Update conversations.php

conversations.php

@@ -1034,6 +1034,8 @@
                 this._stagedMessages = [];
                 // Last message timestamp seen (for delta polling)
                 this._latestMessage = null;
+                // Preloaded messages cache used when we explicitly fetch before opening a conversation
+                this._preloadedMessages = null;
                 // Removed: automatic "Nuevos mensajes" indicator — we always reload full conversation now
                 // this._lastRenderMessageCount = 0;
 
@@ -1213,8 +1215,25 @@
                     } else if (userId) {
                         const conv = this.conversations.find(c => c.user_id == userId);
                         if (conv) {
+                            // Prefetch messages then open conversation using preloaded data to avoid double-fetch
+                            try {
+                                const url = `get_user_messages.php?user_id=${encodeURIComponent(userId)}&limit=${this.messageLimit}`;
+                                const resp = await this.apiCall(url);
+                                if (resp && resp.success) {
+                                    this._preloadedMessages = { userId: userId, resp: resp };
+                                }
+                            } catch (e) { console.warn('Prefetch messages failed', e); }
+
                             this.openConversation(conv.user_id, conv.name, conv.phone_number);
                         } else {
+                            try {
+                                const url = `get_user_messages.php?user_id=${encodeURIComponent(userId)}&limit=${this.messageLimit}`;
+                                const resp = await this.apiCall(url);
+                                if (resp && resp.success) {
+                                    this._preloadedMessages = { userId: userId, resp: resp };
+                                }
+                            } catch (e) { console.warn('Prefetch messages failed', e); }
+
                             this.openConversation(userId, 'Usuario', '');
                         }
                     }
@@ -2723,9 +2742,18 @@
                 try {
                     // Not sending 'before' param due to unstable server behavior in some cases.
                     // The server-side pagination/fallback and client-side dedupe should handle continuity.
-                    let url = `get_user_messages.php?user_id=${userId}&limit=${this.messageLimit}`;
+                    // If we prefetched data (e.g. from notification click), use it to avoid double fetch
+                    let data = null;
+                    if (initial && this._preloadedMessages && this._preloadedMessages.userId == userId && this._preloadedMessages.resp) {
+                        data = this._preloadedMessages.resp;
+                        // clear preloaded cache
+                        this._preloadedMessages = null;
+                        if (console && console.debug) console.debug('Using preloaded messages for user', userId);
+                    } else {
+                        let url = `get_user_messages.php?user_id=${userId}&limit=${this.messageLimit}`;
+                        data = await this.apiCall(url);
+                    }
 
-                    const data = await this.apiCall(url);
                     if (!data) throw new Error('No autorizado o error en la petición');
 
                     let messages = [];