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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,37 @@ | ||
import { BigIntStr } from "@daimo/common"; | ||
import { polygonUSDC } from "@daimo/contract"; | ||
import { isAddress, getAddress } from "viem"; | ||
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export function parsePaymentUri(uri: string) { | ||
const [protocol, rest] = uri.split(":"); | ||
if (protocol !== "ethereum") throw new Error("Invalid protocol"); | ||
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const [tokenAddressAndChain, pathAndQuery] = rest.split("/"); | ||
const [tokenAddress, chainId] = tokenAddressAndChain.split("@"); | ||
if ( | ||
!isAddress(tokenAddress) || | ||
getAddress(tokenAddress) !== polygonUSDC.token | ||
) { | ||
throw new Error("Invalid token address"); | ||
} | ||
if (!chainId || chainId !== "137") { | ||
throw new Error("Unsupported chain ID"); | ||
} | ||
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const [path, queryString] = pathAndQuery.split("?"); | ||
if (path !== "transfer") throw new Error("Invalid path"); | ||
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const params = new URLSearchParams(queryString); | ||
const recipientAddress = params.get("address"); | ||
const amount = params.get("uint256"); | ||
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if (!recipientAddress || !isAddress(recipientAddress)) { | ||
throw new Error("Invalid recipient address"); | ||
} | ||
if (!amount) throw new Error("Missing amount"); | ||
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return { | ||
recipientAddress: getAddress(recipientAddress), | ||
amount: BigInt(Number(amount)).toString() as BigIntStr, | ||
}; | ||
} |
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Original file line number | Diff line number | Diff line change |
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import { parsePaymentUri } from "../src/logic/paymentURI"; | ||
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describe("Payment URI", () => { | ||
// https://github.com/daimo-eth/daimo/issues/1356 | ||
it("Parses Bitrefill URI", () => { | ||
const uri = parsePaymentUri( | ||
`ethereum:0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359@137/transfer?address=0xaCB6230043d1Fc3dE02a43Aa748540bb9F260931&uint256=1e8` | ||
); | ||
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expect(uri.recipientAddress).toEqual( | ||
"0xaCB6230043d1Fc3dE02a43Aa748540bb9F260931" | ||
); | ||
expect(uri.amount).toEqual("100000000"); | ||
}); | ||
}); |