Merge pull request #54 from Permissionless-Software-Foundation/dh-nostr-library

feat(nostr): Created Nostr service library

package-lock.json

@@ -15,7 +15,7 @@
         "@fortawesome/react-fontawesome": "0.2.2",
         "@noble/hashes": "^1.8.0",
         "axios": "0.27.2",
-        "bch-dex-lib": "2.0.3",
+        "bch-dex-lib": "2.2.0",
         "bch-message-lib": "2.2.1",
         "bch-nostr": "1.3.4",
         "bch-token-sweep": "2.2.1",
@@ -10043,9 +10043,9 @@
       "license": "MIT"
     },
     "node_modules/bch-dex-lib": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/bch-dex-lib/-/bch-dex-lib-2.0.3.tgz",
-      "integrity": "sha512-aPZIlDcRziZBRKRhEuAv6G/skFjZ28+sE30fkoUY8isUIAe3C0YS7yQMoOmGSA6N46/XuhRbfQi0SRQJfrASpA==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/bch-dex-lib/-/bch-dex-lib-2.2.0.tgz",
+      "integrity": "sha512-SORqn4qNmbxfL2SbbapOpbcCB+FtqasR+GT0XRifdkXFjA3aDL0gwMsHjh8IzLZnKtPYSBcfgzKQFxEsXCJNug==",
       "license": "MIT",
       "dependencies": {
         "@chris.troutner/retry-queue": "1.0.10",

package.json

@@ -9,7 +9,7 @@
     "@fortawesome/react-fontawesome": "0.2.2",
     "@noble/hashes": "^1.8.0",
     "axios": "0.27.2",
-    "bch-dex-lib": "2.0.3",
+    "bch-dex-lib": "2.2.0",
     "bch-message-lib": "2.2.1",
     "bch-nostr": "1.3.4",
     "bch-token-sweep": "2.2.1",

src/App.js

@@ -14,7 +14,10 @@ import NavMenu from './components/nav-menu'
 import useAppState from './hooks/state'
 import { UninitializedView, InitializedView } from './components/starter-views'
 
-const sigleViewPaths = ['/profile']
+// Paths with custom async loader
+// Single Views, load minimal async services in order to prevent the long-time screen loader.
+const sigleViewPaths = ['/profile', 'user-data']
+
 function App (props) {
   // Load all the app state into a single object that can be passed to child
   // components.
@@ -45,6 +48,9 @@ function App (props) {
         await asyncLoad.loadWalletLib()
         const walletTemp = await asyncLoad.initStarterWallet(appData.serverUrl, appData.lsState.mnemonic, appData)
         appData.setWallet(walletTemp)
+        // Get the BCH spot price
+        addToModal('Getting BCH spot price in USD', appData)
+        await asyncLoad.getUSDExchangeRate(walletTemp, appData.updateBchWalletState, appData)
       }
 
       // Update Modal State

src/components/app-body/nfts-for-sale/index.js

@@ -172,7 +172,7 @@ function NftsForSale (props) {
     } catch (error) {
       setIconsAreLoaded(true)
     }
-  }, [fetchTokenMutableData, appData])
+  }, [fetchTokenMutableData])
 
   //  Check if token data exists in the cache and add it to the tokens object.
   const reviewNftCachedData = useCallback(async (offers) => {

src/components/app-body/nfts-for-sale/info-button.js

@@ -98,17 +98,16 @@ function InfoButton (props) {
             </Row>
 
             {mutableDataCid && (
-              <Row>
+              <Row style={{ paddingTop: '10px' }}>
                 <Col xs={4}><b>User Data</b>:</Col>
                 <Col xs={8}>
-                  <a
-                    href={`/user-data/${props.token.tokenId}`}
+                  <Button
+                    href={`/user-data/${props.token.tokenId}#single-view`}
                     target='_blank'
                     rel='noopener noreferrer'
-                    className='btn btn-link p-0'
                   >
                     View User Data
-                  </a>
+                  </Button>
                 </Col>
               </Row>
             )}

src/components/app-body/nfts-for-sale/token-card.js

@@ -12,7 +12,7 @@ import InfoButton from './info-button'
 import BuyButton from './buy-button'
 
 function TokenCard (props) {
-  const { token, appData, handleRefresh } = props
+  const { token, appData, handleRefresh, hideBuyBtn } = props
   const [icon, setIcon] = useState(token.icon)
   const [tokenData, setTokenData] = useState(token.tokenData)
 
@@ -64,16 +64,16 @@ function TokenCard (props) {
               </Row>
               <br />
 
-              <Row>
+              <Row className='text-center'>
                 <Col>
                   <InfoButton token={token} disabled={!token.tokenData} />
                 </Col>
 
-                <Col />
-
-                <Col>
-                  <BuyButton token={token} disabled={!token.tokenData} appData={appData} onSuccess={handleRefresh} />
-                </Col>
+                {!hideBuyBtn && (
+                  <Col>
+                    <BuyButton token={token} disabled={!token.tokenData} appData={appData} onSuccess={handleRefresh} />
+                  </Col>
+                )}
               </Row>
 
             </Container>
@@ -83,17 +83,5 @@ function TokenCard (props) {
     </>
   )
 }
-// eslint-disable-next-line
-{/* <Col>
-                  <InfoButton token={props.token} />
-                </Col>
-
-                <Col>
-                  <FlagButton appData={props.appData} offer={props.token} />
-                </Col>
-
-                <Col>
-                  <BuyNftButton appData={props.appData} offer={props.token} />
-                </Col> */ }
 
 export default TokenCard

src/components/app-body/nostr/content-creators/content-creators-list.js

@@ -1,13 +1,24 @@
+/*
+  This component is used to display the list of content creators.
+
+  TODO:
+  - getFollowList() should aggregate all the followers from all the relays.
+    Currently each relay overwrites the last one.
+
+  - loadProfile() should use multiple relays. It should exit after the first
+    successful retrieval of data from a relay. If the relay fails to give data,
+    it should move on to the next relay.
+*/
+
 import React, { useState, useEffect, useCallback } from 'react'
 import { Container, Spinner, Dropdown } from 'react-bootstrap'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 import { faFilter } from '@fortawesome/free-solid-svg-icons'
-
 import axios from 'axios'
+
 // Local libraries
 import config from '../../../../config'
 import ContentCard from './content-card'
-import { RelayPool } from 'nostr'
 
 // Global variables and constants
 const SERVER = config.dexServer
@@ -19,64 +30,16 @@ function ContentCreators (props) {
 
   const [followList, setFollowList] = useState([])
 
+  // Get the list of profiles followed by the user.
+  // It aggregates all the followers from all the relays.
   const getFollowList = useCallback(async () => {
-    const list = await new Promise((resolve, reject) => {
-      let list = []
-      const { nostrKeyPair } = appData.bchWalletState
-      const psf = 'wss://nostr-relay.psfoundation.info'
+    const { nostrKeyPair } = appData.bchWalletState
 
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('subid', { limit: 1, kinds: [3], authors: [nostrKeyPair.pubHex] })
-      })
-
-      pool.on('eose', relay => {
-        console.log('Closing Relay')
-        relay.close()
-        /** This ensures to return an empty array if no records are found!
-         *  Applies for new users that don't have a follow list
-        */
-        resolve(list)
-      })
-
-      pool.on('event', (relay, subId, ev) => {
-        console.log('Received event:', ev)
-        list = ev.tags
-        resolve(list)
-      })
-    })
-
-    console.log('Follow List', list)
+    const pubKeyHex = nostrKeyPair.pubHex
+    const list = await appData.nostrQueries.getFollowList(pubKeyHex)
     setFollowList(list)
   }, [appData])
 
-  const loadProfile = useCallback(async (pubKey) => {
-    return new Promise((resolve) => {
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('subid', { limit: 5, kinds: [0], authors: [pubKey] })
-      })
-
-      pool.on('eose', relay => {
-        console.log('Closing Relay')
-        relay.close()
-        resolve(false)
-      })
-
-      pool.on('event', (relay, subId, ev) => {
-        try {
-          const profile = JSON.parse(ev.content)
-          // console.log('profile', profile)
-          resolve(profile)
-        } catch (error) {
-          resolve(false)
-        }
-      })
-    })
-  }, [])
-
   useEffect(() => {
     const loadCreators = async () => {
       try {
@@ -89,7 +52,7 @@ function ContentCreators (props) {
         for (let i = 0; i < creators.length; i++) {
           try {
             const creator = creators[i]
-            const profile = await loadProfile(creator.pubkey)
+            const profile = await appData.nostrQueries.getProfile(creator.pubkey)
 
             // the folowing lines should re-render the ContentCard
             setCreators(prevCreators => {
@@ -110,7 +73,7 @@ function ContentCreators (props) {
       loadCreators()
       getFollowList()
     }
-  }, [loaded, followList, getFollowList, loadProfile])
+  }, [loaded, followList, getFollowList, appData])
 
   const filteredCreators = useCallback(() => {
     if (!creators || creators.length === 0) {

src/components/app-body/nostr/feeds/feed-card.js

@@ -1,6 +1,7 @@
 /**
  * Component for displaying nostr posts
  */
+
 // Global npm libraries
 import React, { useCallback, useEffect, useState } from 'react'
 import { Card, Spinner } from 'react-bootstrap'
@@ -8,11 +9,14 @@ import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 import { faUser, faHeart as faHeartSolid } from '@fortawesome/free-solid-svg-icons'
 import { faHeart } from '@fortawesome/free-regular-svg-icons'
 import * as nip19 from 'nostr-tools/nip19'
-import NostrFormat from '../nostr-format'
 import { finalizeEvent } from 'nostr-tools/pure'
 import { Relay } from 'nostr-tools/relay'
 import { hexToBytes } from '@noble/hashes/utils' // already an installed dependency
-import { RelayPool } from 'nostr'
+import config from '../../../../config/index.js'
+
+// Local libraries
+import CopyOnClick from '../../bch-wallet/copy-on-click.js'
+import NostrFormat from '../nostr-format'
 
 function FeedCard (props) {
   const { post, appData, profiles } = props
@@ -21,61 +25,36 @@ function FeedCard (props) {
   const [profile, setProfile] = useState(profiles[post.pubkey])
 
   const [npub, setNpub] = useState('')
-  const [isClicked, setIsClicked] = useState(false)
   const [isLiked, setIsLiked] = useState(false)
   const [likesCount, setLikesCount] = useState(null)
   const [likesFetched, setLikesFetched] = useState(false)
+  const [profilePictureError, setProfilePictureError] = useState(false)
 
   // function to fetch a post likes reaction
   const handleLikes = useCallback(async (post, userPubKey) => {
     try {
-      const psf = 'wss://nostr-relay.psfoundation.info'
-      const res = await new Promise((resolve) => {
-        let likesCnt = 0
-        let userLikedCnt = 0
-        const pool = RelayPool([psf])
-        pool.on('open', relay => {
-          relay.subscribe('subid', { kinds: [7], '#e': [post.id] })
-        })
+      // Get all post likes events
+      const likesArr = await appData.nostrQueries.getPostLikes(post.id)
+      const likesCount = likesArr.length
 
-        pool.on('eose', relay => {
-          relay.close()
-          resolve({
-            count: likesCnt,
-            userLiked: userLikedCnt > 0
-          })
-        })
-
-        pool.on('event', (relay, subId, ev) => {
-          try {
-            // Count likes
-            if (ev.content === '+') {
-              likesCnt++
-              // Count user likes
-              if (ev.pubkey === userPubKey) {
-                userLikedCnt++
-              }
-            }
-            // Count dislikes
-            if (ev.content === '-') {
-              likesCnt--
-              // Count user dislikes.
-              if (ev.pubkey === userPubKey) {
-                userLikedCnt--
-              }
-            }
-          } catch (error) {
-            // skip error
-          }
-        })
-      })
-      setLikesCount(res.count)
-      setIsLiked(res.userLiked)
+      // Verify if the users pubkey is in the likes array
+      const userLikedPost = likesArr.find(val => { return val.pubkey === userPubKey })
+      setLikesCount(likesCount)
+      setIsLiked(userLikedPost)
       setLikesFetched(true)
     } catch (error) {
       console.warn(error)
     }
-  }, [])
+  }, [appData])
+
+  const handleProfilePictureError = () => {
+    setProfilePictureError(true)
+  }
+
+  const handleProfilePictureLoad = () => {
+    setProfilePictureError(false)
+  }
+
   // Get npub from pubkey
   useEffect(() => {
     const npub = nip19.npubEncode(post.pubkey)
@@ -94,13 +73,6 @@ function FeedCard (props) {
     }
   }, [profiles, post])
 
-  // copy to clipboard
-  const copyToClipboard = useCallback((value) => {
-    setIsClicked(true)
-    appData.appUtil.copyToClipboard(value)
-    setTimeout(() => setIsClicked(false), 200)
-  }, [appData])
-
   // get short npub
   const getShortNpub = useCallback((npub) => {
     return npub.slice(0, 8) + '...' + npub.slice(-5)
@@ -116,9 +88,6 @@ function FeedCard (props) {
       // Convert private key to binary
       const privateKeyBin = hexToBytes(nostrKeyPair.privHex)
 
-      // Relay list
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
       // Define if like or dislike
       let content = '+'
       if (isLiked) { content = '-' }
@@ -128,27 +97,32 @@ function FeedCard (props) {
         kind: 7,
         created_at: Math.floor(Date.now() / 1000),
         tags: [
-          ['e', post.id, psf],
-          ['p', psf, nostrKeyPair.pubHex]
+          ['e', post.id],
+          ['p', nostrKeyPair.pubHex]
         ],
         content
       }
       console.log(`eventTemplate: ${JSON.stringify(eventTemplate, null, 2)}`)
 
-      // Sign the post
-      const signedEvent = finalizeEvent(eventTemplate, privateKeyBin)
-      console.log('signedEvent: ', signedEvent)
+      config.nostrRelays.map(async (relayUrl) => {
+        try {
+          // Sign the post
+          const signedEvent = finalizeEvent(eventTemplate, privateKeyBin)
+          console.log('signedEvent: ', signedEvent)
+          // Connect to a relay.
+          const relay = await Relay.connect(relayUrl)
+          console.log(`connected to ${relay.url}`)
 
-      // Connect to a relay.
-      const relay = await Relay.connect(psf)
-      console.log(`connected to ${relay.url}`)
+          // Publish the message to the relay.
+          const result = await relay.publish(signedEvent)
+          console.log('result: ', result)
 
-      // Publish the message to the relay.
-      const result = await relay.publish(signedEvent)
-      console.log('result: ', result)
-
-      // Close the connection to the relay.
-      relay.close()
+          // Close the connection to the relay.
+          relay.close()
+        } catch (err) {
+          console.warn(`Skipping publishing to ${relayUrl} due to error: ${err}`)
+        }
+      })
 
       await handleLikes(post, nostrKeyPair.pubHex)
       setLikesFetched(true)
@@ -158,6 +132,11 @@ function FeedCard (props) {
     }
   }
 
+  const goToProfile = () => {
+    const profileUrl = `${window.location.origin}/profile/${npub}#single-view`
+    window.open(profileUrl, '_blank')
+  }
+
   return (
     <Card className='mb-4 bg-light rounded-4 shadow-sm border-0'>
       <Card.Body className='p-3'>
@@ -170,13 +149,27 @@ function FeedCard (props) {
               background: 'linear-gradient(45deg, #6c757d, #495057)'
             }}
           >
-            <FontAwesomeIcon icon={faUser} size='1x' color='#7c7c7d' />
+            {profile?.picture && !profilePictureError
+              ? (
+                <img
+                  src={profile.picture}
+                  alt='Profile'
+                  className='rounded-circle w-100 h-100'
+                  style={{ objectFit: 'cover', cursor: 'pointer' }}
+                  onError={handleProfilePictureError}
+                  onLoad={handleProfilePictureLoad}
+                  onClick={goToProfile}
+                />
+                )
+              : (
+                <FontAwesomeIcon icon={faUser} size='1x' color='#7c7c7d' style={{ cursor: 'pointer' }} onClick={goToProfile} />
+                )}
           </div>
           <div className='flex-grow-1'>
             <div className='fw-bold mb-1'>
-              {profile && profile.name && <span>{profile.name}</span>}
+              {profile && profile.name && <span style={{ cursor: 'pointer' }} onClick={goToProfile}>{profile.name}</span>}
               {!profile?.name && (
-                <span>
+                <span style={{ cursor: 'pointer' }} onClick={goToProfile}>
                   {post.pubkey.slice(0, 8) + '...'}
                   {!profile?.loaded && <Spinner animation='border' size='sm' className='ms-2' />}
                 </span>
@@ -188,14 +181,20 @@ function FeedCard (props) {
                   title='Copy to clipboard'
                   style={{
                     cursor: 'pointer',
-                    transform: isClicked ? 'scale(0.95)' : 'scale(1)',
                     transition: 'transform 0.1s ease',
-                    display: 'inline-block'
+                    display: 'inline-block',
+                    marginRight: '5px'
                   }}
-                  onClick={() => copyToClipboard(npub)}
+                  onClick={goToProfile}
+
                 >
                   {getShortNpub(npub)}
                 </span>
+                <CopyOnClick
+                  walletProp='npub'
+                  appData={props.appData}
+                  value={npub}
+                />
               </small>
             )}
           </div>

src/components/app-body/nostr/feeds/following.js

@@ -4,9 +4,10 @@
 // Global npm libraries
 import React, { useEffect, useState } from 'react'
 import { Container, Spinner } from 'react-bootstrap'
-
 import { RelayPool } from 'nostr'
 
+// Local libraries
+import config from '../../../../config'
 import FeedCard from './feed-card'
 
 function Following (props) {
@@ -19,9 +20,8 @@ function Following (props) {
       const followingList = await new Promise((resolve, reject) => {
         let list = []
         const { nostrKeyPair } = appData.bchWalletState
-        const psf = 'wss://nostr-relay.psfoundation.info'
 
-        const pool = RelayPool([psf])
+        const pool = RelayPool(config.nostrRelays)
         pool.on('open', relay => {
           relay.subscribe('subid', { limit: 1, kinds: [3], authors: [nostrKeyPair.pubHex] })
         })

src/components/app-body/nostr/feeds/index.js

@@ -1,98 +1,54 @@
 /*
-Component for reading the nostr feeds.
+  Component for reading the nostr feeds.
 */
 
 // Global npm libraries
-import React, { useState, useEffect, useCallback } from 'react'
+import React, { useState, useEffect } from 'react'
 import { Container, Nav, Tab, Spinner } from 'react-bootstrap'
+
+// Local libraries
 import Feed from './feed'
 import Following from './following'
-import { RelayPool } from 'nostr'
 
 function Feeds (props) {
   const { appData } = props
   const [activeTab, setActiveTab] = useState(appData.lastFeedTab)
 
-  const { bchWalletState } = appData
   const [posts, setPosts] = useState([])
   const [loaded, setLoaded] = useState(false)
   const [profiles, setProfiles] = useState({})
 
-  // function to fetch profile and set it to profiles state
-  const fetchProfile = useCallback((pubkey) => {
-    // no fetch profile again if it exist
-    setProfiles(currentProfiles => {
-      if (currentProfiles[pubkey]) {
-        return currentProfiles
-      }
-      return currentProfiles
-    })
+  // Load data on component mount.
+  useEffect(() => {
+    const loadData = async () => {
+      // Get feeds
+      const feeds = await appData.nostrQueries.getGlobalFeeds()
+      setPosts(feeds)
+      setLoaded(true)
 
-    const psf = 'wss://nostr-relay.psfoundation.info'
+      const loadedProfiles = [] // fetched profiles ( this will be used for prevent load the same profile multiple times.)
+      // Map feeds and get feed owner profile.
+      for (let i = 0; i < feeds.length; i++) {
+        const pubKey = feeds[i].pubkey
 
-    const pool = RelayPool([psf])
-    pool.on('open', relay => {
-      relay.subscribe('subid', { limit: 5, kinds: [0], authors: [pubkey] })
-    })
+        const exist = loadedProfiles.find((val) => { return val === pubKey })
+        if (exist) { continue }
+        // Fech profile.
+        const profile = await appData.nostrQueries.getProfile(pubKey)
+        loadedProfiles.push(pubKey) // mark as loaded
 
-    pool.on('eose', relay => {
-      relay.close()
-      try {
-      // Mark unknown profiles. From this way we can know which profile was fetched and not found.
-        setProfiles(currentProfiles => {
-          if (!currentProfiles[pubkey]) {
-            const newProfiles = { ...currentProfiles }
-            newProfiles[pubkey] = { loaded: true }
-            return newProfiles
-          }
-          return currentProfiles
-        })
-      } catch (error) {
-        // skip error
-      }
-    })
-
-    pool.on('event', (relay, subId, ev) => {
-      try {
-        // update profiles data
-        const profile = JSON.parse(ev.content)
+        // Update profile state
         setProfiles(currentProfiles => {
           const newProfiles = { ...currentProfiles }
-          newProfiles[pubkey] = profile
+          newProfiles[pubKey] = profile
           return newProfiles
         })
-      } catch (error) {
-        // skip error
       }
-    })
-  }, [])
-
-  // Get global feed posts
-  useEffect(() => {
-    const start = () => {
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('REQ', { limit: 10, kinds: [1], '#t': ['slpdex-socialmedia'] })
-      })
-
-      pool.on('eose', relay => {
-        setLoaded(true)
-        relay.close()
-      })
-
-      pool.on('event', async (relay, subId, ev) => {
-        setPosts(currentPosts => [...currentPosts, ev])
-        // fetch post profile and set it to profiles state
-        fetchProfile(ev.pubkey)
-      })
     }
-
     if (!loaded) {
-      start()
+      loadData()
     }
-  }, [bchWalletState, loaded, fetchProfile])
+  }, [loaded, appData])
 
   const onChangeTab = (tab) => {
     setActiveTab(tab)

src/components/app-body/nostr/nostr-format.js

@@ -26,7 +26,7 @@ const NostrFormat = ({ content }) => {
   }
 
   return (
-    <div dangerouslySetInnerHTML={{ __html: formatContent(content) }} />
+    <div style={{ overflow: 'auto' }} dangerouslySetInnerHTML={{ __html: formatContent(content) }} />
   )
 }
 

src/components/app-body/nostr/nostr-post/index.js.js

@@ -1,10 +1,12 @@
 /*
-Component for posting nostr information.
+  Component for posting nostr information.
 */
 
 // Global npm libraries
 import React from 'react'
 import { Container } from 'react-bootstrap'
+
+// Local libraries
 import ProfilePost from './profile-post'
 import PublicPost from './public-post'
 

src/components/app-body/nostr/nostr-post/profile-post.js

@@ -9,10 +9,13 @@ import Accordion from 'react-bootstrap/Accordion'
 import { finalizeEvent } from 'nostr-tools/pure'
 import { Relay } from 'nostr-tools/relay'
 import { hexToBytes } from '@noble/hashes/utils' // already an installed dependency
-import { RelayPool } from 'nostr'
+
+// Local libraries
+import config from '../../../../config'
 
 function ProfilePost (props) {
-  const { bchWalletState } = props.appData
+  const { appData } = props
+  const { bchWalletState } = appData
   const [accordionKey, setAccordionKey] = useState(null)
   const [onFetch, setOnFetch] = useState(false)
   const [formLoaded, setFormLoaded] = useState(false)
@@ -31,40 +34,19 @@ function ProfilePost (props) {
 
   useEffect(() => {
     // Get Last post from
-    const getLastPost = () => {
-      const { nostrKeyPair } = bchWalletState
-
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('subid', { limit: 1, kinds: [0], authors: [nostrKeyPair.pubHex] })
-        setFormLoaded(true)
-      })
-
-      pool.on('eose', relay => {
-        console.log('Closing Relay')
-        setFormLoaded(true)
-        relay.close()
-      })
-
-      pool.on('event', (relay, subId, ev) => {
-        console.log('Received event:', ev)
-        // setPosts(currentPosts => [...currentPosts, ev])
-        try {
-          const data = JSON.parse(ev.content)
-          console.log('data', data)
-          setFormData(data)
-        } catch (error) {
-
-        }
-      })
+    const getLastProfilePost = async () => {
+      const { nostrKeyPair } = appData.bchWalletState
+      const lastProfile = await appData.nostrQueries.getProfile(nostrKeyPair.pubHex)
+      if (lastProfile) {
+        setFormData(lastProfile)
+      }
+      setFormLoaded(true)
     }
 
     if (!formLoaded) {
-      getLastPost()
+      getLastProfilePost()
     }
-  }, [bchWalletState, formLoaded])
+  }, [appData, formLoaded])
 
   const handleInputChange = (e) => {
     const { name, value } = e.target
@@ -90,7 +72,7 @@ function ProfilePost (props) {
       const privateKeyBin = hexToBytes(nostrKeyPair.privHex)
 
       // Relay list
-      const psf = 'wss://nostr-relay.psfoundation.info'
+      // const psf = 'wss://nostr-relay.psfoundation.info'
 
       const formDataString = JSON.stringify(formData)
 
@@ -107,16 +89,24 @@ function ProfilePost (props) {
       const signedEvent = finalizeEvent(eventTemplate, privateKeyBin)
       console.log('signedEvent: ', signedEvent)
 
-      // Connect to a relay.
-      const relay = await Relay.connect(psf)
-      console.log(`connected to ${relay.url}`)
+      // Publish the post to each relay.
+      config.nostrRelays.map(async (relayUrl) => {
+        try {
+          // Connect to a relay.
+          const relay = await Relay.connect(relayUrl)
+          console.log(`connected to ${relay.url}`)
 
-      // Publish the message to the relay.
-      const result = await relay.publish(signedEvent)
-      console.log('result: ', result)
+          // Publish the message to the relay.
+          const result = await relay.publish(signedEvent)
+          console.log('result: ', result)
+
+          // Close the connection to the relay.
+          relay.close()
+        } catch (err) {
+          console.warn(`Skipping publishing to ${relayUrl} due to error: ${err}`)
+        }
+      })
 
-      // Close the connection to the relay.
-      relay.close()
       setSuccessMsg('Post successfully published!')
       setOnFetch(false)
     } catch (error) {

src/components/app-body/nostr/nostr-post/public-post.js

@@ -1,5 +1,5 @@
 /*
-Component for posting nostr information on kind 1.
+  Component for posting nostr information on kind 1.
 */
 
 // Global npm libraries
@@ -10,8 +10,11 @@ import { finalizeEvent } from 'nostr-tools/pure'
 import { Relay } from 'nostr-tools/relay'
 import { hexToBytes } from '@noble/hashes/utils' // already an installed dependency
 
+// Local libraries
+import config from '../../../../config'
+
 function PublicPost (props) {
-  const [accordionKey, setAccordionKey] = useState(null)
+  const [accordionKey, setAccordionKey] = useState('0')
   const [onFetch, setOnFetch] = useState(false)
   const { bchWalletState } = props.appData
   const [formData, setFormData] = useState({
@@ -44,9 +47,6 @@ function PublicPost (props) {
       // Convert private key to binary
       const privateKeyBin = hexToBytes(nostrKeyPair.privHex)
 
-      // Relay list
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
       // BCH address of the user.
       const bchAddr = bchWalletState.address
 
@@ -63,16 +63,24 @@ function PublicPost (props) {
       const signedEvent = finalizeEvent(eventTemplate, privateKeyBin)
       console.log('signedEvent: ', signedEvent)
 
-      // Connect to a relay.
-      const relay = await Relay.connect(psf)
-      console.log(`connected to ${relay.url}`)
+      // Publish the post to each relay.
+      config.nostrRelays.map(async (relayUrl) => {
+        try {
+          // Connect to a relay.
+          const relay = await Relay.connect(relayUrl)
+          console.log(`connected to ${relay.url}`)
 
-      // Publish the message to the relay.
-      const result = await relay.publish(signedEvent)
-      console.log('result: ', result)
+          // Publish the message to the relay.
+          const result = await relay.publish(signedEvent)
+          console.log('result: ', result)
+
+          // Close the connection to the relay.
+          relay.close()
+        } catch (err) {
+          console.warn(`Skipping publishing to ${relayUrl} due to error: ${err}`)
+        }
+      })
 
-      // Close the connection to the relay.
-      relay.close()
       resetForm()
       setSuccessMsg('Post successfully published!')
       setOnFetch(false)

src/components/app-body/nostr/profile/index.js

@@ -9,7 +9,7 @@ import ProfileRead from './profile-read.js'
 import PublicRead from './public-read.js'
 import { useParams } from 'react-router-dom'
 import SlpTokensDisplay from './slp-tokens-display'
-
+import NFTForSale from './nft-for-sale.js'
 function Profile (props) {
   const [profile, setProfile] = useState(false)
   const { npub } = useParams()
@@ -17,9 +17,10 @@ function Profile (props) {
   return (
     <>
       <Container>
-        <ProfileRead {...props} setProfile={setProfile} npub={npub} />
+        <ProfileRead {...props} onProfileRead={setProfile} npub={npub} />
         <PublicRead {...props} profile={profile} npub={npub} />
         <SlpTokensDisplay {...props} npub={npub} />
+        <NFTForSale {...props} npub={npub} />
       </Container>
     </>
   )

src/components/app-body/nostr/profile/nft-for-sale.js

@@ -0,0 +1,327 @@
+/**
+ * Component for displaying SLP tokens in a grid layout
+ */
+import React, { useState, useEffect, useCallback } from 'react'
+import { Container, Row, Col, Spinner } from 'react-bootstrap'
+import config from '../../../../config'
+import axios from 'axios'
+import TokenCard from '../../nfts-for-sale/token-card'
+
+function NFTForSale (props) {
+  const { appData, npub } = props
+
+  const [offers, setOffers] = useState([])
+  const [offersAreLoaded, setOffersAreLoaded] = useState(false)
+  const [iconsAreLoaded, setIconsAreLoaded] = useState(false)
+  const [dataAreLoaded, setDataAreLoaded] = useState(false)
+  const [startAsync, setStartAsync] = useState(false)
+
+  const getAddressByNpub = useCallback(async () => {
+    const url = `${config.dexServer}/sm/npub/${npub}`
+    const response = await axios.get(url)
+    const addr = response.data.bchAddr
+    return addr
+  }, [npub])
+
+  // Handler for refresh button
+  const handleRefresh = () => {
+    console.log('handle refresh')
+    loadNftOffers()
+  }
+
+  // Function to process token data
+  const processTokenData = useCallback(async (offer) => {
+    try {
+      const { wallet, bchWalletState } = appData
+      const { bchjs } = wallet
+
+      // Calculate USD price
+      const rateInSats = parseInt(offer.rateInBaseUnit)
+      const bchCost = bchjs.BitcoinCash.toBitcoinCash(rateInSats)
+      const usdPrice = bchCost * bchWalletState.bchUsdPrice * offer.numTokens
+      offer.usdPrice = `$${usdPrice.toFixed(3)}`
+
+      return offer
+    } catch (err) {
+      console.error('Error processing token:', err)
+      return offer
+    }
+  }, [appData])
+
+  //  Fetch offers
+  const getNftOffers = useCallback(async (page = 0) => {
+    try {
+      setOffersAreLoaded(false)
+      const addr = await getAddressByNpub(npub)
+      const url = `${config.dexServer}/offer/list/addr/${addr}`
+      const result = await axios.get(url)
+      const rawOffers = result.data
+      console.log('rawOffers: ', rawOffers)
+
+      // Process each offer
+      const processedOffers = []
+      for (let i = 0; i < rawOffers.length; i++) {
+        const offer = rawOffers[i]
+        const processedOffer = await processTokenData(offer)
+        processedOffers.push(processedOffer)
+      }
+
+      setOffersAreLoaded(true)
+
+      return processedOffers
+    } catch (err) {
+      console.error('getNftOffers error:', err)
+      setOffersAreLoaded(true)
+      throw err
+    }
+  }, [processTokenData, getAddressByNpub, npub])
+
+  //  This function loads the token data .
+  const lazyLoadTokenData = useCallback(async (tokens) => {
+    try {
+      setDataAreLoaded(false)
+      // map each token and fetch the token data
+      for (let i = 0; i < tokens.length; i++) {
+        const thisToken = tokens[i]
+
+        // data does not  need to be downloaded, so continue with the next one
+        if (thisToken.dataAlreadyDownloaded) continue
+
+        // Try to get token data.
+        const tokenData = await appData.wallet.getTokenData(thisToken.tokenId)
+        console.log('tokenData', tokenData)
+        if (tokenData) {
+          // Set data to the token object , this can be used to display the token name in the token card component.
+          thisToken.tokenData = tokenData
+        }
+
+        // Mark token to prevent fetch token data again.
+        thisToken.dataAlreadyDownloaded = true
+      }
+
+      setDataAreLoaded(true)
+    } catch (error) {
+      setDataAreLoaded(true)
+    }
+  }, [appData])
+
+  // Fetch mutable data if it exist and get the token icon url
+  const fetchTokenMutableData = useCallback(async (token) => {
+    try {
+      // Get the token data
+      const tokenData = token.tokenData
+
+      if (!tokenData.mutableData) return false // Return false if no mutable data
+
+      // Get the token icon from the mutable data
+      const cid = parseCid(tokenData.mutableData)
+      console.log('mutable data cid', cid)
+
+      const { json } = await appData.wallet.cid2json({ cid })
+      console.log('json: ', json)
+      if (!json) return false
+
+      let iconUrl = json.tokenIcon
+
+      if (json.fullSizedUrl && json.fullSizedUrl.includes('http')) {
+        iconUrl = json.fullSizedUrl
+      }
+      const userData = json.userData
+      // Return icon url
+      return { iconUrl, userData }
+    } catch (error) {
+      return false
+    }
+  }, [appData])
+
+  //  This function loads the token icons from the ipfs gateways.
+  const lazyLoadMutableData = useCallback(async (tokens) => {
+    try {
+      setIconsAreLoaded(false)
+      // map each token and fetch the icon url
+      for (let i = 0; i < tokens.length; i++) {
+        const thisToken = tokens[i]
+
+        // Incon does not  need to be downloaded, so continue with the next one
+        if (thisToken.iconAlreadyDownloaded) continue
+
+        // Try to get token icon url from mutable data.
+        const { iconUrl, userData } = await fetchTokenMutableData(thisToken)
+        console.log('iconUrl', iconUrl)
+        if (iconUrl) {
+          // Set the icon url to the token , this can be used to display the icon in the token card component.
+          thisToken.icon = iconUrl
+          thisToken.tokenData.userData = userData
+        }
+
+        // Mark token to prevent fetch token icon again.
+        thisToken.iconAlreadyDownloaded = true
+      }
+
+      setIconsAreLoaded(true)
+    } catch (error) {
+      setIconsAreLoaded(true)
+    }
+  }, [fetchTokenMutableData])
+
+  //  Check if token data exists in the cache and add it to the tokens object.
+  const reviewNftCachedData = useCallback(async (offers) => {
+    const cacheData = appData.nftForSaleCacheData
+    console.log(`Token data from cache: ${JSON.stringify(cacheData, null, 2)}`)
+    // Map all offers
+    for (let i = 0; i < offers.length; i++) {
+      const thisToken = offers[i]
+      const cacheToken = cacheData[thisToken.tokenId]
+      // If cache data exists, add it to the token object
+      if (cacheToken) {
+        thisToken.tokenData = cacheToken.tokenData
+        thisToken.icon = cacheToken.tokenIcon
+      }
+    }
+  }, [appData])
+
+  //  Check if token data exists in the cache and add it to the tokens object.
+  const updateNFTCachedData = useCallback(async (offers) => {
+    // Map all offers
+    for (let i = 0; i < offers.length; i++) {
+      const thisToken = offers[i]
+      // save token icon and token data in cache
+      const newTokenCacheData = {
+        tokenIcon: thisToken.icon,
+        tokenData: thisToken.tokenData
+      }
+
+      console.log('newTokenCacheData: ', newTokenCacheData)
+      appData.updateNFTCachedData(thisToken.tokenId, newTokenCacheData)
+    }
+  }, [appData])
+
+  // Main function to load NFT offers
+  const loadNftOffers = useCallback(async () => {
+    try {
+      // Get tokens in offers
+      const offers = await getNftOffers()
+      console.log('offers: ', offers)
+      // Review cached data to populate token data from cached data
+      await reviewNftCachedData(offers)
+      // set state to start displaying tokens cards.
+      setOffers(offers)
+      // Load tokens data for any updates to the token data
+      await lazyLoadTokenData(offers)
+      // Load tokens icons from mutable data
+      await lazyLoadMutableData(offers)
+
+      //  Update cached data with the latest retrieved data
+      await updateNFTCachedData(offers)
+    } catch (err) {
+      console.error('Error loading NFT offers:', err)
+    }
+  }, [lazyLoadTokenData, lazyLoadMutableData, getNftOffers, reviewNftCachedData, updateNFTCachedData])
+
+  // Effect to load NFTs on component mount
+  useEffect(() => {
+    // Prevent to load data twice
+    if (!startAsync) {
+      console.log('loading nfts for sale')
+      loadNftOffers()
+      setStartAsync(true)
+    }
+  }, [loadNftOffers, startAsync])
+
+  // Get Cid from url
+  const parseCid = (url) => {
+    // get the cid from the url format 'ipfs://bafybeicem27xbzs65uvbcgykcmscsgln3lmhbfrcoec3gdttkdgtxv5acq
+    if (url && url.includes('ipfs://')) {
+      const cid = url.split('ipfs://')[1]
+      return cid
+    }
+    return url
+  }
+
+  // This function generates a Token Card for each token in the wallet.
+  function generateCards (offers) {
+    console.log('generateCards() offerData: ', offers)
+
+    const tokens = offers
+
+    const tokenCards = []
+
+    for (let i = 0; i < tokens.length; i++) {
+      const thisToken = tokens[i]
+
+      const thisTokenCard = (
+        <TokenCard
+          appData={appData}
+          token={thisToken}
+          handleRefresh={handleRefresh}
+          key={`${thisToken.tokenId + i}`}
+          hideBuyBtn
+          hideSendBtn
+        />
+      )
+      tokenCards.push(thisTokenCard)
+    }
+
+    return tokenCards
+  }
+
+  return (
+    <Container>
+      {!offersAreLoaded && (
+        <div className='d-flex justify-content-center align-items-center h-100 mb-4'>
+          <Spinner />
+        </div>
+      )}
+      {offersAreLoaded && offers.length !== 0 && (
+        <div className='bg-white rounded-1 shadow-sm border mb-4'>
+          <div className='p-3 border-bottom bg-light rounded-top-4'>
+            <h5 className='mb-0 fw-bold text-dark'>Tokens For Sale</h5>
+          </div>
+          <div
+            className='p-3'
+            style={{
+              height: '800px',
+              overflowY: 'auto',
+              maxHeight: '800px'
+            }}
+          >
+
+            <Row>
+              <Col xs={12} style={{ display: 'flex', justifyContent: 'center', alignItems: 'center' }}>
+                {/** Show spinner info if tokens are loaded but data is not loaded */
+                  offersAreLoaded && !dataAreLoaded && (
+                    <div style={{ borderRadius: '10px', backgroundColor: '#f0f0f0', padding: '10px', display: 'flex', justifyContent: 'center', alignItems: 'center', width: 'fit-content' }}>
+                      <span style={{ marginRight: '10px' }}>Loading Token Data </span>
+                      <Spinner animation='border' />
+                    </div>
+                  )
+                }
+                {/** Show spinner info if tokens are loaded but icons are not loaded */
+                  dataAreLoaded && !iconsAreLoaded && (
+                    <div style={{ borderRadius: '10px', backgroundColor: '#f0f0f0', padding: '10px', display: 'flex', justifyContent: 'center', alignItems: 'center', width: 'fit-content' }}>
+                      <span style={{ marginRight: '10px' }}>Loading Token Icons </span>
+                      <Spinner animation='border' />
+                    </div>
+                  )
+                }
+
+              </Col>
+            </Row>
+
+            {!offersAreLoaded && (
+              <Row className='d-block text-center'>
+                <Spinner animation='border' variant='primary' style={{ maegin: '0 auto' }} />
+              </Row>
+            )}
+            <Row>
+              {offersAreLoaded && generateCards(offers)}
+            </Row>
+
+          </div>
+        </div>
+      )}
+    </Container>
+  )
+}
+
+export default NFTForSale

src/components/app-body/nostr/profile/profile-read.js

@@ -1,51 +1,36 @@
 /**
- * Component for read nostr information kind 0
+ * Component to read nostr information kind 0 (normal posts)
+ *
  */
+
 // Global npm libraries
 import React, { useEffect, useState } from 'react'
 import { Container, Button } from 'react-bootstrap'
 import CopyOnClick from '../../bch-wallet/copy-on-click.js'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 import { faUser, faGlobe } from '@fortawesome/free-solid-svg-icons'
-import NostrFormat from '../nostr-format'
-import { RelayPool } from 'nostr'
 import * as nip19 from 'nostr-tools/nip19'
 
+// Local libraries
+import NostrFormat from '../nostr-format'
+
 function ProfileRead (props) {
-  const { npub } = props
-  const { setProfile } = props
-  const [post, setPost] = useState({})
+  const { npub, appData } = props
+  const { onProfileRead } = props
+  const [profile, setProfile] = useState({})
   const [loaded, setLoaded] = useState(false)
   const [imageError, setImageError] = useState({ picture: false, banner: false })
 
   useEffect(() => {
-    const start = () => {
+    const start = async () => {
       const pubHexData = nip19.decode(npub)
       const pubHex = pubHexData.data
-      const psf = 'wss://nostr-relay.psfoundation.info'
 
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('subid', { limit: 5, kinds: [0], authors: [pubHex] })
-        setLoaded(true)
-      })
-
-      pool.on('eose', relay => {
-        console.log('Closing Relay')
-        relay.close()
-      })
-
-      pool.on('event', (relay, subId, ev) => {
-        console.log('Received event:', ev)
-        try {
-          const profile = JSON.parse(ev.content)
-          console.log('Profile:', profile)
-          setPost(profile)
-          setProfile(profile)
-        } catch (error) {
-          console.error('Error parsing profile:', error)
-        }
-      })
+      const profile = await appData.nostrQueries.getProfile(pubHex)
+      if (profile) {
+        onProfileRead(profile)
+        setProfile(profile)
+      }
 
       setLoaded(true)
     }
@@ -53,7 +38,7 @@ function ProfileRead (props) {
     if (!loaded && npub) {
       start()
     }
-  }, [loaded, setProfile, npub])
+  }, [loaded, onProfileRead, npub, appData])
 
   const handleImageError = (type) => {
     setImageError(prev => ({ ...prev, [type]: true }))
@@ -66,10 +51,10 @@ function ProfileRead (props) {
   return (
     <Container>
       {/* Banner Section */}
-      {post.banner && !imageError.banner && (
+      {profile.banner && !imageError.banner && (
         <div className='position-relative'>
           <img
-            src={post.banner}
+            src={profile.banner}
             alt='Profile banner'
             className='w-100 rounded-4 shadow-sm'
             style={{ height: '200px', objectFit: 'cover' }}
@@ -82,10 +67,10 @@ function ProfileRead (props) {
       <div className='d-flex flex-column flex-md-row align-items-center gap-4 mb-5 p-3 p-md-5 bg-light rounded-4 shadow-sm'>
         {/* Profile Picture */}
         <div style={{ width: '120px', height: '120px' }} className='mb-3 mb-md-0'>
-          {post.picture && !imageError.picture
+          {profile.picture && !imageError.picture
             ? (
               <img
-                src={post.picture}
+                src={profile.picture}
                 alt='Profile'
                 className='rounded-circle shadow w-100 h-100'
                 style={{ objectFit: 'cover' }}
@@ -109,7 +94,7 @@ function ProfileRead (props) {
 
         {/* Profile Information */}
         <div className='flex-grow-1 text-center text-md-start mb-3 mb-md-0 d-flex flex-column align-items-center align-items-md-start'>
-          <h3 className='mb-2 fw-bold'>{post.name || 'username'}</h3>
+          <h3 className='mb-2 fw-bold'>{profile.name || 'username'}</h3>
 
           <div className='text-muted small mb-3 d-flex align-items-center flex-column flex-md-row'>
             <span className='text-truncate me-2 mb-2 mb-md-0'>
@@ -124,24 +109,24 @@ function ProfileRead (props) {
           </div>
 
           {/* About Section */}
-          {post.about && (
+          {profile.about && (
             <div className='fs-6 text-secondary'>
-              <NostrFormat content={post.about} />
+              <NostrFormat content={profile.about} />
             </div>
           )}
 
           {/* Website Link */}
-          {post.website && (
+          {profile.website && (
             <div className='mb-3 d-flex align-items-center gap-2'>
               <FontAwesomeIcon icon={faGlobe} className='text-muted' size='sm' />
               <a
-                href={post.website.startsWith('http') ? post.website : `https://${post.website}`}
+                href={profile.website.startsWith('http') ? profile.website : `https://${profile.website}`}
                 target='_blank'
                 rel='noopener noreferrer'
                 className='text-decoration-none text-muted small'
                 style={{ wordBreak: 'break-all' }}
               >
-                {post.website}
+                {profile.website}
               </a>
             </div>
           )}

src/components/app-body/nostr/profile/public-read.js

@@ -6,46 +6,38 @@ import React, { useEffect, useState } from 'react'
 import { Container, Card, Spinner } from 'react-bootstrap'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 import { faUser } from '@fortawesome/free-solid-svg-icons'
+
+// Local libraries
 import NostrFormat from '../nostr-format'
-import { RelayPool } from 'nostr'
-import * as nip19 from 'nostr-tools/nip19'
 
 function PublicRead (props) {
-  const { npub } = props
-  const { bchWalletState } = props.appData
+  const { npub, appData } = props
+  const { bchWalletState } = appData
   const [posts, setPosts] = useState([])
   const [loaded, setLoaded] = useState(false)
+  const [profilePictureError, setProfilePictureError] = useState(false)
 
   useEffect(() => {
     // Get Last post from a author
-    const start = () => {
-      const pubHexData = nip19.decode(npub)
-      const pubHex = pubHexData.data
-      console.log('pubhex', pubHex)
-      const psf = 'wss://nostr-relay.psfoundation.info'
-
-      const pool = RelayPool([psf])
-      pool.on('open', relay => {
-        relay.subscribe('subid', { limit: 5, kinds: [1], authors: [pubHex] })
-        setLoaded(true)
-      })
-
-      pool.on('eose', relay => {
-        console.log('Closing Relay')
-        setLoaded(true)
-        relay.close()
-      })
-
-      pool.on('event', (relay, subId, ev) => {
-        console.log('Received event:', ev)
-        setPosts(currentPosts => [...currentPosts, ev])
-      })
+    const start = async () => {
+      const pubKeyHex = appData.nostrQueries.npubToHex(npub)
+      const feeds = await appData.nostrQueries.getUserFeeds(pubKeyHex)
+      setPosts(feeds)
+      setLoaded(true)
     }
 
     if (!loaded && npub) {
       start()
     }
-  }, [bchWalletState, loaded, npub])
+  }, [bchWalletState, loaded, npub, appData])
+
+  const handleProfilePictureError = () => {
+    setProfilePictureError(true)
+  }
+
+  const handleProfilePictureLoad = () => {
+    setProfilePictureError(false)
+  }
 
   return (
     <Container className='mt-4 mb-5'>
@@ -74,7 +66,20 @@ function PublicRead (props) {
                       background: 'linear-gradient(45deg, #6c757d, #495057)'
                     }}
                   >
-                    <FontAwesomeIcon icon={faUser} size='1x' color='#7c7c7d' />
+                    {props.profile?.picture && !profilePictureError
+                      ? (
+                        <img
+                          src={props.profile.picture}
+                          alt='Profile'
+                          className='rounded-circle w-100 h-100'
+                          style={{ objectFit: 'cover' }}
+                          onError={handleProfilePictureError}
+                          onLoad={handleProfilePictureLoad}
+                        />
+                        )
+                      : (
+                        <FontAwesomeIcon icon={faUser} size='1x' color='#7c7c7d' />
+                        )}
                   </div>
                   <div className='flex-grow-1'>
                     <div className='fw-bold mb-1'>{props.profile?.name}</div>

src/components/app-body/slp-tokens/info-button.js

@@ -13,11 +13,11 @@ import { Button, Modal, Container, Row, Col } from 'react-bootstrap'
 // returned with a link. Otherwise the original string is returned.
 function linkIfUrl (url) {
   // Convert the URL into a link if it contains 'http'
-  if (url.includes('http')) {
+  if (url?.includes('http')) {
     url = (<a href={url} target='_blank' rel='noreferrer'>{url}</a>)
 
     //
-  } else if (url.includes('ipfs://')) {
+  } else if (url?.includes('ipfs://')) {
     // Convert to a Filecoin link if its an IPFS reference.
 
     const cid = url.substring(7)

src/config/index.js

@@ -18,7 +18,12 @@ const config = {
   // dexServer: 'http://localhost:5700',
 
   nostrTopic: 'bch-dex-test-topic-02',
-  nostrRelay: 'wss://nostr-relay.psfoundation.info'
+  nostrRelay: 'wss://nostr-relay.psfoundation.info',
+  nostrRelays: [
+    'wss://nostr-relay.psfoundation.info',
+    'wss://nos.lol',
+    'wss://relay.damus.io'
+  ]
 
 }
 

src/hooks/state.js

@@ -2,6 +2,7 @@ import { useState } from 'react'
 // import { useQueryParam, StringParam } from 'use-query-params'
 import useLocalStorageState from 'use-local-storage-state'
 import AppUtil from '../util'
+import NostrQueries from '../services/nostr-queries'
 
 import { useLocation } from 'react-router-dom'
 
@@ -156,7 +157,8 @@ function useAppState () {
     lastFeedTab,
     setLastFeedTab,
     isSingleView,
-    setIsSingleView
+    setIsSingleView,
+    nostrQueries: new NostrQueries()
   }
 }
 

src/services/nostr-queries.js

@@ -0,0 +1,235 @@
+/**
+ *  Nostr class for query into relay pools
+ *
+ */
+import config from '../config'
+import { RelayPool } from 'nostr'
+import * as nip19 from 'nostr-tools/nip19'
+
+export default class NostrQueries {
+  constructor () {
+    this.relays = config.nostrRelays
+  }
+
+  npubToHex (npub) {
+    const pubHexData = nip19.decode(npub)
+    const pubHex = pubHexData.data
+    return pubHex
+  }
+
+  // Load profile from nostr relays
+  // It uses multiple relays. It will exit after the first successful retrieval
+  // from any relay. If one relay fails, it will move on to the next one.
+  async getProfile (pubHex) {
+    try {
+      for (let i = 0; i < this.relays.length; i++) {
+        const profile = await new Promise((resolve) => {
+          const relay = this.relays[i]
+          // const pool = RelayPool(config.nostrRelays)
+          const pool = RelayPool([relay])
+          pool.on('open', relay => {
+            relay.subscribe('subid', { limit: 5, kinds: [0], authors: [pubHex] })
+          })
+
+          pool.on('eose', relay => {
+            relay.close()
+            resolve(false)
+          })
+
+          pool.on('event', (relay, subId, ev) => {
+            try {
+              const profile = JSON.parse(ev.content)
+              // console.log('profile', profile)
+              console.log(`Profile found  for ${pubHex} at ${relay.url}`)
+              resolve(profile)
+            } catch (error) {
+              resolve(false)
+            }
+            relay.close()
+          })
+        })
+        // Stop looking for profile if found
+        if (profile) {
+          return profile
+        }
+      }
+    } catch (error) {
+      console.warn(error)
+    }
+  }
+
+  // Get Feeds by user pubkey
+  async getUserFeeds (pubHex) {
+    try {
+      let feeds = await new Promise((resolve) => {
+        let list = []
+        let closedRelays = 0
+
+        const pool = RelayPool(this.relays)
+
+        pool.on('open', relay => {
+          relay.subscribe('subid', { limit: 5, kinds: [1], authors: [pubHex] })
+        })
+
+        pool.on('eose', relay => {
+          relay.close()
+          closedRelays++
+          // Resolve list if all relays are closed
+          if (closedRelays === config.nostrRelays.length) {
+            resolve(list)
+          }
+        })
+
+        pool.on('event', (relay, subId, ev) => {
+          list = [...list, ev]
+        })
+      })
+      // Remove duplicated feeds
+      feeds = feeds.filter((val, i, list) => {
+        const existingIndex = list.findIndex(value => value.id === val.id)
+        return existingIndex === i
+      })
+
+      // Sort from newest to oldest
+      feeds.sort((a, b) => b.created_at - a.created_at)
+
+      return feeds
+    } catch (error) {
+      console.warn(error)
+    }
+  }
+
+  // Get global feeds
+  async getGlobalFeeds () {
+    try {
+      let feeds = await new Promise((resolve, reject) => {
+        let list = []
+        let closedRelays = 0
+
+        const pool = RelayPool(config.nostrRelays)
+        // const pool = RelayPool([config.nostrRelay])
+        pool.on('open', relay => {
+          relay.subscribe('REQ', { limit: 10, kinds: [1], '#t': ['slpdex-socialmedia'] })
+        })
+
+        pool.on('eose', relay => {
+          relay.close()
+          closedRelays++
+          // Resolve list if all relays are closed
+          if (closedRelays === config.nostrRelays.length) {
+            resolve(list)
+          }
+        })
+
+        pool.on('event', (relay, subId, ev) => {
+          // console.log('post retrieved from ', relay.url, ev.sig)
+          list = [...list, ev]
+        })
+      })
+
+      // Remove duplicated feeds
+      feeds = feeds.filter((val, i, list) => {
+        const existingIndex = list.findIndex(value => value.id === val.id)
+        return existingIndex === i
+      })
+
+      // Sort from newest to oldest
+      feeds.sort((a, b) => b.created_at - a.created_at)
+
+      // console.log('feeds', feeds)
+
+      return feeds
+    } catch (error) {
+      console.warn(error)
+    }
+  }
+
+  // Get follow list by pubkey
+  async getFollowList (pubHex) {
+    return new Promise((resolve, reject) => {
+      let list = []
+      let closedRelays = 0
+
+      const pool = RelayPool(config.nostrRelays)
+      // const pool = RelayPool([config.nostrRelay])
+      pool.on('open', relay => {
+        relay.subscribe('subid', { limit: 1, kinds: [3], authors: [pubHex] })
+      })
+
+      pool.on('eose', relay => {
+        relay.close()
+        closedRelays++
+        // Resolve list if all relays are closed
+        if (closedRelays === this.relays.length) {
+          resolve(list)
+        }
+      })
+
+      pool.on('event', (relay, subId, ev) => {
+        // console.log('Received event:', ev)
+        // Merge list received from all relays
+        list = [...list, ...ev.tags]
+      })
+    })
+  }
+
+  // Get event likes
+  async getPostLikes (postId) {
+    try {
+      let likesRes = await new Promise((resolve) => {
+        const likes = []
+        let closedRelays = 0
+
+        const pool = RelayPool(this.relays)
+        pool.on('open', relay => {
+          relay.subscribe('subid', { kinds: [7], '#e': [postId] })
+        })
+
+        pool.on('eose', relay => {
+          relay.close()
+          closedRelays++
+          // Resolve list if all relays are closed
+          if (closedRelays === this.relays.length) {
+            resolve(likes)
+          }
+        })
+
+        pool.on('event', (relay, subId, ev) => {
+          try {
+            // Count likes
+            if (ev.content === '+' || ev.content === '-') {
+              likes.push(ev)
+            }
+          } catch (error) {
+            // skip error
+          }
+        })
+      })
+
+      // Remove duplicated events
+      likesRes = likesRes.filter((val, i, list) => {
+        const existingIndex = list.findIndex(value => value.id === val.id)
+        return existingIndex === i
+      })
+      // Get likes
+      const likesArr = likesRes.filter((val, i, list) => {
+        return val.content === '+'
+      })
+
+      // Get dislikes
+      const dislikesArr = likesRes.filter((val, i, list) => {
+        return val.content === '-'
+      })
+      // For every user dislike remove a user like from the array
+      for (let i = 0; i < dislikesArr.length; i++) {
+        const disLike = dislikesArr[i]
+        const likeExist = likesArr.findIndex(val => val.pubkey === disLike.pubkey)
+        if (likeExist >= 0) likesArr.splice(likeExist, 1)
+      }
+      // Return array of likes.
+      return likesArr
+    } catch (error) {
+      console.warn(error)
+    }
+  }
+}