import { build, context } from "esbuild";

const watch = process.argv.includes("--watch");

/** @type {import('esbuild').BuildOptions} */
const options = {
  entryPoints: ["src/extension.ts"],
  outfile: "out/extension.cjs",
  bundle: true,
  platform: "node",
  format: "cjs",
  target: "node22",
  sourcemap: true,
  // vscode is provided by the host; @cline/sdk is ESM-only and is loaded at
  // runtime via dynamic import() from node_modules, so keep both external.
  external: ["vscode", "@cline/sdk"],
  logLevel: "info",
};

/** @type {import('esbuild').BuildOptions} */
const liveTurnOptions = {
  entryPoints: ["src/liveTurn.ts"],
  outfile: "out/liveTurn.mjs",
  bundle: true,
  platform: "node",
  format: "esm",
  target: "node22",
  sourcemap: true,
  external: ["vscode", "@cline/sdk"],
  logLevel: "info",
};

/** @type {import('esbuild').BuildOptions} */
const previewMermaidOptions = {
  entryPoints: ["media/preview-mermaid.ts"],
  outfile: "out/media/preview-mermaid.js",
  bundle: true,
  // Task 7 (Q4): contributed via markdown.previewScripts into the BUILT-IN
  // preview's webview (a browser context) — mermaid is bundled IN (and ONLY
  // in) this asset so it never bloats the extension-host bundle (the
  // @cline/sdk size discipline).
  platform: "browser",
  format: "iife",
  target: "es2020",
  sourcemap: true,
  logLevel: "info",
};

if (watch) {
  const ctx = await context(options);
  const ctxLive = await context(liveTurnOptions);
  const ctxPreviewMermaid = await context(previewMermaidOptions);
  await Promise.all([ctx.watch(), ctxLive.watch(), ctxPreviewMermaid.watch()]);
  console.log("esbuild: watching…");
} else {
  await build(options);
  await build(liveTurnOptions);
  await build(previewMermaidOptions);
  console.log(
    "esbuild: build complete → out/extension.cjs + out/liveTurn.mjs + out/media/preview-mermaid.js",
  );
}