1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82

#!/usr/bin/env node
import imageminZopfli from 'imagemin-zopfli';
import {optimize} from 'svgo';
import {fabric} from 'fabric';
import {readFile, writeFile} from 'node:fs/promises';

function exit(err) {
  if (err) console.error(err);
  process.exit(err ? 1 : 0);
}

function loadSvg(svg) {
  return new Promise((resolve) => {
    fabric.loadSVGFromString(svg, (objects, options) => {
      resolve({objects, options});
    });
  });
}

async function generate(svg, path, {size, bg}) {
  const outputFile = new URL(path, import.meta.url);

  if (String(outputFile).endsWith('.svg')) {
    const {data} = optimize(svg, {
      plugins: [
        'preset-default',
        'removeDimensions',
        {
          name: 'addAttributesToSVGElement',
          params: {attributes: [{width: size}, {height: size}]}
        },
      ],
    });
    await writeFile(outputFile, data);
    return;
  }

  const {objects, options} = await loadSvg(svg);
  const canvas = new fabric.Canvas();
  canvas.setDimensions({width: size, height: size});
  const ctx = canvas.getContext('2d');
  ctx.scale(options.width ? (size / options.width) : 1, options.height ? (size / options.height) : 1);

  if (bg) {
    canvas.add(new fabric.Rect({
      left: 0,
      top: 0,
      height: size * (1 / (size / options.height)),
      width: size * (1 / (size / options.width)),
      fill: 'white',
    }));
  }

  canvas.add(fabric.util.groupSVGElements(objects, options));
  canvas.renderAll();

  let png = Buffer.from([]);
  for await (const chunk of canvas.createPNGStream()) {
    png = Buffer.concat([png, chunk]);
  }

  png = await imageminZopfli({more: true})(png);
  await writeFile(outputFile, png);
}

async function main() {
  const gitea = process.argv.slice(2).includes('gitea');
  const logoSvg = await readFile(new URL('../assets/logo.svg', import.meta.url), 'utf8');
  const faviconSvg = await readFile(new URL('../assets/favicon.svg', import.meta.url), 'utf8');

  await Promise.all([
    generate(logoSvg, '../public/img/logo.svg', {size: 32}),
    generate(logoSvg, '../public/img/logo.png', {size: 512}),
    generate(faviconSvg, '../public/img/favicon.svg', {size: 32}),
    generate(faviconSvg, '../public/img/favicon.png', {size: 180}),
    generate(logoSvg, '../public/img/avatar_default.png', {size: 200}),
    generate(logoSvg, '../public/img/apple-touch-icon.png', {size: 180, bg: true}),
    gitea && generate(logoSvg, '../public/img/gitea.svg', {size: 32}),
  ]);
}

main().then(exit).catch(exit);