import { Table } from "./interface";
import { reactive, computed, toRefs } from "vue";
import $Bus from "@/utils/mittBus";

/**
 * @description table 页面操作方法封装
 * @param {Function} api 获取表格数据 api 方法 (必传)
 * @param {Object} initParam 获取数据初始化参数 (非必传，默认为{})
 * @param {Boolean} isPageable 是否有分页 (非必传，默认为true)
 * @param {Function} dataCallBack 对后台返回的数据进行处理的方法 (非必传)
 * */
export const useTable = (
    routeName: any,
    api?: (params: any) => Promise<any>,
    initParam: object = {},
    isPageable: boolean = true,
    dataCallBack?: (data: any) => any,
    requestError?: (error: any) => void,
    clearSelection?: () => void
) => {
    const state = reactive<Table.StateProps>({
        // 表格数据
        tableData: [],
        // 分页数据
        pageable: {
            // 当前页数
            page: 1,
            // 每页显示条数
            size: 50,
            // 总条数
            total: 0
        },
        // 查询参数(只包括查询)
        searchParam: {},
        // 初始化默认的查询参数
        searchInitParam: {},
        // 总参数(包含分页和查询参数)
        totalParam: {}
    });

    /**
     * @description 分页查询参数(只包括分页和表格字段排序,其他排序方式可自行配置)
     * */
    const pageParam = computed({
        get: () => {
            return {
                page: state.pageable.page,
                size: state.pageable.size
            };
        },
        set: (newVal: any) => {
            console.log("我是分页更新之后的值", newVal);
        }
    });

    /**
     * @description 获取表格数据
     * @return void
     * */
    const getTableList = async () => {
        if (!api) return;
        try {
            // 先把初始化参数和分页参数放到总参数里面 initParam
            Object.assign(state.totalParam, isPageable ? pageParam.value : {});
            let { data } = await api({ ...state.searchInitParam, ...initParam, ...state.totalParam });
            const { total } = data;
            state.tableData = data.data;

            clearSelection && clearSelection();
            // 解构后台返回的分页数据 (如果有分页更新分页信息)
            if (isPageable) {
                updatePageable({ page: state.pageable.page, size: state.pageable.size, total });
            }

            // dataCallBack && (data = dataCallBack(data));
        } catch (error) {
            requestError && requestError(error);
        }
    };

    /**
     * @description 更新查询参数
     * @return void
     * */
    const updatedTotalParam = () => {
        state.totalParam = {};
        // 处理查询参数，可以给查询参数加自定义前缀操作
        let nowSearchParam: Table.StateProps["searchParam"] = {};
        // 防止手动清空输入框携带参数（这里可以自定义查询参数前缀）
        console.log(state.searchParam, "=state.searchParam=");
        for (let key in state.searchParam) {
            //剔除日期参数
            if (key !== "Time" && key !== "Time1" && key !== "treeIds") {
                // * 某些情况下参数为 false/0 也应该携带参数
                if (state.searchParam[key] || state.searchParam[key] === false || state.searchParam[key] === 0) {
                    nowSearchParam[key] = state.searchParam[key];
                }
            }
        }

        Object.assign(state.totalParam, nowSearchParam, isPageable ? pageParam.value : {});
    };

    /**
     * @description 更新分页信息
     * @param {Object} pageable 后台返回的分页数据
     * @return void
     * */
    const updatePageable = (pageable: Table.Pageable) => {
        Object.assign(state.pageable, pageable);
    };

    /**
     * @description 表格数据查询
     * @return void
     * */
    const search = () => {
        state.pageable.page = 1;
        state.pageable.size = 50;
        updatedTotalParam();
        getTableList();
    };

    /**
     * @description 表格数据重置
     * @return void
     * */
    const reset = () => {
        state.pageable.page = 1;
        state.searchParam = {};
        // 重置搜索表单的时，如果有默认搜索参数，则重置默认的搜索参数
        Object.keys(state.searchInitParam).forEach(key => {
            state.searchParam[key] = state.searchInitParam[key];
        });

        if (routeName === "barCode") {
            $Bus.emit("clearBarCodeCreateUser");
        }
        if (routeName === "boxCode") {
            $Bus.emit("clearBoxCodeCreateUser");
        }
        if (routeName === "boxMarkIndex") {
            $Bus.emit("clearBoxMarkIndexCreator");
        }
        updatedTotalParam();
        getTableList();
    };

    /**
     * @description 每页条数改变
     * @param {Number} val 当前条数
     * @return void
     * */
    const handleSizeChange = (val: number) => {
        state.pageable.page = 1;
        state.pageable.size = val;
        getTableList();
    };

    /**
     * @description 当前页改变
     * @param {Number} val 当前页
     * @return void
     * */
    const handleCurrentChange = (val: number) => {
        state.pageable.page = val;
        getTableList();
    };

    return {
        ...toRefs(state),
        getTableList,
        search,
        reset,
        handleSizeChange,
        handleCurrentChange,
        updatedTotalParam
    };
};