Ren Bridged Assets

1export const name = 'Ren Bridged Assets';
2export const version = '0.0.3';
3export const license = 'MIT';
4
5interface Asset {
6  id: string
7  nativeChain: string
8  wrappersByChain: { [chain: string]: { address: string, decimals: number } }
9  stablecoin?: boolean
10  coingeckoId?: string
11}
12
13interface Chain {
14  id: string
15  name: string
16}
17
18const assets: Asset[] = [
19  {
20    id: 'btc',
21    nativeChain: 'bitcoin',
22    coingeckoId: 'bitcoin',
23    wrappersByChain: {
24      ethereum: {
25        address: '0xEB4C2781e4ebA804CE9a9803C67d0893436bB27D',
26        decimals: 8,
27      },
28      bsc: {
29        address: '0xfCe146bF3146100cfe5dB4129cf6C82b0eF4Ad8c',
30        decimals: 8,
31      },
32      fantom: {
33        address: '0xDBf31dF14B66535aF65AaC99C32e9eA844e14501',
34        decimals: 8,
35      },
36      avalanche: {
37        address: '0xDBf31dF14B66535aF65AaC99C32e9eA844e14501',
38        decimals: 8,
39      },
40      'arbitrum-one': {
41        address: '0xDBf31dF14B66535aF65AaC99C32e9eA844e14501',
42        decimals: 8,
43      },
44      optimism: {
45        address: '0x85f6583762Bc76d775eAB9A7456db344f12409F7',
46        decimals: 8,
47      },
48      polygon: {
49        address: '0xDBf31dF14B66535aF65AaC99C32e9eA844e14501',
50        decimals: 8,
51      },
52      solana: {
53        address: 'CDJWUqTcYTVAKXAVXoQZFes5JUFc7owSeq7eMQcDSbo5',
54        decimals: 8,
55      },
56      // acala: {
57      //   address: '0x0000000000000000000100000000000000000014',
58      //   decimals: 12,
59      // },
60    },
61  },
62];
63
64const chains: Chain[] = [
65  {
66    id: 'bitcoin',
67    name: 'Bitcoin',
68  },
69  {
70    id: 'ethereum',
71    name: 'Ethereum',
72  },
73  {
74    id: 'solana',
75    name: 'Solana',
76  },
77  {
78    id: 'bsc',
79    name: 'BSC',
80  },
81  {
82    id: 'avalanche',
83    name: 'Avalanche',
84  },
85  {
86    id: 'fantom',
87    name: 'Fantom',
88  },
89  {
90    id: 'optimism',
91    name: 'Optimism',
92  },
93  {
94    id: 'arbitrum-one',
95    name: 'Arbitrum One',
96  },
97  {
98    id: 'polygon',
99    name: 'Polygon',
100  },
101  // {
102  //   id: 'acala',
103  //   name: 'Acala',
104  // },
105]
106
107export function setup(sdk: Context) {
108  sdk.ethers.addProvider('avalanche', 'https://api.avax.network/ext/bc/C/rpc');
109  sdk.ethers.addProvider('fantom', 'https://rpc.ankr.com/fantom/');
110
111  const getEVMSupply = (chain: string) => async (addr: string) => {
112    const supply = await sdk.ethers.getERC20Contract(addr, chain).totalSupply();
113    return parseInt(supply.toString());
114  }
115
116  const getSolanaTokenSupply = async (addr: string) => {
117    const data = await sdk.http.post('https://api.mainnet-beta.solana.com', {
118      jsonrpc: "2.0",
119      id: 1,
120      method: "getTokenSupply",
121      params: [addr],
122    });
123    return parseInt(data.result.value.amount);
124  }
125
126  const getSupply: { [chain: string]: (addr: string) => Promise<number> } = {
127    ethereum: getEVMSupply('ethereum'),
128    bsc: getEVMSupply('bsc'),
129    avalanche: getEVMSupply('avalanche'),
130    fantom: getEVMSupply('fantom'),
131    optimism: getEVMSupply('optimism'),
132    'arbitrum-one': getEVMSupply('arbitrum-one'),
133    polygon: getEVMSupply('polygon'),
134    solana: getSolanaTokenSupply,
135  }
136
137  const getBridged = async (chainA: string, chainB: string) => {
138    let total = 0;
139    for (const asset of assets) {
140      if (asset.nativeChain === chainA && asset.wrappersByChain[chainB]) {
141        const [wrapperSupply, price] = await Promise.all([
142          getSupply[chainB](asset.wrappersByChain[chainB].address),
143          asset.stablecoin ? Promise.resolve(1) : sdk.coinGecko.getCurrentPrice(asset.coingeckoId),
144        ]);
145        const wrapperSupplyDecimal = wrapperSupply / (10 ** asset.wrappersByChain[chainB].decimals);
146        const bridgedValue = wrapperSupplyDecimal * price;
147        total += bridgedValue;
148      }
149    }
150    return total;
151  }
152
153  sdk.registerBundle('ren', {
154    name: 'Ren',
155    icon: sdk.ipfs.getDataURILoader('QmQnRxS7jjLXVPcUJNtkidddynYiZQ4t9UpGMaAFuKbK4H', 'image/svg+xml'),
156    category: 'unknown',
157  });
158
159  // Bitcoin is the only substantial asset bridged, so skip the rest
160  for (let i = 0; i < /*chains.length*/1; i += 1) {
161    for (let j = i + 1; j < chains.length; j += 1) {
162      const chainA = chains[i];
163      const chainB = chains[j];
164
165      sdk.register({
166        id: `ren-${chainA.id}-${chainB.id}`,
167        bundle: 'ren',
168        queries: {
169          currentValueBridgedAToB: () => getBridged(chainA.id, chainB.id),
170          currentValueBridgedBToA: () => getBridged(chainB.id, chainA.id),
171        },
172        metadata: {
173          name: `Ren ${chainA.name}-${chainB.name}`,
174          icon: sdk.ipfs.getDataURILoader('QmQnRxS7jjLXVPcUJNtkidddynYiZQ4t9UpGMaAFuKbK4H', 'image/svg+xml'),
175          chainA: chainA.id,
176          chainB: chainB.id,
177        },
178      })
179    }
180  }
181}
182