refactor: Update useMarket composable to utilize fetchEvents method and improve subscription handling

- Replace direct calls to fetchNotes with the new fetchEvents method in useMarket.ts for better event retrieval.
- Simplify event fetching logic by removing unnecessary filters and enhancing clarity.
- Implement individual relay subscriptions for market updates, allowing for more efficient event handling and cleanup.

src/composables/useMarket.ts

@@ -2,6 +2,7 @@ import { ref, computed, readonly } from 'vue'
 import { useNostrStore } from '@/stores/nostr'
 import { useMarketStore, type Market, type Stall, type Product } from '@/stores/market'
 import { config } from '@/lib/config'
+import { nip19 } from 'nostr-tools'
 
 // Nostr event kinds for market functionality
 const MARKET_EVENT_KINDS = {
@@ -26,7 +27,7 @@ export function useMarket() {
       error.value = null
       
       // Decode naddr
-      const { type, data } = window.NostrTools.nip19.decode(naddr)
+      const { type, data } = nip19.decode(naddr)
       if (type !== 'naddr' || data.kind !== MARKET_EVENT_KINDS.MARKET) {
         throw new Error('Invalid market naddr')
       }
@@ -70,13 +71,11 @@ export function useMarket() {
       const client = nostrStore.getClient()
       
       // Fetch market configuration event
-      const filters = [{
+      const events = await client.fetchEvents({
         kinds: [MARKET_EVENT_KINDS.MARKET],
         authors: [marketData.pubkey],
         '#d': [marketData.d]
-      }]
-      
-      const events = await client.fetchNotes({ filters })
+      })
       
       if (events.length > 0) {
         const marketEvent = events[0]
@@ -103,12 +102,10 @@ export function useMarket() {
       const client = nostrStore.getClient()
       
       // Fetch stall events for this market
-      const filters = [{
+      const events = await client.fetchEvents({
         kinds: [MARKET_EVENT_KINDS.STALL],
         authors: [marketPubkey]
-      }]
-      
-      const events = await client.fetchNotes({ filters })
+      })
       
       events.forEach(event => {
         try {
@@ -145,12 +142,10 @@ export function useMarket() {
       if (stallPubkeys.length === 0) return
       
       // Fetch product events from all stalls
-      const filters = [{
+      const events = await client.fetchEvents({
         kinds: [MARKET_EVENT_KINDS.PRODUCT],
         authors: stallPubkeys
-      }]
-      
-      const events = await client.fetchNotes({ filters })
+      })
       
       events.forEach(event => {
         try {
@@ -198,12 +193,24 @@ export function useMarket() {
         }
       ]
       
-      const unsubscribe = client.subscribeToNotes((event) => {
-        handleMarketEvent(event)
-      }, filters)
+      // Subscribe to each relay individually
+      const unsubscribes = config.market.supportedRelays.map(relay => {
+        const sub = client.poolInstance.subscribeMany(
+          [relay],
+          filters,
+          {
+            onevent: (event: any) => {
+              handleMarketEvent(event)
+            }
+          }
+        )
+        return () => sub.close()
+      })
       
-      // Store unsubscribe function for cleanup
-      return unsubscribe
+      // Return a function that unsubscribes from all relays
+      return () => {
+        unsubscribes.forEach(unsub => unsub())
+      }
       
     } catch (err) {
       console.error('Error subscribing to market updates:', err)

src/lib/nostr/client.ts

@@ -29,6 +29,10 @@ export class NostrClient {
     return this._isConnected
   }
 
+  get poolInstance(): SimplePool {
+    return this.pool
+  }
+
   async connect(): Promise<void> {
     try {
       // Try to connect to at least one relay
@@ -205,6 +209,67 @@ export class NostrClient {
     }
   }
 
+  /**
+   * Fetch events by kind
+   */
+  async fetchEvents(options: {
+    kinds: number[]
+    authors?: string[]
+    limit?: number
+    since?: number
+    until?: number
+    '#d'?: string[]
+  } = {}): Promise<Event[]> {
+    const {
+      kinds,
+      authors,
+      limit = 100,
+      since,
+      until,
+      '#d': dTags
+    } = options
+
+    const filters: Filter[] = [{
+      kinds,
+      limit,
+      ...(authors && { authors }),
+      ...(since && { since }),
+      ...(until && { until }),
+      ...(dTags && { '#d': dTags })
+    }]
+
+    try {
+      const allEvents: Event[] = []
+      
+      const subscription = this.pool.subscribeMany(this.relays, filters, {
+        onevent(event: Event) {
+          allEvents.push(event)
+        },
+        oneose() {
+          // End of stored events - subscription is complete for initial fetch
+        }
+      })
+      
+      // Wait for events to be collected
+      await new Promise(resolve => setTimeout(resolve, 2000))
+      
+      // Close the subscription
+      subscription.close()
+      
+      // Deduplicate events by ID
+      const uniqueEvents = Array.from(
+        new Map(allEvents.map(event => [event.id, event])).values()
+      )
+
+      return uniqueEvents
+        .sort((a, b) => b.created_at - a.created_at)
+        .slice(0, limit)
+    } catch (error) {
+      console.error('Failed to fetch events:', error)
+      throw error
+    }
+  }
+
   /**
    * Fetch user profiles
    */