explorer logo api

src/api/routes.ts

@@ -140,6 +140,6 @@ export function registerRoutes(server: FastifyInstance) {
     addRedirect(server, '/v2/history', '/v2/docs/index.html#/history');
     addRedirect(server, '/v2/state', '/v2/docs/index.html#/state');
     addRedirect(server, '/v1/chain', '/v2/docs/index.html#/chain');
-    addRedirect(server, '/explorer', '/v2/explore');
-    addRedirect(server, '/explore', '/v2/explore');
+    // addRedirect(server, '/explorer', '/v2/explore');
+    // addRedirect(server, '/explore', '/v2/explore');
 }

src/api/routes/v2/explorer_logo/explorer_logo.ts

@@ -0,0 +1,27 @@
+import {FastifyInstance, FastifyReply, FastifyRequest} from "fastify";
+import {request as undiciRequest} from 'undici';
+
+let logo: Buffer | null = null;
+let contentType: string | null = null;
+
+export function explorerLogoHandler(fastify: FastifyInstance, route: string) {
+    return async (_: FastifyRequest, reply: FastifyReply) => {
+        if (logo !== null && contentType !== null) {
+            reply.header('Content-Type', contentType);
+            reply.send(logo);
+        } else {
+            const {body, statusCode, headers} = await undiciRequest(fastify.manager.config.api.chain_logo_url);
+            if (statusCode !== 200) {
+                reply.code(statusCode).send({
+                    error: 'Not Found',
+                    message: 'The requested resource could not be found'
+                });
+            } else {
+                logo = Buffer.from(await body.arrayBuffer());
+                contentType = headers['content-type'] as string;
+                reply.header('Content-Type', contentType);
+                reply.send(logo);
+            }
+        }
+    }
+}

src/api/routes/v2/explorer_logo/index.ts

@@ -0,0 +1,15 @@
+import {FastifyInstance, FastifySchema} from "fastify";
+import {addApiRoute, getRouteName} from "../../../helpers/functions.js";
+import {explorerLogoHandler} from "./explorer_logo.js";
+
+export default function (fastify: FastifyInstance, opts: any, next: () => void) {
+    const schema: FastifySchema = {hide: true};
+    addApiRoute(
+        fastify,
+        'GET',
+        getRouteName(import.meta.filename),
+        explorerLogoHandler,
+        schema
+    );
+    next();
+}