zenuml-core/test-compression.html at main · mermaid-js/zenuml-core · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>ZenUML Compression Test</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }
    textarea {
      width: 100%;
      height: 200px;
      margin: 10px 0;
      font-family: monospace;
    }
    button {
      background: #007bff;
      color: white;
      border: none;
      padding: 10px 20px;
      margin: 5px;
      cursor: pointer;
      border-radius: 4px;
    }
    button:hover {
      background: #0056b3;
    }
    .output {
      background: #f4f4f4;
      padding: 10px;
      margin: 10px 0;
      border-radius: 4px;
      word-break: break-all;
    }
    .error {
      color: red;
      background: #fee;
      padding: 10px;
      margin: 10px 0;
      border-radius: 4px;
    }
    .success {
      color: green;
      background: #efe;
      padding: 10px;
      margin: 10px 0;
      border-radius: 4px;
    }
  </style>
</head>
<body>
  <h1>ZenUML Compression Test</h1>

  <h2>Test URL Parameter Encoding/Decoding</h2>
  <textarea id="zenUmlCode" placeholder="Enter ZenUML code here...">title Authentication Flow
  RET ret = A.methodA() {
  B.method() {
    if (X) {
      C.methodC() {
        a = A.methodA() {
          D.method()
        }
      }
    }
    while (Y) {
      C.methodC() {
        A.methodA()
      }
    }
   }
 }
  </textarea>

  <div>
    <button onclick="encodeAndCompress()">Encode (Gzip + Base64)</button>
    <button onclick="testDecode()">Test Decode</button>
    <button onclick="generateUrl()">Generate URL</button>
    <button onclick="clearAll()">Clear</button>
  </div>

  <h3>Encoded Output:</h3>
  <div id="encodedOutput" class="output"></div>

  <h3>URL:</h3>
  <div id="urlOutput" class="output"></div>

  <h3>Test Results:</h3>
  <div id="testResults"></div>

  <script type="module">
    import pako from 'pako';

    // Helper function to escape HTML special characters
    function escapeHtml(unsafe) {
      return unsafe
        .replace(/&/g, "&amp;")
        .replace(/</g, "&lt;")
        .replace(/>/g, "&gt;")
        .replace(/"/g, "&quot;")
        .replace(/'/g, "&#039;");
    }

    // Compression and encoding functions
    function compressAndEncode(text) {
      try {
        // Step 1: Compress with gzip
        const compressed = pako.gzip(text);

        // Step 2: Convert to base64
        let binary = '';
        const bytes = new Uint8Array(compressed);
        for (let i = 0; i < bytes.byteLength; i++) {
          binary += String.fromCharCode(bytes[i]);
        }
        const base64 = btoa(binary);

        return base64;
      } catch (error) {
        console.error('Compression error:', error);
        throw error;
      }
    }

    // Decompression and decoding functions
    function decodeAndDecompress(base64String) {
      try {
        // Step 1: Decode base64
        const binaryString = atob(base64String);

        // Step 2: Convert to Uint8Array
        const bytes = new Uint8Array(binaryString.length);
        for (let i = 0; i < binaryString.length; i++) {
          bytes[i] = binaryString.charCodeAt(i);
        }

        // Step 3: Decompress
        const decompressed = pako.ungzip(bytes, { to: 'string' });

        return decompressed;
      } catch (error) {
        console.error('Decompression error:', error);
        throw error;
      }
    }

    function encodeAndCompress() {
      const zenUmlCode = document.getElementById('zenUmlCode').value;
      const resultsDiv = document.getElementById('testResults');
      resultsDiv.innerHTML = '';

      try {
        const encoded = compressAndEncode(zenUmlCode);
        document.getElementById('encodedOutput').textContent = encoded;

        // Show compression ratio
        const originalSize = new Blob([zenUmlCode]).size;
        const compressedSize = new Blob([encoded]).size;
        const ratio = ((originalSize - compressedSize) / originalSize * 100).toFixed(2);

        resultsDiv.innerHTML = `
          <div class="success">
            Encoding successful!<br>
            Original size: ${originalSize} bytes<br>
            Encoded size: ${compressedSize} bytes<br>
            Compression: ${ratio}% smaller
          </div>
        `;
      } catch (error) {
        resultsDiv.innerHTML = `<div class="error">Encoding failed: ${escapeHtml(error.message)}</div>`;
      }
    }

    function testDecode() {
      const encoded = document.getElementById('encodedOutput').textContent;
      const resultsDiv = document.getElementById('testResults');

      if (!encoded) {
        resultsDiv.innerHTML = '<div class="error">No encoded data to decode. Please encode first.</div>';
        return;
      }

      try {
        const decoded = decodeAndDecompress(encoded);
        const original = document.getElementById('zenUmlCode').value;

        if (decoded === original) {
          resultsDiv.innerHTML = `
            <div class="success">
              Decoding successful! The decoded content matches the original.<br>
              <pre>${decoded}</pre>
            </div>
          `;
        } else {
          resultsDiv.innerHTML = `
            <div class="error">
              Decoding mismatch!<br>
              Original length: ${original.length}<br>
              Decoded length: ${decoded.length}
            </div>
          `;
        }
      } catch (error) {
        resultsDiv.innerHTML = `<div class="error">Decoding failed: ${error.message}</div>`;
      }
    }

    function generateUrl() {
      const encoded = document.getElementById('encodedOutput').textContent;

      if (!encoded) {
        document.getElementById('urlOutput').innerHTML = '<span style="color: red;">Please encode first</span>';
        return;
      }

      const baseUrl = window.location.origin + '/renderer.html';
      const url = `${baseUrl}?code=${encodeURIComponent(encoded)}`;

      document.getElementById('urlOutput').innerHTML = `
        <a href="${url}" target="_blank">${url}</a><br>
        <small>URL length: ${url.length} characters</small>
      `;
    }

    function clearAll() {
      document.getElementById('zenUmlCode').value = '';
      document.getElementById('encodedOutput').textContent = '';
      document.getElementById('urlOutput').textContent = '';
      document.getElementById('testResults').innerHTML = '';
    }

    // Test some edge cases
    function runTests() {
      const testCases = [
        { name: 'Empty string', input: '' },
        { name: 'Simple text', input: 'Hello World' },
        { name: 'Unicode', input: '你好世界 🌍' },
        { name: 'Special characters', input: '!@#$%^&*()_+-=[]{}|;:,.<>?' }
      ];

      let results = '<h3>Automated Tests:</h3>';

      for (const test of testCases) {
        try {
          const encoded = compressAndEncode(test.input);
          const decoded = decodeAndDecompress(encoded);

          if (decoded === test.input) {
            results += `<div class="success">✓ ${test.name}: PASSED</div>`;
          } else {
            results += `<div class="error">✗ ${test.name}: FAILED - Mismatch</div>`;
          }
        } catch (error) {
          results += `<div class="error">✗ ${test.name}: ERROR - ${error.message}</div>`;
        }
      }

      document.getElementById('testResults').innerHTML = results;
    }

    // Make functions available globally for onclick handlers
    window.encodeAndCompress = encodeAndCompress;
    window.testDecode = testDecode;
    window.generateUrl = generateUrl;
    window.clearAll = clearAll;

    // Run tests on page load
    runTests();
  </script>
</body>
</html>