import { Injectable } from '@angular/core';
import { Observable } from "rxjs";
import { HttpClient, HttpHeaders, HttpRequest } from "@angular/common/http";

import { environment } from "../../environments/environment";
import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from "@angular/router";
import { DeviceGroup } from "./shared/device-group";
import { MaintenanceEntity } from "./shared/maintenance-entity";

@Injectable()
export class MaintenanceManagerService {

    private apiEndpoint = environment.apiUrl + '/api/maintenance';
    private apiEndpointUpcoming = environment.apiUrl + '/api/maintenance/upcoming';
    private cachedMaintenances: Array<DeviceGroup> = [];

    constructor(private httpClient: HttpClient) {
    }

    /**
     * Resolver for the route
     *
     * @param {ActivatedRouteSnapshot} route
     * @param {RouterStateSnapshot} state
     * @returns {Promise<Array<Fault>>}
     */
    resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<Array<DeviceGroup>> {
        let filter = route.data.filter ? route.data.filter : 'upcoming';
        let url = filter == 'upcoming'
            ? this.apiEndpointUpcoming
            : this.apiEndpoint;
        return this.list(url).toPromise();
    }

    /**
     * List all faults
     *
     * @returns {Observable<Array<Fault>>}
     */
    public list(url: string): Observable<Array<DeviceGroup>> {
        return this.httpClient.get<Array<DeviceGroup>>(url);
    }

    public get(hash: string): Observable<MaintenanceEntity> {
        return this.httpClient.get<MaintenanceEntity>(`${this.apiEndpoint}/${hash}`);
    }

    public update(maintenance: MaintenanceEntity) {
        return this.httpClient.put<MaintenanceEntity>(`${this.apiEndpoint}/${maintenance.hash}`, maintenance);
    }

    get maintenances(): Array<DeviceGroup> {
        return this.cachedMaintenances;
    }

    set maintenances(maintenances: Array<DeviceGroup>) {
        this.cachedMaintenances = maintenances;
    }

    public setWip(id: string, page: string) {
        if(confirm("Biztos benne?")) {
            let url = page == 'upcoming'
                ? this.apiEndpointUpcoming
                : this.apiEndpoint;
            this.httpClient.post<any>(`${this.apiEndpoint}/${id}/wip`,{}).subscribe(()=>{
                this.list(url).subscribe(result => this.cachedMaintenances = result);
            });
        }
    }

    public setFin(id: string, page: string) {
        if(confirm("Biztos benne?")) {
            let url = page == 'upcoming'
                ? this.apiEndpointUpcoming
                : this.apiEndpoint;
            this.httpClient.post<any>(`${this.apiEndpoint}/${id}/fin`, {}).subscribe(() => {
                this.list(url).subscribe(result => this.cachedMaintenances = result);
            });
        }
    }
}