Djoser

'use strict';

function djoser(base, increment) {
  let stepAreas = [];
  let stepCounter = 0;

  for (let i = base; i > 0; i -= 2, stepCounter++) {
    stepAreas.push(i * i);
  }

  let pyramidHeight = stepCounter * increment;

  //All areas of the outer layers
  let outerLayers = outerLayerExtractor(stepAreas);
  let innerLayers = stoneExtractor(stepAreas);
  let goldArea = stepAreas[stepAreas.length - 1];

  //Multiply by the height
  let incrementedMarble = incrementOuterLayers(outerLayers, increment);
  let incrementedStone = incrementOuterLayers(innerLayers, increment);

  let incrementedLapis = lapisLazuli(incrementedMarble);
  let incrementedGold = goldArea * increment;

  //Material Sums
  let stoneSum = incrementedStone.reduce((a, b) => a + b, 0);
  let marbleSum = incrementedMarble.reduce((a, b) => a + b, 0);
  let lapisSum = incrementedLapis.reduce((a, b) => a + b, 0);
  marbleSum -= lapisSum;

  //Output
  console.log(`Stone required: ${Math.ceil(stoneSum)}`);
  console.log(`Marble required: ${Math.ceil(marbleSum)}`);
  console.log(`Lapis Lazuli required: ${Math.ceil(lapisSum)}`);
  console.log(`Gold required: ${Math.ceil(incrementedGold)}`);
  console.log(`Final pyramid height: ${Math.floor(pyramidHeight)}`);

  //Function Declarations
  function outerLayerExtractor(arr) {
    let outerLayerAreas = [];

    for (let i = 0; i < arr.length - 1; i++) {
      for (let j = i + 1; j > i; j--) {
        let current = arr[i] - arr[j];
        outerLayerAreas.push(current);
      }
    }
    return outerLayerAreas;
  }

  function incrementOuterLayers(arr, inc) {
    let incremented = [];
    for (let i = 0; i < arr.length; i++) {
      incremented.push(arr[i] * inc);
    }
    return incremented;
  }

  function stoneExtractor(arr) {
    let modifiedArray = arr;
    modifiedArray.shift();
    return modifiedArray;
  }

  function lapisLazuli(arr) {
    let lazuli = [];
    let counter = 1;

    for (let i = 0; i < arr.length; i++, counter++) {
      if (counter % 5 === 0) {
        lazuli.push(arr[i]);
      }
    }
    return lazuli;
  }
}

djoser(11, 0.75);