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

const watchIgnored = [
  "**/node_modules/**",
  "**/dist/**",
  "**/output/**",
  "**/.playwright-cli/**",
  "**/playwright-report/**",
  "**/test-results/**",
];

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), "");
  // 本地默认优先对齐 Docker 开发栈：backend 暴露在 8001 -> 容器内 8000。
  // 若开发者直跑后端，可通过 VITE_DEV_API_PROXY_TARGET 覆盖回 8000。
  const proxyTarget = env.VITE_DEV_API_PROXY_TARGET || "http://127.0.0.1:8001";
  const usePolling = String(env.CHOKIDAR_USEPOLLING || "false").toLowerCase() === "true";

  return {
    plugins: [react()],
    build: {
      rollupOptions: {
        output: {
          manualChunks(id) {
            const normalizedId = id.split(path.sep).join("/");

            if (
              normalizedId.includes("/node_modules/react/") ||
              normalizedId.includes("/node_modules/react-dom/") ||
              normalizedId.includes("/node_modules/react-router-dom/") ||
              normalizedId.includes("/node_modules/@remix-run/router/")
            ) {
              return "framework";
            }

            if (
              normalizedId.includes("/node_modules/@tanstack/react-query/") ||
              normalizedId.includes("/node_modules/zustand/") ||
              normalizedId.includes("/node_modules/axios/")
            ) {
              return "state-query";
            }

            if (normalizedId.includes("/node_modules/@radix-ui/")) {
              return "ui-radix";
            }

            if (normalizedId.includes("/node_modules/lucide-react/")) {
              return "icons";
            }

            if (normalizedId.includes("/node_modules/recharts/")) {
              return "charts";
            }

            if (
              normalizedId.includes("/node_modules/react-markdown/") ||
              normalizedId.includes("/node_modules/remark-gfm/") ||
              normalizedId.includes("/node_modules/remark-breaks/")
            ) {
              return "markdown";
            }

            return undefined;
          },
        },
      },
    },
    test: {
      environment: "jsdom",
      setupFiles: "./vitest.setup.ts",
      globals: false,
    },
    resolve: {
      alias: {
        "@": path.resolve(__dirname, "./src"),
      },
    },
    server: {
      port: 5174,
      allowedHosts: true,
      watch: {
        ignored: watchIgnored,
        ...(usePolling
          ? {
              usePolling: true,
              interval: 250,
            }
          : {}),
      },
      proxy: {
        "/api": {
          target: proxyTarget,
          changeOrigin: true,
          rewrite: (path) => path.replace(/^\/api/, ""),
        },
      },
    },
  };
});