import { join } from 'node:path';

import { build } from 'vite';

import { writeSubmodulePackageJson } from './package-json.ts';

import { getLoaderJsonString, minifyClientScript } from './submodule-qwikloader.ts';

import { type BuildConfig, ensureDir, fileSize, readFile, writeFile } from './util.ts';

const EXECUTORS = [

['QWIK_BACKPATCH_EXECUTOR', 'backpatch-executor'],

['QWIK_OUT_OF_ORDER_EXECUTOR', 'out-of-order-executor'],

['QWIK_ERROR_SWAP_EXECUTOR', 'error-swap-executor'],

] as const;

/** Builds and minifies executor javascript files. This is based off of the qwikloader */

export async function submoduleBackpatch(config: BuildConfig) {

for (const [, name] of EXECUTORS) {

await buildExecutor(config, name);

}

await generateBackpatchSubmodule(config);

}

async function buildExecutor(config: BuildConfig, name: string) {

const debugFile = `${name}.debug.js`;

const minifiedFile = `${name}.js`;

await build({

clearScreen: false,

build: {

emptyOutDir: false,

copyPublicDir: false,

target: 'es2018',

lib: {

entry: join(config.srcQwikDir, `${name}.ts`),

formats: ['es'],

fileName: () => debugFile,

},

minify: false,

outDir: config.distQwikPkgDir,

},

});

const debugFilePath = join(config.distQwikPkgDir, debugFile);

const debugContent = await readFile(debugFilePath, 'utf-8');

const minifyResult = await minifyClientScript(debugContent);

const minifiedFilePath = join(config.distQwikPkgDir, minifiedFile);

await writeFile(minifiedFilePath, minifyResult.code || '');

const size = await fileSize(minifiedFilePath);

console.log(`-> ${name}:`, size);

}

export async function inlineBackpatchScriptsEsBuild(config: BuildConfig) {

const define: { [varName: string]: string } = {};

for (const [globalName, name] of EXECUTORS) {

define[`globalThis.${globalName}_MINIFIED`] = await getLoaderJsonString(config, `${name}.js`);

define[`globalThis.${globalName}_DEBUG`] = await getLoaderJsonString(

config,

`${name}.debug.js`

);

}

return define;

}

export async function generateBackpatchSubmodule(config: BuildConfig) {

const backpatchDistDir = join(config.distQwikPkgDir, 'backpatch');

const code = [

`const QWIK_BACKPATCH_EXECUTOR_MINIFIED = ${await getLoaderJsonString(config, 'backpatch-executor.js')};`,

`const QWIK_BACKPATCH_EXECUTOR_DEBUG = ${await getLoaderJsonString(config, 'backpatch-executor.debug.js')};`,

`globalThis.QWIK_BACKPATCH_EXECUTOR_MINIFIED = QWIK_BACKPATCH_EXECUTOR_MINIFIED;`,

`globalThis.QWIK_BACKPATCH_EXECUTOR_DEBUG = QWIK_BACKPATCH_EXECUTOR_DEBUG;`,

];

const esmCode = [

...code,

`export { QWIK_BACKPATCH_EXECUTOR_MINIFIED, QWIK_BACKPATCH_EXECUTOR_DEBUG };`,

];

const dtsCode = [

`export declare const QWIK_BACKPATCH_EXECUTOR_MINIFIED: string;`,

`export declare const QWIK_BACKPATCH_EXECUTOR_DEBUG: string;`,

];

ensureDir(backpatchDistDir);

await writeFile(join(backpatchDistDir, 'index.mjs'), esmCode.join('\n') + '\n');

await writeFile(join(backpatchDistDir, 'index.d.ts'), dtsCode.join('\n') + '\n');

await writeSubmodulePackageJson(backpatchDistDir, '@qwik.dev/core/backpatch', config.distVersion);

}