const wheel = document.getElementById("wheel");
const spinBtn = document.getElementById("spin-btn");
const finalValue = document.getElementById("final-value");
const winnerValue = document.getElementById("winner-value");
//Object that stores values of minimum and maximum angle for a value
const rotationValues = [
  { minDegree: 0, maxDegree: 30, value: 20 },
  { minDegree: 31, maxDegree: 90, value: 10 },
  { minDegree: 91, maxDegree: 150, value: 60 },
  { minDegree: 151, maxDegree: 210, value: 50 },
  { minDegree: 211, maxDegree: 270, value: 40 },
  { minDegree: 271, maxDegree: 330, value: 30 },
  { minDegree: 331, maxDegree: 360, value: 20 },
];
//Size of each piece
const data = [16, 16, 16, 16, 16, 16];
//background color for each piece
var pieColors = [
  "#AA4A44",
  "#68E06",
  "#FF5733",
  "#5D8AB3", // BLUE
  "#07586b", // GREEN
  "#66023c", // purple
];
//Create chart
let myChart = new Chart(wheel, {
  //Plugin for displaying text on pie chart
  plugins: [ChartDataLabels],
  //Chart Type Pie
  type: "pie",
  data: {
    //Labels(values which are to be displayed on chart)
    labels: ['10%', '20%', '30%', '40%', '50%', '60%'],
    //Settings for dataset/pie
    datasets: [
      {
        backgroundColor: pieColors,
        data: data,
      },
    ],
  },
  options: {
    //Responsive chart
    responsive: true,
    animation: { duration: 0 },
    plugins: {
      //hide tooltip and legend
      tooltip: false,
      legend: {
        display: false,
      },
      //display labels inside pie chart
      datalabels: {
        color: "#ffffff",
        formatter: (_, context) => context.chart.data.labels[context.dataIndex],
        font: { size: 24 },
      },
    },
  },
});
//display value based on the randomAngle
const valueGenerator = (angleValue) => {
  for (let i of rotationValues) {
    //if the angleValue is between min and max then display it
    if (angleValue >= i.minDegree && angleValue <= i.maxDegree) {
      //finalValue.innerHTML = `<p>Congratulations! You get: ${i.value}% off!</p>`;
      winnerValue.innerHTML = `<p>
        <div class="wrapper">
          <div id="top-value">
            <p>ABC Company</p>
            <br>
            Congratulations! <div class="lineBreak"></div>You get: ${i.value}% off!
<br>

  <div class="container mt-5" style="max-width: 500px;">
    <div id="formText">Save on home goods, <div class="lineBreak"></div>decor, and more</div>
    <br>
    <form>
      <div class="mb-3">
        <label for="product" class="form-label">Select Product</label>
        <select class="form-select" id="product" name="product">
          <option value="wall-art">Wall Art</option>
          <option value="clocks">Clocks</option>
          <option value="seasonal">Seasonal</option>
          <option value="home-decor">Home Decor</option>
          <option value="patio">Patio</option>
        </select>
      </div>
      <div class="mb-3">
        <label for="email" class="form-label">Email address</label>
        <input type="email" class="form-control" id="email" name="email" aria-describedby="emailHelp" placeholder="Enter email">
        <div id="emailHelp" class="form-text">We'll never share your email with anyone else.</div>
      </div>
      <button type="submit" class="btn" style="background-color: #C70039; color: white;">Submit</button>
    </form>
  </div>

          </div>
        </div>
      </p>`;
      spinBtn.disabled = false;
      break;
    }
  }
};

//Spinner count
let count = 0;
//100 rotations for animation and last rotation for result
let resultValue = 101;
//Start spinning
spinBtn.addEventListener("click", () => {
  spinBtn.disabled = true;
  //Empty final value
  finalValue.innerHTML = `<p>Be patient!</p>`;
  //Generate random degrees to stop at
  let randomDegree = Math.floor(Math.random() * (355 - 0 + 1) + 0);
  //Interval for rotation animation
  let rotationInterval = window.setInterval(() => {
    //Set rotation for piechart
    /*
    Initially to make the piechart rotate faster we set resultValue to 101 so it rotates 101 degrees at a time and this reduces by 1 with every count. Eventually on last rotation we rotate by 1 degree at a time.
    */
    myChart.options.rotation = myChart.options.rotation + resultValue;
    //Update chart with new value;
    myChart.update();
    //If rotation>360 reset it back to 0
    if (myChart.options.rotation >= 360) {
      count += 1;
      resultValue -= 5;
      myChart.options.rotation = 0;
    } else if (count > 15 && myChart.options.rotation == randomDegree) {
      valueGenerator(randomDegree);
      clearInterval(rotationInterval);
      count = 0;
      resultValue = 101;
    }
  }, 10);
});