import esbuild from "esbuild";
import { transform as svgrTransform } from "@svgr/core";
import jsxPlugin from "@svgr/plugin-jsx";
import { readFile } from "node:fs/promises";
import process from "process";
import { createRequire } from "module";
import wasmPlugin from "./wasmPlugin.mjs";
import nodeModuleShim from "./nodeModuleShim.mjs";

// Inline SVGR plugin: each `import Foo from "./foo.svg"` resolves to a React
// component (`React.FC<SVGProps<SVGSVGElement>>`) instead of a raw string.
// Source SVGs use `fill="currentColor"`, so theme color follows automatically.
const svgrPlugin = {
  name: "svgr",
  setup(build) {
    build.onLoad({ filter: /\.svg$/ }, async (args) => {
      const svg = await readFile(args.path, "utf8");
      const contents = await svgrTransform(
        svg,
        { jsxRuntime: "classic", typescript: false, plugins: [jsxPlugin] },
        { filePath: args.path, caller: { name: "esbuild-plugin-inline-svgr" } }
      );
      return { contents, loader: "jsx" };
    });
  },
};

// CommonJS plugin loaded via createRequire — pure JS, no ESM export needed.
const patchRendererUnsafeUnref = createRequire(import.meta.url)(
  "./scripts/patchRendererUnsafeUnref.js"
);

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

// Polyfill for import.meta in CommonJS context
if (typeof import_meta === 'undefined') {
  var import_meta = {
    url: typeof __filename !== 'undefined' ? 'file://' + __filename : 'file:///obsidian-plugin'
  };
}
`;

const prod = process.argv[2] === "production";

const context = await esbuild.context({
  banner: {
    js: banner,
  },
  entryPoints: ["src/main.ts"],
  bundle: true,
  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",
    // Node.js built-in modules (available in Electron) - except `module` /
    // `node:module` which we shim. Both prefixed (`node:foo`) and bare
    // (`foo`) forms are listed because @anthropic-ai/claude-agent-sdk and
    // its transitive deps mix the two styles.
    "node:fs",
    "node:fs/promises",
    "node:path",
    "node:os",
    "node:url",
    "node:buffer",
    "node:stream",
    "node:crypto",
    "node:events",
    "node:async_hooks",
    "node:child_process",
    "node:http",
    "node:https",
    "node:util",
    "node:readline",
    "node:process",
    "async_hooks",
    "child_process",
    "crypto",
    "events",
    "fs",
    "fs/promises",
    "os",
    "path",
    "process",
    "readline",
    "url",
    "util",
  ],
  format: "cjs",
  target: "es2020",
  logLevel: "info",
  sourcemap: prod ? false : "inline",
  treeShaking: true,
  outfile: "main.js",
  plugins: [nodeModuleShim, svgrPlugin, wasmPlugin, patchRendererUnsafeUnref],
  define: {
    global: "window",
    "process.env.NODE_ENV": prod ? '"production"' : '"development"',
    "import.meta.url": "import_meta.url",
  },
  minify: prod,
});

if (prod) {
  await context.rebuild();
  process.exit(0);
} else {
  await context.watch();
}
