워터마크 기능 추가

backend-node/src/controllers/reportController.ts

@@ -27,7 +27,11 @@ import {
   BorderStyle,
   PageOrientation,
   convertMillimetersToTwip,
+  Header,
+  Footer,
+  HeadingLevel,
 } from "docx";
+import { WatermarkConfig } from "../types/report";
 import bwipjs from "bwip-js";
 
 export class ReportController {
@@ -3063,6 +3067,36 @@ export class ReportController {
           children.push(new Paragraph({ children: [] }));
         }
 
+        // 워터마크 헤더 생성 (워터마크가 활성화된 경우)
+        const watermark: WatermarkConfig | undefined = page.watermark;
+        let headers: { default?: Header } | undefined;
+
+        if (watermark?.enabled && watermark.type === "text" && watermark.text) {
+          // 워터마크 색상을 hex로 변환 (alpha 적용)
+          const opacity = watermark.opacity ?? 0.3;
+          const fontColor = watermark.fontColor || "#CCCCCC";
+          // hex 색상에서 # 제거
+          const cleanColor = fontColor.replace("#", "");
+
+          headers = {
+            default: new Header({
+              children: [
+                new Paragraph({
+                  alignment: AlignmentType.CENTER,
+                  children: [
+                    new TextRun({
+                      text: watermark.text,
+                      size: (watermark.fontSize || 48) * 2, // Word는 half-point 사용
+                      color: cleanColor,
+                      bold: true,
+                    }),
+                  ],
+                }),
+              ],
+            }),
+          };
+        }
+
         return {
           properties: {
             page: {
@@ -3082,6 +3116,7 @@ export class ReportController {
               },
             },
           },
+          headers,
           children,
         };
       });