import { request } from '@/api/request.js'

export const REMIND_CHANNEL_OPTIONS = [
	{ value: 'sms', label: '短信' },
	{ value: 'email', label: '邮件' },
	{ value: 'bark', label: 'Bark推送' },
	{ value: 'site', label: '站内信' },
	{ value: 'app', label: 'APP' }
]

export const REMIND_MINUTES_OPTIONS = [
	{ label: '不提前', value: 0 },
	{ label: '提前 5 分钟', value: 5 },
	{ label: '提前 10 分钟', value: 10 },
	{ label: '提前 15 分钟', value: 15 },
	{ label: '提前 30 分钟', value: 30 },
	{ label: '提前 1 小时', value: 60 },
	{ label: '提前 2 小时', value: 120 },
	{ label: '提前 1 天', value: 1440 }
]

export function normalizeSchedule(item) {
	const content = (item.content || item.title || '').trim()
	const title = (item.title || content.split('\n')[0] || '无标题').trim().slice(0, 60)
	let remindChannels = item.remindChannels || item.remind_channels || []
	if (!Array.isArray(remindChannels)) {
		remindChannels = []
	}
	remindChannels = remindChannels.map(ch => ch === 'SITE_MSG' ? 'app' : ch.toLowerCase())

	const datetime = item.schedule_time
		? new Date(item.schedule_time.replace(' ', 'T')).getTime()
		: item.datetime || 0

	const createdAt = item.created_at
		? new Date(item.created_at.replace(' ', 'T')).getTime()
		: item.createdAt || datetime

	const updatedAt = item.updated_at
		? new Date(item.updated_at.replace(' ', 'T')).getTime()
		: item.updatedAt || datetime

	return {
		...item,
		id: item.id,
		title,
		content,
		remindChannels,
		remindMinutes: item.advance_minutes ?? item.remindMinutes ?? 15,
		completed: item.is_finished ?? item.completed ?? false,
		datetime,
		createdAt,
		updatedAt
	}
}

/**
 * 获取日程列表
 */
export async function fetchSchedules(params = {}) {
	const data = await request({
		url: '/app/schedule/list',
		data: {
			page: params.page || 1,
			pageSize: params.pageSize || 50,
			keyword: params.keyword || '',
			status: params.status || ''
		}
	})
	const list = (data.list || []).map(normalizeSchedule)
	return { list, total: data.total || 0 }
}

/**
 * 获取单条日程
 */
export async function getSchedule(id) {
	const data = await request({ url: `/app/schedule/${id}` })
	return data ? normalizeSchedule(data) : null
}

/**
 * 创建日程
 */
export async function createSchedule(data) {
	const channels = (data.remindChannels || []).map(ch => {
		if (ch === 'app') return 'SITE_MSG'
		return ch.toUpperCase()
	})
	const res = await request({
		url: '/app/schedule',
		method: 'POST',
		data: {
			content: data.content,
			schedule_time: formatDateTime(data.datetime),
			remind_channels: channels,
			advance_minutes: data.remindMinutes ?? 15
		}
	})
	return res
}

/**
 * 更新日程
 */
export async function updateSchedule(id, data) {
	const channels = (data.remindChannels || []).map(ch => {
		if (ch === 'app') return 'SITE_MSG'
		return ch.toUpperCase()
	})
	await request({
		url: `/app/schedule/${id}`,
		method: 'PUT',
		data: {
			content: data.content,
			schedule_time: formatDateTime(data.datetime),
			remind_channels: channels,
			advance_minutes: data.remindMinutes ?? 15
		}
	})
}

/**
 * 删除日程
 */
export async function deleteSchedule(id) {
	await request({ url: `/app/schedule/${id}`, method: 'DELETE' })
	return true
}

/**
 * 切换完成状态
 */
export async function toggleScheduleComplete(id) {
	const res = await request({
		url: `/app/schedule/${id}/toggle`,
		method: 'POST'
	})
	return {
		...res,
		completed: res?.is_finished ?? false
	}
}

function formatDateTime(timestamp) {
	const d = new Date(timestamp)
	const pad = n => String(n).padStart(2, '0')
	return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}:${pad(d.getSeconds())}`
}

export function getRemindChannelLabel(value) {
	return REMIND_CHANNEL_OPTIONS.find(item => item.value === value)?.label || value
}

export function getRemindChannelLabels(channels = []) {
	if (!channels.length) return '未设置'
	return channels.map(getRemindChannelLabel).join('、')
}

export function getRemindMinutesLabel(minutes) {
	const item = REMIND_MINUTES_OPTIONS.find(option => option.value === minutes)
	return item?.label || (minutes ? `提前 ${minutes} 分钟` : '不提前')
}

export function getScheduleSummary(item) {
	const text = (item?.content || item?.title || '').trim()
	const line = text.split('\n')[0]
	return line || '无内容'
}