Allow users to force-update their linked ETH address

Removed sc_identity_id from Player table because it enforces ETH addresses to be used as the single source of truth for users and prevents conflicts when users update their ETH address in the ledger. sc_identity_id is not needing anywhere in our backend / data model.

packages/utils/package.json

@@ -17,6 +17,7 @@
     "bignumber.js": "9.0.1",
     "ethers": "5.3.0",
     "js-base64": "3.6.1",
-    "uuid": "8.3.2"
+    "uuid": "8.3.2",
+    "sourcecred": "0.9.0"
   }
 }

packages/utils/src/index.ts

@@ -5,3 +5,4 @@ export * as DiscordUtil from './discordHelpers';
 export * as numbers from './numbers';
 export * from './promiseHelpers';
 export * from './rankHelpers';
+export * from './sourceCredHelpers';

packages/utils/src/sourceCredHelpers.ts

@@ -0,0 +1,15 @@
+import { ethers } from 'ethers';
+import { SCIdentity, sourcecred as sc } from 'sourcecred';
+
+export const getLatestEthAddress = (identity: SCIdentity): string | null => {
+  const ethAddress = identity.aliases.find((alias) => {
+    const parts = sc.core.graph.NodeAddress.toParts(alias.address);
+    return parts.indexOf('ethereum') > 0;
+  })?.description;
+
+  if (ethAddress && ethers.utils.isAddress(ethAddress)) {
+    return ethAddress.toLowerCase();
+  }
+
+  return null;
+};