/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import {Inject, Injectable} from '@angular/core';
import {HttpClient} from '../http/http.service';
import {Teller} from './domain/teller.model';
import {Observable} from 'rxjs/Observable';
import {TellerManagementCommand} from './domain/teller-management-command.model';
import {TellerBalanceSheet} from './domain/teller-balance-sheet.model';
import {TellerAuthentication} from './domain/teller-authentication.model';
import {RequestOptionsArgs, URLSearchParams} from '@angular/http';
import {TellerTransactionCosts} from './domain/teller-transaction-costs.model';
import {TellerTransaction} from './domain/teller-transaction.model';
import {TellerDenomination} from './domain/teller-denomination.model';

@Injectable()
export class TellerService {

  constructor(private http: HttpClient, @Inject('tellerBaseUrl') private baseUrl: string) {
  }

  create(officeIdentifier: string, teller: Teller): Observable<void> {
    return this.http.post(`${this.baseUrl}/offices/${officeIdentifier}/teller`, teller);
  }

  find(officeIdentifier: string, tellerCode: string): Observable<Teller> {
    return this.http.get(`${this.baseUrl}/offices/${officeIdentifier}/teller/${tellerCode}`);
  }

  fetch(officeIdentifier: string): Observable<Teller[]> {
    return this.http.get(`${this.baseUrl}/offices/${officeIdentifier}/teller`);
  }

  change(officeIdentifier: string, teller: Teller): Observable<void> {
    return this.http.put(`${this.baseUrl}/offices/${officeIdentifier}/teller/${teller.code}`, teller);
  }

  createCommand(officeIdentifier: string, tellerCode: string, tellerManagementCommand: TellerManagementCommand): Observable<void> {
    return this.http.post(`${this.baseUrl}/offices/${officeIdentifier}/teller/${tellerCode}/commands`, tellerManagementCommand);
  }

  getBalance(officeIdentifier: string, tellerCode: string): Observable<TellerBalanceSheet> {
    return this.http.get(`${this.baseUrl}/offices/${officeIdentifier}/teller/${tellerCode}/balance`);
  }

  unlockDrawer(tellerCode: string, tellerAuthentication: TellerAuthentication): Observable<Teller> {
    return this.http.post(`${this.baseUrl}/teller/${tellerCode}/drawer`, tellerAuthentication, undefined, true);
  }

  executeCommand(tellerCode: string, command: string): Observable<void> {
    const params = new URLSearchParams();
    params.append('command', command);

    const requestOptions: RequestOptionsArgs = {
      params
    };

    return this.http.post(`${this.baseUrl}/teller/${tellerCode}`, {}, requestOptions);
  }

  createTransaction(tellerCode: string, tellerTransaction: TellerTransaction): Observable<TellerTransactionCosts> {
    return this.http.post(`${this.baseUrl}/teller/${tellerCode}/transactions`, tellerTransaction);
  }

  confirmTransaction(tellerCode: string, tellerTransactionIdentifier: string, command: string,
                     chargesIncluded?: boolean): Observable<void> {
    const params = new URLSearchParams();
    params.append('command', command);
    params.append('charges', chargesIncluded ? 'included' : 'excluded');

    const requestOptions: RequestOptionsArgs = {
      params
    };

    return this.http.post(`${this.baseUrl}/teller/${tellerCode}/transactions/${tellerTransactionIdentifier}`, {}, requestOptions);
  }

  getTransactions(tellerCode: string): Observable<TellerTransaction[]> {
    return this.http.get(`${this.baseUrl}/teller/${tellerCode}/transactions`);
  }

  saveTellerDenomination(officeIdentifier: string, tellerCode: string, tellerDenomination: TellerDenomination): Observable<void> {
    return this.http.post(`${this.baseUrl}/offices/${officeIdentifier}/teller/${tellerCode}/denominations`, tellerDenomination);
  }

  fetchTellerDenominations(officeIdentifier: string, tellerCode: string): Observable<TellerDenomination[]> {
    return this.http.get(`${this.baseUrl}/offices/${officeIdentifier}/teller/${tellerCode}/denominations`);
  }

}