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
	weight: number
	sex: number
	birthday: string
}

/** GET /weighingScale/v3/getUserInfoByIdcard 返回的 result 结构 */
interface UserInfoFromServer {
	id: string | null
	userId: string
	parentUserId: string | null
	scaleDeviceId: string
	deviceId: string | null
	deviceType: string
	dataType: number
	userType: string | null
	idCard: string
	height: number
	weight: number
	birthday: string
	sex: number
	avatar: string | null
	phone: string
	thirdId: string | null
	realname: string
	bmi: number
	workNo: string
	remark: string | null
	relationType: string | null
	sn: string
	delFlag: number
	sex_dictText: 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（完整 item） */
interface ExistingMember {
	id: string
	name: string
	gender: '男' | '女'
	age: number
	height: number
	weight: number
	idCard: string
	avatar?: string
	[key: string]: any
}

/**
 * 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,

		/** 从抽屉选中的完整成员数据，提交时作为 base spread */
		selectedMember: null as ExistingMember | null,
		showSelectDrawer: false,
		/** 正在请求身份证查询接口 */
		querying: false,
		/** 是否已完成一次身份证查询（成功 200 即视为完成，无论 result 是否为 null） */
		hasQueried: false,
		/** 接口返回的用户信息，姓名 + 身份证联动校正性别年龄 */
		serverResult: null as UserInfoFromServer | null,
		/** 表单只读状态（code=101 时置为 true） */
		readonly: false,
		/** 是否显示确认弹框 */
		showConfirmModal: false,
	},

	onLoad(options: Record<string, string>) {
		const { userId } = options
		if (!userId) return
		this.setData({ isEdit: true, userId })
		get<SysUserDevice>('weighingScale/v3/select/userinfo/byId', { 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 ?? ''),
					'form.weight': String(u.weight ?? ''),
				})
				if ((u.realname ?? '').trim() && this.isIdCardValid(u.idCard ?? '')) {
					this.fetchUserInfoByIdCard(u.realname.trim(), u.idCard)
				}
			})
	},

	onNameInput(e: WechatMiniprogram.Input) {
		const name = e.detail.value
		this.setData({
			'form.name': name,
			'form.gender': '',
			'form.age': '',
			serverResult: null,
			hasQueried: false,
			readonly: false
		})
		if (name.trim() && this.isIdCardValid(this.data.form.idCard)) {
			this.fetchUserInfoByIdCard(name.trim(), this.data.form.idCard)
		}
	},

	onIdCardInput(e: WechatMiniprogram.Input) {
		const idCard = (e.detail.value || '').trim().toUpperCase()
		this.setData({
			'form.idCard': idCard,
			'form.gender': '',
			'form.age': '',
			serverResult: null,
			hasQueried: false,
			readonly: false
		})
		if (this.data.form.name.trim() && this.isIdCardValid(idCard)) {
			this.fetchUserInfoByIdCard(this.data.form.name.trim(), idCard)
		}
	},

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

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

	/**
	 * 校验身份证格式：18 位，前 17 位数字，末位数字或 X
	 */
	isIdCardValid(idCard: string): boolean {
		return /^\d{17}[\dX]$/.test(idCard)
	},

	/**
	 * 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 (!this.isIdCardValid(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}` }
	},

	/**
	 * 调用服务端接口校验身份证与姓名，成功后用接口返回的身份证重新计算性别年龄
	 * result 为 null 视为「查无此人」，标记 hasQueried 允许新增提交
	 * result.code 101 视为「信息已存在」，弹框提示并锁定表单
	 * result.code 102 视为正常，走原有逻辑
	 */
	fetchUserInfoByIdCard(name: string, idCard: string) {
		if (this.data.querying) return
		this.setData({ querying: true, serverResult: null, hasQueried: false })

		get<any>('weighingScale/v3/getUserInfoByIdcard', {
			sn: lefuService.deviceInfo?.serialNumber ?? '',
			idCard,
			realname: name
		}, { loading: false })
			.then(res => {
				const serverResult = res.result
				if (!serverResult) {
					this.setData({ hasQueried: true })
					return
				}
				if (serverResult.flag === 101) {
					const parsed = this.parseIdCard(serverResult.idCard)
					this.setData({
						serverResult,
						hasQueried: true,
						readonly: true,
						showConfirmModal: true,
						'form.name': serverResult.realname ?? '',
						'form.idCard': serverResult.idCard ?? '',
						'form.gender': parsed.gender,
						'form.age': parsed.age,
						'form.height': serverResult.height ? String(serverResult.height) : '',
						'form.weight': serverResult.weight ? String(serverResult.weight) : ''
					})
					return
				}
				if (serverResult.flag === null) {
					const parsed = this.parseIdCard(serverResult.idCard)
					const data: Record<string, any> = {
						serverResult,
						hasQueried: true,
						'form.gender': parsed.gender,
						'form.age': parsed.age
					}
					if (serverResult.height) {
						data['form.height'] = String(serverResult.height)
					}
					if (serverResult.weight) {
						data['form.weight'] = String(serverResult.weight)
					}
					this.setData(data)
				}
			})
			.catch(() => {
				// 查询失败保留本地解析结果，hasQueried 维持 false 以便用户重试时再次触发
			})
			.finally(() => {
				this.setData({ querying: false })
			})
	},

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

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

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

	/** 确认弹框 - 确认 */
	onConfirmModalConfirm() {
		this.setData({ showConfirmModal: false })
		this.onSubmit()
	},

	/** 确认弹框 - 取消 */
	onConfirmModalCancel() {
		this.setData({
			showConfirmModal: false,
			readonly: false,
			form: {
				name: '',
				idCard: '',
				gender: '',
				age: '',
				height: '',
				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
		}
		if (!this.data.hasQueried) {
			wx.showToast({ title: this.data.querying ? '身份信息验证中，请稍候' : '请检查姓名与身份证号', icon: 'none' })
			return
		}

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

		// selectedMember(抽屉选中) → serverResult(接口校验，可能为 null) → 表单/本地解析(用户输入) 依次覆盖
		const payload: Record<string, any> = {
			...(this.data.selectedMember ?? {}),
			...(serverResult ?? {}),
			parentUserId: userInfo?.userId ?? '',
			sn: lefuService.deviceInfo?.serialNumber ?? '',
			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' })
			})
	}
})