feat: add avalanche support (#303)

* feat: partial avalanche support

* chore: upgrade chainsauce for improved RPC fetching

* fix: change Avalanche RPC to one with more relaxed limits

* feat: add avalanche fuji

* chore: revert chainsauce upgrade

---------

Co-authored-by: Mohamed Boudra <[email protected]>

Author: bard

.env.example

@@ -7,6 +7,8 @@ PGN_TESTNET_RPC_URL=https://sepolia.publicgoods.network
 PGN_RPC_URL=https://rpc.publicgoods.network
 ARBITRUM_RPC_URL=https://arb-mainnet.g.alchemy.com/v2/
 ARBITRUM_GOERLI_RPC_URL=https://arb-goerli.g.alchemy.com/v2/
+AVALANCHE_RPC_URL=https://avalanche-c-chain.publicnode.com
+AVALANCHE_FUJI_RPC_URL=https://avalanche-fuji-c-chain.publicnode.com
 PASSPORT_SCORER_ID=
 COINGECKO_API_KEY=
 IPFS_GATEWAY=

src/config.ts

@@ -6,7 +6,7 @@ import { z } from "zod";
 import * as abis from "./indexer/abis/index.js";
 
 type ChainId = number;
-type CoingeckoSupportedChainId = 1 | 10 | 250 | 42161;
+type CoingeckoSupportedChainId = 1 | 10 | 250 | 42161 | 43114;
 
 export type Token = {
   code: string;
@@ -470,7 +470,7 @@ const CHAINS: Chain[] = [
     rpc: rpcUrl
       .default("https://rpc-mumbai.maticvigil.com/")
       .parse(process.env.POLYGON_MUMBAI_RPC_URL),
-    pricesFromTimestamp: Date.UTC(2023, 9, 19, 0, 0, 0),
+    pricesFromTimestamp: Date.UTC(2023, 8, 19, 0, 0, 0),
     tokens: [
       {
         code: "MATIC",
@@ -512,7 +512,7 @@ const CHAINS: Chain[] = [
     rpc: rpcUrl
       .default("https://polygon-rpc.com")
       .parse(process.env.POLYGON_RPC_URL),
-    pricesFromTimestamp: Date.UTC(2023, 9, 19, 0, 0, 0),
+    pricesFromTimestamp: Date.UTC(2023, 8, 19, 0, 0, 0),
     tokens: [
       {
         code: "MATIC",
@@ -548,6 +548,90 @@ const CHAINS: Chain[] = [
       },
     ],
   },
+  {
+    id: 43114,
+    name: "avalanche",
+    rpc: rpcUrl
+      .default("https://avalanche-c-chain.publicnode.com")
+      .parse(process.env.AVALANCHE_RPC_URL),
+    pricesFromTimestamp: Date.UTC(2023, 8, 19, 0, 0, 0),
+    tokens: [
+      {
+        code: "AVAX",
+        address: "0x0000000000000000000000000000000000000000",
+        decimals: 18,
+        priceSource: {
+          chainId: 43114,
+          address: "0x0000000000000000000000000000000000000000",
+        },
+      },
+      {
+        code: "USDC",
+        address: "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
+        decimals: 6,
+        priceSource: {
+          chainId: 1,
+          address: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+        },
+      },
+    ],
+    subscriptions: [
+      {
+        address: "0xDF9BF58Aa1A1B73F0e214d79C652a7dd37a6074e",
+        abi: abis.v2.ProjectRegistry,
+      },
+      {
+        address: "0x8eC471f30cA797FD52F9D37A47Be2517a7BD6912",
+        abi: abis.v2.RoundFactory,
+      },
+      {
+        address: "0x2AFA4bE0f2468347A2F086c2167630fb1E58b725",
+        abi: abis.v2.QuadraticFundingVotingStrategyFactory,
+      },
+    ],
+  },
+  {
+    id: 43113,
+    name: "avalanche-fuji",
+    rpc: rpcUrl
+      .default("https://avalanche-fuji-c-chain.publicnode.com")
+      .parse(process.env.AVALANCHE_FUJI_RPC_URL),
+    pricesFromTimestamp: Date.UTC(2023, 8, 19, 0, 0, 0),
+    tokens: [
+      {
+        code: "AVAX",
+        address: "0x0000000000000000000000000000000000000000",
+        decimals: 18,
+        priceSource: {
+          chainId: 43114,
+          address: "0x0000000000000000000000000000000000000000",
+        },
+      },
+      {
+        code: "USDC",
+        address: "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
+        decimals: 6,
+        priceSource: {
+          chainId: 1,
+          address: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+        },
+      },
+    ],
+    subscriptions: [
+      {
+        address: "0xDF9BF58Aa1A1B73F0e214d79C652a7dd37a6074e",
+        abi: abis.v2.ProjectRegistry,
+      },
+      {
+        address: "0x8eC471f30cA797FD52F9D37A47Be2517a7BD6912",
+        abi: abis.v2.RoundFactory,
+      },
+      {
+        address: "0x2AFA4bE0f2468347A2F086c2167630fb1E58b725",
+        abi: abis.v2.QuadraticFundingVotingStrategyFactory,
+      },
+    ],
+  },
 ];
 
 export const getDecimalsForToken = (

src/prices/coinGecko.ts

@@ -7,13 +7,15 @@ const platforms: { [key: number]: string } = {
   250: "fantom",
   10: "optimistic-ethereum",
   42161: "arbitrum-one",
+  43114: "avalanche",
 };
 
 const nativeTokens: { [key: number]: string } = {
   1: "ethereum",
   250: "fantom",
   10: "ethereum",
   42161: "ethereum",
+  43114: "avalanche-2",
 };
 
 type Timestamp = number;