restpki-client/lib/api-version.js

Classes to consume Lacuna Software REST PKI

'use strict';

class ApiVersion {

	constructor(v) {
		if ((!v) && (/([0-9.])$/.test(v))) {
			throw new Error(`Invalid version.`);
		}

		this._versionStr = v;
		this._versionArr = v.split('.').map(n => Number(n));
	}

	isLessThanOrEqualTo(otherVersion) {

		let compResult = this.compareElementsBasedOnThisInstance(otherVersion);
		return compResult <= 0;
	}

	isLessThan(otherVersion) {

		let compResult = this.compareElementsBasedOnThisInstance(otherVersion);
		return compResult == -1;
	}

	isEqualTo(otherVersion) {

		let compResult = this.compareElementsBasedOnThisInstance(otherVersion);
		return compResult == 0;
	}

	isGreaterThan(otherVersion) {

		let compResult = this.compareElementsBasedOnThisInstance(otherVersion);
		return compResult == 1;
	}

	isGreaterThanOrEqualTo(otherVersion) {

		let compResult = this.compareElementsBasedOnThisInstance(otherVersion);
		return compResult >= 0;
	}

	compareElementsBasedOnThisInstance(otherVersion) {
		try {
			for (let i = 0; i < this.getVersionArr().length; i++) {
				if (i >= (otherVersion.getVersionArr().length)) {
					return 1;
				}
				if (this.getVersionArr()[i] < otherVersion.getVersionArr()[i]) {
					return -1;
				} else if (this.getVersionArr()[i] > otherVersion.getVersionArr()[i]) {
					return 1;
				}
			}
			if (this.getVersionArr().length < otherVersion.getVersionArr().length) {
				return -1;
			} else {
				return 0;
			}
		} catch (err) {
			throw new Error('Invalid object provided as parameter');
		}
	}

	getVersionArr() {
		return this._versionArr;
	}

	getVersionStr() {
		return this._versionStr;
	}

	get versionArr() {
		return this.getVersionArr();
	}

	get versionStr() {
		return this.getVersionStr();
	}
}

exports.ApiVersion = ApiVersion;