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import { QueryHandler } from '@nestjs/cqrs'; |
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import { Inject } from '@nestjs/common'; |
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import { GetUsersSavingsRecordsBalanceQuery } from './GetUsersSavingsRecordsBalanceQuery'; |
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import { IUserSavingsRecordRepository } from 'src/Domain/HumanResource/Savings/Repository/IUserSavingsRecordRepository'; |
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import { UserSavingsRecordsBalanceView } from '../View/UserSavingsRecordsBalanceView'; |
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import { SavingsRecordType } from 'src/Domain/HumanResource/Savings/UserSavingsRecord.entity'; |
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type UserBalance = { |
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firstName: string; |
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lastName: string; |
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balance: number; |
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} |
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@QueryHandler(GetUsersSavingsRecordsBalanceQuery) |
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export class GetUsersSavingsRecordsBalanceQueryHandler { |
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constructor( |
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@Inject('IUserSavingsRecordRepository') |
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private readonly userSavingsRecordRepository: IUserSavingsRecordRepository |
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) {} |
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public async execute( |
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query: GetUsersSavingsRecordsBalanceQuery |
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): Promise<UserSavingsRecordsBalanceView[]> { |
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const userSavingsRecords = await this.userSavingsRecordRepository.findUsersSavingsRecords(); |
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const userSavingsRecordsBalances: UserSavingsRecordsBalanceView[] = []; |
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let usersBalances = {}; |
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for (const savingsRecord of userSavingsRecords) { |
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const interestRate = savingsRecord.getInterestRate(); |
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const user = savingsRecord.getUser(); |
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const previousBalance = usersBalances[user.getId()]?.balance || 0; |
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let balance = 0; |
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if (savingsRecord.getType() === SavingsRecordType.INPUT && interestRate) { |
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balance = previousBalance + savingsRecord.getAmount() * (1 + interestRate.getRate() / 1000); |
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} else { |
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balance = previousBalance - savingsRecord.getAmount(); |
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} |
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usersBalances = { |
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...usersBalances, |
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[user.getId()]: { |
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firstName: user.getFirstName(), |
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lastName: user.getLastName(), |
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balance, |
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} |
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}; |
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} |
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for (const [userId, value] of Object.entries(usersBalances)) { |
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const {firstName, lastName, balance} = value as UserBalance; |
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userSavingsRecordsBalances.push( |
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new UserSavingsRecordsBalanceView( |
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userId, |
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firstName, |
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lastName, |
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balance / 100, |
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) |
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); |
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}; |
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return userSavingsRecordsBalances; |
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} |
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} |
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fairnesscoop /
permacoop
