/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

const path = require('path');
const fs = require('fs');
const {execSync} = require('child_process');
const dependentHasExifReaderConfig = require('./findDependentConfig');

const EXIFREADER_ROOT_DIR = path.join(__dirname, '..');
process.chdir(EXIFREADER_ROOT_DIR);

if (!process.argv.includes('--only-with-config') || checkConfig()) {
    execSync(`npx -p ${getPackage('webpack-cli')} -p ${getPackage('webpack')} webpack`, {stdio: 'inherit'});
}

function checkConfig() {
    if (dependentHasExifReaderConfig()) {
        console.log('Installing ExifReader custom build dependencies...'); // eslint-disable-line no-console
        const packages = [
            '@babel/core',
            '@babel/preset-env',
            '@babel/register',
            'babel-loader',
            'cross-env',
            'string-replace-loader',
            'terser-webpack-plugin'
        ].map((_package) => getPackage(_package));
        const tmpDir = path.join(EXIFREADER_ROOT_DIR, '__tmp');
        try {
            initTmpDir(tmpDir);
            execSync(`npm install --production --loglevel=error --no-optional --no-package-lock --no-save ${packages.join(' ')}`, {stdio: 'inherit'});
            console.log('Done.'); // eslint-disable-line no-console
        } catch (error) {
            console.error('Could not install requirements for a custom build:', error); // eslint-disable-line no-console
        } finally {
            cleanUpTmpDir(tmpDir);
        }
        return true;
    }
    return false;
}

function getPackage(name) {
    const version = require(path.join(EXIFREADER_ROOT_DIR, 'package.json')).devDependencies[name].replace(/^\^/, '');
    return `${name}@${version}`;
}

function initTmpDir(tmpDir) {
    const nodeModulesDir = path.join(EXIFREADER_ROOT_DIR, 'node_modules');
    fs.mkdirSync(tmpDir, {recursive: true});
    if (fs.existsSync(nodeModulesDir)) {
        fs.renameSync(nodeModulesDir, path.join(tmpDir, 'node_modules'));
    }
    process.chdir(tmpDir);
    execSync('npm init -y', {stdio: 'inherit'});
}

function cleanUpTmpDir(tmpDir) {
    const nodeModulesDir = path.join(tmpDir, 'node_modules');
    if (fs.existsSync(nodeModulesDir)) {
        fs.renameSync(nodeModulesDir, path.join(EXIFREADER_ROOT_DIR, 'node_modules'));
    }
    process.chdir(EXIFREADER_ROOT_DIR);
    fs.rmSync(tmpDir, {recursive: true, force: true});
}