src/controllers/MetadataController.ts

@@ -1,11 +1,8 @@
-import NDK, { NDKEvent, NDKSubscription } from '@nostr-dev-kit/ndk'
 import {
   Event,
-  EventTemplate,
   Filter,
   VerifiedEvent,
   kinds,
-  nip19,
   validateEvent,
   verifyEvent
 } from 'nostr-tools'
@@ -13,7 +10,7 @@ import { toast } from 'react-toastify'
 import { EventEmitter } from 'tseep'
 import { NostrController, relayController } from '.'
 import { localCache } from '../services'
-import { NostrJoiningBlock, ProfileMetadata, RelaySet } from '../types'
+import { ProfileMetadata, RelaySet } from '../types'
 import {
   findRelayListAndUpdateCache,
   findRelayListInCache,
@@ -21,7 +18,6 @@ import {
   getMostPopularRelays,
   getUserRelaySet,
   isOlderThanOneWeek,
-  queryNip05,
   unixNow
 } from '../utils'
 
@@ -218,128 +214,6 @@ export class MetadataController extends EventEmitter {
       })
   }
 
-  public getNostrJoiningBlockNumber = async (
-    hexKey: string
-  ): Promise<NostrJoiningBlock | null> => {
-    const relaySet = await this.findRelayListMetadata(hexKey)
-
-    const userRelays: string[] = []
-
-    // find user's relays
-    if (relaySet.write.length > 0) {
-      userRelays.push(...relaySet.write)
-    } else {
-      const metadata = await this.findMetadata(hexKey)
-      if (!metadata) return null
-
-      const metadataContent = this.extractProfileMetadataContent(metadata)
-
-      if (metadataContent?.nip05) {
-        const nip05Profile = await queryNip05(metadataContent.nip05)
-
-        if (nip05Profile && nip05Profile.pubkey === hexKey) {
-          userRelays.push(...nip05Profile.relays)
-        }
-      }
-    }
-
-    if (userRelays.length === 0) return null
-
-    // filter for finding user's first kind 0 event
-    const eventFilter: Filter = {
-      kinds: [kinds.Metadata],
-      authors: [hexKey]
-    }
-
-    // find user's kind 0 event published on user's relays
-    const event = await relayController.fetchEvent(eventFilter, userRelays)
-
-    if (event) {
-      const { created_at } = event
-
-      // initialize job request
-      const jobEventTemplate: EventTemplate = {
-        content: '',
-        created_at: unixNow(),
-        kind: 68001,
-        tags: [
-          ['i', `${created_at * 1000}`],
-          ['j', 'blockChain-block-number']
-        ]
-      }
-
-      // sign job request event
-      const jobSignedEvent =
-        await this.nostrController.signEvent(jobEventTemplate)
-
-      const relays = [
-        'wss://relay.damus.io',
-        'wss://relay.primal.net',
-        'wss://relayable.org'
-      ]
-
-      await relayController.publish(jobSignedEvent, relays).catch((err) => {
-        console.error(
-          'Error occurred in publish blockChain-block-number DVM job',
-          err
-        )
-      })
-
-      const subscribeWithTimeout = (
-        subscription: NDKSubscription,
-        timeoutMs: number
-      ): Promise<string> => {
-        return new Promise((resolve, reject) => {
-          const eventHandler = (event: NDKEvent) => {
-            subscription.stop()
-            resolve(event.content)
-          }
-
-          subscription.on('event', eventHandler)
-
-          // Set up a timeout to stop the subscription after a specified time
-          const timeout = setTimeout(() => {
-            subscription.stop() // Stop the subscription
-            reject(new Error('Subscription timed out')) // Reject the promise with a timeout error
-          }, timeoutMs)
-
-          // Handle subscription close event
-          subscription.on('close', () => clearTimeout(timeout))
-        })
-      }
-
-      const dvmNDK = new NDK({
-        explicitRelayUrls: relays
-      })
-
-      await dvmNDK.connect(2000)
-
-      // filter for getting DVM job's result
-      const sub = dvmNDK.subscribe({
-        kinds: [68002 as number],
-        '#e': [jobSignedEvent.id],
-        '#p': [jobSignedEvent.pubkey]
-      })
-
-      // asynchronously get block number from dvm job with 20 seconds timeout
-      const dvmJobResult = await subscribeWithTimeout(sub, 20000)
-
-      const encodedEventPointer = nip19.neventEncode({
-        id: event.id,
-        relays: userRelays,
-        author: event.pubkey,
-        kind: event.kind
-      })
-
-      return {
-        block: parseInt(dvmJobResult),
-        encodedEventPointer
-      }
-    }
-
-    return null
-  }
-
   public validate = (event: Event) => validateEvent(event) && verifyEvent(event)
 
   public getEmptyMetadataEvent = (): Event => {

src/pages/profile/index.tsx

@@ -12,7 +12,12 @@ import { MetadataController } from '../../controllers'
 import { getProfileSettingsRoute } from '../../routes'
 import { State } from '../../store/rootReducer'
 import { NostrJoiningBlock, ProfileMetadata } from '../../types'
-import { getRoboHashPicture, hexToNpub, shorten } from '../../utils'
+import {
+  getNostrJoiningBlockNumber,
+  getRoboHashPicture,
+  hexToNpub,
+  shorten
+} from '../../utils'
 import styles from './style.module.scss'
 import { Container } from '../../components/Container'
 
@@ -51,8 +56,7 @@ export const ProfilePage = () => {
 
   useEffect(() => {
     if (pubkey) {
-      metadataController
-        .getNostrJoiningBlockNumber(pubkey)
+      getNostrJoiningBlockNumber(pubkey)
         .then((res) => {
           setNostrJoiningBlock(res)
         })

src/pages/settings/profile/index.tsx

@@ -26,7 +26,11 @@ import { setMetadataEvent } from '../../../store/actions'
 import { LoadingSpinner } from '../../../components/LoadingSpinner'
 import { LoginMethods } from '../../../store/auth/types'
 import { SmartToy } from '@mui/icons-material'
-import { getRoboHashPicture, unixNow } from '../../../utils'
+import {
+  getNostrJoiningBlockNumber,
+  getRoboHashPicture,
+  unixNow
+} from '../../../utils'
 import { Container } from '../../../components/Container'
 
 export const ProfileSettingsPage = () => {
@@ -71,8 +75,7 @@ export const ProfileSettingsPage = () => {
 
   useEffect(() => {
     if (pubkey) {
-      metadataController
-        .getNostrJoiningBlockNumber(pubkey)
+      getNostrJoiningBlockNumber(pubkey)
         .then((res) => {
           setNostrJoiningBlock(res)
         })

src/utils/dvm.ts

@@ -0,0 +1,135 @@
+import { EventTemplate, Filter, kinds, nip19 } from 'nostr-tools'
+import { queryNip05, unixNow } from '.'
+import {
+  MetadataController,
+  NostrController,
+  relayController
+} from '../controllers'
+import { NostrJoiningBlock } from '../types'
+import NDK, { NDKEvent, NDKSubscription } from '@nostr-dev-kit/ndk'
+
+export const getNostrJoiningBlockNumber = async (
+  hexKey: string
+): Promise<NostrJoiningBlock | null> => {
+  const metadataController = new MetadataController()
+
+  const relaySet = await metadataController.findRelayListMetadata(hexKey)
+
+  const userRelays: string[] = []
+
+  // find user's relays
+  if (relaySet.write.length > 0) {
+    userRelays.push(...relaySet.write)
+  } else {
+    const metadata = await metadataController.findMetadata(hexKey)
+    if (!metadata) return null
+
+    const metadataContent =
+      metadataController.extractProfileMetadataContent(metadata)
+
+    if (metadataContent?.nip05) {
+      const nip05Profile = await queryNip05(metadataContent.nip05)
+
+      if (nip05Profile && nip05Profile.pubkey === hexKey) {
+        userRelays.push(...nip05Profile.relays)
+      }
+    }
+  }
+
+  if (userRelays.length === 0) return null
+
+  // filter for finding user's first kind 0 event
+  const eventFilter: Filter = {
+    kinds: [kinds.Metadata],
+    authors: [hexKey]
+  }
+
+  // find user's kind 0 event published on user's relays
+  const event = await relayController.fetchEvent(eventFilter, userRelays)
+
+  if (event) {
+    const { created_at } = event
+
+    // initialize job request
+    const jobEventTemplate: EventTemplate = {
+      content: '',
+      created_at: unixNow(),
+      kind: 68001,
+      tags: [
+        ['i', `${created_at * 1000}`],
+        ['j', 'blockChain-block-number']
+      ]
+    }
+
+    const nostrController = NostrController.getInstance()
+
+    // sign job request event
+    const jobSignedEvent = await nostrController.signEvent(jobEventTemplate)
+
+    const relays = [
+      'wss://relay.damus.io',
+      'wss://relay.primal.net',
+      'wss://relayable.org'
+    ]
+
+    await relayController.publish(jobSignedEvent, relays).catch((err) => {
+      console.error(
+        'Error occurred in publish blockChain-block-number DVM job',
+        err
+      )
+    })
+
+    const subscribeWithTimeout = (
+      subscription: NDKSubscription,
+      timeoutMs: number
+    ): Promise<string> => {
+      return new Promise((resolve, reject) => {
+        const eventHandler = (event: NDKEvent) => {
+          subscription.stop()
+          resolve(event.content)
+        }
+
+        subscription.on('event', eventHandler)
+
+        // Set up a timeout to stop the subscription after a specified time
+        const timeout = setTimeout(() => {
+          subscription.stop() // Stop the subscription
+          reject(new Error('Subscription timed out')) // Reject the promise with a timeout error
+        }, timeoutMs)
+
+        // Handle subscription close event
+        subscription.on('close', () => clearTimeout(timeout))
+      })
+    }
+
+    const dvmNDK = new NDK({
+      explicitRelayUrls: relays
+    })
+
+    await dvmNDK.connect(2000)
+
+    // filter for getting DVM job's result
+    const sub = dvmNDK.subscribe({
+      kinds: [68002 as number],
+      '#e': [jobSignedEvent.id],
+      '#p': [jobSignedEvent.pubkey]
+    })
+
+    // asynchronously get block number from dvm job with 20 seconds timeout
+    const dvmJobResult = await subscribeWithTimeout(sub, 20000)
+
+    const encodedEventPointer = nip19.neventEncode({
+      id: event.id,
+      relays: userRelays,
+      author: event.pubkey,
+      kind: event.kind
+    })
+
+    return {
+      block: parseInt(dvmJobResult),
+      encodedEventPointer
+    }
+  }
+
+  return null
+}

src/utils/index.ts

@@ -1,4 +1,5 @@
 export * from './crypto'
+export * from './dvm'
 export * from './hash'
 export * from './localStorage'
 export * from './mark'