Polygon Bridge

1export const name = 'Polygon Bridge';
2export const version = '0.0.2';
3export const license = 'MIT';
4
5const ETHER_BRIDGE = '0x8484Ef722627bf18ca5Ae6BcF031c23E6e922B30'
6const ERC_20_BRIDGE = '0x40ec5b33f54e0e8a33a975908c5ba1c14e5bbbdf'
7const MATIC_BRIDGE = '0x401F6c983eA34274ec46f84D70b31C151321188b'
8const MATIC_TOKEN = '0x7d1afa7b718fb893db30a3abc0cfc608aacfebb0'
9
10interface Token {
11  id: string
12  address: string
13  stablecoin?: boolean
14  coingeckoId?: string
15  decimals?: number
16}
17
18const tokens: Token[] = [
19  {
20    id: 'USDC',
21    address: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
22    stablecoin: true,
23    decimals: 6,
24  },
25  {
26    id: 'USDT',
27    address: '0xdac17f958d2ee523a2206206994597c13d831ec7',
28    stablecoin: true,
29    decimals: 6,
30  },
31  {
32    id: 'Dai',
33    address: '0x6b175474e89094c44da98b954eedeac495271d0f',
34    stablecoin: true,
35  },
36  {
37    id: 'aavegochi',
38    address: '0x3F382DbD960E3a9bbCeaE22651E88158d2791550',
39    coingeckoId: 'aavegotchi',
40  },
41]
42
43export function setup(sdk: Context) {
44  const getDepositted = async () => {
45    const [
46      ethDepositted,
47      ethPrice,
48      maticDepositted,
49      maticPrice,
50      otherValues,
51    ] = await Promise.all([
52      sdk.ethers.getProvider('ethereum').getBalance(ETHER_BRIDGE),
53      sdk.coinGecko.getCurrentPrice('ethereum'),
54
55      sdk.ethers.getERC20Contract(MATIC_TOKEN).balanceOf(MATIC_BRIDGE),
56      sdk.coinGecko.getCurrentPrice('matic-network'),
57
58      Promise.all(tokens.map(async (token) => {
59        const [bridged, price] = await Promise.all([
60          sdk.ethers.getERC20Contract(token.address).balanceOf(ERC_20_BRIDGE),
61          token.stablecoin ? Promise.resolve(1) : sdk.defiLlama.getCurrentPrice('coingecko', token.coingeckoId),
62        ]);
63
64        const bridgedDecimal = bridged.toString() / (10 ** (token.decimals || 18));
65        return bridgedDecimal * price;
66      })),
67    ]);
68
69    const ethValue = ethDepositted.toString() / 1e18 * ethPrice;
70    const maticValue = maticDepositted.toString() / 1e18 * maticPrice;
71    const otherValue = otherValues.reduce((a, b) => a + b, 0);
72    return ethValue + otherValue + maticValue;
73  }
74
75  const getReverse = async () => {
76    return 0;
77  }
78
79  sdk.registerBundle('polygon', {
80    name: 'Polygon',
81    icon: sdk.ipfs.getDataURILoader('QmcakfgwRpoXotCQdBc8fos31X4p9ujvJBuigSh9C59cKS', 'image/svg+xml'),
82    category: 'light-client',
83  });
84
85  sdk.register({
86    id: 'polygon',
87    bundle: 'polygon',
88    queries: {
89      currentValueBridgedAToB: getDepositted,
90      currentValueBridgedBToA: getReverse,
91    },
92    metadata: {
93      name: 'Polygon',
94      icon: sdk.ipfs.getDataURILoader('QmcakfgwRpoXotCQdBc8fos31X4p9ujvJBuigSh9C59cKS', 'image/svg+xml'),
95
96      chainA: 'ethereum',
97      chainB: 'polygon',
98      category: 'multisig',
99    },
100  });
101}
102