import { ref, computed } from 'vue';
import { onShow, onUnload } from "@dcloudio/uni-app";
import { getChatStatus } from "@/api/corp/im.js";
import { getDoctorByDoctorId } from '@/api/doctor/doctor';
import { toast } from '@/utils/widget';
import dayjs from 'dayjs';

import useChatOrder from './chat-order-hook';


/**
 * 获取聊天室当前进行中业务hook
 * @param {string聊天群组ID} groupID 
 */
export default function useChatBusiness(groupID) {
	const groupInfo = ref({});

	const assistant = computed(() => {
		if (groupInfo.value.assistant?.memberAccount) {
			return { assistantId: groupInfo.value.assistant.memberAccount, name: groupInfo.value.assistant.name }
		}
		return null;
	})

	const doctor = computed(() => {
		// 优先返回从API获取的详细医生信息
		if (doctorInfo.value) {
			return doctorInfo.value;
		}
		// 如果详细信息还未加载，返回基本信息
		if (groupInfo.value.doctor?.memberAccount) {
			return { 
				doctorId: groupInfo.value.doctor.memberAccount, 
				name: groupInfo.value.doctor.name, 
				avatar: groupInfo.value.doctor.avatar 
			}
		}
		return null;
	})

	const patient = computed(() => {
		if (groupInfo.value.patient?.memberAccount) {
			return { openId: groupInfo.value.patient.memberAccount, name: groupInfo.value.patient.name, patientId: groupInfo.value.patient.patientId }
		}
		return null;
	})
	const chatMember = computed(() => {
		const res = {
			assistant: { name: '医生助理', avatar: '/static/assistant.png' }
		};
		if (assistant.value) {
			res[assistant.value.assistantId] = { name: `医生助理${assistant.value.name}`, avatar: '/static/assistant.png' };
		}
		if (doctor.value) {
			
			res[doctor.value.doctorId] = { name: `医生${doctor.value.name || ''}`, avatar: doctor.value.avatar || '/static/home/doctor.svg' };
		}
		if (patient.value) {
			res[patient.value.openId] = { name: '我' || `患者${patient.value.name}`, avatar: '/static/center/user-avatar.png' };
		}
		return res;
	})

	const chatRoomBusiness = computed(() => groupInfo.value.groupBusiness || {});
	const isPending = computed(() => groupInfo.value.status === 'active');
	const isClosed = computed(() => !isPending.value);
	const doctorInfo = ref(null) // 医生信息

	const orderId = computed(() => {
		return chatRoomBusiness.value.businessType === 'consultation' ? chatRoomBusiness.value.businessId : ''
	})

	const { currentOrder, chatRoomStatus, countdown, getCurrentOrder } = useChatOrder(orderId)

	const chatRoomCountDown = ref('') // 会话倒计时
	const showCountdown = computed(() => {
		const isPendingOrder = currentOrder.value && chatRoomStatus.value.isPending && orderId.value == currentOrder.value.orderId;
		const isRefill = chatRoomBusiness.value.businessType === 'refill_prescription'
		return chatRoomCountDown.value && (isPendingOrder || isRefill)
	})

	async function getChatBusiness() {
		if (!groupID.value) return;
		const res = await getChatStatus(groupID.value);
		if (res && res.success) {
			groupInfo.value = res.data;
			setCountdown()
			getDoctor()
		} else {
			await toast('获取聊天室业务失败')
			uni.navigateBack()
		}
	}

	function setCountdown() {
		if (isPending.value && groupInfo.value.expireTime && dayjs(groupInfo.value.expireTime).isAfter(dayjs())) {
			if (getApp().chatRoomCountDownTimer) clearInterval(getApp().chatRoomCountDownTimer);
			getApp().chatRoomCountDownTimer = setInterval(() => {
				const now = dayjs();
				const endTime = dayjs(groupInfo.value.expireTime);
				const diff = endTime.diff(now, 'second');
				if (diff <= 0) {
					clearCountdown();
					getChatBusiness()
					return;
				}
				// 计算剩余时分秒
				const hours = Math.floor(diff / 3600);
				const minutes = Math.floor((diff % 3600) / 60);
				const seconds = diff % 60;

				const pad = n => n.toString().padStart(2, '0');
				chatRoomCountDown.value = `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`.replace(/^00\:/, '');
			}, 1000)
		} else {
			clearCountdown()
		}
	}

	function clearCountdown() {
		if (getApp().chatRoomCountDownTimer) {
			clearInterval(getApp().chatRoomCountDownTimer);
			getApp().chatRoomCountDownTimer = null;
		}
		chatRoomCountDown.value = ''
	}

	async function getDoctor() {
		const doctorId = groupInfo.value.doctor?.memberAccount;
		if (doctorId && (!doctorInfo.value || doctorInfo.value.doctorId !== doctorId)) {
			const res = await getDoctorByDoctorId(doctorId)
			doctorInfo.value = res && res.data ? res.data : null;
		}
	}

	onUnload(() => {
		clearCountdown()
	})

	onShow(() => {
		getChatBusiness()
	})


	return { chatRoomBusiness, getChatBusiness, currentOrder, chatRoomStatus, countdown, getCurrentOrder, chatRoomCountDown, showCountdown, doctorInfo, isClosed, chatMember }
}