import { Component, Input, OnChanges } from '@angular/core';

import { DataTable } from './DataTable';

import * as _ from 'lodash';

@Component({
    selector: 'sv-bootstrap-paginator',
    template: `
    <sv-paginator #p [svTable]="svTable">
        <div class="row">

            <div class="col-md-10">
                <ul class="pagination" *ngIf="p.dataLength > p.rowsOnPage">
                    <li class="page-item" [class.disabled]="p.activePage <= 1" (click)="p.setPage(1)">
                        <a class="page-link" style="cursor: pointer">&laquo;</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage > 4 && p.activePage + 1 > p.lastPage" (click)="p.setPage(p.activePage - 4)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage-4}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage > 3 && p.activePage + 2 > p.lastPage" (click)="p.setPage(p.activePage - 3)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage-3}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage > 2" (click)="p.setPage(p.activePage - 2)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage-2}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage > 1" (click)="p.setPage(p.activePage - 1)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage-1}}</a>
                    </li>
                    <li class="page-item active">
                        <a class="page-link" style="cursor: pointer">{{p.activePage}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage + 1 <= p.lastPage" (click)="p.setPage(p.activePage + 1)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage+1}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage + 2 <= p.lastPage" (click)="p.setPage(p.activePage + 2)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage+2}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage + 3 <= p.lastPage && p.activePage < 3" (click)="p.setPage(p.activePage + 3)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage+3}}</a>
                    </li>
                    <li class="page-item" *ngIf="p.activePage + 4 <= p.lastPage && p.activePage < 2" (click)="p.setPage(p.activePage + 4)">
                        <a class="page-link" style="cursor: pointer">{{p.activePage+4}}</a>
                    </li>
                    <li class="page-item" [class.disabled]="p.activePage >= p.lastPage" (click)="p.setPage(p.lastPage)">
                        <a class="page-link" style="cursor: pointer">&raquo;</a>
                    </li>
                </ul>
            </div>

            <div class="col-md-2 pull-right float-sm-right">
                <ul class="pagination pull-right float-sm-right" *ngIf="p.dataLength > minRowsOnPage">
                    <li class="page-item" *ngFor="let rows of rowsOnPageSet" [class.active]="p.rowsOnPage===rows" (click)="p.setRowsOnPage(rows)">
                        <a class="page-link" style="cursor: pointer">{{rows}}</a>
                    </li>
                </ul>
            </div>

        </div>
    </sv-paginator>
    `
})
export class BootstrapPaginator implements OnChanges {

    @Input("rowsOnPageSet") rowsOnPageSet = [];
    @Input("svTable") svTable: DataTable;

    public minRowsOnPage = 0;

    ngOnChanges(changes: any): any {
        if (changes.rowsOnPageSet) {
            this.minRowsOnPage = _.min(this.rowsOnPageSet)
        }
    }

}