import ngModule from '../module';
import './style.scss';

class Controller {
    constructor($http, $scope, $state, $compile, $transitions) {
        this.$http = $http;
        this.$ = $scope;
        this.$state = $state;
        this.$stateParams = $state.params;
        this.$compile = $compile;
        this.$transitions = $transitions;
        this.itemTypes = [];
        this._tags = [];

        // Static autocomplete data
        this.orderWays = [
            {way: 'ASC', name: 'Ascendant'},
            {way: 'DESC', name: 'Descendant'},
        ];
        this.defaultOrderFields = [
            {field: 'relevancy DESC, name', name: 'Relevancy'},
            {field: 'showOrder, price', name: 'Color and price'},
            {field: 'name', name: 'Name'},
            {field: 'price', name: 'Price'}
        ];
        this.orderFields = [].concat(this.defaultOrderFields);
        this._orderWay = this.orderWays[0].way;
        this.orderField = this.orderFields[0].field;
    }

    $onChanges() {
        if (this.order && this.order.isConfirmed)
            this.$state.go('order.card.line');
    }

    /**
     * Fills order autocomplete with tags
     * obtained from last filtered
     */
    get order() {
        return this._order;
    }

    /**
     * Sets filter values from state params
     *
     * @param {Object} value - Order data
     */
    set order(value) {
        this._order = value;

        if (!value) return;

        this.$.$applyAsync(() => {
            if (this.$stateParams.itemId)
                this.itemId = parseInt(this.$stateParams.itemId);

            if (this.$stateParams.categoryId)
                this.categoryId = parseInt(this.$stateParams.categoryId);

            if (this.$stateParams.typeId)
                this.typeId = parseInt(this.$stateParams.typeId);

            if (this.$stateParams.tags)
                this.tags = JSON.parse(this.$stateParams.tags);
        });
    }

    get items() {
        return this._items;
    }

    set items(value) {
        this._items = value;

        if (!value) return;

        this.buildTagsFilter(value);
        this.buildOrderFilter(value);
    }

    get categoryId() {
        return this._categoryId;
    }

    set categoryId(value = null) {
        this._categoryId = value;
        this.itemTypes = [];
        this.typeId = null;

        this.updateStateParams();

        if (this.tags.length > 0)
            this.applyFilters();

        if (value)
            this.updateItemTypes();
    }

    changeCategory(id) {
        if (this._categoryId == id) id = null;
        this.categoryId = id;
    }

    get typeId() {
        return this._typeId;
    }

    set typeId(value) {
        this._typeId = value;

        this.updateStateParams();

        if (value || this.tags.length > 0)
            this.applyFilters();
    }

    get itemId() {
        return this._itemId;
    }

    set itemId(value) {
        this._itemId = value;

        this.updateStateParams();
        this.applyFilters();
    }

    get tags() {
        return this._tags;
    }

    set tags(value) {
        this._tags = value;

        this.updateStateParams();

        if (value.length)
            this.applyFilters();
    }

    /**
     * Get order way ASC/DESC
     */
    get orderWay() {
        return this._orderWay;
    }

    set orderWay(value) {
        this._orderWay = value;
        if (value) this.applyOrder();
    }

    /**
     * Returns the order way selection
     */
    get orderSelection() {
        return this._orderSelection;
    }

    set orderSelection(value) {
        this._orderSelection = value;

        if (value) this.applyOrder();
    }

    /**
     * Apply order to model
     */
    applyOrder() {
        if (this.typeId || this.tags.length > 0)
            this.$.model.addFilter(null, {orderBy: this.getOrderBy()});
    }

    /**
     * Returns order param
     *
     * @return {Object} - Order param
     */
    getOrderBy() {
        const isTag = !!(this.orderSelection && this.orderSelection.isTag);
        return {
            field: this.orderField,
            way: this.orderWay,
            isTag: isTag
        };
    }

    /**
     * Refreshes item type dropdown data
     */
    updateItemTypes() {
        let params = {
            itemCategoryId: this.categoryId
        };

        const query = `Orders/${this.order.id}/getItemTypeAvailable`;
        this.$http.get(query, {params}).then(res =>
            this.itemTypes = res.data);
    }

    /**
     * Search by item id filter
     * @param {object} event
     */
    onSearchById(event) {
        const value = this.$.itemId.value;
        if (event.key === 'Enter' && value) {
            this.itemId = value;
            this.$.itemId.value = null;
        }
    }

    /**
     * Search by tag value
     * @param {object} event
     */
    onSearchByTag(event) {
        const value = this.$.search.value;
        if (event.key !== 'Enter' || !value) return;
        this.tags.push({
            value: value,
        });
        this.$.search.value = null;
        this.updateStateParams();
        this.applyFilters();
    }

    remove(index) {
        this.tags.splice(index, 1);
        this.updateStateParams();

        if (this.tags.length >= 0 || this.itemId || this.typeId)
            this.applyFilters();
    }

    applyFilters() {
        let newParams = {};
        let newFilter = {};
        const model = this.$.model;

        if (this.categoryId)
            newFilter.categoryFk = this.categoryId;

        if (this.typeId)
            newFilter.typeFk = this.typeId;

        if (this.itemId)
            newFilter = {'i.id': this.itemId};

        newParams = {
            orderFk: this.order.id,
            orderBy: this.getOrderBy(),
            tags: this.tags,
        };

        model.applyFilter({where: newFilter}, newParams);
    }

    openPanel(event) {
        if (event.defaultPrevented) return;
        event.preventDefault();

        this.panelFilter = {};
        this.$.popover.show(this.$.search.element);
    }

    onPanelSubmit(filter) {
        this.$.popover.hide();
        this.tags.push(filter);
        this.updateStateParams();
        this.applyFilters();
    }

    /**
     * Updates url state params from filter values
     */
    updateStateParams() {
        const params = {};

        if (this.categoryId)
            params.categoryId = this.categoryId;
        else params.categoryId = undefined;

        if (this.typeId)
            params.typeId = this.typeId;
        else params.typeId = undefined;

        if (this.itemId)
            params.itemId = this.itemId;
        else params.itemId = undefined;

        if (this.tags.length) {
            const tags = [];
            for (let tag of this.tags) {
                const tagParam = {value: tag.value};

                if (tag.tagSelection) {
                    tagParam.tagFk = tag.tagFk;
                    tagParam.tagSelection = {
                        name: tag.tagSelection.name
                    };
                }

                tags.push(tagParam);
            }

            params.tags = JSON.stringify(tags);
        } else params.tags = undefined;

        this.$state.go(this.$state.current.name, params);
    }

    buildTagsFilter(items) {
        const tagValues = [];
        items.forEach(item => {
            item.tags.forEach(itemTag => {
                const alreadyAdded = tagValues.findIndex(tag => {
                    return tag.value == itemTag.value;
                });

                if (alreadyAdded == -1)
                    tagValues.push(itemTag);
            });
        });
        this.tagValues = tagValues;
    }

    buildOrderFilter(items) {
        const tags = [];
        items.forEach(item => {
            item.tags.forEach(itemTag => {
                const alreadyAdded = tags.findIndex(tag => {
                    return tag.field == itemTag.tagFk;
                });

                if (alreadyAdded == -1) {
                    tags.push({
                        name: itemTag.name,
                        field: itemTag.tagFk,
                        isTag: true
                    });
                }
            });
        });
        let newFilterList = [].concat(this.defaultOrderFields);
        newFilterList = newFilterList.concat(tags);
        this.orderFields = newFilterList;
    }
}

Controller.$inject = ['$http', '$scope', '$state', '$compile', '$transitions'];

ngModule.component('vnOrderCatalog', {
    template: require('./index.html'),
    controller: Controller,
    bindings: {
        order: '<'
    }
});