@sambruca/xe-client/dist/client.js

Node client for interactive with XE API

import axios from "axios";
import { InvalidCCYError, XERequestError, } from "./types";
import { isValidCCY } from "./currencyCode";
export const xeClient = (xeApiId, xeApiKey) => {
    const options = {
        auth: {
            username: xeApiId,
            password: xeApiKey,
        },
        baseURL: "https://xecdapi.xe.com/v1/",
    };
    const getRateForDate = async (fromCurrency, toCurrencies, currencyDate) => {
        if (!isValidCCY(fromCurrency)) {
            return Promise.reject(new InvalidCCYError(fromCurrency));
        }
        const invalidCCYs = toCurrencies.filter((ccy) => !isValidCCY(ccy));
        if (invalidCCYs.length > 0) {
            return Promise.reject(new InvalidCCYError(invalidCCYs.join(",")));
        }
        const path = "historic_rate";
        const toParam = toCurrencies.join(",");
        const query = {
            from: fromCurrency,
            to: toParam,
            amount: 1,
        };
        query.date = currencyDate.toISOString().split("T")[0];
        try {
            const response = await handleXERequest(path, query);
            let requestsRemaining = 0;
            if (response.headers) {
                requestsRemaining = response.headers["x-raterequest-remaining"];
            }
            const rates = response.data.to.map((t) => {
                return {
                    from: response.data.from,
                    to: t.quotecurrency,
                    timestamp: response.data.timestamp,
                    rate: t.mid,
                };
            });
            return {
                rates,
                requestsRemaining,
            };
        }
        catch (e) {
            console.error(e);
            throw new XERequestError(query, path, e);
        }
    };
    const handleXERequest = async (path, query) => {
        console.debug(`Performing request to XE ${path} endpoint with query params: ${JSON.stringify(query)}`);
        const response = await axios.get(path, {
            params: query,
            ...options,
        });
        console.debug(`Request complete with status: ${response.status}|${response.statusText}`);
        console.debug(`Response data: ${JSON.stringify(response.data)}`);
        return response;
    };
    return {
        getRateForDate,
    };
};
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