import fs from 'node:fs';
import path from 'node:path';
import type { BuildOptions } from 'esbuild';
import * as esbuild from 'esbuild';
import { createDynamicImportPlugin } from './createDynamicImportPlugin';
import { createExcludeVendorSourceMapPlugin } from './createExcludeVendorSourceMapPlugin';
import { createTscPlugin } from './createTscPlugin';

export async function bundle(server: string, opts?: BuildOptions | ((o: BuildOptions) => BuildOptions | undefined)) {
	let entry: string | undefined;
	let out: string | undefined;
	let name = server;
	if (server.includes(':')) {
		[name, entry, out] = server.split(':');
	} else {
		const candidates = [server, `./src/apps/${server}/main.bun.ts`, `./src/apps/${server}/main.ts`];
		entry = candidates.find((v) => {
			try {
				fs.statSync(v);
				return true;
			} catch (_e) {}
			return false;
		});
		if (!entry) {
			throw new Error(`No entry for ${server}`);
		}
	}

	if (name.includes('/')) {
		name = path.basename(entry);
		name = name.replace(/main(\.bun)?\.[tj]s/, '');
		if (!name) {
			name = entry.split('/').at(-2) || '';
		}
		name ||= 'server';
	}
	if (!out) {
		out = `dist/apps/${name}/main.mjs`;
	}
	let options: BuildOptions = {
		//entryPoints: [`./dist/out/apps/${server}/main.js`], // for swc handle decorator
		entryPoints: [entry],
		bundle: true,
		logLevel: 'info',
		banner: {
			js: `
var require,__filename,__dirname;
{
  const {createRequire} = await import('node:module');
  require ||= createRequire(import.meta.url);
}
{
  const {fileURLToPath} = await import('node:url');
  const {dirname} = await import('node:path');
  __filename ||= fileURLToPath(import.meta.url); 
  __dirname ||= dirname(__filename)
};
`,
		},
		define: { NODE_ENV: JSON.stringify(`production`), __DEV__: JSON.stringify(false) },
		keepNames: true,
		minifySyntax: true,
		outfile: out,
		format: 'esm',
		platform: 'node',
		charset: 'utf8',
		target: 'node20',
		sourcemap: true,
		// 如果只需要 stack trace 则不需要 sourcesContent
		// https://esbuild.github.io/api/#sources-content
		sourcesContent: false,
		legalComments: 'external',
		// https://mikro-orm.io/docs/next/deployment#excluding-dependencies-from-esbuild
		// 支持 @nestjs/* 写法，但是需要 app 预先安装
		external: [
			// 'ws', // this is pure js, c++ addon bufferutil utf-8-validate
			'jsdom',
			'canvas',
			'bcrypt',
			'sharp',
			// opt in
			// '@nestjs/platform-express',
			// '@nestjs/microservices',
			// '@nestjs/websockets',
			// '@fastify/view',
			// 'ts-morph',
			// SQL Driver Module
			// https://mikro-orm.io/docs/next/deployment#excluding-dependencies-from-esbuild
			// 没有用到的依赖，以前版本会都依赖进来，但依赖可能不存在
			// '@mikro-orm/mongodb',
			// '@mikro-orm/sqlite',
			// '@mikro-orm/better-sqlite',
			// '@mikro-orm/mariadb',
			// '@mikro-orm/entity-generator',
			// '@mikro-orm/migrations',
			// '@mikro-orm/seeder',
			// SQL Driver
			'@vscode/sqlite3',
			'sqlite3',
			'better-sqlite3',
			'libsql',
			'mysql2',
			'mysql',
			'oracledb',
			'tedious',
			'pg-native',
			'pg-query-stream',
			// binary
			'fsevents',
			// 有问题
			'class-transformer',
		],
		plugins: [
			createExcludeVendorSourceMapPlugin({ filter: /node_modules/ }),
			// https://github.com/RTVision/esbuild-dynamic-import/blob/master/src/index.ts
			// 本来只支持 default，改成了 import * as _DynamicImportModule
			createDynamicImportPlugin({ transformExtensions: ['.js'] }),
			createTscPlugin(),
		],
	};
	if (typeof opts === 'function') {
		options = opts(options) || options;
	} else if (opts) {
		Object.assign(options, opts);
	}
	return await esbuild.build(options);
}