改动结果：

聊天窗口工具栏新增了“表情”按钮，打开表情库弹窗。表情库会从历史“已下载落盘的表情消息”里自动聚合。选中后直接通过 send_emoji_message(wxid, md5, total_length) 发原生表情，不是当普通图片发。仍保持你现在的发送通道和聊天刷新逻辑。主要改动文件：后端接口与发送支持：contacts.py 表情资源查询：message_storage.py 前端表情面板与发送交互：contacts_management.html 新增接口： GET /contacts/api/emojis：返回聚合后的表情库（md5、total_length、预览图）。 POST /contacts/api/send_message 新增 type=emoji。我也做了 Python 语法检查，相关后端文件都通过了。你可以直接在聊天弹窗里点“表情”试一下。如果表情库为空，通常是该群还没落盘到 image_path，让媒体下载功能先抓几条表情就会出现。
2026-04-15 11:21:32 +08:00
parent 96f50d929b
commit 47f8bd5717
3 changed files with 191 additions and 1 deletions
--- a/admin/dashboard/blueprints/contacts.py
+++ b/admin/dashboard/blueprints/contacts.py
@@ -1,4 +1,6 @@
 import asyncio
+import os
+import re
 import threading
 import xml.etree.ElementTree as ET
 from concurrent.futures import ThreadPoolExecutor
@@ -15,6 +17,9 @@ message_thread_pool = ThreadPoolExecutor(max_workers=10, thread_name_prefix="mes
 # 创建共享的事件循环
 shared_loop = None
 loop_lock = threading.Lock()
+_PROJECT_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", ".."))
+_EMOJI_MD5_RE = re.compile(r'md5\s*=\s*[\"\']([0-9a-fA-F]{16,64})[\"\']', re.IGNORECASE)
+_EMOJI_TOTALLEN_RE = re.compile(r'(?:totallen|total_len|len)\s*=\s*[\"\'](\d+)[\"\']', re.IGNORECASE)

 def get_or_create_loop():
    """获取或创建共享的事件循环"""
@@ -139,6 +144,39 @@ def _compact_media_caption(content: str, fallback: str) -> str:
    return text


+def _extract_emoji_meta(attachment_url: str, image_path: str):
+    text = _safe_text(attachment_url)
+    md5 = ""
+    total_length = 0
+
+    md5_match = _EMOJI_MD5_RE.search(text)
+    if md5_match:
+        md5 = md5_match.group(1).lower()
+
+    len_match = _EMOJI_TOTALLEN_RE.search(text)
+    if len_match:
+        try:
+            total_length = int(len_match.group(1))
+        except Exception:
+            total_length = 0
+
+    if not md5 and image_path:
+        filename = os.path.basename(_safe_text(image_path))
+        stem = os.path.splitext(filename)[0]
+        if re.fullmatch(r"[0-9a-fA-F]{16,64}", stem):
+            md5 = stem.lower()
+
+    if total_length <= 0 and image_path and image_path.startswith("/static/"):
+        abs_path = os.path.join(_PROJECT_ROOT, image_path.lstrip("/").replace("/", os.sep))
+        if os.path.isfile(abs_path):
+            try:
+                total_length = int(os.path.getsize(abs_path))
+            except Exception:
+                total_length = 0
+
+    return md5, total_length
+
+
 def _normalize_recent_message(server, raw_message: dict, chat_type: str, target_wxid: str):
    sender = _safe_text(raw_message.get("sender")).strip()
    message_type = str(raw_message.get("message_type", ""))
@@ -499,6 +537,46 @@ def api_recent_messages():
        return jsonify({"success": False, "message": str(e)}), 500


+@contacts_bp.route('/api/emojis', methods=['GET'])
+@login_required
+def api_emoji_library():
+    """获取已下载表情库（从历史消息聚合）。"""
+    try:
+        server = current_app.dashboard_server
+        limit = min(max(int(request.args.get("limit", 200)), 1), 500)
+        records = server.message_storage.message_db.get_recent_emoji_assets(limit=limit)
+        dedup = {}
+        for item in records:
+            image_path = _safe_text(item.get("image_path")).strip()
+            if not image_path:
+                continue
+            md5, total_length = _extract_emoji_meta(_safe_text(item.get("attachment_url")), image_path)
+            if not md5 or total_length <= 0:
+                continue
+            if md5 in dedup:
+                continue
+            dedup[md5] = {
+                "md5": md5,
+                "total_length": total_length,
+                "preview_url": image_path,
+                "timestamp": _safe_text(item.get("timestamp")),
+                "group_id": _safe_text(item.get("group_id")),
+                "message_id": _safe_text(item.get("message_id")),
+            }
+
+        emojis = list(dedup.values())
+        return jsonify({
+            "success": True,
+            "data": {
+                "emojis": emojis,
+                "count": len(emojis)
+            }
+        })
+    except Exception as e:
+        logger.exception(f"获取表情库失败: {e}")
+        return jsonify({"success": False, "message": str(e)}), 500
+
+
@contacts_bp.route('/api/send_message', methods=['POST'])
@login_required
 def api_send_message():
@@ -582,6 +660,19 @@ def api_send_message():
                'message': '消息发送中'
            })

+        elif msg_type == 'emoji':
+            if not isinstance(content, dict):
+                return jsonify({'success': False, 'message': '表情参数格式错误'})
+            md5 = _safe_text(content.get('md5')).strip().lower()
+            total_length = int(content.get('total_length') or 0)
+            if not md5 or total_length <= 0:
+                return jsonify({'success': False, 'message': '缺少表情 md5 或长度'})
+            send_message_in_thread(server.client.send_emoji_message, wxid, md5, total_length)
+            return jsonify({
+                'success': True,
+                'message': '消息发送中'
+            })
+
        else:
            return jsonify({'success': False, 'message': '不支持的消息类型'})