feat: make addresses clickable in evidence, hide button if no file at…

…tached, transaction hash

subgraph/core/schema.graphql

@@ -318,6 +318,7 @@ type ClassicEvidence implements Evidence @entity(immutable: true) {
   sender: User!
   senderAddress: String!
   timestamp: BigInt!
+  transactionHash: Bytes!
   name: String
   description: String
   fileURI: String

subgraph/core/src/EvidenceModule.ts

@@ -17,6 +17,7 @@ export function handleEvidenceEvent(event: EvidenceEvent): void {
   evidence.evidenceIndex = evidenceIndex.plus(ONE).toString();
   const userId = event.params._party.toHexString();
   evidence.timestamp = event.block.timestamp;
+  evidence.transactionHash = event.transaction.hash;
   evidence.evidence = event.params._evidence;
   evidence.evidenceGroup = evidenceGroupID.toString();
   evidence.sender = userId;

web/src/components/EvidenceCard.tsx

@@ -1,4 +1,4 @@
-import React from "react";
+import React, { useMemo } from "react";
 import styled, { css } from "styled-components";
 
 import Identicon from "react-identicons";
@@ -9,6 +9,7 @@ import { Card } from "@kleros/ui-components-library";
 
 import AttachmentIcon from "svgs/icons/attachment.svg";
 
+import { DEFAULT_CHAIN, getChain } from "consts/chains";
 import { formatDate } from "utils/date";
 import { getIpfsUrl } from "utils/getIpfsUrl";
 import { shortenAddress } from "utils/shortenAddress";
@@ -116,6 +117,19 @@ const StyledLink = styled(Link)`
   )}
 `;
 
+const StyledA = styled.a`
+  :hover {
+    text-decoration: underline;
+    p {
+      color: ${({ theme }) => theme.primaryBlue};
+    }
+    label {
+      cursor: pointer;
+      color: ${({ theme }) => theme.primaryBlue};
+    }
+  }
+`;
+
 const AttachedFileText: React.FC = () => (
   <>
     <DesktopText>View attached file</DesktopText>
@@ -128,7 +142,24 @@ interface IEvidenceCard extends Pick<Evidence, "evidence" | "timestamp" | "name"
   index: number;
 }
 
-const EvidenceCard: React.FC<IEvidenceCard> = ({ evidence, sender, index, timestamp, name, description, fileURI }) => {
+const EvidenceCard: React.FC<IEvidenceCard> = ({
+  evidence,
+  sender,
+  index,
+  timestamp,
+  transactionHash,
+  name,
+  description,
+  fileURI,
+}) => {
+  const addressExplorerLink = useMemo(() => {
+    return `${getChain(DEFAULT_CHAIN)?.blockExplorers?.default.url}/address/${sender}`;
+  }, [sender]);
+
+  const transactionExplorerLink = useMemo(() => {
+    return `${getChain(DEFAULT_CHAIN)?.blockExplorers?.default.url}/tx/${transactionHash}`;
+  }, [transactionHash]);
+
   return (
     <StyledCard>
       <TextContainer>
@@ -145,15 +176,19 @@ const EvidenceCard: React.FC<IEvidenceCard> = ({ evidence, sender, index, timest
       <BottomShade>
         <AccountContainer>
           <Identicon size="24" string={sender} />
-          <p>{shortenAddress(sender)}</p>
+          <StyledA href={addressExplorerLink} rel="noreferrer" target="_blank">
+            <p>{shortenAddress(sender)}</p>
+          </StyledA>
         </AccountContainer>
-        <Timestamp>{formatDate(Number(timestamp), true)}</Timestamp>
-        {fileURI && (
+        <StyledA href={transactionExplorerLink} rel="noreferrer" target="_blank">
+          <Timestamp>{formatDate(Number(timestamp), true)}</Timestamp>
+        </StyledA>
+        {fileURI && fileURI !== "-" ? (
           <StyledLink to={`attachment/?url=${getIpfsUrl(fileURI)}`}>
             <AttachmentIcon />
             <AttachedFileText />
           </StyledLink>
-        )}
+        ) : null}
       </BottomShade>
     </StyledCard>
   );

web/src/hooks/queries/useEvidences.ts

@@ -15,6 +15,7 @@ export const evidenceFragment = graphql(`
       id
     }
     timestamp
+    transactionHash
     name
     description
     fileURI

web/src/pages/Cases/CaseDetails/Evidence/index.tsx

@@ -95,14 +95,16 @@ const Evidence: React.FC = () => {
       <EvidenceSearch {...{ search, setSearch, evidenceGroup: disputeData?.dispute?.externalDisputeId }} />
       <ScrollButton small Icon={DownArrow} text="Scroll to latest" onClick={scrollToLatest} />
       {evidences?.realEvidences ? (
-        evidences?.realEvidences.map(({ evidence, sender, timestamp, name, description, fileURI, evidenceIndex }) => (
-          <EvidenceCard
-            key={timestamp}
-            index={parseInt(evidenceIndex)}
-            sender={sender?.id}
-            {...{ evidence, timestamp, name, description, fileURI }}
-          />
-        ))
+        evidences?.realEvidences.map(
+          ({ evidence, sender, timestamp, transactionHash, name, description, fileURI, evidenceIndex }) => (
+            <EvidenceCard
+              key={timestamp}
+              index={parseInt(evidenceIndex)}
+              sender={sender?.id}
+              {...{ evidence, timestamp, transactionHash, name, description, fileURI }}
+            />
+          )
+        )
       ) : (
         <SkeletonEvidenceCard />
       )}
@@ -111,12 +113,12 @@ const Evidence: React.FC = () => {
           <Divider />
           {showSpam ? (
             evidences?.spamEvidences.map(
-              ({ evidence, sender, timestamp, name, description, fileURI, evidenceIndex }) => (
+              ({ evidence, sender, timestamp, transactionHash, name, description, fileURI, evidenceIndex }) => (
                 <EvidenceCard
                   key={timestamp}
                   index={parseInt(evidenceIndex)}
                   sender={sender?.id}
-                  {...{ evidence, timestamp, name, description, fileURI }}
+                  {...{ evidence, timestamp, transactionHash, name, description, fileURI }}
                 />
               )
             )