import Database from '../Database';

const Realm = require('realm');
let realm = new Realm(Database);

class CommonModel {
  constructor() {
    this.schema = 'Common';
  }

  add(data) {
    realm.write(() => {
      if (data.id === undefined) {
        let id: any = realm.objects(this.schema).max('id');
        data.id = id === undefined ? 1 : id + 1;
      }
      try {
        realm.create(this.schema, data, 'never');
      } catch (e) {
        console.log('db common add', e);
      }
    });
  }

  update(data) {
    let tmp = this.get(data.key);
    if (tmp === undefined) {
      this.add(data);
    } else {
      if (data.id === undefined) {
        data.id = tmp.id;
      }
      realm.write(() => {
        realm.create(this.schema, data, 'modified');
      });
    }
  }

  get(key) {
    let tmp = realm.objects(this.schema);
    if (tmp.length === 0) {
      return false;
    } else {
      tmp = tmp.filtered('key = "' + key + '"')[0];
    }
    return tmp;
  }

  getAll() {
    let tmp = realm.objects(this.schema);
    return tmp;
  }

  delete(key) {
    const tmp = this.get(key);
    if (typeof tmp === 'object') {
      realm.write(() => {
        realm.delete(tmp);
      });
    }
  }
}

export default new CommonModel();