const SEARCH_HISTORY_LIMIT = 5

export function getSearchHistory(storageKey) {
	if (!storageKey) return []
	const cached = uni.getStorageSync(storageKey)
	if (!Array.isArray(cached)) return []
	return cached
		.map(item => String(item || '').trim())
		.filter(Boolean)
		.slice(0, SEARCH_HISTORY_LIMIT)
}

export function saveSearchHistory(storageKey, keyword) {
	const word = String(keyword || '').trim()
	const current = getSearchHistory(storageKey)
	if (!storageKey || !word) return current
	const next = [word]
		.concat(current.filter(item => item !== word))
		.slice(0, SEARCH_HISTORY_LIMIT)
	uni.setStorageSync(storageKey, next)
	return next
}