Aptos Bridge

1export const name = 'Aptos Bridge';
2export const version = '0.1.1';
3export const license = 'MIT';
4
5interface Token {
6  stablecoin?: boolean
7  coingecko?: string
8  decimals?: number
9}
10
11const tokens: { [id: string]: Token } = {
12  ETH: {
13    coingecko: 'ethereum',
14  },
15  USDC: {
16    stablecoin: true,
17    decimals: 6,
18  },
19  USDD: {
20    stablecoin: true,
21  },
22  USDT: {
23    stablecoin: true,
24    decimals: 6,
25  },
26  BUSDT: {
27    stablecoin: true,
28  },
29}
30
31interface Chain {
32  id: string;
33  name?: string;
34  escrow: string;
35  tokens: any[];
36}
37
38const chains: Chain[] = [
39  {
40    id: 'ethereum',
41    escrow: '0x50002CdFe7CCb0C41F519c6Eb0653158d11cd907',
42    tokens: [
43      {
44        id: 'ETH',
45        address: '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2',
46      },
47      {
48        id: 'USDC',
49        address: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48',
50      },
51      {
52        id: 'USDT',
53        address: '0xdac17f958d2ee523a2206206994597c13d831ec7',
54      },
55    ],
56  },
57  {
58    id: 'avalanche',
59    escrow: '0xA5972EeE0C9B5bBb89a5B16D1d65f94c9EF25166',
60    tokens: [
61      {
62        id: 'USDC',
63        address: '0xb97ef9ef8734c71904d8002f8b6bc66dd9c48a6e',
64      },
65      {
66        id: 'USDT',
67        address: '0x9702230a8ea53601f5cd2dc00fdbc13d4df4a8c7',
68      },
69    ],
70  },
71  {
72    id: 'bsc',
73    name: 'BNB Chain',
74    escrow: '0x2762409Baa1804D94D8c0bCFF8400B78Bf915D5B',
75    tokens: [
76      {
77        id: 'USDD',
78        address: '0xd17479997F34dd9156Deef8F95A52D81D265be9c',
79      },
80      {
81        id: 'BUSDT',
82        address: '0x55d398326f99059ff775485246999027b3197955',
83      },
84    ],
85  },
86  {
87    id: 'optimism',
88    escrow: '0x86Bb63148d17d445Ed5398ef26Aa05Bf76dD5b59',
89    tokens: [
90      {
91        id: 'ETH',
92        address: '0x4200000000000000000000000000000000000006',
93      },
94      {
95        id: 'USDC',
96        address: '0x7f5c764cbc14f9669b88837ca1490cca17c31607',
97      },
98    ],
99  },
100  {
101    id: 'arbitrum-one',
102    name: 'Arbitrum One',
103    escrow: '0x1BAcC2205312534375c8d1801C27D28370656cFf',
104    tokens: [
105      {
106        id: 'ETH',
107        address: '0x82af49447d8a07e3bd95bd0d56f35241523fbab1',
108      },
109      {
110        id: 'USDC',
111        address: '0xff970a61a04b1ca14834a43f5de4533ebddb5cc8',
112      },
113    ],
114  },
115  {
116    id: 'polygon',
117    escrow: '0x488863D609F3A673875a914fBeE7508a1DE45eC6',
118    tokens: [
119      {
120        id: 'USDC',
121        address: '0x2791bca1f2de4661ed88a30c99a7a9449aa84174',
122      },
123      {
124        id: 'USDT',
125        address: '0xc2132d05d31c914a87c6611c10748aeb04b58e8f',
126      },
127    ],
128  },
129]
130
131export function setup(sdk: Context) {
132  const getPrice = async (id: string): Promise<number> => {
133    const token = tokens[id];
134
135    if (!token) {
136      sdk.log.warn(`Token ${id} not found`);
137      return 0;
138    }
139    if (token.stablecoin) {
140      return 1;
141    }
142
143    const price = await sdk.defiLlama.getCurrentPrice('coingecko', token.coingecko);
144    return price;
145  }
146
147  const getBridged = async (chain: Chain) => {
148    const amounts = await Promise.all(
149      chain.tokens.map(async (token): Promise<number> => {
150        const [amount, price] = await Promise.all([
151          sdk.ethers.getERC20Contract(token.address, chain.id).balanceOf(chain.escrow),
152          getPrice(token.id),
153        ]);
154        const decimals = tokens[token.id] ? tokens[token.id].decimals || 18 : 0;
155        return amount / (10 ** decimals) * price;
156      })
157    );
158    sdk.log(amounts)
159
160    const sum = amounts.reduce((a, b) => a + b, 0);
161    return sum;
162  }
163
164  const metadata = {
165    name: 'LayerZero Aptos Bridge',
166    icon: sdk.ipfs.getDataURILoader('QmbuRx9b74p2b8gATPiFsEoeEdUSwnVQ5B1ksq6SyDH7q9', 'image/svg+xml'),
167    category: 'native',
168  };
169
170  sdk.registerBundle('aptos', metadata);
171
172  for (const chain of chains) {
173    sdk.register({
174      id: `aptos-${chain.id}`,
175      bundle: 'aptos',
176      queries: {
177        currentValueBridgedAToB: () => getBridged(chain),
178        currentValueBridgedBToA: async () => 0,
179      },
180      metadata: {
181        ...metadata,
182        subtitle: chain.name || `${chain.id.charAt(0).toUpperCase()}${chain.id.substr(1)}`,
183
184        chainA: chain.id,
185        chainB: 'aptos',
186      },
187    });
188  }
189}
190