feat: add /block/:hash/raw api route

backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts

@@ -9,6 +9,7 @@ export interface AbstractBitcoinApi {
   $getBlockHash(height: number): Promise<string>;
   $getBlockHeader(hash: string): Promise<string>;
   $getBlock(hash: string): Promise<IEsploraApi.Block>;
+  $getRawBlock(hash: string): Promise<string>;
   $getAddress(address: string): Promise<IEsploraApi.Address>;
   $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
   $getAddressPrefix(prefix: string): string[];

backend/src/api/bitcoin/bitcoin.routes.ts

@@ -103,9 +103,10 @@ class BitcoinRoutes {
           .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/header', this.getBlockHeader)
           .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/height', this.getBlockTipHeight)
           .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/hash', this.getBlockTipHash)
+          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/raw', this.getRawBlock)
+          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txids', this.getTxIdsForBlock)
           .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs', this.getBlockTransactions)
           .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs/:index', this.getBlockTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txids', this.getTxIdsForBlock)
           .get(config.MEMPOOL.API_URL_PREFIX + 'block-height/:height', this.getBlockHeight)
           .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address', this.getAddress)
           .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs', this.getAddressTransactions)
@@ -470,6 +471,16 @@ class BitcoinRoutes {
     }
   }
 
+  private async getRawBlock(req: Request, res: Response) {
+    try {
+      const result = await bitcoinApi.$getRawBlock(req.params.hash);
+      res.setHeader('content-type', 'text/plain');
+      res.send(result);
+    } catch (e) {
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+
   private async getTxIdsForBlock(req: Request, res: Response) {
     try {
       const result = await bitcoinApi.$getTxIdsForBlock(req.params.hash);

backend/src/api/bitcoin/esplora-api.ts

@@ -50,6 +50,11 @@ class ElectrsApi implements AbstractBitcoinApi {
       .then((response) => response.data);
   }
 
+  $getRawBlock(hash: string): Promise<string> {
+    return axios.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + "/raw", this.axiosConfig)
+      .then((response) => response.data);
+  }
+
   $getAddress(address: string): Promise<IEsploraApi.Address> {
     throw new Error('Method getAddress not implemented.');
   }

frontend/src/app/docs/api-docs/api-docs-data.ts

@@ -2070,7 +2070,7 @@ export const restApiDocsData = [
     fragment: "get-block-raw",
     title: "GET Block Raw",
     description: {
-      default: "Returns the raw block representation in binary."
+      default: "Returns the raw block representation in binary for Esplora backend, or hex for Bitcoin Core RPC backend."
     },
     urlString: "/block/:hash/raw",
     showConditions: bitcoinNetworks.concat(liquidNetworks),