import fs from "node:fs";
import path from "node:path";

/**
 * Dependencies that _are not_ bundled along with wrangler
 */
export const EXTERNAL_DEPENDENCIES = [
	// Wrangler depends on a pinned version of esbuild.
	"esbuild",

	// This blows up when bundled, and has WASM dependencies. Wrangler depends on a pinned version.
	"blake3-wasm",

	// Wrangler depends on a pinned version of Miniflare.
	"miniflare",

	// @cloudflare/workers-types is an optional peer dependency of wrangler, so users can
	// get the types by installing the package (to what version they prefer) themselves
	"@cloudflare/workers-types",

	// unenv must be external because it contains unenv/runtime code which needs to be resolved
	// and read when we are bundling the worker application
	"unenv",
	"@cloudflare/unenv-preset",

	// path-to-regexp must be external because it contains runtime code which needs to be resolved
	// and read when we are bundling the worker application.
	// See `templates/pages-template-workers`
	"path-to-regexp",

	// @cloudflare/kv-asset-handler must be external because it contains runtime code which needs to be resolved
	// and read when we are bundling the worker application
	// Pending deletion in v4...
	"@cloudflare/kv-asset-handler",

	// workerd contains a native binary, so must be external. Wrangler depends on a pinned version.
	"workerd",
];

/**
 * Bare-specifier imports that legitimately appear in wrangler's bundled
 * output but should NOT be treated as missing runtime dependencies.
 *
 * Each entry must be justified — typically the import is guarded
 * (try/catch, optional require) inside a bundled-in third-party library that
 * probes for the consumer's environment.
 */
export const IGNORED_DIST_IMPORTS = [
	// @netlify/build-info (bundled devDependency) tries to require these
	// framework packages to detect what the user has installed. Each call
	// is guarded by try/catch and used only for framework detection.
	"@angular/ssr",
	"@cloudflare/vite-plugin",
	"isbot",
	"react-dom",
	"react-router",
	"waku",

	// @aws-sdk/client-s3 (bundled devDependency) optionally uses this native
	// crypto implementation if installed; falls back to a JS implementation
	// when missing.
	"@aws-sdk/signature-v4-crt",
];

const pathToPackageJson = path.resolve(__dirname, "..", "package.json");
const packageJson = fs.readFileSync(pathToPackageJson, { encoding: "utf-8" });
const { dependencies, devDependencies } = JSON.parse(packageJson);

/**
 * Dependencies that _are_ bundled along with wrangler
 */
export const BUNDLED_DEPENDENCIES = Object.keys({
	...dependencies,
	...devDependencies,
}).filter((dep) => !EXTERNAL_DEPENDENCIES.includes(dep));