/geofence/{id}

// Structural projection only: add semantic mappings after entitled validation.
const targetParameters=new Set(["path:id"]);
const targetBody=new Set(["buffer","geometry","name"]);
const requiredParameters=["path:id"];
const requiredBody=[];

const project=(source,allowed)=>Object.fromEntries(Object.entries(source??{}).filter(([key])=>allowed.has(key)));
export function adapt(source={}){
  const parameters=project(source.parameters,targetParameters);
  const body=project(source.body,targetBody);
  const missing=[...requiredParameters.filter(key=>parameters[key]==null),...requiredBody.filter(key=>body[key]==null)];
  return {target:{parameters,body},missing,dropped:{parameters:Object.keys(source.parameters??{}).filter(key=>!targetParameters.has(key)),body:Object.keys(source.body??{}).filter(key=>!targetBody.has(key))}};
}