From f15c75bb8e76eb22e760aa6e8da99de505ca9d15 Mon Sep 17 00:00:00 2001
From: Willian Mitsuda <wmitsuda@gmail.com>
Date: Sat, 24 Jul 2021 20:33:45 -0300
Subject: [PATCH] Add support for external files

---
 src/AddressTransactions.tsx |   4 +-
 src/address/Contract.tsx    | 107 ++++++++++--------------------------
 src/address/Contracts.tsx   |  98 +++++++++++++++++++++++++++++++++
 src/url.ts                  |   7 +++
 4 files changed, 137 insertions(+), 79 deletions(-)
 create mode 100644 src/address/Contracts.tsx

diff --git a/src/AddressTransactions.tsx b/src/AddressTransactions.tsx
index ae60c21..1d124de 100644
--- a/src/AddressTransactions.tsx
+++ b/src/AddressTransactions.tsx
@@ -16,7 +16,7 @@ import Copy from "./components/Copy";
 import ContentFrame from "./ContentFrame";
 import TabGroup from "./components/TabGroup";
 import Tab from "./components/Tab";
-import Contract from "./address/Contract";
+import Contracts from "./address/Contracts";
 import UndefinedPageControl from "./search/UndefinedPageControl";
 import ResultHeader from "./search/ResultHeader";
 import PendingResults from "./search/PendingResults";
@@ -273,7 +273,7 @@ const AddressTransactions: React.FC = () => {
                 </ContentFrame>
               </Route>
               <Route path="/address/:addressOrName/contract" exact>
-                <Contract checksummedAddress={checksummedAddress} />
+                <Contracts checksummedAddress={checksummedAddress} />
               </Route>
             </Switch>
           </>
diff --git a/src/address/Contract.tsx b/src/address/Contract.tsx
index 357e606..317348d 100644
--- a/src/address/Contract.tsx
+++ b/src/address/Contract.tsx
@@ -1,100 +1,53 @@
-import React, { useState, useEffect, useContext } from "react";
-import { ethers } from "ethers";
-import ContentFrame from "../ContentFrame";
+import React, { useState } from "react";
 import Highlight from "react-highlight";
-import InfoRow from "../components/InfoRow";
-import { sourcifyMetadata } from "../url";
-import { RuntimeContext } from "../useRuntime";
 
 import "highlight.js/styles/stackoverflow-light.css";
 import hljs from "highlight.js";
 import hljsDefineSolidity from "highlightjs-solidity";
+import { useEffect } from "react";
+import { sourcifySourceFile } from "../url";
 hljsDefineSolidity(hljs);
 hljs.initHighlightingOnLoad();
 
 type ContractProps = {
   checksummedAddress: string;
+  networkId: number;
+  filename: string;
+  source: any;
 };
 
-const Contract: React.FC<ContractProps> = ({ checksummedAddress }) => {
-  const { provider } = useContext(RuntimeContext);
-  const [rawMetadata, setRawMetadata] = useState<any>();
+const Contract: React.FC<ContractProps> = ({
+  checksummedAddress,
+  networkId,
+  filename,
+  source,
+}) => {
+  const [content, setContent] = useState<string>(source.content);
   useEffect(() => {
-    if (!checksummedAddress) {
+    if (source.content) {
       return;
     }
 
-    const fetchMetadata = async () => {
-      try {
-        const result = await fetch(
-          sourcifyMetadata(checksummedAddress, provider!.network.chainId)
-        );
-        if (result.ok) {
-          const json = await result.json();
-          console.log(json);
-          setRawMetadata(json);
-          setSelected(Object.keys(json.sources)[0]);
-        } else {
-          setRawMetadata(null);
-        }
-      } catch (err) {
-        console.error(err);
-        setRawMetadata(null);
+    const readContent = async () => {
+      const normalizedFilename = filename.replaceAll("@", "_");
+      const url = sourcifySourceFile(
+        checksummedAddress,
+        networkId,
+        normalizedFilename
+      );
+      const res = await fetch(url);
+      if (res.ok) {
+        const _content = await res.text();
+        setContent(_content);
       }
     };
-    fetchMetadata();
-  }, [provider, checksummedAddress]);
-
-  const [selected, setSelected] = useState<string>();
-
-  const optimizer = rawMetadata?.settings?.optimizer;
+    readContent();
+  }, [checksummedAddress, networkId, filename, source.content]);
 
   return (
-    <ContentFrame tabs>
-      {rawMetadata && (
-        <>
-          <InfoRow title="Compiler">
-            <span>{rawMetadata.compiler?.version}</span>
-          </InfoRow>
-          <InfoRow title="Optimizer Enabled">
-            {optimizer?.enabled ? (
-              <span>
-                <span className="font-bold text-green-600">Yes</span> with{" "}
-                <span className="font-bold text-green-600">
-                  {ethers.utils.commify(optimizer?.runs)}
-                </span>{" "}
-                runs
-              </span>
-            ) : (
-              <span className="font-bold text-red-600">No</span>
-            )}
-          </InfoRow>
-        </>
-      )}
-      <div className="py-5">
-        {rawMetadata === null && (
-          <span>Couldn't find contract metadata in Sourcify repository.</span>
-        )}
-        {rawMetadata !== undefined && rawMetadata !== null && (
-          <div>
-            {Object.entries(rawMetadata.sources).map(([k]) => (
-              <button
-                className={`border-b-2 border-transparent rounded-t text-sm px-2 py-1 bg-gray-200 text-gray-500 ${
-                  selected === k ? "border-orange-300 font-bold" : ""
-                }`}
-              >
-                {k}
-              </button>
-            ))}
-            {selected && (
-              <Highlight className="w-full h-full border focus:outline-none font-code text-base">
-                {rawMetadata.sources[selected].content}
-              </Highlight>
-            )}
-          </div>
-        )}
-      </div>
-    </ContentFrame>
+    <Highlight className="w-full h-full border focus:outline-none font-code text-base">
+      {content}
+    </Highlight>
   );
 };
 
diff --git a/src/address/Contracts.tsx b/src/address/Contracts.tsx
new file mode 100644
index 0000000..1fcc81c
--- /dev/null
+++ b/src/address/Contracts.tsx
@@ -0,0 +1,98 @@
+import React, { useState, useEffect, useContext } from "react";
+import { ethers } from "ethers";
+import ContentFrame from "../ContentFrame";
+import InfoRow from "../components/InfoRow";
+import Contract from "./Contract";
+import { sourcifyMetadata } from "../url";
+import { RuntimeContext } from "../useRuntime";
+
+type ContractsProps = {
+  checksummedAddress: string;
+};
+
+const Contracts: React.FC<ContractsProps> = ({ checksummedAddress }) => {
+  const { provider } = useContext(RuntimeContext);
+  const [rawMetadata, setRawMetadata] = useState<any>();
+  useEffect(() => {
+    if (!checksummedAddress) {
+      return;
+    }
+
+    const fetchMetadata = async () => {
+      try {
+        const result = await fetch(
+          sourcifyMetadata(checksummedAddress, provider!.network.chainId)
+        );
+        if (result.ok) {
+          const json = await result.json();
+          console.log(json);
+          setRawMetadata(json);
+          setSelected(Object.keys(json.sources)[0]);
+        } else {
+          setRawMetadata(null);
+        }
+      } catch (err) {
+        console.error(err);
+        setRawMetadata(null);
+      }
+    };
+    fetchMetadata();
+  }, [provider, checksummedAddress]);
+
+  const [selected, setSelected] = useState<string>();
+
+  const optimizer = rawMetadata?.settings?.optimizer;
+
+  return (
+    <ContentFrame tabs>
+      {rawMetadata && (
+        <>
+          <InfoRow title="Compiler">
+            <span>{rawMetadata.compiler?.version}</span>
+          </InfoRow>
+          <InfoRow title="Optimizer Enabled">
+            {optimizer?.enabled ? (
+              <span>
+                <span className="font-bold text-green-600">Yes</span> with{" "}
+                <span className="font-bold text-green-600">
+                  {ethers.utils.commify(optimizer?.runs)}
+                </span>{" "}
+                runs
+              </span>
+            ) : (
+              <span className="font-bold text-red-600">No</span>
+            )}
+          </InfoRow>
+        </>
+      )}
+      <div className="py-5">
+        {rawMetadata === null && (
+          <span>Couldn't find contract metadata in Sourcify repository.</span>
+        )}
+        {rawMetadata !== undefined && rawMetadata !== null && (
+          <div>
+            {Object.entries(rawMetadata.sources).map(([k]) => (
+              <button
+                className={`border-b-2 border-transparent rounded-t text-sm px-2 py-1 bg-gray-200 text-gray-500 ${
+                  selected === k ? "border-orange-300 font-bold" : ""
+                }`}
+              >
+                {k}
+              </button>
+            ))}
+            {selected && (
+              <Contract
+                checksummedAddress={checksummedAddress}
+                networkId={provider!.network.chainId}
+                filename={selected}
+                source={rawMetadata.sources[selected]}
+              />
+            )}
+          </div>
+        )}
+      </div>
+    </ContentFrame>
+  );
+};
+
+export default React.memo(Contracts);
diff --git a/src/url.ts b/src/url.ts
index 0d3c9e6..1b4da9c 100644
--- a/src/url.ts
+++ b/src/url.ts
@@ -19,3 +19,10 @@ export const sourcifyMetadata = (
   networkId: number
 ) =>
   `http://localhost:7000/sourcify/contracts/full_match/${networkId}/${checksummedAddress}/metadata.json`;
+
+export const sourcifySourceFile = (
+  checksummedAddress: string,
+  networkId: number,
+  filepath: string
+) =>
+  `http://localhost:7000/sourcify/contracts/full_match/${networkId}/${checksummedAddress}/sources/${filepath}`;