import builtins from "npm:builtin-modules";
import { build } from "npm:vite";
import deno from "npm:@deno/vite-plugin";
import banner from "npm:vite-plugin-banner";
import { resolve } from "jsr:@std/path";
import { wait } from "jsr:@denosaurs/wait";

interface BuildArgs {
  production?: boolean;
  watch?: boolean;
  pluginDir?: string;
}

const bannerContent = `/*
* THIS IS A GENERATED/BUNDLED FILE BY VITE
* if you want to view the source, please visit the github repository of this plugin
*/
`;

export async function buildPlugin(args: BuildArgs) {
  const spinner = wait("Building plugin TypeScript").start();
  const cwd = args.pluginDir ? resolve(Deno.cwd(), args.pluginDir) : Deno.cwd();

  await build({
    root: cwd,
    plugins: [deno(), banner(bannerContent)],
    logLevel: "error",
    build: {
      watch: args.watch ? {} : undefined,
      lib: {
        entry: resolve(cwd, "main.ts"),
        name: "main",
        fileName: () => "main.js",
        formats: ["cjs"],
      },
      minify: args.production || false,
      sourcemap: args.production ? "inline" : false,
      cssCodeSplit: false,
      emptyOutDir: false,
      outDir: ".",
      rollupOptions: {
        input: {
          main: resolve(cwd, "main.ts"),
        },
        output: {
          entryFileNames: "main.js",
          assetFileNames: "styles.css",
        },
        external: [
          "obsidian",
          "electron",
          "@codemirror/autocomplete",
          "@codemirror/collab",
          "@codemirror/commands",
          "@codemirror/language",
          "@codemirror/lint",
          "@codemirror/search",
          "@codemirror/state",
          "@codemirror/view",
          "@lezer/common",
          "@lezer/highlight",
          "@lezer/lr",
          ...builtins,
        ],
      },
    },
  });

  spinner.succeed("Build successful");
}