcode" },
    "note": { "type": ["string", "null"], "description": "Issue note text" },
    "timestamp": { "type": "string", "description": "Last update time" }
  }
}