Compound Issuance

1export const name = 'Compound Issuance';
2export const version = '0.2.0';
3export const license = 'MIT';
4
5const COMP = '0xc00e94cb662c3520282e6f5717214004a7f26888';
6const RESEVOIR = '0x2775b1c75658be0f640272ccb8c72ac986009e38';
7const COMPTROLER = '0x3d9819210a31b4961b30ef54be2aed79b9c9cd3b';
8const COMPTROLER_API = [
9  'function compRate() external view returns (uint256)',
10]
11
12export async function setup(sdk: Context) {
13  const getCompIssuance = async () => {
14    const today = sdk.date.formatDate(new Date())
15    const weekAgo = sdk.date.offsetDaysFormatted(today, -7)
16
17    const comptrolerContract = sdk.ethers.getContract(COMPTROLER, COMPTROLER_API)
18
19    const [compRate, todayBlock, weekAgoBlock, compPrice] = await Promise.all([
20      comptrolerContract.compRate(),
21      sdk.chainData.getBlockNumber(today),
22      sdk.chainData.getBlockNumber(weekAgo),
23      sdk.coinGecko.getCurrentPrice('compound-governance-token'),
24    ])
25
26    const compRateDecimal = compRate.toString() / 1e18
27    const compInLastWeek = compRateDecimal * (todayBlock - weekAgoBlock)
28
29    return compInLastWeek * compPrice
30  }
31
32  const getCompIssuanceRate = async () => {
33    const comptrolerContract = sdk.ethers.getContract(COMPTROLER, COMPTROLER_API)
34    const compToken = sdk.ethers.getERC20Contract(COMP)
35
36    const today = sdk.date.formatDate(new Date())
37    const yearAgo = sdk.date.offsetDaysFormatted(today, -365)
38
39    const [compRate, blockToday, blockYearAgo, supply, comptrolerBalance, resevoirBalance] = await Promise.all([
40      comptrolerContract.compRate(),
41      sdk.chainData.getBlockNumber(today),
42      sdk.chainData.getBlockNumber(yearAgo),
43      compToken.totalSupply(),
44      compToken.balanceOf(COMPTROLER),
45      compToken.balanceOf(RESEVOIR),
46    ])
47
48    const blocksInYear = blockToday - blockYearAgo
49
50    const adjustedSupply = (supply.toString() - comptrolerBalance.toString() - resevoirBalance.toString()) / 1e18
51    const issuanceRate = compRate * blocksInYear / 1e18 / adjustedSupply
52    return issuanceRate
53  }
54
55  sdk.register({
56    id: 'compound',
57    queries: {
58      issuance7DayAvgUSD: getCompIssuance,
59      issuanceRateCurrent: getCompIssuanceRate,
60    },
61    metadata: {
62      icon: sdk.ipfs.getDataURILoader('QmZpZsg829EnBxE2MPZykZpAfsxyRsu6EuGbtfTkf2EFNj', 'image/svg+xml'),
63      name: 'Compound',
64      category: 'app',
65      issuanceDescription: 'COMP tokens are issued to borrowers and lenders.',
66      website: 'https://compound.finance',
67    },
68  })
69}
70