sudoku-utils.js

import Module from "./main.js"
const N = 9

const matrix = (rows, cols) => new Array(cols).fill(0).map((o, i) => new Array(rows).fill(0))

const getSudokuGrid = () => {
  let sudokuMatrix = matrix(9, 9);
  $('.form-control').each(function(i, obj) {
    sudokuMatrix[obj.id.charAt(0)][obj.id.charAt(1)] = $(obj).val() == "" ? 0 : parseInt($(obj).val());
  });
  return sudokuMatrix;
}

const setSudokuGrid = (resultMatrix) => {
  $('.form-control').each(function(i, obj) {
    $(obj).val(resultMatrix[obj.id.charAt(0)][obj.id.charAt(1)])
  })
}

const resetSudokuGrid = () => {
  $('.form-control').each(function(i, obj) {
    $(obj).val("");
  })
}

const makePtrOfArray = (myModule) => {
  let sudokuMatrix = getSudokuGrid();
  const arrayPtr = myModule._calloc(N, 4);
  for (let i = 0; i < N; i++) {
    let rowsPtr = myModule._calloc(N, 4);
    myModule.setValue(arrayPtr + i * 4, rowsPtr, "i32");
    for (let j = 0; j < N; j++) {
      myModule.setValue(rowsPtr + j * 4, sudokuMatrix[i][j], "i32");
    }
  }
  return arrayPtr;
}

const getArrayFromPtr = (myModule, ptr) => {
  let resultMatrix = matrix(9, 9);
  for (let i = 0; i < N; i++) {
    let rowsPtr = myModule.getValue(ptr + i * 4, "i32");
    for (let j = 0; j < N; j++) {
      resultMatrix[i][j] =  myModule.getValue(rowsPtr + j * 4, "i32");
    }
  }
  return resultMatrix;
}

const resetBtn = document.getElementById("reset-btn");
resetBtn.onclick = () => {
  resetSudokuGrid();
}

Module().then(function (mymod) {
  let solveBtn = document.getElementById("solve-btn");
  solveBtn.onclick = () => {
    let arrPtr = makePtrOfArray(mymod);
    let startDate = window.performance.now();
    let solverResult = mymod._SolveSudoku(arrPtr);
    let endDate = window.performance.now();
    let resultMatrix = getArrayFromPtr(mymod, arrPtr);
    setSudokuGrid(resultMatrix);
    alert(`${solverResult ? 'Solved!': 'No results found'} Excecution time: ${(endDate - startDate)} ms`);
  }
})