#!/bin/bash
set -e

# 鈿狅笍 鍏抽敭锛氫笉缁欓粯璁ゅ€硷紝寮哄埗鍦?SAE 鎺у埗鍙伴厤缃?
# 濡傛灉鏈厤缃紝鎶ラ敊閫€鍑猴紙閬垮厤浣跨敤閿欒鐨勫悗绔湴鍧€锛?
if [ -z "$BACKEND_SERVICE_HOST" ]; then
  echo "鉂?ERROR: BACKEND_SERVICE_HOST environment variable is required!"
  echo "Please configure it in SAE console with backend internal IP (e.g., 172.17.x.x)"
  exit 1
fi

if [ -z "$BACKEND_SERVICE_PORT" ]; then
  echo "鈿狅笍  WARNING: BACKEND_SERVICE_PORT not set, using default: 3001"
  export BACKEND_SERVICE_PORT=3001
fi

echo "============================================"
echo "Starting Frontend Nginx Service"
echo "Backend Service: ${BACKEND_SERVICE_HOST}:${BACKEND_SERVICE_PORT}"
echo "Container Timezone: $(cat /etc/timezone)"
echo "Current Time: $(date)"
echo "============================================"

# 浣跨敤 envsubst 鏇挎崲 Nginx 閰嶇疆涓殑鐜鍙橀噺
envsubst '${BACKEND_SERVICE_HOST} ${BACKEND_SERVICE_PORT}' \
  < /etc/nginx/templates/nginx.conf.template \
  > /etc/nginx/nginx.conf

# 楠岃瘉 Nginx 閰嶇疆
nginx -t

# 鍚姩 Nginx
exec nginx -g 'daemon off;'