import { existsSync, readFileSync } from "node:fs";
import { homedir } from "node:os";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import { defineConfig, loadEnv, type ServerOptions } from "vite";
import react from "@vitejs/plugin-react";

const rootDir = resolve(dirname(fileURLToPath(import.meta.url)), "..");

function localCerts(): { cert: Buffer; key: Buffer } | undefined {
  const home = homedir();
  for (const dir of [join(home, ".lazyboy", "certs"), join(home, ".grokboy", "certs")]) {
    const cert = join(dir, "server.pem");
    const key = join(dir, "server.key");
    if (existsSync(cert) && existsSync(key)) {
      return { cert: readFileSync(cert), key: readFileSync(key) };
    }
  }
  return undefined;
}

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, rootDir, "");
  const version = (process.env.LAZYBOY_VERSION || env.LAZYBOY_VERSION || "0.1.0").trim() || "0.1.0";
  const https = localCerts();
  const backend = https ? "https://127.0.0.1:8787" : "http://127.0.0.1:8787";
  const server: ServerOptions = {
    port: 5173,
    host: true,
    proxy: {
      "/api": { target: backend, secure: false },
      "/novnc": { target: backend, ws: true, secure: false },
      "/lazyboy-ca.crt": { target: backend, secure: false },
    },
  };
  if (https) server.https = https;
  return {
    plugins: [react()],
    define: {
      "import.meta.env.LAZYBOY_VERSION": JSON.stringify(version),
    },
    server,
    preview: {
      port: 4173,
    },
  };
});