GMapsFix/index.js at main · yc97463/GMapsFix · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
const Koa = require('koa');
const Router = require('@koa/router');
const serve = require('koa-static');
const path = require('path');
const https = require('https');

const app = new Koa();
const router = new Router();

app.use(serve(path.join(__dirname, 'public')));

function extractMetadata(html, url) {
  const metadata = { og: {} };

  // Extract title
  const titleMatch = html.match(/<meta\s+content="([^"]+)"\s+property="og:title">/i);
  if (titleMatch) {
    metadata.og.title = titleMatch[1].trim();
  }

  // Extract description
  const descriptionMatch = html.match(/<meta\s+content="([^"]+)"\s+property="og:description">/i);
  if (descriptionMatch) {
    metadata.og.description = descriptionMatch[1].trim();
  }

  // Extract image
  const imageMatch = html.match(/<meta\s+content="([^"]+)"\s+property="og:image">/i);
  if (imageMatch) {
    // metadata.og.image = imageMatch[1].trim();
    // parase to `&amp`
    metadata.og.image = imageMatch[1].replace(/&amp;/g, '&');
  }

  // Extract image dimensions
  const imageWidthMatch = html.match(/<meta\s+content="(\d+)"\s+property="og:image:width">/i);
  const imageHeightMatch = html.match(/<meta\s+content="(\d+)"\s+property="og:image:height">/i);
  if (imageWidthMatch && imageHeightMatch) {
    metadata.og.imageWidth = imageWidthMatch[1];
    metadata.og.imageHeight = imageHeightMatch[1];
  }

  // Extract coordinates from URL
  const coordsMatch = url.match(/@(-?\d+\.\d+),(-?\d+\.\d+)/);
  if (coordsMatch) {
    metadata.coords = {
      lat: coordsMatch[1],
      lng: coordsMatch[2]
    };
  }

  console.log('Extracted metadata:', metadata);
  return metadata;
}

async function fetchMetadata(url) {
  return new Promise((resolve, reject) => {
    https.get(url, (res) => {
      if (res.statusCode === 302 || res.statusCode === 301) {
        // Follow redirect
        return fetchMetadata(res.headers.location).then(resolve).catch(reject);
      }

      let html = '';
      res.on('data', (chunk) => {
        html += chunk;
        if (html.includes('</head>')) {
          res.destroy(); // Stop the stream once we've got the head
          resolve(extractMetadata(html, url));
        }
      });
      res.on('end', () => {
        resolve(extractMetadata(html, url));
      });
    }).on('error', reject);
  });
}

async function generateHtmlWithMetadata(url) {
  const metadata = await fetchMetadata(url);

  let title = metadata.og.title || 'Google Maps Location';
  title += ' &#128588; Google Maps 分享連結預覽好幫手';

  let description = metadata.og.description || "View this location on Google Maps";
  if (metadata.coords) {
    description += ` (${metadata.coords.lat}, ${metadata.coords.lng})`;
  }

  let img = metadata.og.image || "https://maps.gstatic.com/mapfiles/maps_lite/images/2x/ic_map_center_marker.png";

  let html = `
  <!DOCTYPE html>
  <html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>${title}</title>
    <meta name="title" content="${title}" />
    <meta name="description" content="${description}" />

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta property="og:url" content="${url}" />
    <meta property="og:site_name" content="${title}" />
    <meta property="og:title" content="${title}" />
    <meta property="og:description" content="${description}" />
    <meta property="og:image" content="${img}" />
    ${metadata.og.imageWidth ? `<meta property="og:image:width" content="${metadata.og.imageWidth}" />` : ''}
    ${metadata.og.imageHeight ? `<meta property="og:image:height" content="${metadata.og.imageHeight}" />` : ''}

    <!-- Twitter -->
    <meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:url" content="${url}" />
    <meta name="twitter:title" content="${title}" />
    <meta name="twitter:description" content="${description}" />
    <meta name="twitter:image" content="${img}" />

    <!-- Telegram -->
    <meta property="og:image" content="${img}" />
    <meta property="telegram_channel" content="turbolabit">

    <!-- Redirect to Google Maps -->
    <meta http-equiv="refresh" content="2; url = ${url}" />

    <style>
      @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC&display=swap');
      * {
        font-family: "Heiti TC", "Noto Sans TC", sans-serif;
      }
      .message {
        margin: 20px 10px;
      }
      .message a {
        background: #0D5C33;
        padding: 4px 10px;
        color: #FFF;
        border-radius: 15px;
        text-decoration: none;
      }
      .message a:hover, .message a:active {
        color: #FFF;
        text-decoration: none;
      }
      .message a::before {
        content: "🔗 ";
      }
    </style>

  </head>
  <body>
    <div class="message">
      Google Maps 分享連結預覽好幫手 🙌 正在帶您前往 <a href="${url}">${url}</a>。
    </div>
  </body>
  </html>
  `;
  return html;
}

// Keep your existing routes
router.get('/', async (ctx, next) => {
  let title = "Google Maps 分享連結預覽好幫手 🙌";
  let description = "分享 Google Maps 連結有預覽資訊的神奇魔法！✨";
  let img = `https://maps.dstw.dev/og.jpg`
  let url = `https://maps.dstw.dev/`
  let html = `
  <!DOCTYPE html>
  <html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>${title}</title>
    <meta name="title" content="${title}" />
    <meta name="description" content="${description}" />

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta property="og:url" content="${url}" />
    <meta property="og:site_name" content="${title}" />
    <meta property="og:title" content="${title}" />
    <meta property="og:description" content="${description}" />
    <meta property="og:image" content="${img}" />

    <!-- Twitter -->
    <meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:url" content="${url}" />
    <meta name="twitter:title" content="${title}" />
    <meta name="twitter:description" content="${description}" />
    <meta name="twitter:image" content="${img}" />

    <!-- Telegram -->
    <meta property="og:image" content="${img}" />
    <meta property="telegram_channel" content="turbolabit">

    <!-- Redirect to README -->
    <meta http-equiv="refresh" content="0; url = https://github.com/yc97463/GMapsFix/blob/main/README.md" />
  </head>
  <body></body>
  </html>
  `
  ctx.body = html;
  ctx.type = 'text/html';
});

router.get('/maps/:id', async (ctx, next) => {
  const url = `https://goo.gl/maps/${ctx.params.id}?_imcp=1`;
  ctx.body = await generateHtmlWithMetadata(url);
  ctx.type = 'text/html';
});

router.get('/:id', async (ctx, next) => {
  const url = `https://maps.app.goo.gl/${ctx.params.id}?_imcp=1`;
  ctx.body = await generateHtmlWithMetadata(url);
  ctx.type = 'text/html';
});

app
  .use(router.routes())
  .use(router.allowedMethods());

app.listen(3000, () => {
  console.log('Server running on port 3000');
});