/**
 * 长连接 appWs:notice 与 NotificationTab.onAppWsNotice 同一套字段解析
 * @param {object} msg
 * @returns {{ time: string, text: string, id: string, picture: string } | null}
 */
export function parseAppWsNoticeDisplay(msg) {
	if (!msg || typeof msg !== 'object') return null
	const outer = msg.data
	if (!outer || typeof outer !== 'object') return null
	const row =
		outer.data && typeof outer.data === 'object' && !Array.isArray(outer.data)
			? outer.data
			: outer
	const createTime =
		row.createTime || row.time || msg.createTime || outer.createTime || ''
	const text =
		row.content ||
		row.message ||
		row.title ||
		outer.content ||
		msg.content ||
		''
	if (!String(text).trim() && !createTime) return null
	const id =
		row.id != null && row.id !== ''
			? String(row.id)
			: row.noticeId != null && row.noticeId !== ''
				? String(row.noticeId)
				: ''
	const picture = row.picture || outer.picture || msg.picture || ''
	return {
		time: String(createTime),
		text: String(text),
		id,
		picture: String(picture || '').trim(),
	}
}

/**
 * 展示用时间（原样或截断常见 ISO）
 */
export function formatNoticeTimeForBanner(raw) {
	if (!raw) return ''
	const s = String(raw).trim()
	if (/^\d{4}-\d{2}-\d{2}[\sT]\d{2}:\d{2}/.test(s)) {
		return s.replace('T', ' ').replace(/\.\d{3}Z?$/, '')
	}
	return s
}