import { LocaleService } from '../common/i18n';
import { Observable } from 'rxjs/Rx';
import { Injectable } from '@angular/core';
import { Http, RequestOptions, ResponseContentType, Response } from '@angular/http';
import { SeCurisResourceServices } from './base';
import "file-saver";

declare var saveAs: FileSaver;

export const LIC_STATUS = {
	CREATED: 'CR',
	ACTIVE: 'AC',
	REQUESTED: 'RE',
	PREACTIVE: 'PA',
	EXPIRED: 'EX',
	BLOCKED: 'BL',
	CANCELLED: 'CA'
}

export const COLORS_BY_STATUS = {
		'CR': '#808080',
		'AC': '#329e5a',
		'RE': '#2981d4',
		'EX': '#ea7824',
		'BL': '#ff0000',
		'CA': '#a21717'
};


/**
 * These transitions could be get from server, class License.Status, but
 * we copy them for simplicity, this info won't change easily
 */
export const LIC_ACTIONS_BY_STATUS = {
	edit: [LIC_STATUS.REQUESTED, LIC_STATUS.CREATED, LIC_STATUS.EXPIRED, LIC_STATUS.PREACTIVE, LIC_STATUS.ACTIVE, LIC_STATUS.CANCELLED, LIC_STATUS.BLOCKED],
	add_request: [LIC_STATUS.CREATED],
	activate: [LIC_STATUS.CREATED, LIC_STATUS.REQUESTED, LIC_STATUS.PREACTIVE],
	send: [LIC_STATUS.ACTIVE, LIC_STATUS.PREACTIVE],
	download: [LIC_STATUS.ACTIVE, LIC_STATUS.PREACTIVE],
	block: [LIC_STATUS.CANCELLED],
	unblock: [LIC_STATUS.BLOCKED],
	cancel: [LIC_STATUS.REQUESTED, LIC_STATUS.EXPIRED, LIC_STATUS.PREACTIVE, LIC_STATUS.ACTIVE],
	'delete': [LIC_STATUS.CREATED, LIC_STATUS.CANCELLED, LIC_STATUS.BLOCKED]
}

export const LICENSE_ACTIONS : any[] = [{
/*    command: 'add_request',
    icon: 'add_to_photos',
    name: 'Add request'
  },{  */
    command: 'activate',
    icon: 'play_circle_outline',
    name: 'Activate'
  },{
    command: 'send',
    icon: 'send',
    name: 'Send'
  },{
    command: 'download',
    icon: 'file_download',
    name: 'Download'
  },{
    command: 'block',
    icon: 'do_not_disturb_on',
    name: 'Block'
  },{
    command: 'unblock',
    icon: 'do_not_disturb_off',
    name: 'Unblock'
  },{
    command: 'cancel',
    icon: 'cancel',
    name: 'Cancel'
  }]


@Injectable()
export class LicensesService extends SeCurisResourceServices {
	constructor(http: Http,
				$L: LocaleService) {
		super($L, http, 'license');
	}

	public getByPack(packId: number) {
		let url = `${this.resource}?packId=${packId}`;
		return this.http.get(url).map(response => response.json());
	}

	public activate(id: number) {
		return super.action(id, "activate");
	}

	public block(id: number) {
		return super.action(id, "block");
	}

	public unblock(id: number) {
		return super.action(id, "unblock");
	}

	public send(id: number) {
		return super.action(id, "send");
	}

	public cancel(id: number) {
		return super.action(id, "cancel");
	}

	public download(id: number) {
	    let url = `${this.resource}/${id}/download`;
        return this.http.get(url).map((response : Response) => {
			let filename =  JSON.parse(response.headers.get('Content-Disposition').match(/".*"$/g)[0]);
			let content = JSON.stringify(response.json(), null, 2);
			saveAs( new Blob([ content ], { type : 'application/octet-stream' }), filename);
			return Observable.of(true);
		}).catch(err => super.processErrorResponse(err));
	}

	public isActionAvailable(action:string, lic:any) {
		var validStatuses = LIC_ACTIONS_BY_STATUS[action];
		return lic && validStatuses && validStatuses.indexOf(lic.status) !== -1;
	}

	getStatusName(statusCode: string): string {
		return this.$L.get(`pack.status.${statusCode}`, this.$L.get('Unknown'));
	}  

	getStatusColor(statusCode: string): string {
		return COLORS_BY_STATUS[statusCode] || '#cccccc';
	}  
}