add cfg token functions

functions/.env.example

@@ -1 +1,2 @@
 CENTRIFUGE_SUBGRAPH_URL=
+SUBSCAN_API_KEY=

functions/src/getCirculatingSupply.ts

@@ -0,0 +1,14 @@
+import axios from 'axios'
+
+export default async function getCirculatingSupply(req, res) {
+  const { data } = await axios.get('https://centrifuge.api.subscan.io/api/scan/token', {
+    headers: {
+      'X-API-Key': process.env.SUBSCAN_API_KEY,
+    },
+  })
+
+  const availableBalance = data.data.detail.CFG.available_balance
+  const circulatingSupply = availableBalance.substring(0, availableBalance.length - 18)
+
+  res.send(circulatingSupply)
+}

functions/src/getTotalIssuance.ts

@@ -0,0 +1,14 @@
+import { ApiPromise, WsProvider } from '@polkadot/api'
+
+export default async function getTotalIssuance(req, res) {
+  const CENTRIFUGE_MAINNET_WSS_RPC = 'wss://fullnode.centrifuge.io'
+
+  const wsProvider = new WsProvider(CENTRIFUGE_MAINNET_WSS_RPC)
+  const api = await ApiPromise.create({ provider: wsProvider })
+
+  const totalIssuanceRaw = await api.query.balances.totalIssuance()
+  const totalIssuance = totalIssuanceRaw.toString()
+  const integer = totalIssuance.substring(0, totalIssuance.length - 18)
+
+  res.send(integer.toString())
+}

package.json

@@ -26,9 +26,11 @@
     "@centrifuge/centrifuge-react": "0.1.0",
     "@centrifuge/fabric": "1.3.2",
     "@polkadot/util-crypto": "^11",
+    "axios": "^1.6.2",
     "babel-plugin-styled-components": "^2.0.7",
     "cheerio": "^1.0.0-rc.12",
     "embla-carousel-react": "^7.0.3",
+    "express": "^4.18.2",
     "focus-trap-react": "^10.0.0",
     "gatsby": "^4.23.1",
     "gatsby-plugin-google-gtag": "^4.24.0",

yarn.lock

@@ -5213,6 +5213,15 @@ axios@^0.21.1:
   dependencies:
     follow-redirects "^1.14.0"
 
+axios@^1.6.2:
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-1.6.2.tgz#de67d42c755b571d3e698df1b6504cde9b0ee9f2"
+  integrity sha512-7i24Ri4pmDRfJTR7LDBhsOTtcm+9kjX5WiY1X3wIisx6G9So3pfMkEiU7emUBe46oceVImccTEM3k6C5dbVW8A==
+  dependencies:
+    follow-redirects "^1.15.0"
+    form-data "^4.0.0"
+    proxy-from-env "^1.1.0"
+
 axobject-query@^3.1.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/axobject-query/-/axobject-query-3.2.1.tgz#39c378a6e3b06ca679f29138151e45b2b32da62a"
@@ -7725,7 +7734,7 @@ express-http-proxy@^1.6.3:
     es6-promise "^4.1.1"
     raw-body "^2.3.0"
 
-express@^4.16.4, express@^4.17.1:
+express@^4.16.4, express@^4.17.1, express@^4.18.2:
   version "4.18.2"
   resolved "https://registry.yarnpkg.com/express/-/express-4.18.2.tgz#3fabe08296e930c796c19e3c516979386ba9fd59"
   integrity sha512-5/PsL6iGPdfQ/lKM1UuielYgv3BUoJfz1aUwU9vHZ+J7gyvwdQXFEBIEIaxeGf0GIcreATNyBExtalisDbuMqQ==
@@ -8039,7 +8048,7 @@ focus-trap@^7.5.3:
   dependencies:
     tabbable "^6.2.0"
 
-follow-redirects@^1.14.0:
+follow-redirects@^1.14.0, follow-redirects@^1.15.0:
   version "1.15.3"
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.3.tgz#fe2f3ef2690afce7e82ed0b44db08165b207123a"
   integrity sha512-1VzOtuEM8pC9SFU1E+8KfTjZyMztRsgEfwQl44z8A25uy13jSzTj6dyK2Df52iV0vgHCfBwLhDWevLn95w5v6Q==
@@ -12371,6 +12380,11 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/proxy-compare/-/proxy-compare-2.5.1.tgz#17818e33d1653fbac8c2ec31406bce8a2966f600"
   integrity sha512-oyfc0Tx87Cpwva5ZXezSp5V9vht1c7dZBhvuV/y3ctkgMVUmiAGDVeeB0dKhGSyT0v1ZTEQYpe/RXlBVBNuCLA==
 
+proxy-from-env@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-1.1.0.tgz#e102f16ca355424865755d2c9e8ea4f24d58c3e2"
+  integrity sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==
+
 pseudomap@^1.0.1, pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"