src/components/copyModal.tsx

@@ -0,0 +1,27 @@
+import { Dialog, DialogContent, DialogTitle } from '@mui/material'
+import { CopyToClipboard } from './copyToClipboard'
+
+interface CopyModalProps {
+  open: boolean
+  handleClose: () => void
+  title: string
+  textToCopy: string
+}
+
+export const CopyModal = ({
+  open,
+  handleClose,
+  title,
+  textToCopy
+}: CopyModalProps) => {
+  return (
+    <Dialog open={open} onClose={handleClose} maxWidth="xs">
+      <DialogTitle>{title}</DialogTitle>
+      <DialogContent>
+        <CopyToClipboard textToCopy={textToCopy} />
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+export default CopyModal

src/components/copyToClipboard.tsx

@@ -0,0 +1,51 @@
+import { ContentCopy } from '@mui/icons-material/'
+import { Box, IconButton, Typography } from '@mui/material'
+import { toast } from 'react-toastify'
+
+type Props = {
+  textToCopy: string
+}
+
+export const CopyToClipboard = ({ textToCopy }: Props) => {
+  const handleCopyClick = () => {
+    navigator.clipboard.writeText(textToCopy)
+    toast.success('Copied to clipboard', {
+      autoClose: 1000,
+      hideProgressBar: true
+    })
+  }
+
+  return (
+    <Box
+      sx={{
+        display: 'flex',
+        alignItems: 'center',
+        width: '100%'
+      }}
+    >
+      <Typography
+        onClick={(e) => {
+          e.stopPropagation()
+          handleCopyClick()
+        }}
+        component="label"
+        sx={{
+          flex: '1',
+          overflow: 'auto',
+          whiteSpace: 'nowrap',
+          cursor: 'pointer'
+        }}
+      >
+        {textToCopy}
+      </Typography>
+      <IconButton
+        onClick={(e) => {
+          e.stopPropagation()
+          handleCopyClick()
+        }}
+      >
+        <ContentCopy />
+      </IconButton>
+    </Box>
+  )
+}

src/controllers/AuthController.ts

@@ -58,7 +58,7 @@ export class AuthController {
     const { hostname } = window.location
 
     const authEvent: EventTemplate = {
-      kind: 1,
+      kind: 27235,
       tags: [],
       content: `${hostname}-${timestamp}`,
       created_at: timestamp

src/controllers/MetadataController.ts

@@ -206,15 +206,15 @@ export class MetadataController {
 
     if (userRelays.length === 0) return null
 
-    // filter for finding user's first kind 1 event
+    // filter for finding user's first kind 0 event
     const eventFilter: Filter = {
-      kinds: [kinds.ShortTextNote],
+      kinds: [kinds.Metadata],
       authors: [hexKey]
     }
 
     const pool = new SimplePool()
 
-    // find user's kind 1 events published on user's relays
+    // find user's kind 0 events published on user's relays
     const events = await pool.querySync(userRelays, eventFilter)
     if (events && events.length) {
       // sort events by created_at time in ascending order

src/pages/create/index.tsx

@@ -47,11 +47,15 @@ import { DndProvider } from 'react-dnd'
 import { HTML5Backend } from 'react-dnd-html5-backend'
 import type { Identifier, XYCoord } from 'dnd-core'
 import { useDrag, useDrop } from 'react-dnd'
+import saveAs from 'file-saver'
+import CopyModal from '../../components/copyModal'
 
 export const CreatePage = () => {
   const navigate = useNavigate()
   const [isLoading, setIsLoading] = useState(false)
   const [loadingSpinnerDesc, setLoadingSpinnerDesc] = useState('')
+  const [openCopyModal, setOpenCopyModel] = useState(false)
+  const [textToCopy, setTextToCopy] = useState('')
 
   const [authUrl, setAuthUrl] = useState<string>()
 
@@ -329,58 +333,65 @@ export const CreatePage = () => {
     const encryptedArrayBuffer = await encryptArrayBuffer(
       arraybuffer,
       encryptionKey
-    )
+    ).finally(() => setIsLoading(false))
 
     const blob = new Blob([encryptedArrayBuffer])
 
-    setLoadingSpinnerDesc('Uploading zip file to file storage.')
-    const fileUrl = await uploadToFileStorage(blob, nostrController)
-      .then((url) => {
-        toast.success('zip file uploaded to file storage')
-        return url
-      })
-      .catch((err) => {
-        console.log('err in upload:>> ', err)
-        setIsLoading(false)
-        toast.error(err.message || 'Error occurred in uploading zip file')
-        return null
-      })
+    if (navigator.onLine) {
+      setIsLoading(true)
+      setLoadingSpinnerDesc('Uploading zip file to file storage.')
+      const fileUrl = await uploadToFileStorage(blob, nostrController)
+        .then((url) => {
+          toast.success('zip file uploaded to file storage')
+          return url
+        })
+        .catch((err) => {
+          console.log('err in upload:>> ', err)
+          setIsLoading(false)
+          toast.error(err.message || 'Error occurred in uploading zip file')
+          return null
+        })
 
-    if (!fileUrl) return
+      if (!fileUrl) return
 
-    setLoadingSpinnerDesc('Sending DM to signers/viewers')
+      setLoadingSpinnerDesc('Sending DM to signers/viewers')
 
-    // send DM to first signer if exists
-    if (signers.length > 0) {
-      await sendDM(
-        fileUrl,
-        encryptionKey,
-        signers[0].pubkey,
-        nostrController,
-        true,
-        setAuthUrl
-      )
-    } else {
-      // send DM to all viewers if no signer
-      for (const viewer of viewers) {
-        // todo: execute in parallel
+      // send DM to first signer if exists
+      if (signers.length > 0) {
         await sendDM(
           fileUrl,
           encryptionKey,
-          viewer.pubkey,
+          signers[0].pubkey,
           nostrController,
-          false,
+          true,
           setAuthUrl
         )
+      } else {
+        // send DM to all viewers if no signer
+        for (const viewer of viewers) {
+          // todo: execute in parallel
+          await sendDM(
+            fileUrl,
+            encryptionKey,
+            viewer.pubkey,
+            nostrController,
+            false,
+            setAuthUrl
+          )
+        }
       }
-    }
-    setIsLoading(false)
+      setIsLoading(false)
 
-    navigate(
-      `${appPrivateRoutes.sign}?file=${encodeURIComponent(
-        fileUrl
-      )}&key=${encodeURIComponent(encryptionKey)}`
-    )
+      navigate(
+        `${appPrivateRoutes.sign}?file=${encodeURIComponent(
+          fileUrl
+        )}&key=${encodeURIComponent(encryptionKey)}`
+      )
+    } else {
+      saveAs(blob, 'request.sigit')
+      setTextToCopy(encryptionKey)
+      setOpenCopyModel(true)
+    }
   }
 
   if (authUrl) {
@@ -471,6 +482,15 @@ export const CreatePage = () => {
           </>
         )}
       </Box>
+      <CopyModal
+        open={openCopyModal}
+        handleClose={() => {
+          setOpenCopyModel(false)
+          navigate(appPrivateRoutes.sign)
+        }}
+        title="Decryption key for Sigit file"
+        textToCopy={textToCopy}
+      />
     </>
   )
 }

src/pages/sign/index.tsx

@@ -59,7 +59,7 @@ import {
   Download,
   HourglassTop
 } from '@mui/icons-material'
-
+import CopyModal from '../../components/copyModal'
 enum SignedStatus {
   Fully_Signed,
   User_Is_Next_Signer,
@@ -79,6 +79,8 @@ export const SignPage = () => {
 
   const [isLoading, setIsLoading] = useState(true)
   const [loadingSpinnerDesc, setLoadingSpinnerDesc] = useState('')
+  const [openCopyModal, setOpenCopyModel] = useState(false)
+  const [textToCopy, setTextToCopy] = useState('')
 
   const [meta, setMeta] = useState<Meta | null>(null)
   const [signedStatus, setSignedStatus] = useState<SignedStatus>()
@@ -98,6 +100,9 @@ export const SignPage = () => {
 
   const [nextSinger, setNextSinger] = useState<string>()
 
+  // This state variable indicates whether the logged-in user is a signer, a creator, or neither.
+  const [isSignerOrCreator, setIsSignerOrCreator] = useState(false)
+
   const usersPubkey = useSelector((state: State) => state.auth.usersPubkey)
 
   const [authUrl, setAuthUrl] = useState<string>()
@@ -167,7 +172,20 @@ export const SignPage = () => {
       // there's no signer just viewers. So its fully signed
       setSignedStatus(SignedStatus.Fully_Signed)
     }
-  }, [signers, signedBy, usersPubkey])
+
+    // Determine and set the status of the user
+    if (submittedBy && usersPubkey && submittedBy === usersPubkey) {
+      // If the submission was made by the user, set the status to true
+      setIsSignerOrCreator(true)
+    } else if (usersPubkey) {
+      // Convert the user's public key from hex to npub format
+      const usersNpub = hexToNpub(usersPubkey)
+      if (signers.includes(usersNpub)) {
+        // If the user's npub is in the list of signers, set the status to true
+        setIsSignerOrCreator(true)
+      }
+    }
+  }, [signers, signedBy, usersPubkey, submittedBy])
 
   useEffect(() => {
     const fileUrl = searchParams.get('file')
@@ -236,6 +254,7 @@ export const SignPage = () => {
     if (!zip) return
 
     setZip(zip)
+    setDisplayInput(false)
 
     setLoadingSpinnerDesc('Parsing meta.json')
 
@@ -414,75 +433,79 @@ export const SignPage = () => {
 
     const blob = new Blob([encryptedArrayBuffer])
 
-    setLoadingSpinnerDesc('Uploading zip file to file storage.')
-    const fileUrl = await uploadToFileStorage(blob, nostrController)
-      .then((url) => {
-        toast.success('zip file uploaded to file storage')
-        return url
-      })
-      .catch((err) => {
-        console.log('err in upload:>> ', err)
-        setIsLoading(false)
-        toast.error(err.message || 'Error occurred in uploading zip file')
-        return null
-      })
+    if (navigator.onLine) {
+      setLoadingSpinnerDesc('Uploading zip file to file storage.')
+      const fileUrl = await uploadToFileStorage(blob, nostrController)
+        .then((url) => {
+          toast.success('zip file uploaded to file storage')
+          return url
+        })
+        .catch((err) => {
+          console.log('err in upload:>> ', err)
+          setIsLoading(false)
+          toast.error(err.message || 'Error occurred in uploading zip file')
+          return null
+        })
 
-    if (!fileUrl) return
+      if (!fileUrl) return
 
-    // check if the current user is the last signer
-    const usersNpub = hexToNpub(usersPubkey!)
-    const lastSignerIndex = signers.length - 1
-    const signerIndex = signers.indexOf(usersNpub)
-    const isLastSigner = signerIndex === lastSignerIndex
+      // check if the current user is the last signer
+      const usersNpub = hexToNpub(usersPubkey!)
+      const lastSignerIndex = signers.length - 1
+      const signerIndex = signers.indexOf(usersNpub)
+      const isLastSigner = signerIndex === lastSignerIndex
 
-    // if current user is the last signer, then send DMs to all signers and viewers
-    if (isLastSigner) {
-      const userSet = new Set<`npub1${string}`>()
+      // if current user is the last signer, then send DMs to all signers and viewers
+      if (isLastSigner) {
+        const userSet = new Set<`npub1${string}`>()
 
-      if (submittedBy) {
-        userSet.add(hexToNpub(submittedBy))
-      }
+        if (submittedBy) {
+          userSet.add(hexToNpub(submittedBy))
+        }
 
-      signers.forEach((signer) => {
-        userSet.add(signer)
-      })
+        signers.forEach((signer) => {
+          userSet.add(signer)
+        })
 
-      viewers.forEach((viewer) => {
-        userSet.add(viewer)
-      })
+        viewers.forEach((viewer) => {
+          userSet.add(viewer)
+        })
 
-      const users = Array.from(userSet)
+        const users = Array.from(userSet)
 
-      for (const user of users) {
-        // todo: execute in parallel
+        for (const user of users) {
+          // todo: execute in parallel
+          await sendDM(
+            fileUrl,
+            key,
+            npubToHex(user)!,
+            nostrController,
+            false,
+            setAuthUrl
+          )
+        }
+      } else {
+        const nextSigner = signers[signerIndex + 1]
         await sendDM(
           fileUrl,
           key,
-          npubToHex(user)!,
+          npubToHex(nextSigner)!,
           nostrController,
-          false,
+          true,
           setAuthUrl
         )
       }
+
+      setIsLoading(false)
+
+      // update search params with updated file url and encryption key
+      setSearchParams({
+        file: fileUrl,
+        key: key
+      })
     } else {
-      const nextSigner = signers[signerIndex + 1]
-      await sendDM(
-        fileUrl,
-        key,
-        npubToHex(nextSigner)!,
-        nostrController,
-        true,
-        setAuthUrl
-      )
+      handleDecryptedArrayBuffer(arrayBuffer).finally(() => setIsLoading(false))
     }
-
-    setIsLoading(false)
-
-    // update search params with updated file url and encryption key
-    setSearchParams({
-      file: fileUrl,
-      key: key
-    })
   }
 
   const handleExport = async () => {
@@ -549,6 +572,37 @@ export const SignPage = () => {
     navigate(appPrivateRoutes.verify)
   }
 
+  const handleExportSigit = async () => {
+    if (!zip) return
+
+    const arrayBuffer = await zip
+      .generateAsync({
+        type: 'arraybuffer',
+        compression: 'DEFLATE',
+        compressionOptions: {
+          level: 6
+        }
+      })
+      .catch((err) => {
+        console.log('err in zip:>> ', err)
+        setIsLoading(false)
+        toast.error(err.message || 'Error occurred in generating zip file')
+        return null
+      })
+
+    if (!arrayBuffer) return
+
+    const key = await generateEncryptionKey()
+
+    setLoadingSpinnerDesc('Encrypting zip file')
+    const encryptedArrayBuffer = await encryptArrayBuffer(arrayBuffer, key)
+    const blob = new Blob([encryptedArrayBuffer])
+    saveAs(blob, 'exported.sigit')
+
+    setTextToCopy(key)
+    setOpenCopyModel(true)
+  }
+
   /**
    * 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
@@ -637,6 +691,7 @@ export const SignPage = () => {
             <Box className={styles.inputBlock}>
               <MuiFileInput
                 placeholder="Select file"
+                inputProps={{ accept: '.sigit' }}
                 value={selectedFile}
                 onChange={(value) => setSelectedFile(value)}
               />
@@ -675,6 +730,7 @@ export const SignPage = () => {
               nextSigner={nextSinger}
               getPrevSignersSig={getPrevSignersSig}
             />
+
             {signedStatus === SignedStatus.Fully_Signed && (
               <Box sx={{ mt: 1, display: 'flex', justifyContent: 'center' }}>
                 <Button onClick={handleExport} variant="contained">
@@ -690,9 +746,24 @@ export const SignPage = () => {
                 </Button>
               </Box>
             )}
+
+            {isSignerOrCreator &&
+              signedStatus === SignedStatus.User_Is_Not_Next_Signer && (
+                <Box sx={{ mt: 1, display: 'flex', justifyContent: 'center' }}>
+                  <Button onClick={handleExportSigit} variant="contained">
+                    Export Sigit
+                  </Button>
+                </Box>
+              )}
           </>
         )}
       </Box>
+      <CopyModal
+        open={openCopyModal}
+        handleClose={() => setOpenCopyModel(false)}
+        title="Decryption key for Sigit file"
+        textToCopy={textToCopy}
+      />
     </>
   )
 }

src/utils/misc.ts

@@ -189,7 +189,7 @@ export const signEventForMetaFile = async (
 ) => {
   // Construct the event metadata for the meta file
   const event: EventTemplate = {
-    kind: 1, // Event type for meta file
+    kind: 27235, // Event type for meta file
     content: content, // content for event
     created_at: Math.floor(Date.now() / 1000), // Current timestamp
     tags: []