fairnesscoop / permacoop

import { Inject } from '@nestjs/common';

import { IDateUtils } from 'src/Application/IDateUtils';

import { SavingsRecordType, UserSavingsRecord } from './UserSavingsRecord.entity';

type UserSavingsRecordBalanceType = {

  [id: string]: {

    firstName: string;

    lastName: string;

    balance: number;

  }

}

export class GetUserSavingsRecordBalance {

  constructor(

    @Inject('IDateUtils')

    private readonly dateUtils: IDateUtils

  ) {}

  public get(userSavingsRecords: UserSavingsRecord[]): UserSavingsRecordBalanceType {

    let usersBalances: UserSavingsRecordBalanceType = {};

    const currentDate = this.dateUtils.getCurrentDate();

    for (const savingsRecord of userSavingsRecords) {

      const user = savingsRecord.getUser();

      const previousBalance = usersBalances[user.getId()]?.balance || 0;

      let balance = 0;

      if (savingsRecord.getType() === SavingsRecordType.INPUT) {

        //if ()

        balance = previousBalance + savingsRecord.getAmountWithInterestRate();

      } else {

        balance = previousBalance - savingsRecord.getAmount();

      }

      usersBalances = {

        ...usersBalances,

        [user.getId()]: {

          firstName: user.getFirstName(),

          lastName: user.getLastName(),

          balance,

        }

      };

    }

    return usersBalances;

  }

}