filestack-js/examples/examples.js at master · filestack/filestack-js · 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
const express = require('express');
const util = require('util');
const fs = require('fs');
const path = require('path');
const app = express();
const yaml = require('js-yaml');
const readFile = util.promisify(fs.readFile);
const readDir = util.promisify(fs.readdir);

 // hardcoded names because of jsFiddle <== github integration
const files = {
  index: 'demo.html',
  script: 'demo.js',
  config: 'demo.details',
  css: 'demo.css',
};

const filesContent = {
  script: null,
  css: null,
  config: null
};

const template = `
<html>
    <title>{{title}}</title>
    <head>
        {{headScript}}
        <style>
          {{style}}
        </style>
    </head>
    <body>
        {{content}}
        <script src="http://localhost:4000/index.umd.js"></script>
        <script>
            {{script}}
        </script>
    </body>
</html>
`;

const listTemplate = `
<html>
    <body>
        <ul>{{list}}</ul>
    </body>
</html>
`;

let examples;
const getExamples = () => {
  examples = [];
  return readDir(__dirname).then((results) => {
    results.forEach((val) => {
      if (fs.statSync(path.join(__dirname, val)).isDirectory()
      && fs.existsSync(path.join(__dirname, val, files.config))) {
        examples.push(val);
      }
    });
  });
};

// render examples list
app.get('/', (req, res) => {
  getExamples().then(() => {
    const list = examples.map(val => `<li><a href="/${val}" alt="val">${val}</a></li>`);
    res.send(listTemplate.replace('{{list}}', list.join('\r\n')));
  });
});

// render example based on jsFiddle github integration
app.get('/*', (req, res) => {
  const requestedPath = req.path;
  const promises = [];
  if (req.path === '/index.umd.js') {
    return readFile(path.join(__dirname, '../build/browser/index.umd.js'))
      .then((file) => res.send(file.toString()));
  }

  const stripped = req.path.substring(1);
  if (examples.indexOf(stripped) === -1) {
    res.status(404);
    res.end();
    return;
  }

  Object.keys(files).forEach((key) => {
    const promiseFn = readFile(path.join(__dirname, requestedPath, files[key]));
    promiseFn.then((res) => {
      filesContent[key] = res.toString();
    });

    promises.push(promiseFn);
  });

  Promise.all(promises).then(() => {
    if (!filesContent.config) {
      res.status(404);
      res.end();
      return;
    }

    const config = yaml.load(filesContent.config);
    let tpl = template + '';
    tpl = tpl.replace('{{title}}', config.name || '')
      .replace('{{content}}', filesContent.index)
      .replace('{{script}}', filesContent.script)
      .replace('{{style}}', filesContent.css || '');

    if (config.resources) {
      let resources = [];

      config.resources.forEach((val) => {
        resources.push(`<script src="${val}"></script>`)
      });

      tpl = tpl.replace('{{headScript}}', resources.join('\r\n'))
    } else {
      tpl = tpl.replace('{{headScript}}', '')
    }

    res.send(tpl);
  }).catch((err) => {
    console.log(err);
    res.status(404);
    res.end();
  });
});

getExamples().then(() => {
  app.listen(4000, () => console.log('Filestack Examples server is listening on http://localhost:4000'))
});