#!/bin/sh

# 优先使用环境变量 API_TARGET，否则从构建时提取的文件读取 VITE_BASE_API
API_TARGET=${API_TARGET:-""}

if [ -z "$API_TARGET" ] && [ -f /etc/nginx/.api_target ]; then
  API_TARGET=$(cat /etc/nginx/.api_target | tr -d '\r')
fi

CONF_FILE="/etc/nginx/conf.d/default.conf"

if [ -n "$API_TARGET" ]; then
  # 提取路径部分（去掉协议和域名）
  API_NO_PROTO=$(echo "$API_TARGET" | sed 's|^https\?://||')
  API_PATH=$(echo "$API_NO_PROTO" | sed 's|^[^/]*||')

  # 如果路径为空，默认 /api
  if [ -z "$API_PATH" ] || [ "$API_PATH" = "/" ]; then
    API_PATH="/api"
  fi

  # 确保 proxy_pass 末尾有 /
  API_TARGET_SLASH="${API_TARGET%/}/"

  # 替换 nginx 配置占位符
  sed -i "s|@@API_LOCATION@@|${API_PATH}/|g" "$CONF_FILE"
  sed -i "s|@@API_TARGET@@|${API_TARGET_SLASH}|g" "$CONF_FILE"
else
  # 没有 API 目标，移除代理配置块
  sed -i '/# BEGIN_API_PROXY/,/# END_API_PROXY/d' "$CONF_FILE"
fi

nginx -g "daemon off;"