// NG2
import { Component, ElementRef, ViewChild, ViewContainerRef, OnInit, Input, OnDestroy } from '@angular/core';
import { FormGroup } from '@angular/forms';
// Vendor
import 'rxjs/add/operator/debounceTime';
import 'rxjs/add/operator/distinctUntilChanged';
// APP
import { BaseRenderer } from './../base-renderer/BaseRenderer';
import { ComponentUtils } from './../../../../utils/component-utils/ComponentUtils';

@Component({
    selector: 'novo-table-cell',
    template: `
        <div [ngSwitch]="column._type">
            <span #container></span>
            <date-cell *ngSwitchCase="'date'" [value]="value"></date-cell>
            <a *ngSwitchCase="'link'" (click)="onClick($event);">{{ value }}</a>
            <span *ngSwitchDefault>{{ value }}</span>
        </div>
    `
})
export class TableCell implements OnInit, OnDestroy {
    @ViewChild('container', { read: ViewContainerRef }) container: ViewContainerRef;

    @Input() column: any;
    @Input() row: any;
    @Input() form: FormGroup;
    @Input() hasEditor: boolean;

    public value: any = '';
    private valueChangeSubscription: any;

    constructor(private element: ElementRef, private componentUtils: ComponentUtils) {
        this.element = element;
        this.componentUtils = componentUtils;
    }

    ngOnInit() {
        this.column._type = this.column.type || 'text';
        if (this.column.renderer) {
            if (this.column.renderer.prototype instanceof BaseRenderer) {
                this.column._type = 'custom';
                let componentRef = this.componentUtils.appendNextToLocation(this.column.renderer, this.container);
                componentRef.instance.meta = this.column;
                componentRef.instance.data = this.row;
                componentRef.instance.value = this.form && this.hasEditor ? this.form.value[this.column.name] : this.row[this.column.name];
                // TODO - save ref to this and update in the valueChanges below!!
            } else {
                // TODO - wtf to do here?
                this.value = this.column.renderer(this.row);
            }
        } else {
            this.value = this.form && this.hasEditor ? this.form.value[this.column.name] : this.row[this.column.name];
        }

        if (this.form && this.hasEditor) {
            this.valueChangeSubscription = this.form.valueChanges
                .debounceTime(300)
                .distinctUntilChanged()
                .subscribe((value) => {
                    this.value = value[this.column.name];
                });
        }
    }

    ngOnDestroy() {
        if (this.valueChangeSubscription) {
            this.valueChangeSubscription.unsubscribe();
        }
    }

    onClick(event) {
        if (event) {
            event.preventDefault();
            event.stopPropagation();
        }
        if (this.column.onClick) {
            this.column.onClick(this.row);
        }
    }
}