const util = require("util");

const input = [
  {
    id: 2,
    first_name: "Javier",
    last_name: "Sotomayor",
    email: "jsotomayor@gmail.com",
    profession: "Endocrinologist",
    "appointment.id": 1,
    "appointment.patient_id": 1,
    "appointment.doctor_operation_time_id": 1,
    "appointment.height": null,
    "appointment.weight": null,
    "appointment.glucotest": null,
    "appointment.reason": "No reason",
    "appointment.notes": "Some notes",
    "appointment.dot.id": 1,
    "appointment.dot.doctor_id": 2,
    "appointment.dot.operation_time_id": 1,
    "appointment.dot.operation_time.id": 1,
    "appointment.dot.operation_time.start": "2018-06-25T13:00:00.000Z",
    "appointment.dot.operation_time.end": "2018-06-25T14:00:00.000Z"
  },
  {
    id: 2,
    first_name: "Javier",
    last_name: "Sotomayor",
    email: "jsotomayor@gmail.com",
    profession: "Endocrinologist",
    "appointment.id": 2,
    "appointment.patient_id": 1,
    "appointment.doctor_operation_time_id": 2,
    "appointment.height": null,
    "appointment.weight": null,
    "appointment.glucotest": null,
    "appointment.reason": "No reason",
    "appointment.notes": "Some notes",
    "appointment.dot.id": 2,
    "appointment.dot.doctor_id": 2,
    "appointment.dot.operation_time_id": 3,
    "appointment.dot.operation_time.id": 3,
    "appointment.dot.operation_time.start": "2018-06-25T16:00:00.000Z",
    "appointment.dot.operation_time.end": "2018-06-25T17:00:00.000Z"
  },
  {
    id: 2,
    first_name: "Javier",
    last_name: "Sotomayor",
    email: "jsotomayor@gmail.com",
    profession: "Endocrinologist",
    "appointment.id": 7,
    "appointment.patient_id": 1,
    "appointment.doctor_operation_time_id": 6,
    "appointment.height": null,
    "appointment.weight": null,
    "appointment.glucotest": null,
    "appointment.reason": "Body health control",
    "appointment.notes": "Some notes for appointment with patient_id =1",
    "appointment.dot.id": 6,
    "appointment.dot.doctor_id": 2,
    "appointment.dot.operation_time_id": 19,
    "appointment.dot.operation_time.id": 19,
    "appointment.dot.operation_time.start": "2018-06-27T16:00:00.000Z",
    "appointment.dot.operation_time.end": "2018-06-27T17:00:00.000Z"
  },
  {
    id: 2,
    first_name: "Javier",
    last_name: "Sotomayor",
    email: "jsotomayor@gmail.com",
    profession: "Endocrinologist",
    "appointment.id": 8,
    "appointment.patient_id": 1,
    "appointment.doctor_operation_time_id": 7,
    "appointment.height": null,
    "appointment.weight": null,
    "appointment.glucotest": null,
    "appointment.reason": "Body health control",
    "appointment.notes": "Some notes for appointment with patient_id =1",
    "appointment.dot.id": 7,
    "appointment.dot.doctor_id": 2,
    "appointment.dot.operation_time_id": 25,
    "appointment.dot.operation_time.id": 25,
    "appointment.dot.operation_time.start": "2018-06-28T13:00:00.000Z",
    "appointment.dot.operation_time.end": "2018-06-28T14:00:00.000Z"
  }
];

function parser(json) {
  let newObject = {};
  Object.keys(json).forEach(key => {
    const newKeys = key.split(".");
    const lastKey = newKeys.pop();
    let pointer = newObject;
    newKeys.forEach(newKey => {
      if (pointer[newKey] === undefined) pointer[newKey] = {};
      pointer = pointer[newKey];
    });
    pointer[lastKey] = json[key];
  });
  return newObject;
}

const output = input.map(i => parser(i));

console.log("[INPUT]: ", util.inspect(input, false, null));
console.log("[OUTPUT]: ", util.inspect(output, false, null));