/**
 * ============LICENSE_START========================================================================
 * ONAP : ccsdk feature sdnr wt odlux
 * =================================================================================================
 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
 * =================================================================================================
 * Licensed 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.
 * ============LICENSE_END==========================================================================
 */
import { IActionHandler } from '../flux/action';

import { SetTitleAction } from '../actions/titleActions';
import { SetExternalLoginProviderAction } from '../actions/loginProvider';
import { AddSnackbarNotification, RemoveSnackbarNotification } from '../actions/snackbarActions';
import { AddErrorInfoAction, RemoveErrorInfoAction, ClearErrorInfoAction } from '../actions/errorActions';
import { MenuAction, MenuClosedByUser } from '../actions/menuAction'
import { SetWebsocketAction } from '../actions/websocketAction';

import { IconType } from '../models/iconDefinition';
import { ErrorInfo } from '../models/errorInfo';
import { SnackbarItem } from '../models/snackbarItem';
import { ExternalLoginProvider } from '../models/externalLoginProvider';
import { ApplicationConfig } from '../models/applicationConfig';
import { IConnectAppStoreState } from '../../../apps/connectApp/src/handlers/connectAppRootHandler';
import { IFaultAppStoreState } from '../../../apps/faultApp/src/handlers/faultAppRootHandler';
import { GeneralSettings } from '../models/settings';
import { SetGeneralSettingsAction } from '../actions/settingsAction';
import { startWebsocketSession, suspendWebsocketSession } from '../services/notificationService';


declare module '../store/applicationStore' {
  interface IApplicationStoreState {
    connect: IConnectAppStoreState;
    fault: IFaultAppStoreState
  }
}
export interface IApplicationState {
  title: string;
  appId?: string;
  icon?: IconType;
  isMenuOpen: boolean;
  isMenuClosedByUser: boolean;
  errors: ErrorInfo[];
  snackBars: SnackbarItem[];
  isWebsocketAvailable: boolean | null;
  externalLoginProviders: ExternalLoginProvider[] | null;
  authentication: "basic"|"oauth",  // basic 
  enablePolicy: boolean,             // false 
  transportpceUrl : string,
  settings: GeneralSettings
}

const applicationStateInit: IApplicationState = {
  title: "Loading ...",
  errors: [],
  snackBars: [],
  isMenuOpen: true,
  isMenuClosedByUser: false,
  isWebsocketAvailable: null,
  externalLoginProviders: null,
  authentication: "basic",
  enablePolicy: false,
  transportpceUrl: "",
  settings:{ general: { areNotificationsEnabled: null }}
};

export const configureApplication = (config: ApplicationConfig) => {
  applicationStateInit.authentication = config.authentication === "oauth" ? "oauth" : "basic";
  applicationStateInit.enablePolicy = config.enablePolicy ? true : false;
  applicationStateInit.transportpceUrl=config.transportpceUrl == undefined ? "" : config.transportpceUrl;
}

export const applicationStateHandler: IActionHandler<IApplicationState> = (state = applicationStateInit, action) => {
  if (action instanceof SetTitleAction) {
    state = {
      ...state,
      title: action.title,
      icon: action.icon,
      appId: action.appId,
    };
  } else if (action instanceof AddErrorInfoAction) {
    state = {
      ...state,
      errors: [
        ...state.errors,
        action.errorInfo,
      ]
    };
  } else if (action instanceof RemoveErrorInfoAction) {
    const index = state.errors.indexOf(action.errorInfo);
    if (index > -1) {
      state = {
        ...state,
        errors: [
          ...state.errors.slice(0, index),
          ...state.errors.slice(index + 1),
        ]
      };
    }
  } else if (action instanceof ClearErrorInfoAction) {
    if (state.errors && state.errors.length) {
      state = {
        ...state,
        errors: [],
      };
    }
  } else if (action instanceof AddSnackbarNotification) {
    state = {
      ...state,
      snackBars: [
        ...state.snackBars,
        action.notification,
      ]
    };
  } else if (action instanceof RemoveSnackbarNotification) {
    state = {
      ...state,
      snackBars: state.snackBars.filter(s => s.key !== action.key),
    };
  } else if (action instanceof MenuAction) {
    state = {
      ...state,
      isMenuOpen: action.isOpen,
    }
  } else if (action instanceof MenuClosedByUser) {
    state = {
      ...state,
      isMenuClosedByUser: action.isClosed,
    }
  }
  else if (action instanceof SetWebsocketAction) {
    state = {
      ...state,
      isWebsocketAvailable: action.isConnected,
    }
  } else if (action instanceof SetExternalLoginProviderAction){
    state = {
      ...state,
      externalLoginProviders: action.externalLoginProvders,
    }
  }else if(action instanceof SetGeneralSettingsAction){

    state = {
      ...state,
      settings:{general:{areNotificationsEnabled: action.areNoticationsActive}}
    }
  }
  return state;
};