import { Service, Inject } from 'typedi';
import winston from 'winston';
import { CrontabView, CrontabViewModel } from '../data/cronView';

@Service()
export default class CronViewService {
  constructor(@Inject('logger') private logger: winston.Logger) {}

  public async create(payload: CrontabView): Promise<CrontabView> {
    const tab = new CrontabView(payload);
    const doc = await this.insert(tab);
    return doc;
  }

  public async insert(payload: CrontabView): Promise<CrontabView> {
    return await CrontabViewModel.create(payload, { returning: true });
  }

  public async update(payload: CrontabView): Promise<CrontabView> {
    const newDoc = await this.updateDb(payload);
    return newDoc;
  }

  public async updateDb(payload: CrontabView): Promise<CrontabView> {
    await CrontabViewModel.update(payload, { where: { id: payload.id } });
    return await this.getDb({ id: payload.id });
  }

  public async remove(ids: number[]) {
    await CrontabViewModel.destroy({ where: { id: ids } });
  }

  public async list(): Promise<CrontabView[]> {
    try {
      const result = await CrontabViewModel.findAll({});
      return result;
    } catch (error) {
      throw error;
    }
  }

  public async getDb(query: any): Promise<CrontabView> {
    const doc: any = await CrontabViewModel.findOne({ where: { ...query } });
    return doc && (doc.get({ plain: true }) as CrontabView);
  }

  public async disabled(ids: number[]) {
    await CrontabViewModel.update({ isDisabled: 1 }, { where: { id: ids } });
  }

  public async enabled(ids: number[]) {
    await CrontabViewModel.update({ isDisabled: 0 }, { where: { id: ids } });
  }

  public async move({
    id,
    fromIndex,
    toIndex,
  }: {
    fromIndex: number;
    toIndex: number;
    id: number;
  }): Promise<CrontabView> {
    let targetPosition: number;
    const isUpward = fromIndex > toIndex;
    const views = await this.list();
    if (toIndex === 0 || toIndex === views.length - 1) {
      targetPosition = isUpward
        ? views[0].position * 2
        : views[toIndex].position / 2;
    } else {
      targetPosition = isUpward
        ? (views[toIndex].position + views[toIndex - 1].position) / 2
        : (views[toIndex].position + views[toIndex + 1].position) / 2;
    }
    const newDoc = await this.update({
      id,
      position: targetPosition,
    });
    return newDoc;
  }
}