{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/farmos/main/json-schema/farmos-asset.json",
  "title": "farmOS Asset",
  "description": "Represents a physical or logical farm asset in the farmOS JSON:API. Assets include land, animals, equipment, plants, structures, water, material, seed, compost, sensors, and groups.",
  "type": "object",
  "required": ["data"],
  "properties": {
    "data": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": {
          "type": "string",
          "description": "JSON:API resource type in the format asset--[bundle]",
          "enum": [
            "asset--animal",
            "asset--compost",
            "asset--equipment",
            "asset--group",
            "asset--land",
            "asset--material",
            "asset--plant",
            "asset--product",
            "asset--seed",
            "asset--sensor",
            "asset--structure",
            "asset--water"
          ]
        },
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "UUID of the asset (assigned by server on create)",
          "readOnly": true
        },
        "attributes": {
          "type": "object",
          "properties": {
            "name": {
              "type": "string",
              "description": "Human-readable name of the asset",
              "minLength": 1
            },
            "status": {
              "type": "string",
              "enum": ["active", "archived"],
              "description": "Asset lifecycle status",
              "default": "active"
            },
            "archived": {
              "type": "boolean",
              "description": "Whether the asset is archived (farmOS 4.x+)"
            },
            "notes": {
              "type": ["object", "null"],
              "description": "Rich text notes about the asset",
              "properties": {
                "value": {
                  "type": "string",
                  "description": "Note content"
                },
                "format": {
                  "type": "string",
                  "description": "Text format (e.g., default, plain_text)",
                  "default": "default"
                }
              }
            },
            "is_location": {
              "type": "boolean",
              "description": "Whether this asset can serve as a location for other assets and logs",
              "default": false
            },
            "is_fixed": {
              "type": "boolean",
              "description": "Whether the asset has a fixed, non-moving geometry",
              "default": false
            },
            "intrinsic_geometry": {
              "type": ["string", "null"],
              "description": "WKT geometry string for fixed-location assets (e.g., POINT(lon lat) or POLYGON(...))"
            },
            "geometry": {
              "type": ["string", "null"],
              "description": "Current computed geometry in WKT format (read-only, derived from logs)",
              "readOnly": true
            },
            "nickname": {
              "type": "array",
              "description": "Alternative names or nicknames for the asset",
              "items": {
                "type": "string"
              }
            },
            "id_tag": {
              "type": "array",
              "description": "Physical identification tags attached to the asset",
              "items": {
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "Tag identifier or number"
                  },
                  "type": {
                    "type": "string",
                    "description": "Tag type (e.g., ear_tag, tattoo, microchip, brand)"
                  },
                  "location": {
                    "type": "string",
                    "description": "Physical location of the tag on the animal"
                  }
                }
              }
            },
            "sex": {
              "type": ["string", "null"],
              "description": "Sex of the animal (animal assets only)",
              "enum": ["M", "F", null]
            },
            "birthdate": {
              "type": ["integer", "null"],
              "description": "Unix timestamp of animal birth date (animal assets only)"
            },
            "is_sterile": {
              "type": ["boolean", "null"],
              "description": "Whether the animal is sterile/castrated (animal assets only, renamed from is_castrated in 4.x)"
            },
            "land_type": {
              "type": ["string", "null"],
              "description": "Type of land area (land assets only): field, bed, paddock, water, structure, other"
            },
            "created": {
              "type": "integer",
              "description": "Unix timestamp of record creation",
              "readOnly": true
            },
            "changed": {
              "type": "integer",
              "description": "Unix timestamp of last modification",
              "readOnly": true
            }
          },
          "required": ["name"]
        },
        "relationships": {
          "type": "object",
          "description": "Related resources",
          "properties": {
            "parent": {
              "description": "Parent asset(s) in a hierarchy",
              "$ref": "#/$defs/toManyRelationship"
            },
            "location": {
              "description": "Current location asset(s)",
              "$ref": "#/$defs/toManyRelationship"
            },
            "image": {
              "description": "Attached image files",
              "$ref": "#/$defs/toManyRelationship"
            },
            "file": {
              "description": "Attached files",
              "$ref": "#/$defs/toManyRelationship"
            },
            "plant_type": {
              "description": "Plant type taxonomy term(s) (plant assets only)",
              "$ref": "#/$defs/toManyRelationship"
            },
            "animal_type": {
              "description": "Animal type taxonomy term (animal assets only)",
              "$ref": "#/$defs/toOneRelationship"
            }
          }
        },
        "links": {
          "$ref": "#/$defs/links"
        }
      }
    },
    "included": {
      "type": "array",
      "description": "Sideloaded related resources",
      "items": {
        "type": "object"
      }
    },
    "links": {
      "$ref": "#/$defs/links"
    }
  },
  "$defs": {
    "links": {
      "type": "object",
      "properties": {
        "self": {
          "type": "string",
          "format": "uri"
        },
        "related": {
          "type": "string",
          "format": "uri"
        }
      }
    },
    "resourceIdentifier": {
      "type": "object",
      "required": ["type", "id"],
      "properties": {
        "type": {
          "type": "string"
        },
        "id": {
          "type": "string",
          "format": "uuid"
        }
      }
    },
    "toOneRelationship": {
      "type": "object",
      "properties": {
        "data": {
          "oneOf": [
            { "$ref": "#/$defs/resourceIdentifier" },
            { "type": "null" }
          ]
        },
        "links": {
          "$ref": "#/$defs/links"
        }
      }
    },
    "toManyRelationship": {
      "type": "object",
      "properties": {
        "data": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/resourceIdentifier"
          }
        },
        "links": {
          "$ref": "#/$defs/links"
        }
      }
    }
  }
}