Add third way to integrate with Sourcify

src/AddressTransactions.tsx

@@ -32,6 +32,7 @@ import { useFeeToggler } from "./search/useFeeToggler";
 import { SelectionContext, useSelection } from "./useSelection";
 import { useMultipleETHUSDOracle } from "./usePriceOracle";
 import { useSourcify } from "./useSourcify";
+import { SourcifySource } from "./url";
 
 type BlockParams = {
   addressOrName: string;
@@ -179,11 +180,13 @@ const AddressTransactions: React.FC = () => {
   const [feeDisplay, feeDisplayToggler] = useFeeToggler();
 
   const selectionCtx = useSelection();
-  const [useIPFS, setUseIPFS] = useState<boolean>(true);
+  const [sourcifySource, setSourcifySource] = useState<SourcifySource>(
+    SourcifySource.IPFS_IPNS
+  );
   const rawMetadata = useSourcify(
     checksummedAddress,
     provider?.network.chainId,
-    useIPFS
+    sourcifySource
   );
 
   return (
@@ -313,8 +316,8 @@ const AddressTransactions: React.FC = () => {
                     <Contracts
                       checksummedAddress={checksummedAddress}
                       rawMetadata={rawMetadata}
-                      useIPFS={useIPFS}
-                      setUseIPFS={setUseIPFS}
+                      sourcifySource={sourcifySource}
+                      setSourcifySource={setSourcifySource}
                     />
                   </Route>
                 </Switch>

src/address/Contract.tsx

@@ -3,6 +3,7 @@ import { Light as SyntaxHighlighter } from "react-syntax-highlighter";
 import hljs from "highlight.js";
 import docco from "react-syntax-highlighter/dist/esm/styles/hljs/docco";
 import { useContract } from "../useSourcify";
+import { SourcifySource } from "../url";
 
 import hljsDefineSolidity from "highlightjs-solidity";
 hljsDefineSolidity(hljs);
@@ -12,7 +13,7 @@ type ContractProps = {
   networkId: number;
   filename: string;
   source: any;
-  useIPFS: boolean;
+  sourcifySource: SourcifySource;
 };
 
 const Contract: React.FC<ContractProps> = ({
@@ -20,14 +21,14 @@ const Contract: React.FC<ContractProps> = ({
   networkId,
   filename,
   source,
-  useIPFS,
+  sourcifySource,
 }) => {
   const content = useContract(
     checksummedAddress,
     networkId,
     filename,
     source,
-    useIPFS
+    sourcifySource
   );
 
   return (

src/address/Contracts.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useEffect, useContext, Fragment } from "react";
 import { commify } from "@ethersproject/units";
-import { Menu, Switch } from "@headlessui/react";
+import { Menu, RadioGroup } from "@headlessui/react";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { faChevronDown } from "@fortawesome/free-solid-svg-icons/faChevronDown";
 import ContentFrame from "../ContentFrame";
@@ -10,20 +10,21 @@ import Contract from "./Contract";
 import { RuntimeContext } from "../useRuntime";
 import { Metadata } from "../useSourcify";
 import ExternalLink from "../components/ExternalLink";
-import { openInRemixURL } from "../url";
+import { openInRemixURL, SourcifySource } from "../url";
+import RadioButton from "./RadioButton";
 
 type ContractsProps = {
   checksummedAddress: string;
   rawMetadata: Metadata | null | undefined;
-  useIPFS: boolean;
-  setUseIPFS: (useIPFS: boolean) => void;
+  sourcifySource: SourcifySource;
+  setSourcifySource: (sourcifySource: SourcifySource) => void;
 };
 
 const Contracts: React.FC<ContractsProps> = ({
   checksummedAddress,
   rawMetadata,
-  useIPFS,
-  setUseIPFS,
+  sourcifySource,
+  setSourcifySource,
 }) => {
   const { provider } = useContext(RuntimeContext);
 
@@ -37,20 +38,20 @@ const Contracts: React.FC<ContractsProps> = ({
 
   return (
     <ContentFrame tabs>
-      <InfoRow title="Use IPFS">
-        <Switch
-          className={`flex items-center h-7 w-12 px-1 rounded-full transition duration-200 ${
-            useIPFS ? "bg-blue-500" : "bg-blue-900"
-          }`}
-          checked={useIPFS}
-          onChange={setUseIPFS}
-        >
-          <span
-            className={`inline-block border rounded-full w-5 h-5 bg-white transform duration-200 ${
-              useIPFS ? "" : "translate-x-5"
-            }`}
-          ></span>
-        </Switch>
+      <InfoRow title="Sourcify integration">
+        <RadioGroup value={sourcifySource} onChange={setSourcifySource}>
+          <div className="flex space-x-2">
+            <RadioButton value={SourcifySource.IPFS_IPNS}>
+              Resolve IPNS
+            </RadioButton>
+            <RadioButton value={SourcifySource.CENTRAL_SERVER}>
+              Sourcify Servers
+            </RadioButton>
+            <RadioButton value={SourcifySource.CUSTOM_SNAPSHOT_SERVER}>
+              Local Snapshot
+            </RadioButton>
+          </div>
+        </RadioGroup>
       </InfoRow>
       {rawMetadata && (
         <>
@@ -76,6 +77,9 @@ const Contracts: React.FC<ContractsProps> = ({
         </>
       )}
       <div className="py-5">
+        {rawMetadata === undefined && (
+          <span>Getting data from Sourcify repository...</span>
+        )}
         {rawMetadata === null && (
           <span>
             Address is not a contract or couldn't find contract metadata in
@@ -139,7 +143,7 @@ const Contracts: React.FC<ContractsProps> = ({
                   networkId={provider!.network.chainId}
                   filename={selected}
                   source={rawMetadata.sources[selected]}
-                  useIPFS={useIPFS}
+                  sourcifySource={sourcifySource}
                 />
               )}
             </div>

src/address/RadioButton.tsx

@@ -0,0 +1,24 @@
+import React from "react";
+import { RadioGroup } from "@headlessui/react";
+import { SourcifySource } from "../url";
+
+type RadioButtonProps = {
+  value: SourcifySource;
+};
+
+const RadioButton: React.FC<RadioButtonProps> = ({ value, children }) => (
+  <RadioGroup.Option
+    className={({ checked }) =>
+      `border rounded px-2 py-1 cursor-pointer ${
+        checked
+          ? "bg-blue-400 hover:bg-blue-500 text-white"
+          : "hover:bg-gray-200"
+      }`
+    }
+    value={value}
+  >
+    {children}
+  </RadioGroup.Option>
+);
+
+export default RadioButton;

src/url.ts

@@ -14,29 +14,52 @@ export const blockURL = (blockNum: BlockTag) => `/block/${blockNum}`;
 
 export const blockTxsURL = (blockNum: BlockTag) => `/block/${blockNum}/txs`;
 
-const sourcifyRootHash =
+export enum SourcifySource {
+  // Resolve trusted IPNS for root IPFS
+  IPFS_IPNS,
+
+  // Centralized Sourcify servers
+  CENTRAL_SERVER,
+
+  // Snapshot server
+  CUSTOM_SNAPSHOT_SERVER,
+}
+
+const sourcifyIPNS =
   "k51qzi5uqu5dll0ocge71eudqnrgnogmbr37gsgl12uubsinphjoknl6bbi41p";
-const ipfsGatewayPrefix = `https://ipfs.io/ipns/${sourcifyRootHash}`;
+const ipfsGatewayPrefix = `https://ipfs.io/ipns/${sourcifyIPNS}`;
+// const ipfsGatewayPrefix = "http://localhost:8080/ipfs/QmWQoGfrLcizHueg3YkgDCh1S7SkfSP9A7H8YeZmUDfbnn"
 const sourcifyHttpRepoPrefix = `https://repo.sourcify.dev`;
+const snapshotPrefix = "http://localhost:3006";
+
+const resolveSourcifySource = (source: SourcifySource) => {
+  if (source === SourcifySource.IPFS_IPNS) {
+    return ipfsGatewayPrefix;
+  }
+  if (source === SourcifySource.CENTRAL_SERVER) {
+    return sourcifyHttpRepoPrefix;
+  }
+  return snapshotPrefix;
+};
 
 export const sourcifyMetadata = (
   checksummedAddress: string,
   networkId: number,
-  useIPFS: boolean
+  source: SourcifySource
 ) =>
-  `${
-    useIPFS ? ipfsGatewayPrefix : sourcifyHttpRepoPrefix
-  }/contracts/full_match/${networkId}/${checksummedAddress}/metadata.json`;
+  `${resolveSourcifySource(
+    source
+  )}/contracts/full_match/${networkId}/${checksummedAddress}/metadata.json`;
 
 export const sourcifySourceFile = (
   checksummedAddress: string,
   networkId: number,
   filepath: string,
-  useIPFS: boolean
+  source: SourcifySource
 ) =>
-  `${
-    useIPFS ? ipfsGatewayPrefix : sourcifyHttpRepoPrefix
-  }/contracts/full_match/${networkId}/${checksummedAddress}/sources/${filepath}`;
+  `${resolveSourcifySource(
+    source
+  )}/contracts/full_match/${networkId}/${checksummedAddress}/sources/${filepath}`;
 
 export const openInRemixURL = (checksummedAddress: string, networkId: number) =>
   `https://remix.ethereum.org/#call=source-verification//fetchAndSave//${checksummedAddress}//${networkId}`;

src/useSourcify.ts

@@ -1,5 +1,5 @@
 import { useState, useEffect } from "react";
-import { sourcifyMetadata, sourcifySourceFile } from "./url";
+import { sourcifyMetadata, SourcifySource, sourcifySourceFile } from "./url";
 
 export type Metadata = {
   version: string;
@@ -39,7 +39,7 @@ export type Metadata = {
 export const useSourcify = (
   checksummedAddress: string | undefined,
   chainId: number | undefined,
-  useIPFS: boolean
+  source: SourcifySource
 ) => {
   const [rawMetadata, setRawMetadata] = useState<Metadata | null | undefined>();
 
@@ -48,12 +48,13 @@ export const useSourcify = (
       return;
     }
 
+    setRawMetadata(undefined);
     const fetchMetadata = async () => {
       try {
         const contractMetadataURL = sourcifyMetadata(
           checksummedAddress,
           chainId,
-          useIPFS
+          source
         );
         const result = await fetch(contractMetadataURL);
         if (result.ok) {
@@ -68,7 +69,7 @@ export const useSourcify = (
       }
     };
     fetchMetadata();
-  }, [checksummedAddress, chainId, useIPFS]);
+  }, [checksummedAddress, chainId, source]);
 
   return rawMetadata;
 };
@@ -78,7 +79,7 @@ export const useContract = (
   networkId: number,
   filename: string,
   source: any,
-  useIPFS: boolean = true
+  sourcifySource: SourcifySource
 ) => {
   const [content, setContent] = useState<string>(source.content);
 
@@ -93,7 +94,7 @@ export const useContract = (
         checksummedAddress,
         networkId,
         normalizedFilename,
-        useIPFS
+        sourcifySource
       );
       const res = await fetch(url);
       if (res.ok) {
@@ -102,7 +103,7 @@ export const useContract = (
       }
     };
     readContent();
-  }, [checksummedAddress, networkId, filename, source.content, useIPFS]);
+  }, [checksummedAddress, networkId, filename, source.content, sourcifySource]);
 
   return content;
 };