import type { Counts } from '../../shared/api/types/status';

export const RING_RADIUS = 62;
const RING_CIRCUMFERENCE = 2 * Math.PI * RING_RADIUS;
const RING_GAP = 5;
const FULL_PERCENT = 100;

export type RingGeometry = {
	workingLength: number;
	problemLength: number;
	workingDash: string;
	problemDash: string;
	workingPercent: number;
};

export function problemCount( counts: Counts ): number {
	return counts.broken + counts.blocked + counts.moved;
}

export function ringGeometry( counts: Counts ): RingGeometry {
	const hasLinks = counts.total > 0;
	const workingShare = hasLinks ? counts.working / counts.total : 0;
	const problemShare = hasLinks ? problemCount( counts ) / counts.total : 0;
	const workingLength = workingShare * RING_CIRCUMFERENCE;
	const problemLength = problemShare * RING_CIRCUMFERENCE;
	const visibleWorkingLength = Math.max( 0, workingLength - RING_GAP );

	return {
		workingLength,
		problemLength,
		workingDash: `${ String( visibleWorkingLength ) } ${ String(
			RING_CIRCUMFERENCE
		) }`,
		problemDash: `${ String( problemLength ) } ${ String(
			RING_CIRCUMFERENCE
		) }`,
		workingPercent: hasLinks ? workingShare * FULL_PERCENT : FULL_PERCENT,
	};
}