Feat/add current supply pactv2

packages/api/.env.development.template

@@ -39,6 +39,7 @@ MASTER_KEY=
 MINIMAL_MOBILE_APP_VERSION=
 NODE_ENV=
 PACT_CONTRACT_ADDRESS=
+PACTV2_CONTRACT_ADDRESS=
 PORT=5002
 POSITION_STACK_API_BASE_URL=
 POSITION_STACK_API_KEY=

packages/api/src/controllers/v2/circulatingSupply.ts

@@ -0,0 +1,35 @@
+import { BigNumber } from 'bignumber.js';
+import { Contract } from '@ethersproject/contracts';
+import { JsonRpcProvider } from '@ethersproject/providers';
+import { Request, Response } from 'express';
+import { config, contracts } from '@impactmarket/core';
+
+// this is required for external services to access the circulating supply
+export const circulatingSupply = async (_req: Request, res: Response) => {
+    const decimals = new BigNumber(10).pow(18);
+    const pact = new Contract(
+        config.contractAddresses.pact,
+        contracts.ERC20ABI,
+        new JsonRpcProvider(config.jsonRpcUrl)
+    );
+    const topHolders = [
+        '0xBD11CaeA0a854ba328e202ceD2F0269fD8027c6e',
+        '0x59aAc0b8bd03b7Ba9D391Eb989c3Ea8CdE638144',
+        '0x73cD8626b3cD47B009E68380720CFE6679A3Ec3D',
+        '0x3844cb665cf676B1Eb7C896E04D3E9eC3BAB5a75',
+        '0x213962Ba8e4cef1D618c88d62D2FFA39eC5Eb22D',
+        '0x1854c78e5401A501A8F32f3a9DFae3d356Fb9A9E'
+    ];
+    const topHoldersBalances = await Promise.all(topHolders.map(holder => pact.balanceOf(holder)));
+
+    const totalSupply = new BigNumber(100_000_000_000).multipliedBy(decimals);
+    let circulatingSupply = new BigNumber(totalSupply);
+    topHoldersBalances.forEach(balance => {
+        circulatingSupply = circulatingSupply.minus(balance.toString());
+    });
+
+    const response = circulatingSupply.dividedBy(decimals).toNumber();
+
+    // answer
+    res.send(response.toString());
+};

packages/api/src/routes/v2/protocol/circulatingSupply.ts

@@ -0,0 +1,44 @@
+import { Request, Response, Router } from 'express';
+
+import { cache } from '../../../middlewares/cache-redis';
+import { cacheIntervals } from '../../../utils/api';
+import { circulatingSupply } from '~controllers/v2/circulatingSupply';
+
+export default (route: Router): void => {
+    /**
+     * @swagger
+     *
+     * /protocol/circulating-supply:
+     *   get:
+     *     tags:
+     *       - "generic"
+     *     summary: Gets PACT circulating supply.
+     *     responses:
+     *       "200":
+     *         description: OK
+     */
+    route.get('/circulating-supply', cache(cacheIntervals.oneDay), circulatingSupply);
+
+    /**
+     * @swagger
+     *
+     * /protocol/total-supply:
+     *   get:
+     *     tags:
+     *       - "generic"
+     *     summary: Gets total PACT supply.
+     *     responses:
+     *       "200":
+     *         description: OK
+     *         content:
+     *           application/json:
+     *             schema:
+     *               type: object
+     *               properties:
+     *                 success:
+     *                   type: boolean
+     *                 data:
+     *                   type: number
+     */
+    route.get('/total-supply', (_req: Request, res: Response) => res.send(100_000_000_000));
+};

packages/api/src/routes/v2/protocol/index.ts

@@ -1,10 +1,13 @@
 import { Router } from 'express';
 
 import microcredit from './microcredit';
+import circulatingSupply from './circulatingSupply';
 
 export default (app: Router): void => {
     const route = Router();
     app.use('/protocol', route);
 
     microcredit(route);
+    circulatingSupply(route);
+
 };

packages/core/src/config/index.ts

@@ -80,6 +80,7 @@ export default {
     /** contract addresses */
     contractAddresses: {
         pact: validatedEnv.PACT_CONTRACT_ADDRESS,
+        pactV2: validatedEnv.PACTV2_CONTRACT_ADDRESS,
         airgrab: validatedEnv.AIRGRAB_CONTRACT_ADDRESS,
         donationMiner: validatedEnv.DONATION_MINER_CONTRACT_ADDRESS,
         impactLabs: validatedEnv.IMPACTLABS_CONTRACT_ADDRESS,

packages/core/src/config/validatenv.ts

@@ -90,6 +90,7 @@ function validateEnv() {
         DEFAULT_LIMIT: num({ default: 10 }),
         DEFAULT_OFFSET: num({ default: 0 }),
         PACT_CONTRACT_ADDRESS: str({ devDefault: onlyOnTestEnv('xyz') }),
+        PACTV2_CONTRACT_ADDRESS: str({ devDefault: onlyOnTestEnv('xyz') }),
         AIRGRAB_CONTRACT_ADDRESS: str({ devDefault: onlyOnTestEnv('xyz') }),
         DONATION_MINER_CONTRACT_ADDRESS: str({
             devDefault: onlyOnTestEnv('xyz')