import { AppMethod } from '../../definition/metadata';
import { ISetting } from '../../definition/settings';
import { ISettingUpdateContext } from '../../definition/settings/ISettingUpdateContext';
import { AppManager } from '../AppManager';
import { Utilities } from '../misc/Utilities';

export class AppSettingsManager {
    constructor(private manager: AppManager) { }

    public getAppSettings(appId: string): { [key: string]: ISetting } {
        const rl = this.manager.getOneById(appId);

        if (!rl) {
            throw new Error('No App found by the provided id.');
        }

        return Utilities.deepCloneAndFreeze(rl.getStorageItem().settings);
    }

    public getAppSetting(appId: string, settingId: string): ISetting {
        const settings = this.getAppSettings(appId);

        if (!settings[settingId]) {
            throw new Error('No setting found for the App by the provided id.');
        }

        return Utilities.deepCloneAndFreeze(settings[settingId]);
    }

    public async updateAppSetting(appId: string, setting: ISetting): Promise<void> {
        const rl = this.manager.getOneById(appId);

        if (!rl) {
            throw new Error('No App found by the provided id.');
        }

        const oldSetting = rl.getStorageItem().settings[setting.id];
        if (!oldSetting) {
            throw new Error('No setting found for the App by the provided id.');
        }

        const configModify = this.manager.getAccessorManager().getConfigurationModify(rl.getID());
        const reader = this.manager.getAccessorManager().getReader(rl.getID());
        const http = this.manager.getAccessorManager().getHttp(rl.getID());
        const decoratedSetting = (await rl.call(
            AppMethod.ON_PRE_SETTING_UPDATE,
            { oldSetting, newSetting: setting } as ISettingUpdateContext, configModify, reader, http,
        )) || setting;

        decoratedSetting.updatedAt = new Date();
        rl.getStorageItem().settings[decoratedSetting.id] = decoratedSetting;

        const item = await this.manager.getStorage().update(rl.getStorageItem());

        rl.setStorageItem(item);

        this.manager.getBridges().getAppDetailChangesBridge().doOnAppSettingsChange(appId, decoratedSetting);

        await rl.call(AppMethod.ONSETTINGUPDATED, decoratedSetting, configModify, reader, http);
    }
}