import react from "@vitejs/plugin-react";
import { defineConfig } from "vite";

const buildOutDir =
  process.env.DEVFRONT_BUILD_OUT_DIR ?? "/tmp/baron-sso-devfront-dist";

const defaultAllowedHosts = [
  "sdev.hmac.kr",
  "localhost",
  "172.16.10.176",
  "127.0.0.1",
];

function hostFromUrl(value: string | undefined) {
  if (!value) return undefined;
  try {
    return new URL(value).hostname;
  } catch {
    return value;
  }
}

const allowedHosts = Array.from(
  new Set(
    [
      ...defaultAllowedHosts,
      hostFromUrl(process.env.DEVFRONT_URL),
      ...(process.env.DEVFRONT_ALLOWED_HOSTS ?? "")
        .split(",")
        .map((host) => host.trim())
        .filter(Boolean),
    ].filter((host): host is string => Boolean(host)),
  ),
);

export default defineConfig({
  plugins: [react()],
  cacheDir:
    process.env.DEVFRONT_VITE_CACHE_DIR ?? "/tmp/baron-sso-devfront-vite-cache",
  build: {
    outDir: buildOutDir,
    emptyOutDir: true,
  },
  server: {
    host: "127.0.0.1",
    allowedHosts,
    proxy: {
      "/api": {
        target: process.env.API_PROXY_TARGET || "http://localhost:3000",
        changeOrigin: true,
      },
    },
  },
  preview: {
    host: "127.0.0.1",
    port: 5173,
    allowedHosts,
    proxy: {
      "/api": {
        target: process.env.API_PROXY_TARGET || "http://localhost:3000",
        changeOrigin: true,
      },
    },
  },
});