src/pages/sign/index.tsx

@@ -34,7 +34,6 @@ import {
   CreateSignatureEventContent,
   Meta,
   ProfileMetadata,
-  SignedEventContent,
   User,
   UserRole
 } from '../../types'
@@ -53,12 +52,7 @@ import {
   uploadToFileStorage
 } from '../../utils'
 import styles from './style.module.scss'
-import {
+import { Download } from '@mui/icons-material'
-  Cancel,
-  CheckCircle,
-  Download,
-  HourglassTop
-} from '@mui/icons-material'
 
 enum SignedStatus {
   Fully_Signed,
@@ -356,13 +350,9 @@ export const SignPage = () => {
     setLoadingSpinnerDesc('Generating hashes for files')
 
     setLoadingSpinnerDesc('Signing nostr event')
-
-    const prevSig = getPrevSignersSig(hexToNpub(usersPubkey!))
-    if (!prevSig) return
-
     const signedEvent = await signEventForMetaFile(
       JSON.stringify({
-        prevSig
+        fileHashes: currentFileHashes
       }),
       nostrController,
       setIsLoading
@@ -471,7 +461,7 @@ export const SignPage = () => {
         key,
         npubToHex(nextSigner)!,
         nostrController,
-        true,
+        false,
         setAuthUrl
       )
     }
@@ -498,13 +488,9 @@ export const SignPage = () => {
 
     setIsLoading(true)
     setLoadingSpinnerDesc('Signing nostr event')
-
-    const prevSig = await getLastSignersSig()
-    if (!prevSig) return
-
     const signedEvent = await signEventForMetaFile(
       JSON.stringify({
-        prevSig
+        fileHashes: currentFileHashes
       }),
       nostrController,
       setIsLoading
@@ -549,70 +535,6 @@ export const SignPage = () => {
     navigate(appPrivateRoutes.verify)
   }
 
-  /**
-   * This function accepts an npub of a signer and return the signature of its previous signer.
-   * This prevSig will be used in the content of the provided signer's signedEvent
-   */
-  const getPrevSignersSig = (npub: string) => {
-    if (!meta) return null
-
-    // if user is first signer then use creator's signature
-    if (signers[0] === npub) {
-      try {
-        const createSignatureEvent: Event = JSON.parse(meta.createSignature)
-        return createSignatureEvent.sig
-      } catch (error) {
-        return null
-      }
-    }
-
-    // find the index of signer
-    const currentSignerIndex = signers.findIndex((signer) => signer === npub)
-    // return null if could not found user in signer's list
-    if (currentSignerIndex === -1) return null
-    // find prev signer
-    const prevSigner = signers[currentSignerIndex - 1]
-
-    // get the signature of prev signer
-    try {
-      const prevSignersEvent: Event = JSON.parse(meta.docSignatures[prevSigner])
-      return prevSignersEvent.sig
-    } catch (error) {
-      return null
-    }
-  }
-
-  /**
-   * This function returns the signature of last signer
-   * It will be used in the content of export signature's signedEvent
-   */
-  const getLastSignersSig = () => {
-    if (!meta) return null
-
-    // if there're no signers then use creator's signature
-    if (signers.length === 0) {
-      try {
-        const createSignatureEvent: Event = JSON.parse(meta.createSignature)
-        return createSignatureEvent.sig
-      } catch (error) {
-        return null
-      }
-    }
-
-    // get last signer
-    const lastSigner = signers[signers.length - 1]
-
-    // get the signature of last signer
-    try {
-      const lastSignatureEvent: Event = JSON.parse(
-        meta.docSignatures[lastSigner]
-      )
-      return lastSignatureEvent.sig
-    } catch (error) {
-      return null
-    }
-  }
-
   if (authUrl) {
     return (
       <iframe
@@ -661,10 +583,9 @@ export const SignPage = () => {
           </>
         )}
 
-        {submittedBy && zip && meta && (
+        {submittedBy && zip && (
           <>
             <DisplayMeta
-              meta={meta}
               zip={zip}
               submittedBy={submittedBy}
               signers={signers}
@@ -673,7 +594,6 @@ export const SignPage = () => {
               currentFileHashes={currentFileHashes}
               signedBy={signedBy}
               nextSigner={nextSinger}
-              getPrevSignersSig={getPrevSignersSig}
             />
             {signedStatus === SignedStatus.Fully_Signed && (
               <Box sx={{ mt: 1, display: 'flex', justifyContent: 'center' }}>
@@ -698,7 +618,6 @@ export const SignPage = () => {
 }
 
 type DisplayMetaProps = {
-  meta: Meta
   zip: JSZip
   submittedBy: string
   signers: `npub1${string}`[]
@@ -707,11 +626,9 @@ type DisplayMetaProps = {
   currentFileHashes: { [key: string]: string | null }
   signedBy: `npub1${string}`[]
   nextSigner?: string
-  getPrevSignersSig: (usersNpub: string) => string | null
 }
 
 const DisplayMeta = ({
-  meta,
   zip,
   submittedBy,
   signers,
@@ -719,8 +636,7 @@ const DisplayMeta = ({
   creatorFileHashes,
   currentFileHashes,
   signedBy,
-  nextSigner,
+  nextSigner
-  getPrevSignersSig
 }: DisplayMetaProps) => {
   const theme = useTheme()
 
@@ -868,16 +784,16 @@ const DisplayMeta = ({
                 >
                   {filename}
                 </Typography>
-                {isValidHash && (
+                <Typography
-                  <Tooltip title="File integrity check passed" arrow>
+                  component="label"
-                    <CheckCircle sx={{ color: theme.palette.success.light }} />
+                  sx={{
-                  </Tooltip>
+                    color: isValidHash
-                )}
+                      ? theme.palette.success.light
-                {!isValidHash && (
+                      : theme.palette.error.main
-                  <Tooltip title="File integrity check failed" arrow>
+                  }}
-                    <Cancel sx={{ color: theme.palette.error.main }} />
+                >
-                  </Tooltip>
+                  {isValidHash ? 'Valid' : 'Invalid'} hash
-                )}
+                </Typography>
               </Box>
             )
           })}
@@ -893,138 +809,25 @@ const DisplayMeta = ({
             </TableRow>
           </TableHead>
           <TableBody>
-            {users.map((user) => (
+            {users.map((user, index) => {
-              <DisplayUser
-                key={user.pubkey}
-                meta={meta}
-                user={user}
-                metadata={metadata}
-                signedBy={signedBy}
-                nextSigner={nextSigner}
-                getPrevSignersSig={getPrevSignersSig}
-              />
-            ))}
-          </TableBody>
-        </Table>
-      </ListItem>
-    </List>
-  )
-}
-
-enum PrevSignatureValidationEnum {
-  Pending,
-  Valid,
-  Invalid
-}
-
-enum UserStatus {
-  Viewer = 'Viewer',
-  Awaiting = 'Awaiting Signature',
-  Signed = 'Signed',
-  Pending = 'Pending'
-}
-
-type DisplayUserProps = {
-  meta: Meta
-  user: User
-  metadata: { [key: string]: ProfileMetadata }
-  signedBy: `npub1${string}`[]
-  nextSigner?: string
-  getPrevSignersSig: (usersNpub: string) => string | null
-}
-
-const DisplayUser = ({
-  meta,
-  user,
-  metadata,
-  signedBy,
-  nextSigner,
-  getPrevSignersSig
-}: DisplayUserProps) => {
-  const theme = useTheme()
-
               const userMeta = metadata[user.pubkey]
-  const [userStatus, setUserStatus] = useState<UserStatus>(UserStatus.Pending)
-  const [prevSignatureStatus, setPreviousSignatureStatus] =
-    useState<PrevSignatureValidationEnum>(PrevSignatureValidationEnum.Pending)
 
-  useEffect(() => {
+              let signedStatus = '-'
-    if (user.role === UserRole.viewer) {
-      setUserStatus(UserStatus.Viewer)
-      return
-    }
 
+              if (user.role === UserRole.signer) {
                 // check if user has signed the document
                 const usersNpub = hexToNpub(user.pubkey)
                 if (signedBy.includes(usersNpub)) {
-      setUserStatus(UserStatus.Signed)
+                  signedStatus = 'Signed'
-      return
                 }
-
                 // check if user is the next signer
-    if (user.pubkey === nextSigner) {
+                else if (user.pubkey === nextSigner) {
-      setUserStatus(UserStatus.Awaiting)
+                  signedStatus = 'Awaiting Signature'
-      return
                 }
-  }, [user, nextSigner, signedBy])
-
-  useEffect(() => {
-    const validatePrevSignature = async () => {
-      const handleNullCase = () => {
-        setPreviousSignatureStatus(PrevSignatureValidationEnum.Invalid)
-        return
               }
 
-      // get previous signers sig from the content of current signers signed event
-      const npub = hexToNpub(user.pubkey)
-      const signedEvent = await parseJson<Event>(
-        meta.docSignatures[npub]
-      ).catch((err) => {
-        console.log(`err in parsing the singed event for ${npub}:>> `, err)
-        toast.error(
-          err.message ||
-            'error occurred in parsing the signed event signature event'
-        )
-        return null
-      })
-
-      if (!signedEvent) return handleNullCase()
-
-      // now that we have signed event of current signer, we'll extract prevSig from its content
-      const parsedContent = await parseJson<SignedEventContent>(
-        signedEvent.content
-      ).catch((err) => {
-        console.log(
-          `an error occurred in parsing the content of signedEvent of ${npub}`,
-          err
-        )
-        toast.error(
-          err.message ||
-            `an error occurred in parsing the content of signedEvent of ${npub}`
-        )
-        return null
-      })
-
-      if (!parsedContent) return handleNullCase()
-
-      const prevSignersSignature = getPrevSignersSig(npub)
-
-      if (!prevSignersSignature) return handleNullCase()
-
-      setPreviousSignatureStatus(
-        parsedContent.prevSig === prevSignersSignature
-          ? PrevSignatureValidationEnum.Valid
-          : PrevSignatureValidationEnum.Invalid
-      )
-    }
-
-    if (userStatus === UserStatus.Signed) {
-      validatePrevSignature()
-    }
-  }, [userStatus, meta.docSignatures, user.pubkey, getPrevSignersSig])
-
               return (
-    <TableRow>
+                <TableRow key={index}>
                   <TableCell className={styles.tableCell}>
                     <UserComponent
                       pubkey={user.pubkey}
@@ -1036,34 +839,16 @@ const DisplayUser = ({
                       image={userMeta?.picture}
                     />
                   </TableCell>
-      <TableCell className={styles.tableCell}>{user.role}</TableCell>
+                  <TableCell className={styles.tableCell}>
-      <TableCell>
+                    {user.role}
-        <Box sx={{ display: 'flex', alignItems: 'center', gap: '10px' }}>
-          <Typography component="label">{userStatus}</Typography>
-          {userStatus === UserStatus.Signed && (
-            <>
-              {prevSignatureStatus === PrevSignatureValidationEnum.Valid && (
-                <Tooltip title="Contains valid signature of prev signer" arrow>
-                  <CheckCircle sx={{ color: theme.palette.success.light }} />
-                </Tooltip>
-              )}
-              {prevSignatureStatus === PrevSignatureValidationEnum.Invalid && (
-                <Tooltip
-                  title="Contains invalid signature of prev signer"
-                  arrow
-                >
-                  <Cancel sx={{ color: theme.palette.error.main }} />
-                </Tooltip>
-              )}
-            </>
-          )}
-          {userStatus === UserStatus.Awaiting && (
-            <Tooltip title="Waiting for user's sign" arrow>
-              <HourglassTop />
-            </Tooltip>
-          )}
-        </Box>
                   </TableCell>
+                  <TableCell>{signedStatus}</TableCell>
                 </TableRow>
               )
+            })}
+          </TableBody>
+        </Table>
+      </ListItem>
+    </List>
+  )
 }

src/pages/verify/index.tsx

@@ -4,7 +4,6 @@ import {
   List,
   ListItem,
   ListSubheader,
-  Tooltip,
   Typography,
   useTheme
 } from '@mui/material'
@@ -16,12 +15,7 @@ import { toast } from 'react-toastify'
 import { LoadingSpinner } from '../../components/LoadingSpinner'
 import { UserComponent } from '../../components/username'
 import { MetadataController } from '../../controllers'
-import {
+import { CreateSignatureEventContent, Meta, ProfileMetadata } from '../../types'
-  CreateSignatureEventContent,
-  Meta,
-  ProfileMetadata,
-  SignedEventContent
-} from '../../types'
 import {
   getHash,
   hexToNpub,
@@ -31,7 +25,6 @@ import {
   shorten
 } from '../../utils'
 import styles from './style.module.scss'
-import { Cancel, CheckCircle } from '@mui/icons-material'
 
 export const VerifyPage = () => {
   const theme = useTheme()
@@ -215,35 +208,6 @@ export const VerifyPage = () => {
     setIsLoading(false)
   }
 
-  const getPrevSignersSig = (npub: string) => {
-    if (!meta) return null
-
-    // if user is first signer then use creator's signature
-    if (signers[0] === npub) {
-      try {
-        const createSignatureEvent: Event = JSON.parse(meta.createSignature)
-        return createSignatureEvent.sig
-      } catch (error) {
-        return null
-      }
-    }
-
-    // find the index of signer
-    const currentSignerIndex = signers.findIndex((signer) => signer === npub)
-    // return null if could not found user in signer's list
-    if (currentSignerIndex === -1) return null
-    // find prev signer
-    const prevSigner = signers[currentSignerIndex - 1]
-
-    // get the signature of prev signer
-    try {
-      const prevSignersEvent: Event = JSON.parse(meta.docSignatures[prevSigner])
-      return prevSignersEvent.sig
-    } catch (error) {
-      return null
-    }
-  }
-
   const displayUser = (pubkey: string, verifySignature = false) => {
     const profile = metadata[pubkey]
 
@@ -255,27 +219,7 @@ export const VerifyPage = () => {
       if (signedEventString) {
         try {
           const signedEvent = JSON.parse(signedEventString)
-          const isVerifiedEvent = verifyEvent(signedEvent)
+          isValidSignature = verifyEvent(signedEvent)
-
-          if (isVerifiedEvent) {
-            // get the actual signature of prev signer
-            const prevSignersSig = getPrevSignersSig(npub)
-
-            // get the signature of prev signer from the content of current signers signedEvent
-
-            try {
-              const obj: SignedEventContent = JSON.parse(signedEvent.content)
-              if (
-                obj.prevSig &&
-                prevSignersSig &&
-                obj.prevSig === prevSignersSig
-              ) {
-                isValidSignature = true
-              }
-            } catch (error) {
-              isValidSignature = false
-            }
-          }
         } catch (error) {
           console.error(
             `An error occurred in parsing and verifying the signature event for ${pubkey}`,
@@ -296,19 +240,16 @@ export const VerifyPage = () => {
         />
 
         {verifySignature && (
-          <>
+          <Typography
-            {isValidSignature && (
+            component="label"
-              <Tooltip title="Valid signature">
+            sx={{
-                <CheckCircle sx={{ color: theme.palette.success.light }} />
+              color: isValidSignature
-              </Tooltip>
+                ? theme.palette.success.light
-            )}
+                : theme.palette.error.main
-
+            }}
-            {!isValidSignature && (
+          >
-              <Tooltip title="Invalid signature">
+            {isValidSignature ? 'Valid' : 'Invalid'} Signature
-                <Cancel sx={{ color: theme.palette.error.main }} />
+          </Typography>
-              </Tooltip>
-            )}
-          </>
         )}
       </>
     )
@@ -484,20 +425,16 @@ export const VerifyPage = () => {
                           >
                             {filename}
                           </Typography>
-                          {isValidHash && (
+                          <Typography
-                            <Tooltip title="File integrity check passed" arrow>
+                            component="label"
-                              <CheckCircle
+                            sx={{
-                                sx={{ color: theme.palette.success.light }}
+                              color: isValidHash
-                              />
+                                ? theme.palette.success.light
-                            </Tooltip>
+                                : theme.palette.error.main
-                          )}
+                            }}
-                          {!isValidHash && (
+                          >
-                            <Tooltip title="File integrity check failed" arrow>
+                            {isValidHash ? 'Valid' : 'Invalid'} hash
-                              <Cancel
+                          </Typography>
-                                sx={{ color: theme.palette.error.main }}
-                              />
-                            </Tooltip>
-                          )}
                         </Box>
                       )
                     }

src/types/core.ts

@@ -19,7 +19,3 @@ export interface CreateSignatureEventContent {
   viewers: `npub1${string}`[]
   fileHashes: { [key: string]: string }
 }
-
-export interface SignedEventContent {
-  prevSig: string
-}