import DefaultBrowserSettings from './DefaultBrowserSettings.js';
/**
 * Browser settings utility.
 */
export default class BrowserSettingsFactory {
    /**
     * Returns browser settings.
     *
     * @param [settings] Browser settings.
     * @returns Settings.
     */
    static createSettings(settings) {
        if (settings) {
            this.validate(DefaultBrowserSettings, settings);
        }
        return {
            ...DefaultBrowserSettings,
            ...settings,
            navigation: {
                ...DefaultBrowserSettings.navigation,
                ...settings?.navigation
            },
            navigator: {
                ...DefaultBrowserSettings.navigator,
                ...settings?.navigator
            },
            timer: {
                ...DefaultBrowserSettings.timer,
                ...settings?.timer
            },
            fetch: {
                ...DefaultBrowserSettings.fetch,
                ...settings?.fetch
            },
            module: {
                ...DefaultBrowserSettings.module,
                ...settings?.module
            },
            device: {
                ...DefaultBrowserSettings.device,
                ...settings?.device
            },
            debug: {
                ...DefaultBrowserSettings.debug,
                ...settings?.debug
            },
            viewport: {
                ...DefaultBrowserSettings.viewport,
                ...settings?.viewport
            }
        };
    }
    /**
     * Validates settings.
     *
     * @param target Target.
     * @param source Source.
     * @param [parentNamespace] Parent namespace.
     */
    static validate(target, source, parentNamespace) {
        for (const key of Object.keys(source)) {
            if (target[key] === undefined) {
                const namespace = parentNamespace ? parentNamespace + '.' + key : key;
                throw new Error(`Unknown browser setting "${namespace}"`);
            }
            if (typeof target[key] === 'object' && !Array.isArray(target[key]) && target[key] !== null) {
                const namespace = parentNamespace ? parentNamespace + '.' + key : key;
                if (typeof source[key] !== 'object' || Array.isArray(source[key]) || source[key] === null) {
                    throw new Error(`Browser setting "${namespace}" cannot be null`);
                }
                this.validate(target[key], source[key], namespace);
            }
            else {
                if ((typeof target[key] === 'boolean' ||
                    typeof target[key] === 'number' ||
                    typeof target[key] === 'string') &&
                    typeof source[key] !== typeof target[key]) {
                    const isValidPreventTimerLoops = key === 'preventTimerLoops' && typeof source[key] === 'object' && source[key] !== null;
                    if (!isValidPreventTimerLoops) {
                        const namespace = parentNamespace ? parentNamespace + '.' + key : key;
                        throw new Error(`Browser setting "${namespace}" must be of type "${typeof target[key]}"`);
                    }
                }
            }
        }
    }
}
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