Ankr

1export const name = 'Ankr';
2export const version = '0.1.4';
3export const license = 'MIT';
4
5const aETHc_ADDRESS = '0xE95A203B1a91a908F9B9CE46459d101078c2c3cb';
6const aETHb_ADDRESS = '0xD01ef7C0A5d8c432fc2d1a85c66cF2327362E5C6';
7
8const aETHc_ABI = [
9  'function ratio() public view returns (uint256)',
10];
11
12const CURVE_POOL = '0xa96a65c051bf88b4095ee1f2451c2a9d43f53ae2';
13
14const CURVE_ABI = [
15  'function get_dy(int128 i, int128 j, uint256 dx) external view returns (uint256)',
16];
17
18export function setup(sdk: Context) {
19  const getTotalStakedForToken = async (tokenAddress: string) => {
20    const token = sdk.ethers.getERC20Contract(tokenAddress);
21    const supply = await token.totalSupply();
22    return supply.toString() / 1e18;
23  }
24
25  const getTotalStaked = async () => {
26 
27    let totalStaked = await getTotalStakedForToken(aETHb_ADDRESS) + await getTotalStakedForToken(aETHc_ADDRESS); 
28    return totalStaked ;
29  }
30
31  const getAPR = async () => {
32    const aETHcContract = sdk.ethers.getContract(aETHc_ADDRESS, aETHc_ABI);
33
34    const today = sdk.date.formatDate(new Date());
35    const weekAgo = sdk.date.offsetDaysFormatted(today, -7);
36
37    const ratioNow = await aETHcContract.ratio({blockTag: today});
38    const ratioWeekAgo = await aETHcContract.ratio({blockTag: weekAgo});
39
40    // get accumulated rewards per eth staked using '1 - ratio' 
41    const rewardsDiff = (1  - ( ratioNow.toString() / 1e18 )) - (1  - ( ratioWeekAgo.toString() / 1e18 ));
42
43    return rewardsDiff * 52;
44  }
45
46  const getDiscount = async () => {
47    const aETHcContract = sdk.ethers.getContract(aETHc_ADDRESS, aETHc_ABI);
48    const curve = sdk.ethers.getContract(CURVE_POOL, CURVE_ABI);
49
50    const output = await curve.get_dy(0, 1, '1000000000000000000');
51    const outputAETHC = output / 1e18;
52    const ratioNow = await aETHcContract.ratio();
53    const ratioDecimal = ratioNow / 1e18;
54
55    return outputAETHC * ratioDecimal;
56  };
57
58
59  sdk.register({
60    id: 'ankr',
61    queries: {
62      totalStakedETH: getTotalStaked,
63      apy: getAPR,
64      underlyingAssetMarketRate: getDiscount,
65    },
66    metadata: {
67      name: 'Ankr',
68      icon: sdk.ipfs.getDataURILoader('QmedFW6x588qnxWgQP9RZiNs27AXF3kREptY1cuaXXPRVS', 'image/svg+xml'),
69      tokenSymbol: 'aETHc',
70      tokenAddress: '0xE95A203B1a91a908F9B9CE46459d101078c2c3cb',
71      website: 'https://ankr.com',
72      governanceTokenSymbol: 'ANKR',
73      governanceTokenCoingecko: 'ankr-network',
74    },
75  });
76}
77
78
79