import { Component, Input, OnInit, Output, EventEmitter } from '@angular/core';

@Component({
    selector: 'pagination',
    templateUrl: './pagination.component.html',
    styleUrls: ['./pagination.component.css']
})
export class PaginationComponent implements OnInit {
    @Input() count: number =10;
    @Input() current: number = 1;
    @Input() range: number = 3;

    pages(): number[] {
        let array: number[] = [];

        let start = this.current - this.range;
        let end = this.current + this.range;

        if (start < 1) start = 1;
        if (end > this.count) end = this.count

        for (let i = start; i <= end; i++) array.push(i);
        return array;
    }

    first() { this.current = 1; }
    prev() { if (this.current > 1) this.current--; }
    goto(page: number) { this.current = page; }
    next() { if (this.current < this.count) this.current++; }
    last() { this.current = this.count; }
    ngOnInit(): void { }
}