WebSearchEngine/index.html at main · kevintsq/WebSearchEngine · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <title>Kevin Tan's Search Engine</title>
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
    integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">
</head>

<body>
  <div class="container">
    <div class="row justify-content-center">
      <div class="col-md-6">
        <h1 class="text-center mt-5 mb-4">Welcome to Kevin Tan's Search Engine!</h1>
        <div class="row justify-content-center">
          <div class="col">
            <input type="text" class="form-control my-2" id="searchInput" placeholder="Please input your query here..."
              required>
          </div>
          <div class="col-auto">
            <button class="btn btn-outline-primary my-2" id="searchButton" type="button"
              onclick=search()>Search</button>
          </div>
        </div>
      </div>
    </div>
    <div class="row justify-content-center mt-3">
      <div class="col-md-6">
        <div class="row align-items-center">
          <div class="col my-1">
            <div class="form-check">
              <input class="form-check-input" type="radio" name="queryTypeRadio" id="semanticRadio" value="true"
                checked>
              <label class="form-check-label" for="semanticRadio">Semantic</label>
            </div>
            <div class="form-check">
              <input class="form-check-input" type="radio" name="queryTypeRadio" id="rerankingRadio" value="false">
              <label class="form-check-label" for="rerankingRadio">Reranking</label>
            </div>
          </div>
          <div class="col my-1">
            <div class="form-check">
              <input class="form-check-input" type="radio" name="queryTypeRadio" id="conjunctiveRadio" value="false">
              <label class="form-check-label" for="conjunctiveRadio">Conjunctive</label>
            </div>
            <div class="form-check">
              <input class="form-check-input" type="radio" name="queryTypeRadio" id="disjunctiveRadio" value="false">
              <label class="form-check-label" for="disjunctiveRadio">Disjunctive</label>
            </div>
          </div>
          <div class="col my-1">
            <label for="resultCount" class="form-label"># Results</label>
            <input type="number" class="form-control form-control-sm" id="resultCount" min="1" value="10"
              aria-label="Number of Results">
          </div>
          <div class="col my-1">
            <label for="snippetLength" class="form-label">Snippet Length</label>
            <input type="number" class="form-control form-control-sm" id="snippetLength" min="1" value="200"
              aria-label="Snippet Length">
          </div>
        </div>
      </div>
    </div>
    <div class="row justify-content-center">
      <div class="col-md-8">
        <h2 class="text-center mt-5 mb-2">Results</h2>
        <p class="text-center mb-4" id="searchInfo"></p>
        <ul class="list-group mt-3 mb-5" id="searchResults">
        </ul>
      </div>
    </div>
  </div>

  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/axios.min.js"></script>
  <script>
    // set data-bs-theme="dark" in <body> to enable dark mode if the user's OS is in dark mode
    if (window.matchMedia) {
      darkModeMediaQuery = window.matchMedia('(prefers-color-scheme: dark)');
      if (darkModeMediaQuery.matches) {
        document.body.setAttribute('data-bs-theme', 'dark');
      }
      darkModeMediaQuery.addEventListener('change', event => {
        if (event.matches) {
          document.body.setAttribute('data-bs-theme', 'dark');
        } else {
          document.body.removeAttribute('data-bs-theme');
        }
      });
    }

    function emphasizeWordsWithNonAlnum(text, wordsToEmphasize) {
      const tokens = text.split(/(\P{L}+)/u);
      const lowerCaseWordsToEmphasize = wordsToEmphasize.map(word => word.toLowerCase());
      const emphasizedText = tokens.map(token => {
        if (!/\P{L}+/u.test(token) && lowerCaseWordsToEmphasize.includes(token.toLowerCase())) {
          return `<b>${token}</b>`;
        } else {
          return token;
        }
      });
      return emphasizedText.join('');
    }

    searching = false;

    document.getElementById('searchInput').onkeydown = event => {
      if (event.keyCode === 13 && !searching) {
        search();
      }
    };

    function search() {
      query = document.getElementById('searchInput').value.trim();
      if (query === '') {
        return;
      }

      if (document.getElementById('semanticRadio').checked) {
        query_type = 2;
      } else if (document.getElementById('rerankingRadio').checked) {
        query_type = 3;
      } else if (document.getElementById('conjunctiveRadio').checked) {
        query_type = 0;
      } else {
        query_type = 1;
      }
      n_results = parseInt(document.getElementById('resultCount').value);
      snippet_len = parseInt(document.getElementById('snippetLength').value);

      searching = true;
      searchButton = document.getElementById('searchButton');
      searchButton.disabled = true;
      searchButton.innerHTML = 'Searching...';

      axios.post(window.origin, {
        query: query,
        query_type: query_type,
        n_results: n_results,
        snippet_len: snippet_len
      }, {
        headers: {
          'Content-Type': 'application/json'
        }
      })
        .then(response => {
          resultsList = document.getElementById('searchResults');
          resultsList.innerHTML = '';

          result = response.data;
          if (result.count === 0) {
            document.getElementById('searchInfo').innerHTML = `No results found. Checked in ${result.time >= 1000 ? (result.time / 1000).toFixed(2) + ' milli' : result.time.toFixed(2) + ' micro'}seconds.`;
            searching = false;
            searchButton.disabled = false;
            searchButton.innerHTML = 'Search';
            return;
          } else if (result.cached) {
            document.getElementById('searchInfo').innerHTML = `Found ${query_type >= 2 ? 'the following' : result.count} results from cache in ${result.time.toFixed(2)} microseconds.`;
          } else {
            document.getElementById('searchInfo').innerHTML = `Found ${query_type >= 2 ? 'the following' : result.count} results in ${(result.time / 1000).toFixed(2)} milliseconds.`;
          }

          result.data.forEach(result => {
            listItem = document.createElement('li');
            listItem.classList.add('list-group-item');
            listItem.innerHTML = `
<div class="mt-3 mx-2">
  <h5>${result.rank}.
    <span class="badge bg-secondary mx-2">${result.score.toFixed(2)}</span>
    ${query_type >= 2 ? '' : result.freqs.map((freq) => `${freq[0]}: ${freq[1]}`).join(', ')}
  </h5>
  <a href="${result.url}" target="_blank" class="d-inline-block text-truncate" style="max-width: 100%;">${result.url}</a>
  <p>...${emphasizeWordsWithNonAlnum(result.snippet, query.toLowerCase().split(/\P{L}/u))}...</p>
</div>`;
            resultsList.appendChild(listItem);
          });
          searching = false;
          searchButton.disabled = false;
          searchButton.innerHTML = 'Search';
        })
        .catch(error => {
          searching = false;
          document.getElementById('searchInfo').innerHTML = `Operation currently not supported: ${error.response.data.message}`;
          searchButton.disabled = false;
          searchButton.innerHTML = 'Search';
        });
    }
  </script>
</body>

</html>