import { injectable, inject } from 'tsyringe';
import ScrollPresenter from '../presenters/ScrollPresenter';
import MarkClient from '../client/MarkClient';
import MarkRepository from '../repositories/MarkRepository';
import SettingRepository from '../repositories/SettingRepository';
import ConsoleClient from '../client/ConsoleClient';

@injectable()
export default class MarkUseCase {
  constructor(
    @inject('ScrollPresenter') private scrollPresenter: ScrollPresenter,
    @inject('MarkClient') private client: MarkClient,
    @inject('MarkRepository') private repository: MarkRepository,
    @inject('SettingRepository') private settingRepository: SettingRepository,
    @inject('ConsoleClient') private consoleClient: ConsoleClient,
  ) {
  }

  async set(key: string): Promise<void> {
    const pos = this.scrollPresenter.getScroll();
    if (this.globalKey(key)) {
      this.client.setGloablMark(key, pos);
      await this.consoleClient.info(`Set global mark to '${key}'`);
    } else {
      this.repository.set(key, pos);
      await this.consoleClient.info(`Set local mark to '${key}'`);
    }
  }

  async jump(key: string): Promise<void> {
    if (this.globalKey(key)) {
      await this.client.jumpGlobalMark(key);
    } else {
      const pos = this.repository.get(key);
      if (!pos) {
        throw new Error('Mark is not set');
      }
      this.scroll(pos.x, pos.y);
    }
  }

  scroll(x: number, y: number): void {
    const smooth = this.settingRepository.get().properties.smoothscroll;
    this.scrollPresenter.scrollTo(x, y, smooth);
  }

  private globalKey(key: string) {
    return (/^[A-Z0-9]$/).test(key);
  }
}