Update app.py

app.py

@@ -1,5 +1,6 @@
 import os
 import uuid
+import tempfile
 from datetime import datetime, timedelta, timezone
 
 from flask import Flask, request, abort, send_from_directory
@@ -10,7 +11,6 @@ from linebot.v3.messaging import (
     Configuration, ApiClient, MessagingApi,
     ReplyMessageRequest, TextMessage
 )
-# ✅ LINE v3: use ImageMessage (not ImageSendMessage)
 from linebot.v3.messaging.models import ImageMessage
 from linebot.v3.webhooks import MessageEvent, TextMessageContent
 
@@ -21,12 +21,14 @@ import plotly.express as px
 # --- Environment Variables ---
 CHANNEL_ACCESS_TOKEN = os.getenv("CHANNEL_ACCESS_TOKEN")
 CHANNEL_SECRET = os.getenv("CHANNEL_SECRET")
-HF_SPACE_URL = os.getenv("SPACEURL")  # optional: https://<space-name>.hf.space
+HF_SPACE_URL = os.getenv("SPACEURL")  # e.g., https://<space>.hf.space
 
-# --- Flask & LINE Bot Initialization ---
-app = Flask(__name__)
-os.makedirs("static", exist_ok=True)
+# --- Writable static directory (avoid PermissionError) ---
+STATIC_DIR = os.getenv("STATIC_DIR", os.path.join(tempfile.gettempdir(), "static"))
+os.makedirs(STATIC_DIR, exist_ok=True)
 
+# --- Flask & LINE Bot ---
+app = Flask(__name__)
 configuration = Configuration(access_token=CHANNEL_ACCESS_TOKEN)
 handler = WebhookHandler(CHANNEL_SECRET)
 
@@ -59,9 +61,10 @@ def home():
 def healthz():
     return "ok"
 
+# Serve files from our writable static dir (e.g., /tmp/static)
 @app.route("/static/<path:filename>")
 def serve_static(filename):
-    return send_from_directory("static", filename)
+    return send_from_directory(STATIC_DIR, filename)
 
 # --- Earthquake Query Logic ---
 USGS_API_BASE_URL = "https://earthquake.usgs.gov/fdsnws/event/1/query"
@@ -136,9 +139,8 @@ def fetch_taiwan_df_this_year(min_mag=5.0) -> pd.DataFrame | str:
     except Exception as e:
         return f"❌ 查詢失敗: {e}"
 
-# --- Offline-friendly Map (PNG) ---
+# --- Map (PNG via kaleido) ---
 def create_and_save_map(df: pd.DataFrame) -> str:
-    # scatter_geo → renders via kaleido without external tiles
     fig = px.scatter_geo(
         df,
         lat="latitude",
@@ -164,14 +166,14 @@ def create_and_save_map(df: pd.DataFrame) -> str:
         countrycolor="#aaa",
     )
     filename = f"map_{uuid.uuid4().hex}.png"
-    filepath = os.path.join("static", filename)
-    # Requires `kaleido` in requirements.txt
-    fig.write_image(filepath, scale=2, width=900, height=600)
+    filepath = os.path.join(STATIC_DIR, filename)
+    fig.write_image(filepath, scale=2, width=900, height=600)  # needs kaleido
     return filename
 
 def _base_url_for_images() -> str:
     if HF_SPACE_URL:
         return HF_SPACE_URL.rstrip("/")
+    # request.url_root includes trailing slash; safe if running behind proxy
     return request.url_root.rstrip("/")
 
 # --- LINE Webhook ---
@@ -270,5 +272,5 @@ def handle_message(event):
             )
             return
 
-        # No-op on unmatched text (keeps reply_token free for other handlers)
+        # Unmatched: no-op
         return