import { defineConfig, type Plugin } from "vite";
import react from "@vitejs/plugin-react";
import { mkdirSync, readFileSync, writeFileSync } from "node:fs";
import path from "node:path";

const host = process.env.TAURI_DEV_HOST;

function buildId() {
  // YYYYMMDD.HHmmss: 每次构建生成新的 BUILD_ID, 用于 OTA/web 升级比对
  const d = new Date();
  const pad = (n: number) => String(n).padStart(2, "0");
  return (
    [d.getFullYear(), pad(d.getMonth() + 1), pad(d.getDate())].join("") +
    "." +
    [pad(d.getHours()), pad(d.getMinutes()), pad(d.getSeconds())].join("")
  );
}

export default defineConfig(async () => {
  const pkg = JSON.parse(readFileSync(new URL("./package.json", import.meta.url), "utf8"));

  // 构建完成后把 BUILD_ID 写进 dist/.build-id, 供 server 的 /api/ota/manifest-web
  // 返回"当前部署版本"的 build_id, 让 web 端升级提示只在真是新部署时出现
  const writeBuildId: Plugin = {
    name: "wardrobe:write-build-id",
    closeBundle() {
      const dir = path.resolve(process.cwd(), "dist");
      mkdirSync(dir, { recursive: true });
      writeFileSync(path.join(dir, ".build-id"), buildId(), "utf8");
    },
  };

  return {
    plugins: [react(), writeBuildId],
    clearScreen: false,
    server: {
      port: 1420,
      strictPort: true,
      host: host || false,
      hmr: host ? { protocol: "ws", host, port: 1421 } : undefined,
      watch: {
        ignored: ["**/src-tauri/**"],
      },
    },
    // 编译期常量: 版本 + 构建号, 供 src/version.ts 使用
    define: {
      __BUILD_ID__: JSON.stringify(buildId()),
      __APP_VERSION__: JSON.stringify(pkg.version || "0.0.0"),
    },
  };
});