/**
 * Created by zcf on 2016/12/14.
 */
BI.MultiStringList = BI.inherit(BI.Widget, {
    _defaultConfig: function () {
        return BI.extend(BI.MultiStringList.superclass._defaultConfig.apply(this, arguments), {
            baseCls: 'bi-multi-string-list',
            itemsCreator: BI.emptyFn,
            valueFormatter: BI.emptyFn,
            height: 25
        })
    },
    _init: function () {
        BI.MultiStringList.superclass._init.apply(this, arguments);

        var self = this, o = this.options;

        var assertShowValue = function () {
            BI.isKey(self._startValue) && self.storeValue.value[self.storeValue.type === BI.Selection.All ? "remove" : "pushDistinct"](self._startValue);
            self.trigger.getSearcher().setState(self.storeValue);
            self.trigger.getCounter().setButtonChecked(self.storeValue);
        };
        this.storeValue = {};


        this.popup = BI.createWidget({
            type: "bi.multi_select_loader",
            cls: "popup-multi-string-list bi-border-left bi-border-right bi-border-bottom",
            itemsCreator: o.itemsCreator,
            valueFormatter: o.valueFormatter,
            onLoaded: o.onLoaded,
            el: {
                height: ""
            }
        });
        this.popup.on(BI.MultiSelectLoader.EVENT_CHANGE, function () {
            self.storeValue = this.getValue();
            self._adjust(function () {
                assertShowValue();
                self.fireEvent(BI.MultiStringList.EVENT_CHANGE);
            });
        });

        this.trigger = BI.createWidget({
            type: "bi.multi_select_trigger",
            height: o.height,
            adapter: this.popup,
            masker: {
                offset: {
                    left: 1,
                    top: 0,
                    right: 2,
                    bottom: 1
                }
            },
            valueFormatter: o.valueFormatter,
            itemsCreator: function (op, callback) {
                o.itemsCreator(op, function (res) {
                    if (op.times === 1 && BI.isNotNull(op.keyword)) {
                        self.trigger.setValue(self.getValue());
                    }
                    callback.apply(self, arguments);
                });
            }
        });

        this.trigger.on(BI.MultiSelectTrigger.EVENT_START, function () {
            self._setStartValue("");
            this.getSearcher().setValue(self.storeValue);
        });
        this.trigger.on(BI.MultiSelectTrigger.EVENT_STOP, function () {
            self._setStartValue("");
        });
        this.trigger.on(BI.MultiSelectTrigger.EVENT_PAUSE, function () {
            if (this.getSearcher().hasMatched()) {
                var keyword = this.getSearcher().getKeyword();
                self._join({
                    type: BI.Selection.Multi,
                    value: [keyword]
                }, function () {
                    self.trigger.setValue(self.storeValue);
                    self.popup.setValue(self.storeValue);
                    self._setStartValue(keyword);
                    assertShowValue();
                    self.populate();
                    self._setStartValue("");
                    self.fireEvent(BI.MultiStringList.EVENT_CHANGE);
                })
            }
        });
        this.trigger.on(BI.MultiSelectTrigger.EVENT_SEARCHING, function (keywords) {
            var last = BI.last(keywords);
            keywords = BI.initial(keywords || []);
            if (keywords.length > 0) {
                self._joinKeywords(keywords, function () {
                    if (BI.isEndWithBlank(last)) {
                        self.trigger.setValue(self.storeValue);
                        self.popup.setValue(self.storeValue);
                        assertShowValue();
                        self.popup.populate();
                        self._setStartValue("");
                    } else {
                        self.trigger.setValue(self.storeValue);
                        self.popup.setValue(self.storeValue);
                        assertShowValue();
                    }
                });
            }
        });

        this.trigger.on(BI.MultiSelectTrigger.EVENT_CHANGE, function (value, obj) {
            if (obj instanceof BI.MultiSelectBar) {
                self._joinAll(this.getValue(), function () {
                    assertShowValue();
                });
            } else {
                self._join(this.getValue(), function () {//安徽省 北京
                    assertShowValue();
                });
            }
        });
        this.trigger.on(BI.MultiSelectTrigger.EVENT_BEFORE_COUNTER_POPUPVIEW, function () {
            this.getCounter().setValue(self.storeValue);
        });
        var div = BI.createWidget({
            type: "bi.layout"
        });
        BI.createWidget({
            type: "bi.vtape",
            element: this,
            height: "100%",
            width: "100%",
            items: [{
                el: this.trigger,
                height: 25
            }, {
                el: div,
                height: 2
            }, {
                el: this.popup,
                height: "fill"
            }]
        });
    },
    _defaultState: function () {
        this.trigger.stopEditing();
    },

    _assertValue: function (val) {
        val || (val = {});
        val.type || (val.type = BI.Selection.Multi);
        val.value || (val.value = []);
    },

    _makeMap: function (values) {
        return BI.makeObject(values || []);
    },

    _joinKeywords: function (keywords, callback) {
        var self = this, o = this.options;
        this._assertValue(this.storeValue);
        if (!this._allData) {
            o.itemsCreator({
                type: BI.MultiStringList.REQ_GET_ALL_DATA
            }, function (ob) {
                self._allData = BI.pluck(ob.items, "value");
                digest(self._allData);
            })
        } else {
            digest(this._allData)
        }

        function digest(items) {
            var selectedMap = self._makeMap(items);
            BI.each(keywords, function (i, val) {
                if (BI.isNotNull(selectedMap[val])) {
                    self.storeValue.value[self.storeValue.type === BI.Selection.Multi ? "pushDistinct" : "remove"](val);
                }
            });
            self._adjust(callback);
        }
    },

    _joinAll: function (res, callback) {
        var self = this, o = this.options;
        this._assertValue(res);
        o.itemsCreator({
            type: BI.MultiStringList.REQ_GET_ALL_DATA,
            keyword: this.trigger.getKey()
        }, function (ob) {
            var items = BI.pluck(ob.items, "value");
            if (self.storeValue.type === res.type) {
                var change = false;
                var map = self._makeMap(self.storeValue.value);
                BI.each(items, function (i, v) {
                    if (BI.isNotNull(map[v])) {
                        change = true;
                        delete map[v];
                    }
                });
                change && (self.storeValue.value = BI.values(map));
                self._adjust(callback);
                return;
            }
            var selectedMap = self._makeMap(self.storeValue.value);
            var notSelectedMap = self._makeMap(res.value);
            var newItems = [];
            BI.each(items, function (i, item) {
                if (BI.isNotNull(selectedMap[items[i]])) {
                    delete selectedMap[items[i]];
                }
                if (BI.isNull(notSelectedMap[items[i]])) {
                    newItems.push(item);
                }
            });
            self.storeValue.value = newItems.concat(BI.values(selectedMap));
            self._adjust(callback);
        })
    },

    _adjust: function (callback) {
        var self = this, o = this.options;
        if (!this._count) {
            o.itemsCreator({
                type: BI.MultiStringList.REQ_GET_DATA_LENGTH
            }, function (res) {
                self._count = res.count;
                adjust();
                callback();
            });
        } else {
            adjust();
            callback();
        }
        function adjust() {
            if (self.storeValue.type === BI.Selection.All && self.storeValue.value.length >= self._count) {
                self.storeValue = {
                    type: BI.Selection.Multi,
                    value: []
                }
            } else if (self.storeValue.type === BI.Selection.Multi && self.storeValue.value.length >= self._count) {
                self.storeValue = {
                    type: BI.Selection.All,
                    value: []
                }
            }
        }
    },

    _join: function (res, callback) {
        var self = this, o = this.options;
        this._assertValue(res);
        this._assertValue(this.storeValue);
        if (this.storeValue.type === res.type) {
            var map = this._makeMap(this.storeValue.value);
            BI.each(res.value, function (i, v) {
                if (!map[v]) {
                    self.storeValue.value.push(v);
                    map[v] = v;
                }
            });
            var change = false;
            BI.each(res.assist, function (i, v) {
                if (BI.isNotNull(map[v])) {
                    change = true;
                    delete map[v];
                }
            });
            change && (this.storeValue.value = BI.values(map));
            self._adjust(callback);
            return;
        }
        this._joinAll(res, callback);
    },

    _setStartValue: function (value) {
        this._startValue = value;
        this.popup.setStartValue(value);
    },

    // isAllSelected: function () {
    //     return this.popup.isAllSelected();
    // },

    resize: function () {
        this.trigger.getCounter().adjustView();
        this.trigger.getSearcher().adjustView();
    },

    setValue: function (v) {
        this.storeValue = v || {};
        this._assertValue(this.storeValue);
        this.popup.setValue(this.storeValue);
        this.trigger.setValue(this.storeValue);
    },

    getValue: function () {
        return this.storeValue;
    },

    populate: function () {
        this._count = null;
        this._allData = null;
        this.popup.populate.apply(this.popup, arguments);
        this.trigger.populate.apply(this.trigger, arguments);
    }
});

BI.extend(BI.MultiStringList, {
    REQ_GET_DATA_LENGTH: 0,
    REQ_GET_ALL_DATA: -1
});

BI.MultiStringList.EVENT_CHANGE = "BI.MultiStringList.EVENT_CHANGE";
BI.shortcut("bi.multi_string_list", BI.MultiStringList);