From cf537628cf4ea6aa4c2642eb4b91e250f7923dfd Mon Sep 17 00:00:00 2001
From: MarekWo <mwojtaszek@gmail.com>
Date: Wed, 18 Feb 2026 08:26:43 +0100
Subject: [PATCH] feat: Add MeshCore Analyzer link button to channel messages

Compute packet_hash from pkt_payload (SHA-256 of type byte + payload)
and generate analyzer.letsmesh.net links. Button appears on both sent
and received messages when echo data is available.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 app/routes/api.py         | 21 +++++++++++++++++++++
 app/static/js/app.js      | 10 ++++++++++
 meshcore-bridge/bridge.py |  8 +++++---
 3 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/app/routes/api.py b/app/routes/api.py
index 4e3188e..23396f3 100644
--- a/app/routes/api.py
+++ b/app/routes/api.py
@@ -2,6 +2,7 @@
 REST API endpoints for mc-webui
 """
 
+import hashlib
 import logging
 import json
 import re
@@ -33,6 +34,20 @@ _contacts_detailed_cache_timestamp = 0
 CONTACTS_DETAILED_CACHE_TTL = 60  # seconds
 
 
+ANALYZER_BASE_URL = 'https://analyzer.letsmesh.net/packets?packet_hash='
+GRP_TXT_TYPE_BYTE = 0x05
+
+
+def compute_analyzer_url(pkt_payload):
+    """Compute MeshCore Analyzer URL from a hex-encoded pkt_payload."""
+    try:
+        raw = bytes([GRP_TXT_TYPE_BYTE]) + bytes.fromhex(pkt_payload)
+        packet_hash = hashlib.sha256(raw).hexdigest()[:16].upper()
+        return f"{ANALYZER_BASE_URL}{packet_hash}"
+    except (ValueError, TypeError):
+        return None
+
+
 def get_channels_cached(force_refresh=False):
     """
     Get channels with caching to reduce USB/meshcli calls.
@@ -321,6 +336,9 @@ def get_messages():
                                         abs(msg['timestamp'] - ec['timestamp']) < 5):
                                     msg['echo_count'] = ec['count']
                                     msg['echo_paths'] = ec.get('paths', [])
+                                    pkt = ec.get('pkt_payload')
+                                    if pkt:
+                                        msg['analyzer_url'] = compute_analyzer_url(pkt)
                                     break
 
                     # Merge incoming paths into received messages
@@ -342,6 +360,9 @@ def get_messages():
                                         best_delta = delta
                             if best_match:
                                 msg['path'] = best_match['path']
+                                pkt = best_match.get('pkt_payload')
+                                if pkt:
+                                    msg['analyzer_url'] = compute_analyzer_url(pkt)
             except Exception as e:
                 logger.debug(f"Echo data fetch failed (non-critical): {e}")
 
diff --git a/app/static/js/app.js b/app/static/js/app.js
index 28f1be8..8edf304 100644
--- a/app/static/js/app.js
+++ b/app/static/js/app.js
@@ -746,6 +746,11 @@ function createMessageElement(msg) {
                     <div class="message-content">${processMessageContent(msg.content)}</div>
                     <div class="message-actions justify-content-end">
                         ${echoDisplay}
+                        ${msg.analyzer_url ? `
+                            <button class="btn btn-outline-secondary btn-msg-action" onclick="window.open('${msg.analyzer_url}', 'meshcore-analyzer')" title="View in Analyzer">
+                                <i class="bi bi-search"></i>
+                            </button>
+                        ` : ''}
                         <button class="btn btn-outline-secondary btn-msg-action" onclick='resendMessage(${JSON.stringify(msg.content)})' title="Resend">
                             <i class="bi bi-arrow-repeat"></i>
                         </button>
@@ -785,6 +790,11 @@ function createMessageElement(msg) {
                                 <i class="bi bi-geo-alt"></i>
                             </button>
                         ` : ''}
+                        ${msg.analyzer_url ? `
+                            <button class="btn btn-outline-secondary btn-msg-action" onclick="window.open('${msg.analyzer_url}', 'meshcore-analyzer')" title="View in Analyzer">
+                                <i class="bi bi-search"></i>
+                            </button>
+                        ` : ''}
                     </div>
                 </div>
             </div>
diff --git a/meshcore-bridge/bridge.py b/meshcore-bridge/bridge.py
index 8f2a2e7..f6c3115 100644
--- a/meshcore-bridge/bridge.py
+++ b/meshcore-bridge/bridge.py
@@ -1274,11 +1274,11 @@ def get_echo_counts():
         {
             "success": true,
             "echo_counts": [
-                {"timestamp": 1706500000.123, "channel_idx": 0, "count": 3, "paths": ["5e", "d1", "a3"]},
+                {"timestamp": 1706500000.123, "channel_idx": 0, "count": 3, "paths": ["5e", "d1", "a3"], "pkt_payload": "abcd..."},
                 ...
             ],
             "incoming_paths": [
-                {"timestamp": 1706500000.456, "path": "8a40a605", "path_len": 4, "snr": 11.0},
+                {"timestamp": 1706500000.456, "path": "8a40a605", "path_len": 4, "snr": 11.0, "pkt_payload": "efgh..."},
                 ...
             ]
         }
@@ -1293,7 +1293,8 @@ def get_echo_counts():
                 'timestamp': data['timestamp'],
                 'channel_idx': data['channel_idx'],
                 'count': len(data['paths']),
-                'paths': list(data['paths'])
+                'paths': list(data['paths']),
+                'pkt_payload': pkt_payload,
             })
 
         incoming = []
@@ -1303,6 +1304,7 @@ def get_echo_counts():
                 'path': data['path'],
                 'path_len': data.get('path_len'),
                 'snr': data.get('snr'),
+                'pkt_payload': pkt_payload,
             })
 
     return jsonify({