src/server/utils/generate-manifest-json.ts

   1 import { readFile } from "fs/promises";
   2 import { GetSiteResponse } from "lemmy-js-client";
   3 import path from "path";
   4 import sharp from "sharp";
   5 import { fetchIconPng } from "./fetch-icon-png";
   6
   7 const iconSizes = [72, 96, 128, 144, 152, 192, 384, 512];
   8
   9 const defaultLogoPathDirectory = path.join(
  10   process.cwd(),
  11   "dist",
  12   "assets",
  13   "icons",
  14 );
  15
  16 export default async function ({
  17   my_user,
  18   site_view: {
  19     site,
  20     local_site: { community_creation_admin_only },
  21   },
  22 }: GetSiteResponse) {
  23   const icon = site.icon ? await fetchIconPng(site.icon) : null;
  24
  25   return {
  26     name: site.name,
  27     description: site.description ?? "A link aggregator for the fediverse",
  28     start_url: "/",
  29     scope: "/",
  30     display: "standalone",
  31     id: "/",
  32     background_color: "#222222",
  33     theme_color: "#222222",
  34     icons: await Promise.all(
  35       iconSizes.map(async size => {
  36         let src = await readFile(
  37           path.join(defaultLogoPathDirectory, `icon-${size}x${size}.png`),
  38         ).then(buf => buf.toString("base64"));
  39
  40         if (icon) {
  41           src = await sharp(icon)
  42             .resize(size, size)
  43             .png()
  44             .toBuffer()
  45             .then(buf => buf.toString("base64"));
  46         }
  47
  48         return {
  49           sizes: `${size}x${size}`,
  50           type: "image/png",
  51           src: `data:image/png;base64,${src}`,
  52           purpose: "any maskable",
  53         };
  54       }),
  55     ),
  56     shortcuts: [
  57       {
  58         name: "Search",
  59         short_name: "Search",
  60         description: "Perform a search.",
  61         url: "/search",
  62       },
  63       {
  64         name: "Communities",
  65         url: "/communities",
  66         short_name: "Communities",
  67         description: "Browse communities",
  68       },
  69       {
  70         name: "Create Post",
  71         url: "/create_post",
  72         short_name: "Create Post",
  73         description: "Create a post.",
  74       },
  75     ].concat(
  76       my_user?.local_user_view.person.admin || !community_creation_admin_only
  77         ? [
  78             {
  79               name: "Create Community",
  80               url: "/create_community",
  81               short_name: "Create Community",
  82               description: "Create a community",
  83             },
  84           ]
  85         : [],
  86     ),
  87     related_applications: [
  88       {
  89         platform: "f-droid",
  90         url: "https://f-droid.org/packages/com.jerboa/",
  91         id: "com.jerboa",
  92       },
  93     ],
  94   };
  95 }