const R = require('ramda');

const {sort, sortBy, sortWith, descend, prop, ascend} = R;

const sample = [

    {name: "Sally", age: 29, height: 65},

    {name: "Zac", age: 29, height: 72},

    {name: "John", age: 32, height: 61},

    {name: "Lisa", age: 28, height: 63},

    {name: "Bob", age: 29, height: 66},

    {name: "Allen", age: 29, height: 66}

];

const heightDescending = descend(prop('height'));

const ageDescending = descend(prop('age'));

const nameAscending = ascend(prop('name'));

const sortWithCondition = sortWith([

                                       heightDescending,

                                       ageDescending,

                                       nameAscending

                                   ]);

const result = sortWithCondition(sample);

/*

* [ { name: 'Zac', age: 29, height: 72 },

  { name: 'Allen', age: 29, height: 66 },

  { name: 'Bob', age: 29, height: 66 },

  { name: 'Sally', age: 29, height: 65 },

  { name: 'Lisa', age: 28, height: 63 },

  { name: 'John', age: 32, height: 61 } ]

* */

console.log(result);

/*

* sort: take function

* */

const sortByNameDescending = sort(descend(prop('name')));

const result1 = sortByNameDescending(sample);

/*

* [ { name: 'Zac', age: 29, height: 72 },

  { name: 'Sally', age: 29, height: 65 },

  { name: 'Lisa', age: 28, height: 63 },

  { name: 'John', age: 32, height: 61 },

  { name: 'Bob', age: 29, height: 66 },

  { name: 'Allen', age: 29, height: 66 } ]

* */

console.log("sortByNameDescending:", result1);

/*

* sortBy: take prop

* */

const age = prop('age');

const result2 = sortBy(age);

/*

* [ { name: 'Lisa', age: 28, height: 63 },

  { name: 'Sally', age: 29, height: 65 },

  { name: 'Zac', age: 29, height: 72 },

  { name: 'Bob', age: 29, height: 66 },

  { name: 'Allen', age: 29, height: 66 },

  { name: 'John', age: 32, height: 61 } ]

* */

console.log(result2(sample));