import { EventEmitter, Component, ChangeDetectionStrategy, ViewEncapsulation, ElementRef, ChangeDetectorRef, Input, Output, ContentChild, ContentChildren, NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { ObjectUtils, FilterUtils } from 'primeng/utils';
import { Header, Footer, PrimeTemplate, SharedModule } from 'primeng/api';
import { PaginatorModule } from 'primeng/paginator';

class DataView {
    constructor(el, cd) {
        this.el = el;
        this.cd = cd;
        this.layout = 'list';
        this.pageLinks = 5;
        this.paginatorPosition = 'bottom';
        this.alwaysShowPaginator = true;
        this.paginatorDropdownScrollHeight = '200px';
        this.currentPageReportTemplate = '{currentPage} of {totalPages}';
        this.showPageLinks = true;
        this.emptyMessage = 'No records found';
        this.onLazyLoad = new EventEmitter();
        this.trackBy = (index, item) => item;
        this.loadingIcon = 'pi pi-spinner';
        this.first = 0;
        this.onPage = new EventEmitter();
        this.onSort = new EventEmitter();
        this.onChangeLayout = new EventEmitter();
    }
    ngOnInit() {
        if (this.lazy) {
            this.onLazyLoad.emit(this.createLazyLoadMetadata());
        }
        this.initialized = true;
    }
    ngOnChanges(simpleChanges) {
        if (simpleChanges.value) {
            this._value = simpleChanges.value.currentValue;
            this.updateTotalRecords();
            if (!this.lazy && this.hasFilter()) {
                this.filter(this.filterValue);
            }
        }
        if (simpleChanges.sortField || simpleChanges.sortOrder) {
            //avoid triggering lazy load prior to lazy initialization at onInit
            if (!this.lazy || this.initialized) {
                this.sort();
            }
        }
    }
    ngAfterContentInit() {
        this.templates.forEach((item) => {
            switch (item.getType()) {
                case 'listItem':
                    this.listItemTemplate = item.template;
                    break;
                case 'gridItem':
                    this.gridItemTemplate = item.template;
                    break;
                case 'paginatorleft':
                    this.paginatorLeftTemplate = item.template;
                    break;
                case 'paginatorright':
                    this.paginatorRightTemplate = item.template;
                    break;
                case 'header':
                    this.headerTemplate = item.template;
                    break;
                case 'footer':
                    this.footerTemplate = item.template;
                    break;
            }
        });
        this.updateItemTemplate();
    }
    updateItemTemplate() {
        switch (this.layout) {
            case 'list':
                this.itemTemplate = this.listItemTemplate;
                break;
            case 'grid':
                this.itemTemplate = this.gridItemTemplate;
                break;
        }
    }
    changeLayout(layout) {
        this.layout = layout;
        this.onChangeLayout.emit({
            layout: this.layout
        });
        this.updateItemTemplate();
        this.cd.markForCheck();
    }
    updateTotalRecords() {
        this.totalRecords = this.lazy ? this.totalRecords : (this._value ? this._value.length : 0);
    }
    paginate(event) {
        this.first = event.first;
        this.rows = event.rows;
        if (this.lazy) {
            this.onLazyLoad.emit(this.createLazyLoadMetadata());
        }
        this.onPage.emit({
            first: this.first,
            rows: this.rows
        });
    }
    sort() {
        this.first = 0;
        if (this.lazy) {
            this.onLazyLoad.emit(this.createLazyLoadMetadata());
        }
        else if (this.value) {
            this.value.sort((data1, data2) => {
                let value1 = ObjectUtils.resolveFieldData(data1, this.sortField);
                let value2 = ObjectUtils.resolveFieldData(data2, this.sortField);
                let result = null;
                if (value1 == null && value2 != null)
                    result = -1;
                else if (value1 != null && value2 == null)
                    result = 1;
                else if (value1 == null && value2 == null)
                    result = 0;
                else if (typeof value1 === 'string' && typeof value2 === 'string')
                    result = value1.localeCompare(value2);
                else
                    result = (value1 < value2) ? -1 : (value1 > value2) ? 1 : 0;
                return (this.sortOrder * result);
            });
            if (this.hasFilter()) {
                this.filter(this.filterValue);
            }
        }
        this.onSort.emit({
            sortField: this.sortField,
            sortOrder: this.sortOrder
        });
    }
    isEmpty() {
        let data = this.filteredValue || this.value;
        return data == null || data.length == 0;
    }
    createLazyLoadMetadata() {
        return {
            first: this.first,
            rows: this.rows,
            sortField: this.sortField,
            sortOrder: this.sortOrder
        };
    }
    getBlockableElement() {
        return this.el.nativeElement.children[0];
    }
    filter(filter, filterMatchMode = "contains") {
        this.filterValue = filter;
        if (this.value && this.value.length) {
            let searchFields = this.filterBy.split(',');
            this.filteredValue = FilterUtils.filter(this.value, searchFields, filter, filterMatchMode, this.filterLocale);
            if (this.filteredValue.length === this.value.length) {
                this.filteredValue = null;
            }
            if (this.paginator) {
                this.first = 0;
                this.totalRecords = this.filteredValue ? this.filteredValue.length : this.value ? this.value.length : 0;
            }
            this.cd.markForCheck();
        }
    }
    hasFilter() {
        return this.filterValue && this.filterValue.trim().length > 0;
    }
}
DataView.decorators = [
    { type: Component, args: [{
                selector: 'p-dataView',
                template: `
        <div [ngClass]="{'p-dataview p-component': true, 'p-dataview-list': (layout === 'list'), 'p-dataview-grid': (layout === 'grid')}" [ngStyle]="style" [class]="styleClass">
            <div class="p-dataview-loading" *ngIf="loading">
                <div class="p-dataview-loading-overlay p-component-overlay">
                    <i [class]="'p-dataview-loading-icon pi-spin ' + loadingIcon"></i>
                </div>
            </div>
            <div class="p-dataview-header" *ngIf="header || headerTemplate">
                <ng-content select="p-header"></ng-content>
                <ng-container *ngTemplateOutlet="headerTemplate"></ng-container>
            </div>
            <p-paginator [rows]="rows" [first]="first" [totalRecords]="totalRecords" [pageLinkSize]="pageLinks" [alwaysShow]="alwaysShowPaginator"
                (onPageChange)="paginate($event)" styleClass="p-paginator-top" [rowsPerPageOptions]="rowsPerPageOptions" *ngIf="paginator && (paginatorPosition === 'top' || paginatorPosition =='both')"
                [dropdownAppendTo]="paginatorDropdownAppendTo" [dropdownScrollHeight]="paginatorDropdownScrollHeight" [templateLeft]="paginatorLeftTemplate" [templateRight]="paginatorRightTemplate"
                [currentPageReportTemplate]="currentPageReportTemplate" [showCurrentPageReport]="showCurrentPageReport" [showJumpToPageDropdown]="showJumpToPageDropdown" [showPageLinks]="showPageLinks"></p-paginator>
            <div class="p-dataview-content">
                <div class="p-grid p-nogutter">
                    <ng-template ngFor let-rowData let-rowIndex="index" [ngForOf]="paginator ? ((filteredValue||value) | slice:(lazy ? 0 : first):((lazy ? 0 : first) + rows)) : (filteredValue||value)" [ngForTrackBy]="trackBy">
                        <ng-container *ngTemplateOutlet="itemTemplate; context: {$implicit: rowData, rowIndex: rowIndex}"></ng-container>
                    </ng-template>
                    <div *ngIf="isEmpty()" class="p-col">
                        <div class="p-dataview-emptymessage">{{emptyMessage}}</div>
                    </div>
                </div>
            </div>
            <p-paginator [rows]="rows" [first]="first" [totalRecords]="totalRecords" [pageLinkSize]="pageLinks" [alwaysShow]="alwaysShowPaginator"
                (onPageChange)="paginate($event)" styleClass="p-paginator-bottom" [rowsPerPageOptions]="rowsPerPageOptions" *ngIf="paginator && (paginatorPosition === 'bottom' || paginatorPosition =='both')"
                [dropdownAppendTo]="paginatorDropdownAppendTo" [dropdownScrollHeight]="paginatorDropdownScrollHeight" [templateLeft]="paginatorLeftTemplate" [templateRight]="paginatorRightTemplate"
                [currentPageReportTemplate]="currentPageReportTemplate" [showCurrentPageReport]="showCurrentPageReport" [showJumpToPageDropdown]="showJumpToPageDropdown" [showPageLinks]="showPageLinks"></p-paginator>
            <div class="p-dataview-footer" *ngIf="footer || footerTemplate">
                <ng-content select="p-footer"></ng-content>
                <ng-container *ngTemplateOutlet="footerTemplate"></ng-container>
            </div>
        </div>
    `,
                changeDetection: ChangeDetectionStrategy.OnPush,
                encapsulation: ViewEncapsulation.None,
                styles: [".p-dataview{position:relative}.p-dataview .p-dataview-loading-overlay{-ms-flex-align:center;-ms-flex-pack:center;align-items:center;display:-ms-flexbox;display:flex;justify-content:center;position:absolute;z-index:2}"]
            },] }
];
DataView.ctorParameters = () => [
    { type: ElementRef },
    { type: ChangeDetectorRef }
];
DataView.propDecorators = {
    layout: [{ type: Input }],
    paginator: [{ type: Input }],
    rows: [{ type: Input }],
    totalRecords: [{ type: Input }],
    pageLinks: [{ type: Input }],
    rowsPerPageOptions: [{ type: Input }],
    paginatorPosition: [{ type: Input }],
    alwaysShowPaginator: [{ type: Input }],
    paginatorDropdownAppendTo: [{ type: Input }],
    paginatorDropdownScrollHeight: [{ type: Input }],
    currentPageReportTemplate: [{ type: Input }],
    showCurrentPageReport: [{ type: Input }],
    showJumpToPageDropdown: [{ type: Input }],
    showPageLinks: [{ type: Input }],
    lazy: [{ type: Input }],
    emptyMessage: [{ type: Input }],
    onLazyLoad: [{ type: Output }],
    style: [{ type: Input }],
    styleClass: [{ type: Input }],
    trackBy: [{ type: Input }],
    filterBy: [{ type: Input }],
    filterLocale: [{ type: Input }],
    loading: [{ type: Input }],
    loadingIcon: [{ type: Input }],
    first: [{ type: Input }],
    sortField: [{ type: Input }],
    sortOrder: [{ type: Input }],
    value: [{ type: Input }],
    onPage: [{ type: Output }],
    onSort: [{ type: Output }],
    onChangeLayout: [{ type: Output }],
    header: [{ type: ContentChild, args: [Header,] }],
    footer: [{ type: ContentChild, args: [Footer,] }],
    templates: [{ type: ContentChildren, args: [PrimeTemplate,] }]
};
class DataViewLayoutOptions {
    constructor(dv) {
        this.dv = dv;
    }
    changeLayout(event, layout) {
        this.dv.changeLayout(layout);
        event.preventDefault();
    }
}
DataViewLayoutOptions.decorators = [
    { type: Component, args: [{
                selector: 'p-dataViewLayoutOptions',
                template: `
        <div [ngClass]="'p-dataview-layout-options p-selectbutton p-buttonset'" [ngStyle]="style" [class]="styleClass">
            <button type="button" class="p-button p-button-icon-only" [ngClass]="{'p-highlight': dv.layout === 'list'}" (click)="changeLayout($event, 'list')" (keydown.enter)="changeLayout($event, 'list')">
                <i class="pi pi-bars"></i>
            </button><button type="button" class="p-button p-button-icon-only" [ngClass]="{'p-highlight': dv.layout === 'grid'}" (click)="changeLayout($event, 'grid')" (keydown.enter)="changeLayout($event, 'grid')">
                <i class="pi pi-th-large"></i>
            </button>
        </div>
    `,
                encapsulation: ViewEncapsulation.None
            },] }
];
DataViewLayoutOptions.ctorParameters = () => [
    { type: DataView }
];
DataViewLayoutOptions.propDecorators = {
    style: [{ type: Input }],
    styleClass: [{ type: Input }]
};
class DataViewModule {
}
DataViewModule.decorators = [
    { type: NgModule, args: [{
                imports: [CommonModule, SharedModule, PaginatorModule],
                exports: [DataView, SharedModule, DataViewLayoutOptions],
                declarations: [DataView, DataViewLayoutOptions]
            },] }
];

/**
 * Generated bundle index. Do not edit.
 */

export { DataView, DataViewLayoutOptions, DataViewModule };
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