import { defineConfig } from "vite";
import vue from "@vitejs/plugin-vue";
import vueJsx from "@vitejs/plugin-vue-jsx";
import legacy from "@vitejs/plugin-legacy";
import dts from "vite-plugin-dts";
import VueDevTools from "vite-plugin-vue-devtools";
import { resolve } from "path";

export default defineConfig(({ command, mode }) => {
  const isLibBuild = process.env.BUILD_LIB === "true";

  return {
    envPrefix: ["VITE_", "VUE_"],
    define: {
      "process.env": "import.meta.env",
    },
    plugins: [
      vue(),
      vueJsx(),
      // Vue DevTools for debugging (only in non-lib builds)
      !isLibBuild && VueDevTools(),
      // Only use legacy plugin for app builds, not library builds
      !isLibBuild &&
        legacy({
          targets: ["defaults", "not IE 11"],
        }),
      // Generate TypeScript declaration files for library builds
      isLibBuild &&
        dts({
          include: ["**/*.ts", "**/*.vue"],
          exclude: ["node_modules", "dist", "dist-examples", "examples"],
          outDir: "dist",
          staticImport: true,
          insertTypesEntry: true,
          rollupTypes: false,
        }),
    ].filter(Boolean),
    build: isLibBuild
      ? {
          // Library build configuration
          sourcemap: true,
          lib: {
            entry: {
              index: resolve(__dirname, "index.ts"),
              "packages/index": resolve(__dirname, "packages/index.ts"),
              "packages/base/index": resolve(__dirname, "packages/base/index.ts"),
              "packages/tool/index": resolve(__dirname, "packages/tool/index.ts"),
              "packages/manage/index": resolve(__dirname, "packages/manage/index.ts"),
              "plugs/index": resolve(__dirname, "plugs/index.ts"),
              "plugs/composables/index": resolve(__dirname, "plugs/composables/index.ts"),
              "plugs/api/index": resolve(__dirname, "plugs/api/index.ts"),
              "plugs/http/index": resolve(__dirname, "plugs/http/index.ts"),
              "plugs/i18n/index": resolve(__dirname, "plugs/i18n/index.ts"),
              "plugs/config/index": resolve(__dirname, "plugs/config/index.ts"),
              "plugs/element/index": resolve(__dirname, "plugs/element/index.ts"),
              "plugs/store/index": resolve(__dirname, "plugs/store/index.ts"),
              "plugs/util/index": resolve(__dirname, "plugs/util/index.ts"),
              "plugs/websocket": resolve(__dirname, "plugs/websocket.ts"),
            },
            formats: ["es"],
          },
          rollupOptions: {
            external: [
              "vue",
              "vue-router",
              "vuex",
              "vue3-i18n",
              "element-plus",
              "axios",
              "dayjs",
              "xterm",
              "xterm-addon-attach",
              "xterm-addon-fit",
              "noob-mengyxu",
              /^noob-mengyxu\//,
            ],
            output: {
              assetFileNames: "assets/[name][extname]",
              entryFileNames: "[name].js",
            },
          },
        }
      : {
          // App build configuration (for examples)
          outDir: "dist-examples",
        },
    resolve: {
      alias: {
        "@": resolve(__dirname, "examples"),
        "noob-mengyxu": resolve(__dirname, "index.ts"),
      },
    },
  };
});