'use strict';

var _extends = object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (object.prototype.hasownproperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function page(config) {

    this.defaultconfig = {
        url: '',
        limit: 8,
        page: 1,
        moreelement: undefined,
        morecallback: undefined
    };
    this.cacheconfig = _extends({}, config || {});
    this.total = 0;
    this.list = [];
    this.config = _extends({}, this.defaultconfig, config || {});

    return this;
}
page.prototype.init = function () {
    var _this = this;

    this.bindscroll();
    return new promise(function (resolve, reject) {
        _this.get().then(function (data) {
            _this.total = data.total;
            //_this.list = _this.list.concat(data.list);
            _this.size = math.ceil(_this.total / _this.config.limit);
            resolve(_this.getreturn(data.list));

            _this.bindscrollevent();
        }, function (data) {
            reject(data);
        });
    });
};

page.prototype.bindscrollevent = function () {
    clearinterval(this.checktimer);
    this.checktimer = setinterval(this.checknext.bind(this), 300);
};

page.prototype.bindscroll = function () {
    this.moreelement = $(this.config.moreelement);
    this.moreelement.html('').append('\n    <div class="page-loading ing"><i></i>正在加载</div>\n    <div class="page-loading end"><i></i>到达最后</div>\n  ');

    this.moreelement.find('.ing').addclass('show');
    this.moreelement.find('.end').removeclass('show');
};

page.prototype.checknext = function () {
    var _this2 = this;

    var offset = $(window).scrolltop() + $(window).height() - this.moreelement.offset().top;

    if (offset > 50) {
        this.next().then(function (data) {
            if (typeof _this2.config.morecallback === 'function') {
                _this2.config.morecallback(data);
            }
        });
    }
};

page.prototype.getreturn = function (list) {
    return {
        list: list,
        full: this.list,
        total: this.total,
        size: this.size,
        page: this.config.page,
        limit: this.config.limit
    };
};

page.prototype.get = function () {
    var _this3 = this;

    return new promise(function (resolve, reject) {
        _this3.requesting = true;

        var data = _extends({}, _this3.config, {
            morecallback: null,
            moreelement: null
        });
        data.url = "";
        data.moreelement = "";
        data.morecallback = "";

        //alert(_this3.config.url)

        $.ajax({
            url: _this3.config.url,
            data: data,
            method: 'get',
            datatype: 'json'
        }).then(function (data) {
            resolve(data);
        }, function (data) {
            reject(data);
        }).done(function () {
            _this3.requesting = false;
        });
    });
};

page.prototype.reset = function (config) {
    this.config = _extends({}, this.config, this.defaultconfig, this.cacheconfig, config || {});
    this.init();
};

page.prototype.next = function () {
    var _this4 = this;

    if (this.requesting) {
        return new promise(function (resolve, reject) {
            settimeout(function () {
                reject();
            }, 0);
        });
    }
    if (this.config.page >= this.size) {
        return new promise(function (resolve, reject) {
            _this4.moreelement.find('.ing').removeclass('show');
            _this4.moreelement.find('.end').addclass('show');
            clearinterval(_this4.checktimer);

            settimeout(function () {
                reject();
            }, 0);
        });
    }

    this.config.page++;

    return new promise(function (resolve, reject) {
        _this4.get().then(function (data) {
            // _this4.list = _this4.list.concat(data.list);
            resolve(_this4.getreturn(data.list));
        }, function (data) {
            reject(data);
        });
    });
};