const fs = require('node:fs');
const vm = require('node:vm');
const ts = require('typescript');

function loadMembers(file, names, globals = {}) {
    const source = ts.createSourceFile(file, fs.readFileSync(file, 'utf8'), ts.ScriptTarget.Latest, true);
    const declaration = source.statements.find(ts.isClassDeclaration);
    const available = declaration ? declaration.members : source.statements.filter(ts.isVariableStatement)
        .flatMap(statement => statement.declarationList.declarations)
        .find(node => node.name.getText(source) === 'GameTool').initializer.properties;
    const members = names.map(name => {
        const member = available.find(node => node.name && node.name.getText(source) === name);
        if (!member) throw new Error(`${file}: missing ${name}`);
        return member.getText(source);
    });
    return vm.runInNewContext(ts.transpileModule(`class Controller { ${members.join('\n')} }\nController;`, {
        compilerOptions: { target: ts.ScriptTarget.ES2017 },
    }).outputText, globals);
}

const Config = loadMembers('assets/Script/module/Config/GameConfig.ts', [
    'isNewPlayerB', 'getLevelConfigPath', 'getPropUnlockLevel', 'getFeatureUnlockLevel',
    'isWinStreakUnlocked', 'shouldShowWinStreakGuide', 'canSettleCareer', 'defaultNewLevel', 'newPlayerNewLevel',
    'defaultNewGuide', 'NEW_LEVEL', 'NEW_GUIDE',
]);
function withNewPlayerConfig(config) {
    for (const name of Object.getOwnPropertyNames(Config)) {
        if (['length', 'name', 'prototype'].includes(name)) continue;
        Object.defineProperty(config, name, Object.getOwnPropertyDescriptor(Config, name));
    }
    return config;
}

const ServerUtils = loadMembers('server/laf-cloud/functions/Utils.ts', ['checkToken']);
function loadModule(file, deps = {}, globals = {}) {
    const exports = {};
    const code = ts.transpileModule(fs.readFileSync(file, 'utf8'), {
        compilerOptions: { target: ts.ScriptTarget.ES2020, module: ts.ModuleKind.CommonJS },
    }).outputText;
    vm.runInNewContext(code, { exports, require: name => {
        if (!(name in deps)) throw new Error(`${file}: missing dependency ${name}`);
        return deps[name];
    }, Date, console, ...globals });
    return exports;
}
module.exports = { loadMembers, withNewPlayerConfig, ServerUtils, loadModule };