Use symlink to avoid duplicate fallback images

unfurler/src/index.ts

@@ -251,7 +251,7 @@ class Server {
 
       if (!img) {
         // send local fallback image file
-        res.sendFile(nodejsPath.join(__dirname, matchedRoute.fallbackFile));
+        res.sendFile(nodejsPath.join(__dirname, matchedRoute.fallbackImg));
       } else {
         res.contentType('image/png');
         res.send(img);

unfurler/src/resources

@@ -0,0 +1 @@
+../../frontend/src/resources

unfurler/src/routes.ts

@@ -2,7 +2,6 @@ interface Match {
   render: boolean;
   title: string;
   fallbackImg: string;
-  fallbackFile: string;
   staticImg?: string;
   networkMode: string;
 }
@@ -32,7 +31,6 @@ const routes = {
   lightning: {
     title: "Lightning",
     fallbackImg: '/resources/previews/lightning.png',
-    fallbackFile: '/resources/img/lightning.png',
     routes: {
       node: {
         render: true,
@@ -71,7 +69,6 @@ const routes = {
   mining: {
     title: "Mining",
     fallbackImg: '/resources/previews/mining.png',
-    fallbackFile: '/resources/img/mining.png',
     routes: {
       pool: {
         render: true,
@@ -87,14 +84,12 @@ const routes = {
 const networks = {
   bitcoin: {
     fallbackImg: '/resources/previews/dashboard.png',
-    fallbackFile: '/resources/img/dashboard.png',
     routes: {
       ...routes // all routes supported
     }
   },
   liquid: {
     fallbackImg: '/resources/liquid/liquid-network-preview.png',
-    fallbackFile: '/resources/img/liquid',
     routes: { // only block, address & tx routes supported
       block: routes.block,
       address: routes.address,
@@ -103,7 +98,6 @@ const networks = {
   },
   bisq: {
     fallbackImg: '/resources/bisq/bisq-markets-preview.png',
-    fallbackFile: '/resources/img/bisq.png',
     routes: {} // no routes supported
   }
 };
@@ -113,7 +107,6 @@ export function matchRoute(network: string, path: string): Match {
     render: false,
     title: '',
     fallbackImg: '',
-    fallbackFile: '',
     networkMode: 'mainnet'
   }
 
@@ -128,7 +121,6 @@ export function matchRoute(network: string, path: string): Match {
 
   let route = networks[network] || networks.bitcoin;
   match.fallbackImg = route.fallbackImg;
-  match.fallbackFile = route.fallbackFile;
 
   // traverse the route tree until we run out of route or tree, or hit a renderable match
   while (!route.render && route.routes && parts.length && route.routes[parts[0]]) {
@@ -136,7 +128,6 @@ export function matchRoute(network: string, path: string): Match {
     parts.shift();
     if (route.fallbackImg) {
       match.fallbackImg = route.fallbackImg;
-      match.fallbackFile = route.fallbackFile;
     }
   }