From 7c84bccbb90911083750164f96877a61343b4795 Mon Sep 17 00:00:00 2001
From: Jaco <jacogr@gmail.com>
Date: Tue, 29 Jun 2021 17:23:00 +0300
Subject: [PATCH] Adjust Ledger lookups via hash/apps only (#5618)

* Adjust Ledger lookups via hash/apps only

* Lookup on all genesis hashes

* Lookup against all hashes

* Adjust ledger lookups
---
 packages/react-hooks/src/useLedger.ts | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/packages/react-hooks/src/useLedger.ts b/packages/react-hooks/src/useLedger.ts
index 999dad80a5..e6ef4cf8c5 100644
--- a/packages/react-hooks/src/useLedger.ts
+++ b/packages/react-hooks/src/useLedger.ts
@@ -7,7 +7,7 @@ import type { LedgerTypes } from '@polkadot/hw-ledger/types';
 import { useCallback, useMemo } from 'react';
 
 import { Ledger } from '@polkadot/hw-ledger';
-import networks from '@polkadot/networks';
+import { knownGenesis, knownLedger } from '@polkadot/networks/defaults';
 import uiSettings from '@polkadot/ui-settings';
 import { assert } from '@polkadot/util';
 
@@ -28,7 +28,10 @@ const EMPTY_STATE: StateBase = {
 };
 
 const hasWebUsb = !!(window as unknown as { USB?: unknown }).USB;
-const ledgerChains = networks.filter((n) => !!n.hasLedgerSupport);
+const ledgerChains = Object
+  .keys(knownGenesis)
+  .filter((n) => knownLedger[n]);
+const ledgerHashes = ledgerChains.reduce<string[]>((all, n) => [...all, ...knownGenesis[n]], []);
 let ledger: Ledger | null = null;
 let ledgerType: LedgerTypes | null = null;
 
@@ -37,11 +40,11 @@ function retrieveLedger (api: ApiPromise): Ledger {
 
   if (!ledger || ledgerType !== currType) {
     const genesisHex = api.genesisHash.toHex();
-    const def = ledgerChains.find(({ genesisHash }) => genesisHash[0] === genesisHex);
+    const network = ledgerChains.find((network) => knownGenesis[network].includes(genesisHex));
 
-    assert(def, `Unable to find supported chain for ${genesisHex}`);
+    assert(network, `Unable to find a known Ledger config for genesisHash ${genesisHex}`);
 
-    ledger = new Ledger(currType, def.network);
+    ledger = new Ledger(currType, network);
     ledgerType = currType;
   }
 
@@ -49,7 +52,7 @@ function retrieveLedger (api: ApiPromise): Ledger {
 }
 
 function getState (api: ApiPromise): StateBase {
-  const isLedgerCapable = hasWebUsb && ledgerChains.map(({ genesisHash }) => genesisHash[0]).includes(api.genesisHash.toHex());
+  const isLedgerCapable = hasWebUsb && ledgerHashes.includes(api.genesisHash.toHex());
 
   return {
     isLedgerCapable,