chore: populate api path via env vars

Signed-off-by: Rafael Belchior <[email protected]>

.env.example

@@ -1,4 +1,5 @@
 BLOCKDAEMON_API_KEY=
+DEFI_API_BASE_PATH=https://svc.blockdaemon.com/defi
 MNEMONIC=
 LOG_LEVEL="DEBUG"
 SENDER_ADDRESS=

README.md

@@ -1,6 +1,6 @@
 # defi-api-examples
 
-This tool is a simple example app that leverages BD's DEFI API.
+This repository comprise a set of scripts that leverages BD's DEFI API. The script collection guides the creation of an application that leverages the DEFI API and has cross-chain token transfer capabilities.
 
 ### Requirements
 This is a Typescript project. Npm as package manager and node. Tested with npm v10.2.4, node 21.5.0. We recommend using [nvm](https://github.com/nvm-sh/nvm) for node version management.
@@ -28,4 +28,12 @@ This is a Typescript project. Npm as package manager and node. Tested with npm v
 * `get-routes` (gets a set of routes that satisfy a swap); 
 * `get-tokens-by-tag` (gets the list of supported tokens by specified tag)
 * `get-tokens` (gets the list of supported tokens)
-* `sign-and-broadcast-transaction` (signs and broadcasts a transaction to the blockchain)
+* `sign-and-broadcast-transaction` (signs and broadcasts a transaction to the blockchain).
+
+### Common issues and Troubleshooting
+For issues related to the code in this repository, please use the [issues tracker](https://github.com/Blockdaemon/defi-api-examples/issues). 
+
+### 👋 Need Further Help?
+
+Contact us through [email]([email protected]) or our [support page](https://www.blockdaemon.com/support) for any issues, bugs, or assistance you may need.
+

src/main/scripts/get-routes.ts

@@ -10,10 +10,10 @@ async function main() {
   const api = new ExchangeApi(apiConfig);
 
   const routeParameters: GetRoutesRequest = {
-    fromChain: "10", // Optimism
+    fromChain: "eip155:10", // Optimism
     fromToken: "0x7f5c764cbc14f9669b88837ca1490cca17c31607", // USDC.e
     fromAmount: "1000000",
-    toChain: "137", // Polygon
+    toChain: "eip:155137", // Polygon
     toToken: "0xc2132d05d31c914a87c6611c10748aeb04b58e8f", // USDT
     fromAddress: polygonWallet.address,
     toAddress: optimismWallet.address,

src/main/utils/common.ts

@@ -18,6 +18,9 @@ export const log: log4js.Log4js = log4js.configure({
   },
 });
 
+const DEFI_API_BASE_PATH =
+  process.env.DEFI_API_BASE_PATH || "https://svc.blockdaemon.com/defi";
+
 export const API_KEY: string =
   process.env.BLOCKDAEMON_API_KEY ||
   (() => {
@@ -58,7 +61,7 @@ export const polygonWallet = Wallet.fromPhrase(mnemonic, polygonProvider);
 export const optimismWallet = Wallet.fromPhrase(mnemonic, optimismProvider);
 
 export const apiConfig = new Configuration({
-  basePath: "https://svc.blockdaemon.com/defi",
+  basePath: DEFI_API_BASE_PATH,
   headers: {
     authorization: `Bearer ${process.env.BLOCKDAEMON_API_KEY}`,
   },