refactor: make RSK log scan endpoint optional

.env.sample

@@ -0,0 +1,6 @@
+# RSK RPC URL for logs scanning which is not supported by the public RPCs
+VITE_RSK_LOG_SCAN_ENDPOINT=
+
+# Token for the Chatwoot website inbox
+# The chat widget will not be loaded if not set
+VITE_CHATWOOT_TOKEN=

build.py

@@ -5,7 +5,6 @@
 
 def handle_coop_disabled():
     print("Cooperative signatures are disabled in config")
-    sys.exit(1)
 
 with open("./src/config.ts", "r") as f:
     for line in f:
@@ -28,14 +27,15 @@ def handle_coop_disabled():
 
 # .env file is not required on regtest
 if network != "regtest":
-    with open(".env", "r") as f:
-        data = f.read()
-
-        for var in ["VITE_RSK_LOG_SCAN_ENDPOINT"]:
-            if var not in data:
-                print(f"{var} not in .env file")
-                sys.exit(1)
-
-        for var in ["VITE_CHATWOOT_TOKEN"]:
-            if var not in data:
-                print(f"WARN: {var} not in .env file")
+    try:
+        with open(".env", "r") as f:
+            data = f.read()
+
+            for var in [
+                "VITE_RSK_LOG_SCAN_ENDPOINT",
+                "VITE_CHATWOOT_TOKEN"
+            ]:
+                if var not in data:
+                    print(f"WARN: {var} not in .env file")
+    except Exception as e:
+        print("WARN: could not open .env file:", e)

src/pages/Refund.tsx

@@ -231,6 +231,8 @@ const Refund = () => {
                     />
                     <Show
                         when={
+                            import.meta.env.VITE_RSK_LOG_SCAN_ENDPOINT !==
+                                undefined &&
                             Object.keys(providers()).length > 0 &&
                             (refundJson() === null ||
                                 refundJson().assetSend === RBTC)

src/utils/contractLogs.ts

@@ -66,6 +66,11 @@ async function* scanLogsForPossibleRefunds(
     );
 
     const scanProviderUrl = import.meta.env.VITE_RSK_LOG_SCAN_ENDPOINT;
+    if (scanProviderUrl === undefined) {
+        return;
+    }
+
+    console.log(scanProviderUrl);
     const etherSwapScan =
         scanProviderUrl !== undefined
             ? (new Contract(