feat: add total rewards (#419)

Author: x-wagmi

packages/page-staking/src/Overview/MainnetRewards.tsx

@@ -2,68 +2,95 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /* eslint-disable */
-import { ActiveEraInfo } from '@polkadot/types/interfaces';
+import {ActiveEraInfo} from '@polkadot/types/interfaces';
 
-import React from 'react';
+import React, {useEffect, useState} from 'react';
 
 import { useApi, useCall } from '@polkadot/react-hooks';
 import { FormatBalance } from '@polkadot/react-query';
 import BN from 'bn.js';
-import { Icon, Tooltip } from '@polkadot/react-components';
+import {Icon, Spinner, Tooltip} from '@polkadot/react-components';
 import { useTranslation } from '@polkadot/apps/translate';
 import { formatBalance } from '@polkadot/util';
+import {ApiPromise} from "@polkadot/api/promise";
 
 interface Props {
   children?: React.ReactNode;
   className?: string;
   label?: React.ReactNode;
 }
 
-const UNIT = new BN(1_000_000_000_000)
+async function getStakingRewards(api: ApiPromise , idx: number): Promise<BN> {
+  const erasp = await api.query.staking.erasStakingPayout(idx);
+  const erasStakingPayout = JSON.parse(JSON.stringify(erasp));
+  const keys = await api.query.staking.erasAuthoringPayout.keys(idx);
+
+  let totalValue = new BN(0);
+  for (const key of keys) {
+    const [_, accountId] = key.args;
+    const value = await api.query.staking.erasAuthoringPayout(idx, accountId);
+    totalValue = totalValue.add(new BN(value.toString()));
+  }
+
+  return totalValue.add(new BN(erasStakingPayout as string));
+}
 
 function MainnetReward ({ children, className = '', label }: Props): React.ReactElement<Props> {
   const { api } = useApi();
   const { t } = useTranslation();
+  const [loading, setLoading] = useState(true)
+  const [stakingRewards, setStakingRewards] = useState<BN>(new BN(0))
   const activeEraInfo = useCall<ActiveEraInfo>(api.query.staking.activeEra);
 
   const activeEra = activeEraInfo && (JSON.parse(JSON.stringify(activeEraInfo)).index);
   const marketPayout = useCall<any>(api.query.staking.erasMarketPayout, [activeEra]);
-  const stakingRewards = new BN(3011.635871031734).mul(UNIT)
+  // const stakingRewards = new BN(3011.635871031734).mul(UNIT)
   const total = marketPayout && stakingRewards.add(new BN(Number(marketPayout).toString()))
 
+  useEffect(() => {
+    if (!activeEra) return
+    getStakingRewards(api, activeEra as number - 1).then((res: BN) => {
+      setLoading(false)
+      setStakingRewards(res);
+    })
+  }, [activeEra]);
+
   return (
     <div className={className}>
       {label || ''}
-      <FormatBalance
-        value={total}
-        withSi
-        label={
-          <Icon
-            icon='info-circle'
-            tooltip={`mainnet-reward-trigger`}
-          />
-        }
-      >
-        <Tooltip
-          text={
-            <>
-              <div>
-                <div className='faded'>{t('staking payout: {{stakingRewards}}', {
-                  replace: {
-                    stakingRewards: formatBalance(stakingRewards)
-                  }
-                })}</div>
-                <div className='faded'>{t('market payout: {{marketPayout}}', {
-                  replace: {
-                    marketPayout: marketPayout && formatBalance(new BN(Number(marketPayout).toString()))
-                  }
-                })}</div>
-              </div>
-            </>
+      {loading && <Spinner noLabel />}
+      {!loading &&
+        <FormatBalance
+          value={total}
+          withSi
+          label={
+            <Icon
+              icon='info-circle'
+              tooltip={`mainnet-reward-trigger`}
+            />
           }
-          trigger={`mainnet-reward-trigger`}
-        />
-      </FormatBalance>
+        >
+          <Tooltip
+            text={
+              <>
+                <div>
+                  <div className='faded'>{t('staking payout: {{stakingRewards}}', {
+                    replace: {
+                      stakingRewards: formatBalance(stakingRewards)
+                    }
+                  })}</div>
+                  <div className='faded'>{t('market payout: {{marketPayout}}', {
+                    replace: {
+                      marketPayout: marketPayout && formatBalance(new BN(Number(marketPayout).toString()))
+                    }
+                  })}</div>
+                </div>
+              </>
+            }
+            trigger={`mainnet-reward-trigger`}
+          />
+        </FormatBalance>
+      }
       {children}
     </div>
   );