export default {
    onPullDownRefresh() {
        this.store && this.store.reload();
        this.store.loadedCallback = () => {
            uni.stopPullDownRefresh();
        };
    },
    onReachBottom() {
        if (this.store.status != 'noMore') {
            this.store.next && this.store.next();
        }
    },
    data() {
        return {
            store: {},
        };
    },
    methods: {
        DataSource(url) {
            var me = this;
            return {
                data: [],
                status: 'more',
                empty: false,
                total: 0,
                header: {
                    'Content-Type': 'application/json;charset=UTF-8',
                },
                params: {
                    pageNum: 1,
                    pageSize: 20,
                },
                reload() {
                    this.data = [];
                    this.status = 'loading';
                    this.empty = false;
                    this.params.pageNum = 1;
                    this.next();
                },
                callBack: null,
                firstCallBack: null,
                loadedCallback: null,
                next() {
                    me.$request({
                        url: url,
                        data: this.params,
                        header: this.header,
                        method: 'POST',
                    }).then((res) => {
                        console.warn(res);
                        let resultData =
                            res.data?.list || res.data?.records  || [];
                        if (this.params.pageNum == 1) {
                            this.data = resultData;
                            if (resultData.length == 0 || resultData == 0) {
                                this.empty = true;
                            } else if (
                                resultData.length < this.params.pageSize
                            ) {
                                this.status = 'noMore';
                            } else if (res.total == resultData.length) {
                                this.status = 'noMore';
                            }
                        } else {
                            this.data.push(...resultData);
                            if (resultData.length < this.params.pageSize) {
                                this.status = 'noMore';
                            }
                        }

                        if (this.params.pageNum == 1) {
                            this.firstCallBack && this.firstCallBack();
                        }
                        this.loadedCallback && this.loadedCallback();
                        this.params.pageNum++;
                        this.total = res.total;
                        this.loading = false;
                    });
                },
            };
        },
    },
};