{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/science-museum-group/main/json-schema/science-museum-group-collection-object-schema.json",
  "title": "Science Museum Group Collection Object",
  "description": "A physical object or artifact in the Science Museum Group collection, returned as a JSONAPI resource",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique collection object identifier (e.g., co26704)",
      "pattern": "^co[0-9]+$",
      "examples": ["co26704", "co67234"]
    },
    "type": {
      "type": "string",
      "const": "objects",
      "description": "JSONAPI resource type"
    },
    "attributes": {
      "type": "object",
      "description": "Object attributes and metadata",
      "properties": {
        "name": {
          "type": "object",
          "description": "Name information for the object",
          "properties": {
            "value": {
              "type": "string",
              "description": "Primary name of the object"
            },
            "suffix": {
              "type": "string",
              "description": "Additional naming qualifier (e.g., date)"
            },
            "full": {
              "type": "string",
              "description": "Full display name including suffix"
            }
          },
          "required": ["value"]
        },
        "summary": {
          "type": "string",
          "description": "Brief summary description of the object"
        },
        "description": {
          "type": "string",
          "description": "Detailed curatorial description"
        },
        "date": {
          "type": "object",
          "description": "Date information for the object",
          "properties": {
            "from": {
              "type": "integer",
              "description": "Earliest associated year"
            },
            "to": {
              "type": "integer",
              "description": "Latest associated year"
            },
            "display": {
              "type": "string",
              "description": "Human-readable date string"
            },
            "note": {
              "type": "string",
              "description": "Additional date context"
            }
          }
        },
        "images": {
          "type": "object",
          "description": "Image references for the object",
          "properties": {
            "primary": {
              "type": "object",
              "description": "Primary image for the object",
              "properties": {
                "processed": {
                  "type": "object",
                  "properties": {
                    "large": {
                      "$ref": "#/$defs/ImageSize"
                    },
                    "medium": {
                      "$ref": "#/$defs/ImageSize"
                    },
                    "thumbnail": {
                      "$ref": "#/$defs/ImageSize"
                    }
                  }
                },
                "measurements": {
                  "type": "object",
                  "properties": {
                    "resolution": {
                      "type": "integer"
                    },
                    "dimensions": {
                      "type": "object",
                      "properties": {
                        "width": {"type": "integer"},
                        "height": {"type": "integer"}
                      }
                    }
                  }
                },
                "copyright": {
                  "type": "string",
                  "description": "Copyright holder"
                },
                "license": {
                  "type": "string",
                  "description": "License for use of the image"
                }
              }
            }
          }
        },
        "museums": {
          "type": "array",
          "description": "Museum codes where the object is held",
          "items": {
            "type": "string",
            "enum": ["SMG", "NRM", "NMeM", "MSI", "Locomotion"]
          }
        },
        "on_display": {
          "type": "boolean",
          "description": "Whether the object is currently on public display"
        },
        "location": {
          "type": "object",
          "description": "Gallery or storage location",
          "properties": {
            "gallery": {
              "type": "string",
              "description": "Gallery name"
            },
            "floor": {
              "type": "string",
              "description": "Floor level"
            },
            "museum": {
              "type": "string",
              "description": "Full museum name"
            },
            "museum_code": {
              "type": "string",
              "description": "Museum code"
            }
          }
        },
        "categories": {
          "type": "array",
          "description": "Collection categories for the object",
          "items": {
            "type": "string"
          }
        },
        "places": {
          "type": "array",
          "description": "Geographical associations",
          "items": {
            "type": "string"
          }
        },
        "accession_number": {
          "type": "string",
          "description": "Museum accession number"
        },
        "measurements": {
          "type": "object",
          "description": "Physical dimensions and weight",
          "properties": {
            "dimensions": {
              "type": "string"
            },
            "weight": {
              "type": "string"
            }
          }
        }
      },
      "required": ["name"]
    },
    "relationships": {
      "type": "object",
      "description": "Related resources",
      "properties": {
        "makers": {
          "type": "object",
          "properties": {
            "data": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/ResourceIdentifier"
              }
            }
          }
        },
        "people": {
          "type": "object",
          "properties": {
            "data": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/ResourceIdentifier"
              }
            }
          }
        },
        "documents": {
          "type": "object",
          "properties": {
            "data": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/ResourceIdentifier"
              }
            }
          }
        }
      }
    },
    "links": {
      "type": "object",
      "properties": {
        "self": {
          "type": "string",
          "format": "uri",
          "description": "Canonical URL for this object"
        }
      }
    }
  },
  "required": ["id", "type", "attributes"],
  "$defs": {
    "ImageSize": {
      "type": "object",
      "properties": {
        "location": {
          "type": "string",
          "format": "uri",
          "description": "Image URL"
        },
        "width": {
          "type": "integer",
          "description": "Image width in pixels"
        },
        "height": {
          "type": "integer",
          "description": "Image height in pixels"
        }
      }
    },
    "ResourceIdentifier": {
      "type": "object",
      "description": "JSONAPI resource identifier",
      "properties": {
        "type": {
          "type": "string",
          "enum": ["objects", "people", "documents"]
        },
        "id": {
          "type": "string"
        }
      },
      "required": ["type", "id"]
    }
  }
}