import { t } from '@/i18n'
import type { Byline } from '@/lib/articleTypes'

export function authorsSummary(authors: Byline[]) {
	const [first] = authors
	if (!first) {
		return t('No authors')
	}
	return authors.length === 1 ? first.name : t('{0} +{1}', [first.name, authors.length - 1])
}

export function metaSummary(authors: Byline[], siteName: string | null) {
	const summary = authorsSummary(authors)
	return siteName ? t('{0} · {1}', [siteName, summary]) : summary
}

export function insertionTarget(from: number, gap: number) {
	return gap > from ? gap - 1 : gap
}

export function sameIds(left: Byline[], right: Byline[]) {
	return left.length === right.length && left.every((item, index) => item.id === right[index]?.id)
}

export function toBylines(authors: Byline[]): Byline[] {
	return authors.map(({ id, name, slug, avatar_id }) => ({ id, name, slug, avatar_id }))
}