handle missing env vars

Author: dsm-ll

Diff for: .env.example

@@ -1,8 +1,8 @@
-ACCT_PUBLIC_KEY=
-ACCT_PRIVATE_KEY=
+ACCT_PUBLIC_KEY=0x0000000000000000000000000000000000000000
+ACCT_PRIVATE_KEY=0000000000000000000000000000000000000000000000000000000000000000
 REACT_APP_DATAFEED_FLEX_SUBGRAPH_BASEURL=http://localhost:8000/subgraphs/name/fetch-oracle/fetchflex
 REACT_APP_DATAFEED_AUTOPAY_SUBGRAPH_BASEURL=http://localhost:8000/subgraphs/name/fetch-oracle/autopay-pulse
-AUTOPAY_ADDRESS=
+AUTOPAY_ADDRESS=0x0000000000000000000000000000000000000000
 PULSE_NETWORK_URL=https://rpc.v4.testnet.pulsechain.com
 LISTENER_TIMEOUT_DURATION=120 # 120 seconds
 

Diff for: AutopayContract.js

@@ -15,10 +15,19 @@ class AutopayContract {
     const { bytecode, abi } = JSON.parse(readFileSync(abiJSONFile));
 
     const autopayAddress = process.env.AUTOPAY_ADDRESS;
+    if (!autopayAddress) {
+      console.log("AUTOPAY_ADDRESS env variable is not set");
+      process.exit(1);
+    }
 
-    const providerURL = process.env.PULSE_NETWORK_URL;
+    const providerURL = process.env.PULSE_NETWORK_URL || 'https://rpc.pulsechain.com';
 
     const privateKey = process.env.ACCT_PRIVATE_KEY;
+    if (!privateKey) {
+      console.log("ACCT_PRIVATE_KEY env variable is not set");
+      process.exit(1);
+    }
+    
     const provider = new ethers.JsonRpcProvider(providerURL);
     const wallet = new ethers.Wallet(privateKey, provider);
 

Diff for: README.md

@@ -10,6 +10,14 @@
 
 ## Claim one time tip
 
+To start using the application, please first configure the `.env` file:
+
+```sh
+cp .env.example .env
+```
+
+Please refer to `.env.example` to configure the `.env` file.
+
 Run `npm run start`, select "One Time Tip", then it will confirm the reporter public key address, and prompts the user to enter a query id and a initial timestamp to look for reports to claim tips.
 
 ```sh

Diff for: subgraphClients.js

@@ -1,7 +1,17 @@
 const { GraphQLClient } = require("graphql-request");
 
-const flexSubgraphUri = `${process.env.REACT_APP_DATAFEED_FLEX_SUBGRAPH_BASEURL}`;
-const autopaySubgraphUri = `${process.env.REACT_APP_DATAFEED_AUTOPAY_SUBGRAPH_BASEURL}`;
+const flexSubgraphUri = process.env.REACT_APP_DATAFEED_FLEX_SUBGRAPH_BASEURL;
+const autopaySubgraphUri = process.env.REACT_APP_DATAFEED_AUTOPAY_SUBGRAPH_BASEURL;
+
+if (!flexSubgraphUri) {
+  console.log("REACT_APP_DATAFEED_FLEX_SUBGRAPH_BASEURL env variable is not set");
+  process.exit(1);
+}
+
+if (!autopaySubgraphUri) {
+  console.log("REACT_APP_DATAFEED_AUTOPAY_SUBGRAPH_BASEURL env variable is not set");
+  process.exit(1);
+}
 
 const flexClient = new GraphQLClient(flexSubgraphUri);
 const autopayClient = new GraphQLClient(autopaySubgraphUri);