import { ModuleLoader } from '@serenity-js/core/lib/io';
import { Config } from 'protractor';

import { TestRunner } from './runners/TestRunner';

export class TestRunnerDetector {

    static protractorCliOptions() {
        return [
            'cucumberOpts',         // todo: alias: cucumber ?
            'jasmineNodeOpts',      // todo: alias: jasmine ?
        ];
    }

    constructor(private readonly loader: ModuleLoader) {
    }

    // todo: when invoking, merge config
    //      Object.assign(
    //          {},
    //          config.cucumberOpts,
    //          config.capabilities.cucumberOpts
    //      )
    runnerFor(config: Config): TestRunner {

        // todo: simplify and introduce a config object with "as(String)", "as(Object)", etc. to avoid issues with undefined
        // todo: and config merge too, using on deepmerge
        if (
            (config.serenity && config.serenity.runner && config.serenity.runner === 'cucumber') ||
            (config.cucumberOpts)
        ) {
            const { CucumberTestRunner } = require('./runners/CucumberTestRunner');
            return new CucumberTestRunner(config.cucumberOpts || {}, this.loader);
        }

        const { JasmineTestRunner } = require('./runners/JasmineTestRunner');
        return new JasmineTestRunner(config.jasmineNodeOpts, this.loader);
    }
}