{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://surfingdog.ai/spec/schemas/census-editions.json",
  "title": "GET /v1/census: the published editions",
  "type": "object",
  "properties": {
    "title": {
      "type": "string"
    },
    "licence": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "const": "CC-BY-4.0"
        },
        "url": {
          "type": "string",
          "const": "https://creativecommons.org/licenses/by/4.0/"
        },
        "attribution": {
          "type": "string",
          "description": "How to credit it: \"Surfing Dog census, surfingdog.ai, CC BY 4.0\"."
        },
        "credits": {
          "description": "Credit for others' data the counts rest on, given with the attribution: \"© Overture Maps Foundation\" when the cities are counted from Overture Maps places data.",
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      },
      "required": ["name", "url", "attribution"]
    },
    "editions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "edition": {
            "type": "string",
            "pattern": "^20\\d\\d-(0[1-9]|1[0-2])$",
            "description": "The month the edition records, YYYY-MM."
          },
          "title": {
            "type": "string"
          },
          "status": {
            "type": "string",
            "enum": ["published", "withdrawn"]
          },
          "as_of": {
            "type": "string",
            "format": "date-time",
            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
          },
          "published_at": {
            "type": "string",
            "format": "date-time",
            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
          },
          "url": {
            "type": "string",
            "format": "uri",
            "description": "The edition's page."
          },
          "json": {
            "type": "string",
            "format": "uri"
          },
          "csv": {
            "type": "string",
            "format": "uri"
          }
        },
        "required": ["edition", "title", "status", "as_of", "published_at", "url", "json", "csv"]
      }
    }
  },
  "required": ["title", "licence", "editions"]
}