fix: use SSH for direct database queries instead of port-forward

The user-notes command in cli-anything-codimd doesn't support PostgreSQL,
so the script now queries the database directly via SSH kubectl exec.
Also fixes SQL quote handling in db-query command.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/codimd/db-query-users.sh

@@ -1,24 +1,21 @@
 #!/bin/bash
 # CodiMD 資料庫查詢工具
 
-DB_TYPE="postgresql"
-DB_HOST="localhost"
+REMOTE_HOST="ubuntu@192.168.42.120"
+DB_POD_NAME="codimd-db-0"
+DB_NAMESPACE="default"
 DB_NAME="codimd"
 DB_USER="codimd"
-DB_PASSWORD="8xG94tL0uKlGiBEd"
 
-# 檢查 port-forward 是否運行
-if ! nc -z localhost 5432 2>/dev/null; then
-    echo "❌ Port-forward 未運行，請先執行: ./db-port-forward.sh"
-    exit 1
-fi
+# 取得實際運行的 pod 名稱
+get_db_pod() {
+    ssh "$REMOTE_HOST" "sudo kubectl get pod -n $DB_NAMESPACE -l app=codimd-db -o jsonpath='{.items[0].metadata.name}'"
+}
 
-# 檢查 cli-anything-codimd 是否存在
-if ! command -v cli-anything-codimd &> /dev/null; then
-    echo "❌ cli-anything-codimd 未找到"
-    echo "   請先安裝: https://github.com/your-repo/cli-anything-codimd"
-    exit 1
-fi
+# 檢查是否已透過 SSH 建立 port-forward
+check_ssh_pf() {
+    pgrep -f "port-forward.*codimd-db" > /dev/null
+}
 
 SCRIPT_NAME=$(basename "$0")
 
@@ -31,45 +28,67 @@ if [ -z "$1" ]; then
     echo "指令:"
     echo "  list-users              列出所有使用者"
     echo "  user-notes <user-id>    查看特定使用者的筆記"
+    echo "  note-count <user-id>    統計使用者筆記數量"
+    echo "  db-query <sql>          執行自訂 SQL 查詢"
     echo ""
     echo "範例:"
     echo "  $SCRIPT_NAME list-users"
     echo "  $SCRIPT_NAME user-notes 33eabf61-c2ad-410e-99e0-19e11d86beec"
+    echo "  $SCRIPT_NAME note-count 33eabf61-c2ad-410e-99e0-19e11d86beec"
+    echo "  $SCRIPT_NAME db-query 'SELECT COUNT(*) FROM \"Notes\";'"
     exit 0
 fi
 
+DB_POD=$(get_db_pod)
+
 case "$1" in
     list-users)
-        cli-anything-codimd admin list-users \
-            --db-type "$DB_TYPE" \
-            --db-host "$DB_HOST" \
-            --db-name "$DB_NAME" \
-            --db-user "$DB_USER" \
-            --db-password "$DB_PASSWORD"
+        if check_ssh_pf; then
+            # 使用 port-forward 和 cli-anything-codimd
+            if command -v cli-anything-codimd &> /dev/null; then
+                cli-anything-codimd admin list-users \
+                    --db-type postgresql \
+                    --db-host localhost \
+                    --db-name "$DB_NAME" \
+                    --db-user "$DB_USER" \
+                    --db-password 8xG94tL0uKlGiBEd
+            else
+                echo "⚠️  cli-anything-codimd 未安裝"
+            fi
+        else
+            echo "⚠️  Port-forward 未運行，透過 SSH 直接查詢"
+        fi
+        # 總是顯示直接查詢結果
+        ssh "$REMOTE_HOST" "sudo kubectl exec $DB_POD -- psql -U $DB_USER -d $DB_NAME -c 'SELECT id, email, profile, \"createdAt\" FROM \"Users\";'"
         ;;
     user-notes)
         if [ -z "$2" ]; then
             echo "用法: $0 user-notes <user-id>"
             exit 1
         fi
-        cli-anything-codimd admin user-notes "$2" \
-            --db-type "$DB_TYPE" \
-            --db-host "$DB_HOST" \
-            --db-name "$DB_NAME" \
-            --db-user "$DB_USER" \
-            --db-password "$DB_PASSWORD"
+        echo "=== 使用者筆記列表 ==="
+        ssh "$REMOTE_HOST" "sudo kubectl exec $DB_POD -- psql -U $DB_USER -d $DB_NAME -c \"SELECT id, alias, title, \\\"lastchangeAt\\\", permission FROM \\\"Notes\\\" WHERE \\\"ownerId\\\" = '$2' ORDER BY \\\"lastchangeAt\\\" DESC;\""
+        ;;
+    note-count)
+        if [ -z "$2" ]; then
+            echo "用法: $0 note-count <user-id>"
+            exit 1
+        fi
+        ssh "$REMOTE_HOST" "sudo kubectl exec $DB_POD -- psql -U $DB_USER -d $DB_NAME -t -c \"SELECT COUNT(*) FROM \\\"Notes\\\" WHERE \\\"ownerId\\\" = '$2';\""
+        ;;
+    db-query)
+        shift
+        SQL="$*"
+        if [ -z "$SQL" ]; then
+            echo "用法: $0 db-query <sql>"
+            exit 1
+        fi
+        ssh "$REMOTE_HOST" "sudo kubectl exec $DB_POD -- psql -U $DB_USER -d $DB_NAME -c '$SQL'"
         ;;
     *)
-        echo "=== CodiMD 資料庫查詢工具 ==="
+        echo "❌ 未知指令: $1"
         echo ""
-        echo "用法: $0 <command> [args]"
-        echo ""
-        echo "指令:"
-        echo "  list-users              列出所有使用者"
-        echo "  user-notes <user-id>    查看特定使用者的筆記"
-        echo ""
-        echo "範例:"
-        echo "  $0 list-users"
-        echo "  $0 user-notes 33eabf61-c2ad-410e-99e0-19e11d86beec"
+        echo "可用指令: list-users, user-notes, note-count, db-query"
+        exit 1
         ;;
 esac