更新 pdf 格式

app.py

@@ -1,7 +1,9 @@
-from fastapi import FastAPI
+from fastapi import FastAPI, Request
 from fastapi.staticfiles import StaticFiles
 from pydantic import BaseModel
 from reportlab.pdfgen import canvas
+from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.ttfonts import TTFont
 import uuid, os
 
 app = FastAPI()
@@ -9,19 +11,27 @@ app = FastAPI()
 os.makedirs("static", exist_ok=True)
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
+# ✅ 註冊中文字體（請確保字體檔案存在）
+font_path = "NotoSansTC-Medium.ttf"  # 或使用微軟系統內建：msjh.ttc（微軟正黑體）
+if os.path.exists(font_path):
+    pdfmetrics.registerFont(TTFont("MyFont", font_path))
+    font_name = "MyFont"
+else:
+    font_name = "Helvetica"  # fallback
+
 class TextRequest(BaseModel):
     content: str
 
 @app.post("/generate-pdf")
-def generate_pdf(data: TextRequest):
+def generate_pdf(data: TextRequest, request: Request):
     filename = f"{uuid.uuid4()}.pdf"
     filepath = os.path.join("static", filename)
 
     c = canvas.Canvas(filepath)
-    c.setFont("Helvetica", 12)
-    c.drawString(100, 750, data.content[:1000])  # 控制最多幾個字，否則會 overflow
+    c.setFont(font_name, 12)
+    c.drawString(100, 750, data.content[:1000])
     c.save()
 
     return {
-        "url": f"/static/{filename}"
+        "url": str(request.base_url) + f"static/{filename}"
     }