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import { CommandHandler } from '@nestjs/cqrs'; |
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import { Inject } from '@nestjs/common'; |
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import { ICustomerRepository } from 'src/Domain/Customer/Repository/ICustomerRepository'; |
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import { GenerateInvoiceCommand } from './GenerateInvoiceCommand'; |
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import { CustomerNotFoundException } from 'src/Domain/Customer/Exception/CustomerNotFoundException'; |
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import { IEventRepository } from 'src/Domain/FairCalendar/Repository/IEventRepository'; |
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import { Invoice } from 'src/Domain/Accounting/Invoice.entity'; |
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import { InvoiceItem } from 'src/Domain/Accounting/InvoiceItem.entity'; |
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import { IInvoiceRepository } from 'src/Domain/Accounting/Repository/IInvoiceRepository'; |
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import { IInvoiceItemRepository } from 'src/Domain/Accounting/Repository/IInvoiceItemRepository'; |
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import { InvoiceIdGenerator } from 'src/Domain/Accounting/Generators/InvoiceIdGenerator'; |
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import { NoBillableEventsFoundException } from 'src/Domain/Accounting/Exception/NoBillableEventsFoundException'; |
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import { IDateUtils } from 'src/Application/IDateUtils'; |
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@CommandHandler(GenerateInvoiceCommand) |
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export class GenerateInvoiceCommandHandler { |
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constructor( |
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@Inject('ICustomerRepository') |
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private readonly customerRepository: ICustomerRepository, |
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@Inject('IEventRepository') |
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private readonly eventRepository: IEventRepository, |
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@Inject('IInvoiceRepository') |
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private readonly invoiceRepository: IInvoiceRepository, |
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@Inject('IInvoiceItemRepository') |
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private readonly invoiceItemRepository: IInvoiceItemRepository, |
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@Inject('IDateUtils') |
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private readonly dateUtils: IDateUtils, |
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private readonly invoiceIdGenerator: InvoiceIdGenerator |
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) {} |
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public async execute(command: GenerateInvoiceCommand): Promise<string> { |
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const { customerId, status, generatedDate, user, expireInDays } = command; |
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const customer = await this.customerRepository.findOneById(customerId); |
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if (!customer) { |
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throw new CustomerNotFoundException(); |
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} |
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const [ invoiceId, events ] = await Promise.all([ |
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this.invoiceIdGenerator.generate(), |
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this.eventRepository.findBillableEventsByMonthAndCustomer(generatedDate, customer) |
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]); |
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if (0 === events.length) { |
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throw new NoBillableEventsFoundException(); |
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} |
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const expiryDate = this.dateUtils.addDaysToDate(generatedDate, expireInDays); |
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const invoice = new Invoice(invoiceId, status, expiryDate.toISOString(), user, customer); |
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const invoiceItems: InvoiceItem[] = []; |
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for (const { |
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time, |
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billable, |
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day_duration, |
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project_name, |
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task_name, |
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first_name, |
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last_name, |
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amount |
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} of events) { |
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invoiceItems.push( |
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new InvoiceItem( |
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invoice, |
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`${project_name} - ${task_name} - ${first_name} ${last_name}`, |
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Math.ceil(time / day_duration * 100) / 100, |
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Number(amount), |
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billable ? 0 : 100 |
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) |
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); |
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} |
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await this.invoiceRepository.save(invoice); |
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await this.invoiceItemRepository.save(invoiceItems); |
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return invoice.getId(); |
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} |
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} |
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fairnesscoop /
permacoop
