import { reactive, computed, toRefs } from 'vue'
import { BuyOrSell } from '@/constants/order'
import { queryTradePosition } from '@/services/api/order'
import { useFuturesStore } from './futures'
import { defineStore } from '../store'
import eventBus from '@/services/bus'

/**
 * 持仓存储对象
 */
const useStore = defineStore(() => {
    const futuresStore = useFuturesStore()
    const state = reactive({
        loading: false,
        tradeMode: 0,
        orderPositionList: <Model.TradePositionRsp[]>[], // 持仓汇总列表
    })

    // 获取持仓汇总列表
    const getTradePosition = async () => {
        try {
            state.loading = true
            const res = await queryTradePosition()
            state.orderPositionList = res.data
        } finally {
            state.loading = false
        }
    }

    // 持仓汇总计算列表
    const orderPositionComputedList = computed(() => {
        const result: (Model.TradePositionRsp & {
            closepl: number; // 参考损益
        })[] = []

        state.orderPositionList.forEach((item) => {
            const lastPrice = futuresStore.getQuotePrice(item.goodscode)

            // 计算参考损益
            const closepl = (lastPrice.value * item.curpositionqty * item.agreeunit - item.curholderamount) * (item.buyorsell === BuyOrSell.Buy ? 1 : -1)

            result.push({
                ...item,
                closepl,
            })
        })

        return result
    })

    const orderPositionList = computed(() => {
        if (state.tradeMode) {
            return orderPositionComputedList.value.filter((e) => e.trademode === state.tradeMode)
        }
        return orderPositionComputedList.value
    })

    // 获取持仓数量
    const getOrderQty = (buyOrSell: BuyOrSell, goodsCode: string) => {
        return computed(() => {
            const item = state.orderPositionList.find((e) => e.goodscode === goodsCode && e.buyorsell === buyOrSell)
            return item?.enableqty ?? 0
        })
    }

    // 接收持仓变化通知
    const posChangedNtf = eventBus.$on('PosChangedNtf', () => getTradePosition())

    return {
        ...toRefs(state),
        getTradePosition,
        getOrderQty,
        orderPositionList,
        posChangedNtf,
    }
})

export const usePositionStore = (tradeMode = 0) => {
    const store = useStore()
    store.tradeMode = tradeMode
    return store
}