easy-currencies
Version:
A tool for easy conversion of currencies.
154 lines • 9.05 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveProviders = exports.Config = void 0;
const axios_1 = __importDefault(require("axios"));
const providers_1 = require("./providers");
const utils_1 = require("./utils");
/**
* Config object that initializes with configuration data
* passed in by the user.
*
* @export
* @class Config
*/
class Config {
/**
* Provider getter.
*
* @returns {Provider[]}
* @memberof Config
*/
get providers() {
return this._active;
}
/**
* Provider setter (adder).
*
* @param {Provider[]} providers - providers to be added
* @param {boolean} [setActive=false] - should the new provider(s) be prioritized
* @returns {void}
* @memberof Config
*/
addProviders(providers, setActive) {
providers = providers.filter((p) => {
return !this._active.find((a) => a == p);
});
if (setActive) {
this._active.unshift(...providers);
return;
}
this._active.push(...providers);
return;
}
/**
* Returns the current provider
*
* @returns {Provider} - current provider
* @memberof Config
*/
activeProvider() {
return this._active[0];
}
/**
* Creates an instance of Config.
* @param {(...ProviderReference[] | undefined[] | string[])} config
* @memberof Config
*/
constructor(...config) {
/**
* Active client.
*/
this._client = axios_1.default.create();
/**
* Client setter.
* @param client The client.
*/
this.setClient = (client) => {
this._client = client;
};
/**
* Client getter.
*/
this.getClient = () => {
return this._client;
};
/**
* Adds a single new, user-defined provider to the list of providers.
*
* @param {string} name - the new provider name
* @param {Provider} provider - the new provider object
* @param {boolean} [setActive=false] - should the new provider(s) be prioritized
* @memberof Config
*/
this.add = (name, provider, setActive = false) => {
this.addMultiple([{ name, provider }], setActive);
};
/**
* Adds multiple new, user-defined provider to the list of providers.
*
* @param {UserDefinedProvider[]} providers - providers to be added
* @param {boolean} [setActive=false] - should the new provider(s) be prioritized
* @memberof Config
*/
this.addMultiple = (newProviders, setActive = false) => {
// Duplicate check
newProviders.forEach((p) => {
if (!(0, utils_1.checkIfUserDefinedProvider)(p)) {
throw "Invalid provider format!";
}
if (providers_1.providers[p.name]) {
throw "A provider by this name is already registered!";
}
providers_1.providers[p.name] = p.provider;
});
// Adding provider to active providers
this.addProviders(newProviders.map((p) => p.provider), setActive);
};
/**
* Removes a specific provider
* @param {Provider} provider - provider to be removed
* @memberof Config
*/
this.remove = (provider) => {
this._active = this._active.filter((p) => p != provider);
};
this._active = resolveProviders(...config);
// adding default fallback
this.addProviders([providers_1.providers.ExchangeRateAPI], false);
}
}
exports.Config = Config;
/**
* Config resolver that normalizes configuration input into the config interface
*
* @export
* @param {(...ProviderReference[] | undefined[] | string[])} configuration
* @returns {Provider[]}
*/
function resolveProviders(...configuration) {
// resolve default if none provided.
if (typeof configuration === "undefined" || !configuration.length) {
return [providers_1.providers.ExchangeRateAPI];
}
// checking for incorrect config types
if (typeof configuration[0] !== "object" &&
typeof configuration[0] !== "undefined" &&
typeof configuration[0] !== "string") {
throw "You must either supply nothing or a config object (see the 'config' section to see the different APIs that can be used)";
}
// returning single provider
if (typeof configuration[0] === "string") {
// constructing in initializationConfig object from string values
return [(0, providers_1.resolveProvider)({ name: configuration[0], key: configuration[1] })];
}
// configuration is an array of providers
// casting
const initializationConfig = configuration;
// resolving all providers
return initializationConfig.map((provider) => (0, providers_1.resolveProvider)(provider));
}
exports.resolveProviders = resolveProviders;
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