// import { getRuntimeEnv } from "@/lib/ipconfig";

// export async function getBaseUrl() {
//   let ip = await getRuntimeEnv("SUPABASE_URL");
//   if (!ip) throw new Error("SUPABASE_URL 获取失败，无法构建 baseUrl");

//   let protocol = "http";
//   if (
//     typeof window !== "undefined" &&
//     window.location &&
//     window.location.protocol === "https:"
//   ) {
//     protocol = "https";
//     ip = window.location.hostname;
//   }

//   return `${protocol}://${ip}`;
// }



// import { getRuntimeEnv } from "@/lib/ipconfig";
// import { headers } from 'next/headers'

// export async function getBaseUrl() {
//   let ip = await getRuntimeEnv("SUPABASE_URL");
//   if (!ip) throw new Error("SUPABASE_URL 获取失败，无法构建 baseUrl");

//   let protocol = "http";
//   let port = 80;

//   if (
//     typeof window !== "undefined" &&
//     window.location &&
//     window.location.protocol === "https:"
//   ) {
//     protocol = "https";
//     ip = window.location.hostname;
//     port = 443;
//   }

//   return `${protocol}://${ip}:${port}`;
// }


import { getRuntimeEnv } from "@/lib/ipconfig";
import { headers } from 'next/headers';

export async function getBaseUrl() {
  let ip = await getRuntimeEnv("SUPABASE_URL");
  if (!ip) throw new Error("SUPABASE_URL 获取失败，无法构建 baseUrl");

  let protocol = "http";
  let port = 80;

  if (typeof window !== "undefined") {
    // ✅ CSR 模式
    if (window.location.protocol === "https:") {
      protocol = "https";
      ip = window.location.hostname;
      port = 443;
    }
  } else {
    // ✅ SSR 模式，补充逻辑
    const hdrs = headers();
    const forwardedProto = hdrs.get("x-forwarded-proto");
    const hostHeader = hdrs.get("host");

    if (forwardedProto) {
      protocol = forwardedProto;
    }

    if (hostHeader) {
      ip = hostHeader;
      if (hostHeader.includes(":")) {
        const parts = hostHeader.split(":");
        ip = parts[0];
        port = parseInt(parts[1]);
      } else {
        port = (protocol === "https") ? 443 : 80;
      }
    }
  }

  return `${protocol}://${ip}:${port}`;
}