extract manifest out of build script and have both (non)-maskable icons

also make PWA standalone instead of fullscreen as that doesn't seem
to play well with the onscreen keyboard on mobile

assets/icon.svg

@@ -0,0 +1,4 @@
+<svg width="384" height="384" viewBox="0 0 384 384" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M64.1212 192C64.1212 121.375 121.375 64.1212 192 64.1212C219.695 64.1212 245.333 72.9249 266.269 87.8864C264.331 92.1063 263.25 96.8018 263.25 101.75C263.25 120.113 278.136 135 296.5 135C299.74 135 302.871 134.536 305.832 133.672C314.811 151.161 319.879 170.989 319.879 192C319.879 262.626 262.626 319.879 192 319.879C121.375 319.879 64.1212 262.626 64.1212 192ZM320.589 124.669C331.148 144.792 337.121 167.698 337.121 192C337.121 272.148 272.148 337.121 192 337.121C111.852 337.121 46.8792 272.148 46.8792 192C46.8792 111.852 111.852 46.8792 192 46.8792C223.884 46.8792 253.367 57.1615 277.313 74.5912C282.733 70.7544 289.353 68.4998 296.5 68.4998C314.863 68.4998 329.75 83.3863 329.75 101.75C329.75 110.634 326.266 118.704 320.589 124.669Z" fill="#0DBD8B"/>
+<circle cx="192" cy="192" r="85.5" fill="#0DBD8B"/>
+</svg>

assets/manifest.json

@@ -0,0 +1,12 @@
+{
+    "name": "Hydrogen",
+    "short_name": "Hydrogen",
+    "display": "standalone",
+    "description": "Lightweight matrix client with legacy and mobile browser support",
+    "start_url": "index.html",
+    "icons": [
+        {"src": "assets/icon.png", "sizes": "384x384", "type": "image/png"},
+        {"src": "assets/icon-maskable.png", "sizes": "384x384", "type": "image/png", "purpose": "maskable"}
+    ],
+    "theme_color": "#0DBD8B"
+}

scripts/build.mjs

@@ -93,16 +93,9 @@ async function build() {
     const cssBundlePaths = await buildCssBundles(legacy ? buildCssLegacy : buildCss, themes, themeAssets);
 
     let manifestPath;
-    // copy icons
-    let iconPng = await fs.readFile(path.join(projectDir, "icon.png"));
-    let iconPngPath = resource("icon.png", iconPng);
-    await fs.writeFile(iconPngPath, iconPng);
-    let iconSvg = await fs.readFile(path.join(projectDir, "icon.svg"));
-    let iconSvgPath = resource("icon.svg", iconSvg);
-    await fs.writeFile(iconSvgPath, iconSvg);
 
     const assetPaths = createAssetPaths(jsBundlePath, jsLegacyBundlePath, jsWorkerPath,
-        iconPngPath, iconSvgPath, cssBundlePaths, themeAssets);
+        cssBundlePaths, themeAssets);
 
     if (offline) {
         manifestPath = await buildOffline(version, assetPaths);
@@ -112,13 +105,14 @@ async function build() {
     console.log(`built ${PROJECT_ID} ${version} successfully`);
 }
 
-function createAssetPaths(jsBundlePath, jsLegacyBundlePath, jsWorkerPath, iconPngPath, iconSvgPath, cssBundlePaths, themeAssets) {
-    function trim(path) {
+function trim(path) {
     if (!path.startsWith(targetDir)) {
         throw new Error("invalid target path: " + targetDir);
     }
     return path.substr(targetDir.length);
-    }
+}
+
+function createAssetPaths(jsBundlePath, jsLegacyBundlePath, jsWorkerPath, cssBundlePaths, themeAssets) {
     return {
         jsBundle: () => trim(jsBundlePath),
         jsLegacyBundle: () => trim(jsLegacyBundlePath),
@@ -127,8 +121,6 @@ function createAssetPaths(jsBundlePath, jsLegacyBundlePath, jsWorkerPath, iconPn
         cssThemeBundle: themeName => trim(cssBundlePaths.themes[themeName]),
         cssThemeBundles: () => Object.values(cssBundlePaths.themes).map(a => trim(a)),
         otherAssets: () => Object.values(themeAssets).map(a => trim(a)),
-        iconSvgPath: () => trim(iconSvgPath),
-        iconPngPath: () => trim(iconPngPath),
     };
 }
 
@@ -263,13 +255,20 @@ function buildWorkerJsLegacy(inputFile, outputName) {
 }
 
 async function buildOffline(version, assetPaths) {
+    // write web manifest
+    const webManifest = JSON.parse(await fs.readFile(path.join(projectDir, "assets/manifest.json"), "utf8"));
+    for (const icon of webManifest.icons) {
+        let iconData = await fs.readFile(path.join(projectDir, icon.src));
+        let iconPath = resource(path.basename(icon.src), iconData);
+        await fs.writeFile(iconPath, iconData);
+        icon.src = trim(iconPath);
+    }
     // write offline availability
     const offlineFiles = [
         assetPaths.cssMainBundle(),
         "index.html",
-        assetPaths.iconPngPath(),
-        assetPaths.iconSvgPath(),
-    ].concat(assetPaths.cssThemeBundles());
+    ].concat(assetPaths.cssThemeBundles())
+    .concat(webManifest.icons.map(i => i.src));
 
     // write appcache manifest
     const appCacheLines = [
@@ -289,18 +288,6 @@ async function buildOffline(version, assetPaths) {
     swSource = swSource.replace(`"%%OFFLINE_FILES%%"`, JSON.stringify(swOfflineFiles));
     swSource = swSource.replace(`"%%CACHE_FILES%%"`, JSON.stringify(assetPaths.otherAssets()));
     await fs.writeFile(path.join(targetDir, "sw.js"), swSource, "utf8");
-    // write web manifest
-    const webManifest = {
-        name:PROJECT_NAME,
-        short_name: PROJECT_SHORT_NAME,
-        display: "fullscreen",
-        start_url: "index.html",
-        icons: [
-            {"src": assetPaths.iconPngPath(), "sizes": "384x384", "type": "image/png"},
-            {"src": assetPaths.iconSvgPath(), "type": "image/svg+xml"},
-        ],
-        theme_color: "#0DBD8B"
-    };
     const manifestJson = JSON.stringify(webManifest);
     const manifestPath = resource("manifest.json", manifestJson);
     await fs.writeFile(manifestPath, manifestJson, "utf8");