@synotech/utils/src/math.cryptography.ts

a collection of utilities for internal use

import BigNumber from 'bignumber.js';

class MathCryptography {
	constructor() {
		BigNumber.config({
			DECIMAL_PLACES: 20,
			ROUNDING_MODE: BigNumber.ROUND_HALF_UP,
		});
	}

	add(...args: string[] | number[]): string {
		let result = new BigNumber(0);
		args.forEach((arg: number | string) => {
			result = result.plus(new BigNumber(arg));
		});
		return result.toString();
	}

	subtract(...args: string[] | number[]): string {
		if (args.length < 2) {
			throw new Error('Subtraction requires at least two arguments');
		}
		let result = new BigNumber(args[0]);
		for (let i = 1; i < args.length; i++) {
			result = result.minus(new BigNumber(args[i]));
		}
		return result.toString();
	}

	multiply(...args: string[] | number[]): string {
		let result = new BigNumber(1);
		args.forEach((arg: number | string) => {
			result = result.times(new BigNumber(arg));
		});
		return result.toString();
	}

	divide(...args: string[] | number[]): string {
		if (args.length < 2) {
			throw new Error('Division requires at least two arguments');
		}
		let result = new BigNumber(args[0]);
		for (let i = 1; i < args.length; i++) {
			if (args[i] === '0') {
				throw new Error('Division by zero');
			}
			result = result.dividedBy(new BigNumber(args[i]));
		}
		return result.toString();
	}

	isZero(number: BigNumber): boolean {
		return number.isZero() || number.isNegative();
	}

	greaterThan(left: string, right: string): boolean {
		const leftNumber = new BigNumber(left);
		const rightNumber = new BigNumber(right);
		return leftNumber.gt(rightNumber);
	}

	greaterThanOrEqualTo(left: string, right: string): boolean {
		const leftNumber = new BigNumber(left);
		const rightNumber = new BigNumber(right);
		return leftNumber.gte(rightNumber);
	}

	lessThanOrEqualTo(left: string, right: string): boolean {
		const leftNumber = new BigNumber(left);
		const rightNumber = new BigNumber(right);
		return leftNumber.lte(rightNumber);
	}

	lessThan(left: string, right: string): boolean {
		const leftNumber = new BigNumber(left);
		const rightNumber = new BigNumber(right);
		return leftNumber.lt(rightNumber);
	}
}

const mathCryptography = new MathCryptography();
export { MathCryptography, mathCryptography };