import { get, put } from '../../utils/request/index'
import { lefuService } from '../../lefu/index'

/** GET /weighingScale/v3/selectUserBySn/user 返回的单条结构（编辑回填用） */
interface SysUserDevice {
	id: string
	realname: string
	idCard: string
	height: number
	sex: number
	birthday: string
}

/** 表单数据模型 */
interface MemberForm {
	/** 姓名 */
	name: string
	/** 身份证号 */
	idCard: string
	/** 性别(由身份证解析,只读) */
	gender: string
	/** 年龄(由身份证解析,只读) */
	age: string
	/** 身高(cm) */
	height: string
	/** 体重(kg) */
	weight: string
}

/** 身份证解析结果 */
interface IdCardParsed {
	gender: string
	age: string
	sex: number
	birthday: string
}

/** 从抽屉组件 select 事件接收的成员数据 */
interface ExistingMember {
	name: string
	gender: '男' | '女'
	age: number
	height: number
	weight: number
	idCard: string
}

/**
 * 添加/编辑成员页
 * URL 参数含 userId 时为编辑模式，隐藏「从已有成员中选择」按钮并预填表单
 */
Page({
	data: {
		/** 编辑模式标记 */
		isEdit: false,
		/** 编辑时的用户 ID */
		userId: '',

		form: {
			name: '',
			idCard: '',
			gender: '',
			age: '',
			height: '',
			weight: ''
		} as MemberForm,

		showSelectDrawer: false,
	},

	onLoad(options: Record<string, string>) {
		const { userId } = options
		if (!userId) return
		this.setData({ isEdit: true, userId })
		get<SysUserDevice>('weighingScale/v2/getUserInfo', { id: userId }, { loading: false })
			.then((res: any) => {
				const u: SysUserDevice = res.result
				if (!u) return
				const parsed = this.parseIdCard(u.idCard ?? '')
				this.setData({
					'form.name': u.realname ?? '',
					'form.idCard': u.idCard ?? '',
					'form.gender': parsed.gender,
					'form.age': parsed.age,
					'form.height': String(u.height ?? ''),
				})
			})
	},

	onNameInput(e: WechatMiniprogram.Input) {
		this.setData({ 'form.name': e.detail.value })
	},

	onIdCardInput(e: WechatMiniprogram.Input) {
		const idCard = (e.detail.value || '').trim().toUpperCase()
		const parsed = this.parseIdCard(idCard)
		this.setData({
			'form.idCard': idCard,
			'form.gender': parsed.gender,
			'form.age': parsed.age
		})
	},

	onHeightInput(e: WechatMiniprogram.Input) {
		this.setData({ 'form.height': e.detail.value })
	},

	onWeightInput(e: WechatMiniprogram.Input) {
		this.setData({ 'form.weight': e.detail.value })
	},

	/**
	 * 解析身份证，返回性别、年龄、sex 数值、出生日期
	 */
	parseIdCard(idCard: string): IdCardParsed {
		const empty: IdCardParsed = { gender: '', age: '', sex: 0, birthday: '' }
		if (!/^\d{17}[\dX]$/.test(idCard)) return empty

		const genderCode = parseInt(idCard.charAt(16), 10)
		const sex = genderCode % 2 === 1 ? 1 : 2
		const gender = sex === 1 ? '男' : '女'

		const year = parseInt(idCard.substr(6, 4), 10)
		const month = parseInt(idCard.substr(10, 2), 10)
		const day = parseInt(idCard.substr(12, 2), 10)
		if (!year || month < 1 || month > 12 || day < 1 || day > 31) return empty

		const now = new Date()
		let age = now.getFullYear() - year
		if (now.getMonth() + 1 < month || (now.getMonth() + 1 === month && now.getDate() < day)) age -= 1
		if (age < 0 || age > 150) return empty

		const mm = String(month).padStart(2, '0')
		const dd = String(day).padStart(2, '0')
		return { gender, age: String(age), sex, birthday: `${year}-${mm}-${dd}` }
	},

	onTapSelectExisting() {
		this.setData({ showSelectDrawer: true })
	},

	onSelectMemberClose() {
		this.setData({ showSelectDrawer: false })
	},

	onSelectMember(e: WechatMiniprogram.CustomEvent<ExistingMember>) {
		const { name, gender, age, height, weight, idCard } = e.detail
		this.setData({
			showSelectDrawer: false,
			'form.name': name,
			'form.idCard': idCard,
			'form.gender': gender,
			'form.age': String(age),
			'form.height': String(height),
			'form.weight': String(weight),
		})
	},

onCancel() {
		wx.navigateBack()
	},

	onSubmit() {
		const { name, idCard, gender, age, height, weight } = this.data.form
		const heightNum = parseFloat(height)
		const weightNum = parseFloat(weight)

		if (!name.trim()) {
			wx.showToast({ title: '请填写姓名', icon: 'none' })
			return
		}
		if (idCard.length !== 18) {
			wx.showToast({ title: '请填写正确的身份证号', icon: 'none' })
			return
		}
		if (!gender || !age) {
			wx.showToast({ title: '身份证号有误，请检查', icon: 'none' })
			return
		}
		if (!height || isNaN(heightNum) || heightNum <= 0) {
			wx.showToast({ title: '请填写身高', icon: 'none' })
			return
		}
		if (!weight || isNaN(weightNum) || weightNum <= 0) {
			wx.showToast({ title: '请填写体重', icon: 'none' })
			return
		}

		const parsed = this.parseIdCard(idCard)
		const userInfo = wx.getStorageSync('userInfo')
		const connectDeviceInfoRaw = wx.getStorageSync('connectDeviceInfo')

		const payload: Record<string, any> = {
			parentUserId: userInfo?.userId ?? '',
			scaleDeviceId: lefuService.deviceInfo?.serialNumber ?? '',
			realname: name.trim(),
			idCard,
			sex: parsed.sex,
			birthday: parsed.birthday,
			height: heightNum,
			weight: weightNum,
			connectDeviceInfo: connectDeviceInfoRaw ? JSON.stringify(connectDeviceInfoRaw) : '',
		}
		if (this.data.isEdit) {
			payload.id = this.data.userId
		}

		const successMsg = this.data.isEdit ? '保存成功' : '添加成功'
		const failMsg = this.data.isEdit ? '保存失败，请重试' : '添加失败，请重试'

		put('weighingScale/v3/edit/user', payload)
			.then(() => {
				wx.showToast({ title: successMsg, icon: 'success' })
				setTimeout(() => {
					// 通知上一页（equipmentMember）刷新成员列表
					const pages = getCurrentPages()
					const prevPage = pages[pages.length - 2] as any
					if (prevPage && prevPage.data?.sn) {
						prevPage._loadData(prevPage.data.sn)
					}
					wx.navigateBack()
				}, 1500)
			})
			.catch(() => {
				wx.showToast({ title: failMsg, icon: 'none' })
			})
	}
})