102 lines
2.3 KiB
TypeScript
102 lines
2.3 KiB
TypeScript
import { ethers } from "ethers";
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import { configureChains, createClient } from "wagmi";
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import { z } from "zod";
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import { router, publicProcedure } from "@calcom/trpc/server/trpc";
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import abi from "../utils/abi.json";
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import { checkBalance, getProviders, SUPPORTED_CHAINS } from "../utils/ethereum";
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const ethRouter = router({
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// Fetch contract `name` and `symbol` or error
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contract: publicProcedure
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.input(
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z.object({
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address: z.string(),
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chainId: z.number(),
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})
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)
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.output(
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z.object({
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data: z
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.object({
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name: z.string(),
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symbol: z.string(),
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})
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.nullish(),
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error: z.string().nullish(),
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})
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)
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.query(async ({ input }) => {
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const { address, chainId } = input;
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const { provider } = configureChains(
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SUPPORTED_CHAINS.filter((chain) => chain.id === chainId),
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getProviders()
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);
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const client = createClient({
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provider,
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});
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const contract = new ethers.Contract(address, abi, client.provider);
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try {
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const name = await contract.name();
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const symbol = await contract.symbol();
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return {
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data: {
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name,
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symbol: `$${symbol}`,
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},
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};
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} catch (e) {
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return {
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data: {
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name: address,
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symbol: "$UNKNOWN",
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},
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};
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}
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}),
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// Fetch user's `balance` of either ERC-20 or ERC-721 compliant token or error
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balance: publicProcedure
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.input(
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z.object({
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address: z.string(),
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tokenAddress: z.string(),
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chainId: z.number(),
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})
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)
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.output(
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z.object({
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data: z
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.object({
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hasBalance: z.boolean(),
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})
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.nullish(),
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error: z.string().nullish(),
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})
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)
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.query(async ({ input }) => {
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const { address, tokenAddress, chainId } = input;
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try {
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const hasBalance = await checkBalance(address, tokenAddress, chainId);
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return {
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data: {
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hasBalance,
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},
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};
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} catch (e) {
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return {
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data: {
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hasBalance: false,
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},
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};
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}
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}),
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});
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export default ethRouter;
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