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import { InjectRepository } from '@nestjs/typeorm';
import axios from 'axios';
import { mapValues, pick, range, uniq } from 'lodash-es';
import { FindOptionsWhere, In, Not, Repository } from 'typeorm';
import { convertDateToTimestamp } from '@amalia/amalia-lang/formula/evaluate/shared';
import { Currency, globalConfiguration, type Company, type RatesType } from '@amalia/core/models';
import { dayjs } from '@amalia/ext/dayjs';
import { type CurrencySymbolsEnum } from '@amalia/ext/iso-4217';
import { toError } from '@amalia/ext/typescript';
import { PeriodFrequencyEnum } from '@amalia/payout-definition/periods/types';
import { CreateCurrencyRequest } from '@amalia/tenants/companies/currency-rates/types';
/**
* Service currency.
*/
@Injectable()
export class CurrenciesService {
private readonly logger = new Logger(CurrenciesService.name);
private readonly configuration = globalConfiguration();
public constructor(
@InjectRepository(Currency)
private readonly currencyRepository: Repository<Currency>,
) {}
public static convertRatesToCompanyCurrency(companyCurrency: CurrencySymbolsEnum, currency: Currency): Currency {
const companyRate = currency.rates[companyCurrency];
return {
...currency,
rates: mapValues(currency.rates, (rate) => rate / companyRate),
};
}
/**
* Find all currencies attached to a company
* @param company company
* @param year
* @param date
* @param excludeIds if you want to find all currencies in a year except some with given ids
*/
public async findAll(
company: Company,
year: string | null = null,
date: string | null = null,
excludeIds?: string[],
): Promise<Currency[]> {
// If year set, search for currencies using company frequency and if not exist create them
let currencies: Currency[] = [];
try {
if (year) {
if (company.statementFrequency === PeriodFrequencyEnum.quarter) {
// Refresh currency for each quarter of the year (quarter index begins at 1)
await Promise.all(
range(1, 5).map(async (quarterIndex) => {
// Get dates of the end of the quarter
const quarterDate = dayjs(year, 'YYYY').quarter(quarterIndex).endOf('quarter').format('YYYY-MM-DD');
const quarterDateUnix = dayjs(year, 'YYYY').quarter(quarterIndex).endOf('quarter').unix();
const condition: FindOptionsWhere<Currency> = {
date: quarterDateUnix,
};
if (excludeIds) {
condition.id = Not(In(excludeIds));
}
let existingCurrency = await this.currencyRepository.findOne({
where: condition,
});
if (!existingCurrency) {
this.logger.warn(`Currency not found for quarter ${quarterIndex}, we must refresh.`);
await this.refreshCurrency(company, quarterDate);
existingCurrency = await this.currencyRepository.findOne({
where: condition,
});
}
currencies.push(existingCurrency!);
}),
);
} else if (company.statementFrequency === PeriodFrequencyEnum.month) {
// Refresh currency for each month of the year (month index begins at 0)
await Promise.all(
range(0, 12).map(async (monthIndex) => {
// get dates of the end of the month
const monthDate = dayjs(year, 'YYYY').month(monthIndex).endOf('month').format('YYYY-MM-DD');
const monthDateUnix = dayjs(year, 'YYYY').month(monthIndex).endOf('month').unix();
const condition: FindOptionsWhere<Currency> = {
date: monthDateUnix,
};
if (excludeIds) {
condition.id = Not(In(excludeIds));
}
let existingCurrency = await this.currencyRepository.findOne({
where: condition,
});
if (!existingCurrency) {
this.logger.warn(`Currency not found for quarter ${monthIndex}, we must refresh.`);
await this.refreshCurrency(company, monthDate);
existingCurrency = await this.currencyRepository.findOne({
where: condition,
});
}
currencies.push(existingCurrency!);
}),
);
}
} else {
const condition: FindOptionsWhere<Currency> = {};
if (date) {
condition.date = dayjs(date, 'YYYY-MM-DD')
.endOf(company.statementFrequency === PeriodFrequencyEnum.month ? 'month' : 'quarter')
.unix();
}
if (excludeIds) {
condition.id = Not(In(excludeIds));
}
currencies = await this.currencyRepository.find({
where: condition,
});
}
} catch (err) {
const error = toError(err);
this.logger.error({
message: `Error on fetching currencies - ${error.message}`,
error,
company: pick(company, ['id', 'name']),
});
throw new HttpException('Error on fetching currencies', HttpStatus.INTERNAL_SERVER_ERROR);
}
return currencies
.toSorted((c1, c2) => c1.date - c2.date)
.map((c) => CurrenciesService.convertRatesToCompanyCurrency(company.currency, c));
}
/**
* Find currency by id.
* @id id of the currency
* @throws {NotFoundException}
*/
public async findOne(company: Company, id: string): Promise<Currency> {
const currency = await this.currencyRepository.findOneBy({ id });
if (!currency) {
throw new NotFoundException();
}
return CurrenciesService.convertRatesToCompanyCurrency(company.currency, currency);
}
/**
* Find currency by date
* @param company company
* @param date date
*/
public async findCurrencyByDate(company: Company, date?: number): Promise<Currency> {
const currency = await this.currencyRepository.findOneBy({
date: dayjs
.utc(date, 'X')
.endOf(company.statementFrequency === PeriodFrequencyEnum.month ? 'month' : 'quarter')
.unix(),
});
if (!currency) {
throw new NotFoundException();
}
return CurrenciesService.convertRatesToCompanyCurrency(company.currency, currency);
}
/**
* Create new currency.
* @param company company of the new currency
* @param currency currency to create
* @throws {HttpException}
*/
public async createOrUpdate(company: Company, currency: CreateCurrencyRequest): Promise<void> {
// Use Company Frequency to ensure we are looking for end of month or end of Quarter date
const date = convertDateToTimestamp(currency.date);
const companyDate = dayjs(date, 'X')
.endOf(company.statementFrequency === PeriodFrequencyEnum.month ? 'month' : 'quarter')
.unix();
let currencyAlreadyExist: Currency | null = null;
try {
currencyAlreadyExist = await this.findCurrencyByDate(company, companyDate);
} catch {
// do nothing here, we just wanted to check if we already have one currency
}
// Retrieve Rates from fixer.io
// compare companyDate to actual date (now)
const url =
companyDate > dayjs().unix()
? `${this.configuration.fixer.url}/api/latest?access_key=${this.configuration.fixer.accessKey}`
: `${this.configuration.fixer.url}/api/${dayjs(companyDate, 'X').format('YYYY-MM-DD')}?access_key=${
this.configuration.fixer.accessKey
}`;
const response = await axios.get<{ success?: boolean; rates: RatesType }>(url, { timeout: 10_000 }).catch(() => {
throw new HttpException(
'Axios in currency creation failed, please contact admin',
HttpStatus.INTERNAL_SERVER_ERROR,
);
});
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (!response.data || response.data.success !== true) {
throw new HttpException(
'Fixer in currency creation failed, please contact admin',
HttpStatus.INTERNAL_SERVER_ERROR,
);
}
try {
const currencyToUpsert = {
date: companyDate,
updatedAt: new Date(),
id: currencyAlreadyExist?.id || undefined,
rates: response.data.rates,
};
await this.currencyRepository.save(currencyToUpsert);
} catch (err) {
const error = toError(err);
this.logger.error({ message: 'Error on create currency', error, company: pick(company, ['id', 'name']) });
throw new HttpException('currency creation failed, please contact admin', HttpStatus.INTERNAL_SERVER_ERROR);
}
}
public async batchRefreshCurrencies() {
const datesToRefresh: number[] = [
// Add last month
dayjs().add(-1, 'month').endOf('month').unix(),
// Add last trimester
dayjs().add(-3, 'month').endOf('quarter').unix(),
];
// For current year AND next year, add all months
range(0, 12).forEach((monthIndex) => {
const currentYear = dayjs().format('YYYY');
const nextYear = dayjs().add(1, 'year').format('YYYY');
datesToRefresh.push(dayjs(currentYear, 'YYYY').month(monthIndex).endOf('month').unix());
datesToRefresh.push(dayjs(nextYear, 'YYYY').month(monthIndex).endOf('month').unix());
});
const uniqueDatesToRefresh = uniq(datesToRefresh);
// Call fixer APIs on all that
// Doing a for: we want to do it one at a time
for (const uniqueDateToRefresh of uniqueDatesToRefresh) {
let currencyAlreadyExist: Currency | null = null;
// Verify if currency already exists, passing a monthly company
try {
// One at a time
currencyAlreadyExist = await this.findCurrencyByDate(
{ statementFrequency: PeriodFrequencyEnum.month } as Company,
uniqueDateToRefresh,
);
} catch (err) {
// Ignore not found exceptions
if (!(err instanceof NotFoundException)) {
throw err;
}
}
const currencyToCreate: Currency = this.currencyRepository.create({
id: currencyAlreadyExist?.id || undefined,
date: uniqueDateToRefresh,
rates: {} as RatesType,
updatedAt: new Date(),
});
const url =
uniqueDateToRefresh > dayjs().unix()
? `${this.configuration.fixer.url}/api/latest?access_key=${this.configuration.fixer.accessKey}`
: `${this.configuration.fixer.url}/api/${dayjs(uniqueDateToRefresh, 'X').format('YYYY-MM-DD')}?access_key=${
this.configuration.fixer.accessKey
}`;
// One at a time
const response = await axios.get<{ success?: boolean; rates: RatesType }>(url, { timeout: 10_000 });
if (response.data.success === true) {
try {
currencyToCreate.rates = response.data.rates;
// One at a time
await this.currencyRepository.save(currencyToCreate);
} catch (err) {
const error = toError(err);
this.logger.error({ message: 'Error on batch create currency', error });
throw new HttpException('currency creation failed, please contact admin', HttpStatus.INTERNAL_SERVER_ERROR);
}
} else {
throw new HttpException(
'Fixer in currency batch creation failed, please contact admin',
HttpStatus.INTERNAL_SERVER_ERROR,
);
}
}
}
/**
* Refresh currency
* @param company
* @param dateToRefresh
*/
public async refreshCurrency(company: Company, dateToRefresh: string): Promise<void> {
await this.createOrUpdate(company, { date: dateToRefresh });
}
}
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