<!DOCTYPE html>
<html>
<head>
  <script src="face-api.js"></script>
  <script src="js/commons.js"></script>
  <script src="js/faceDetectionControls.js"></script>
  <script src="js/imageSelectionControls.js"></script>
  <script src="js/bbt.js"></script>
  <link rel="stylesheet" href="styles.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/css/materialize.css">
  <script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
</head>
<body>
  <div id="navbar"></div>
  <div class="center-content page-container">

    <div class="progress" id="loader">
      <div class="indeterminate"></div>
    </div>
    <div style="position: relative" class="margin">
      <img id="inputImg" src="" style="max-width: 800px;" />
      <canvas id="overlay" />
    </div>

    <div class="row side-by-side">

      <!-- face_detector_selection_control -->
      <div id="face_detector_selection_control" class="row input-field" style="margin-right: 20px;">
        <select id="selectFaceDetector">
          <option value="ssd_mobilenetv1">SSD Mobilenet V1</option>
          <option value="tiny_face_detector">Tiny Face Detector</option>
        </select>
        <label>Select Face Detector</label>
      </div>
      <!-- face_detector_selection_control -->

      <!-- image_selection_control -->
      <div id="image_selection_control"></div>
        <div id="selectList"></div>
        <div class="row">
          <label for="imgUrlInput">Get image from URL:</label>
          <input id="imgUrlInput" type="text" class="bold">
        </div>
        <button
          class="waves-effect waves-light btn"
          onclick="loadImageFromUrl()"
        >
          Ok
        </button>
        <input id="queryImgUploadInput" type="file" class="waves-effect btn bold" onchange="loadImageFromUpload()" accept=".jpg, .jpeg, .png">
      <div id="image_selection_control"></div>
      <!-- image_selection_control -->

    </div>

    <!-- ssd_mobilenetv1_controls -->
    <span id="ssd_mobilenetv1_controls">
      <div class="row side-by-side">
        <div class="row">
          <label for="minConfidence">Min Confidence:</label>
          <input disabled value="0.5" id="minConfidence" type="text" class="bold">
        </div>
        <button
          class="waves-effect waves-light btn"
          onclick="onDecreaseMinConfidence()"
        >
          <i class="material-icons left">-</i>
        </button>
        <button
          class="waves-effect waves-light btn"
          onclick="onIncreaseMinConfidence()"
        >
          <i class="material-icons left">+</i>
        </button>
      </div>
    </span>
    <!-- ssd_mobilenetv1_controls -->

    <!-- tiny_face_detector_controls -->
    <span id="tiny_face_detector_controls">
      <div class="row side-by-side">
        <div class="row input-field" style="margin-right: 20px;">
          <select id="inputSize">
            <option value="" disabled selected>Input Size:</option>
            <option value="160">160 x 160</option>
            <option value="224">224 x 224</option>
            <option value="320">320 x 320</option>
            <option value="416">416 x 416</option>
            <option value="512">512 x 512</option>
            <option value="608">608 x 608</option>
          </select>
          <label>Input Size</label>
        </div>
        <div class="row">
          <label for="scoreThreshold">Score Threshold:</label>
          <input disabled value="0.5" id="scoreThreshold" type="text" class="bold">
        </div>
        <button
          class="waves-effect waves-light btn"
          onclick="onDecreaseScoreThreshold()"
        >
          <i class="material-icons left">-</i>
        </button>
        <button
          class="waves-effect waves-light btn"
          onclick="onIncreaseScoreThreshold()"
        >
          <i class="material-icons left">+</i>
        </button>
      </div>
    </span>
    <!-- tiny_face_detector_controls -->

  </body>

  <script>
    let faceMatcher = null

    async function updateResults() {
      if (!isFaceDetectionModelLoaded()) {
        return
      }

      const inputImgEl = $('#inputImg').get(0)

      const options = getFaceDetectorOptions()
      const results = await faceapi
        .detectAllFaces(inputImgEl, options)
        .withFaceLandmarks()
        .withFaceDescriptors()

      drawFaceRecognitionResults(results)
    }

    function drawFaceRecognitionResults(results) {
      const canvas = $('#overlay').get(0)
      const inputImgEl = $('#inputImg').get(0)

      faceapi.matchDimensions(canvas, inputImgEl)
      // resize detection and landmarks in case displayed image is smaller than
      // original size
      const resizedResults = faceapi.resizeResults(results, inputImgEl)

      resizedResults.forEach(({ detection, descriptor }) => {
        const label = faceMatcher.findBestMatch(descriptor).toString()
        const options = { label }
        const drawBox = new faceapi.draw.DrawBox(detection.box, options)
        drawBox.draw(canvas)
      })
    }

    async function run() {
      // load face detection, face landmark model and face recognition models
      await changeFaceDetector(selectedFaceDetector)
      await faceapi.loadFaceLandmarkModel('/')
      await faceapi.loadFaceRecognitionModel('/')

      // initialize face matcher with 1 reference descriptor per bbt character
      faceMatcher = await createBbtFaceMatcher(1)

      // start processing image
      updateResults()
    }

    $(document).ready(function() {
      renderNavBar('#navbar', 'bbt_face_recognition')
      initImageSelectionControls()
      initFaceDetectionControls()
      run()
    })
  </script>
</body>
</html>