build(electron): flatpak support for linux (#8439)

some issues
- app icon not showing correctly
- missing wayland support
- runtime is outdated

related to
- https://github.com/toeverything/AFFiNE/issues/3272
- https://github.com/toeverything/AFFiNE/issues/5985
- https://github.com/toeverything/AFFiNE/issues/6642

packages/frontend/apps/electron/forge.config.mjs

@@ -10,6 +10,7 @@ import {
   arch,
   buildType,
   icnsPath,
+  iconPngPath,
   iconUrl,
   iconX64PngPath,
   icoPath,
@@ -19,6 +20,8 @@ import {
 
 const fromBuildIdentifier = utils.fromBuildIdentifier;
 
+const linuxMimeTypes = [`x-scheme-handler/${productName.toLowerCase()}`];
+
 const __dirname = fileURLToPath(new URL('.', import.meta.url));
 const makers = [
   !process.env.SKIP_BUNDLE &&
@@ -96,7 +99,39 @@ const makers = [
         name: productName,
         productName,
         icon: iconX64PngPath,
-        mimeType: ['x-scheme-handler/affine'],
+        mimeType: linuxMimeTypes,
+      },
+    },
+  },
+  !process.env.SKIP_BUNDLE && {
+    name: '@electron-forge/maker-flatpak',
+    platforms: ['linux'],
+    /** @type {import('@electron-forge/maker-flatpak').MakerFlatpakConfig} */
+    config: {
+      options: {
+        mimeType: linuxMimeTypes,
+        productName,
+        bin: productName,
+        id: fromBuildIdentifier(appIdMap),
+        icon: iconPngPath, // not working yet
+        branch: buildType,
+        runtimeVersion: '20.08',
+        finishArgs: [
+          // Wayland/X11 Rendering
+          '--socket=wayland',
+          '--socket=x11',
+          '--share=ipc',
+          // Open GL
+          '--device=dri',
+          // Audio output
+          '--socket=pulseaudio',
+          // Read/write home directory access
+          '--filesystem=home',
+          // Allow communication with network
+          '--share=network',
+          // System notifications with libnotify
+          '--talk-name=org.freedesktop.Notifications',
+        ],
       },
     },
   },

packages/frontend/apps/electron/package.json

@@ -34,6 +34,7 @@
     "@electron-forge/core-utils": "^7.3.0",
     "@electron-forge/maker-deb": "^7.5.0",
     "@electron-forge/maker-dmg": "^7.3.0",
+    "@electron-forge/maker-flatpak": "^7.5.0",
     "@electron-forge/maker-squirrel": "^7.3.0",
     "@electron-forge/maker-zip": "^7.3.0",
     "@electron-forge/plugin-auto-unpack-natives": "^7.3.0",