import { SdcUiComponents, SdcUiCommon, SdcUiServices } from "onap-ui-angular";
import { Injectable, ComponentRef } from "@angular/core";
import { AutomatedUpgradeComponent } from "./automated-upgrade.component";
import { Component } from "../../../models/components/component";
import { ComponentServiceNg2 } from "../../services/component-services/component.service";
import { GeneralStatus, ComponentType } from "../../../utils/constants";
import { IDependenciesServerResponse } from "../../services/responses/dependencies-server-response";
import { AutomatedUpgradeStatusComponent } from "./automated-upgrade-status/automated-upgrade-status.component";
import { AutomatedUpgradeStatusResponse } from "../../services/responses/automated-upgrade-response";
import { TranslateService, ITranslateArgs } from "../../shared/translator/translate.service";
import { ServiceContainerToUpgradeUiObject, AllottedResourceInstanceUiObject, VspInstanceUiObject } from "./automated-upgrade-models/ui-component-to-upgrade";
import Dictionary = _.Dictionary;

export interface IAutomatedUpgradeRequestObj {
    serviceId:string;
    resourceId?:string;
}

export enum Placement {
    left = "left"
}

@Injectable()
export class AutomatedUpgradeService {

    private vspComponent:Component;
    private uiComponentsToUpgrade:Array<ServiceContainerToUpgradeUiObject>;
    private componentType:string;
    private modalInstance: ComponentRef<SdcUiComponents.ModalComponent>;

    constructor(private modalService:SdcUiServices.ModalService,
                private componentService:ComponentServiceNg2,
                private translateService:TranslateService) {
    }


    public convertToServerRequest = (selectedServices:Array<string>):Array<IAutomatedUpgradeRequestObj> => {

        let automatedRequest:Array<IAutomatedUpgradeRequestObj> = [];
        _.forEach(selectedServices, (serviceId:string) => {
            let serviceToUpgrade:ServiceContainerToUpgradeUiObject = _.find(this.uiComponentsToUpgrade, (service:ServiceContainerToUpgradeUiObject) => {
                return serviceId === service.uniqueId;
            });

            if (serviceToUpgrade.vspInstances[0] instanceof AllottedResourceInstanceUiObject) { // If this is allotted resource instances, we need to take the origin vf id (all the instances have the save origin vspId
                automatedRequest.push({
                    serviceId: serviceId,
                    resourceId: (<AllottedResourceInstanceUiObject> serviceToUpgrade.vspInstances[0]).originVfId
                });
            } else {
                automatedRequest.push({serviceId: serviceId});
            }
        });
        return automatedRequest;
    }

    private getStatusText = (statusMap:Dictionary<AutomatedUpgradeStatusResponse>):string => {
        let failedUpgraded = _.filter(_.flatMap(statusMap), (upgradeStatus:AutomatedUpgradeStatusResponse) => {
            return upgradeStatus.status !== GeneralStatus.OK
        });

        if (failedUpgraded.length > 0) {
            return this.getTextByComponentType("_UPGRADE_STATUS_FAIL");
        }
        return this.getTextByComponentType("_UPGRADE_STATUS_SUCCESS");
    }

    private disabledAllModalButtons = ():void => {
        this.modalInstance.instance.innerModalContent.instance.disabled = true;
        this.modalInstance.instance.buttons[0].show_spinner = true;
        this.modalInstance.instance.buttons[1].disabled = true;
    }

    public changeUpgradeButtonState = (isDisabled:boolean):void => {
        if (this.modalInstance.instance.buttons[0].disabled !== isDisabled) {
            this.modalInstance.instance.buttons[0].disabled = isDisabled;
        }
    }

    //TODO We will need to replace this function after sdc-ui modal new design, this is just a workaround
    public automatedUpgrade = ():void => {

        let selectedServices = this.modalInstance.instance.innerModalContent.instance.selectedComponentsToUpgrade;
        this.disabledAllModalButtons();
        this.componentService.automatedUpgrade(this.vspComponent.componentType, this.vspComponent.uniqueId, this.convertToServerRequest(selectedServices)).subscribe((automatedUpgradeStatus:any) => {

            if (automatedUpgradeStatus.status === GeneralStatus.OK) {

                let statusMap:Dictionary<AutomatedUpgradeStatusResponse> = _.keyBy(automatedUpgradeStatus.componentToUpgradeStatus, 'name');
                // In the status modal we only showing the upgraded component that the user selected, not the entire list
                let upgradedComponent:Array<ServiceContainerToUpgradeUiObject> = _.filter(this.uiComponentsToUpgrade, (component:ServiceContainerToUpgradeUiObject) => {
                    return selectedServices.indexOf(component.uniqueId) > -1;
                });

                _.forEach(upgradedComponent, (upgradedComponent:ServiceContainerToUpgradeUiObject) => { // If upgrade success we need to upgrade the version  all success
                    if (statusMap[upgradedComponent.name].status === GeneralStatus.OK) {
                        upgradedComponent.version = statusMap[upgradedComponent.name].version;
                        _.forEach(upgradedComponent.vspInstances, (instance:VspInstanceUiObject) => {
                            instance.vspVersion = this.vspComponent.version;
                        });
                    }
                });

                let statusModalTitle = this.getTextByComponentType("_UPGRADE_STATUS_TITLE");
                this.modalInstance.instance.setTitle(statusModalTitle);
                this.modalInstance.instance.getButtons().splice(0, 1); // Remove the upgrade button
                this.modalInstance.instance.buttons[0].disabled = false; // enable close again
                this.modalInstance.instance.innerModalContent.destroy();
                this.modalService.createInnnerComponent(this.modalInstance, AutomatedUpgradeStatusComponent, {
                    upgradedComponentsList: upgradedComponent,
                    upgradeStatusMap: statusMap,
                    statusText: this.getStatusText(statusMap)
                });
            }
        });
    }

    public isAlreadyAdded = (uniqueId:string):ServiceContainerToUpgradeUiObject => {
        let componentToUpgrade = _.find(this.uiComponentsToUpgrade, (componentToUpgrade:ServiceContainerToUpgradeUiObject) => {
            return componentToUpgrade.uniqueId === uniqueId;
        });
        return componentToUpgrade;
    }

    public initVfUpgradeData = (serviceToUpgrade:IDependenciesServerResponse, vsp:IDependenciesServerResponse) => {

        let existed = this.isAlreadyAdded(serviceToUpgrade.uniqueId);
        if (existed) { // We will take the VF with the lower version existed - only one exist all the time in vf upgrade
            if (vsp.version < existed.vspInstances[0].vspVersion) {
                existed.vspInstances = [];
                existed.addVfInstance(vsp, this.vspComponent.version);
            }
        } else {
            let dependencyUiObj:ServiceContainerToUpgradeUiObject = new ServiceContainerToUpgradeUiObject(serviceToUpgrade);
            dependencyUiObj.addVfInstance(vsp, this.vspComponent.version);
            this.uiComponentsToUpgrade.push(dependencyUiObj);
        }
    }

    // Service data will create instances of proxy or allotted resources
    public initServiceUpgradeData = (serviceToUpgrade:IDependenciesServerResponse, vsp:IDependenciesServerResponse, instanceNames:Array<string>, allottedOriginVf?:IDependenciesServerResponse) => {

        let existedService = this.isAlreadyAdded(serviceToUpgrade.uniqueId);
        if (existedService) {
            existedService.addMultipleInstances(vsp, this.vspComponent.version, instanceNames, allottedOriginVf);
        }
        else {
            let dependencyUiObj:ServiceContainerToUpgradeUiObject = new ServiceContainerToUpgradeUiObject(serviceToUpgrade);
            dependencyUiObj.addMultipleInstances(vsp, this.vspComponent.version, instanceNames, allottedOriginVf);
            this.uiComponentsToUpgrade.push(dependencyUiObj);
        }
    }

    /*
     The server return response of 3 level nested object
     First level - Vsp data by version
     Each vsp have a decencies (the services contains the vsp - By default this is vf upgrade
     If instancesNames exist - this can be proxy or allotted
     If we have second layer of dependencies than this is allotted
     Since we display the data the opposite way the BE return, this function will order the data in order to display it
     */
    public convertToComponentsToUpgradeUiObjArray = (dependenciesServerResponse:Array<IDependenciesServerResponse>):void => {

        this.uiComponentsToUpgrade = [];

        _.forEach(dependenciesServerResponse, (vsp:IDependenciesServerResponse) => { // 3 nested levels - 1 level for vf, 2 level proxy, 3 levels allotted
            if (vsp.dependencies) {
                _.forEach(vsp.dependencies, (dependency:IDependenciesServerResponse) => {
                    if (dependency.instanceNames) { // Init service upgrade data
                        if (dependency.dependencies) {
                            _.forEach(dependency.dependencies, (serviceContainer:IDependenciesServerResponse) => { // Initiate allotted_resource instances
                                this.initServiceUpgradeData(serviceContainer, vsp, dependency.instanceNames, dependency);
                            });
                        } else { //Init service_proxy instances
                            this.initServiceUpgradeData(dependency, vsp, dependency.instanceNames);
                        }
                    } else { // Init vf upgrade data
                        this.initVfUpgradeData(dependency, vsp);
                    }
                })
            }
        });
    }

    public isAllComponentsUpgraded = ():boolean => {
        let isAllComponentUpgrade = _.filter(this.uiComponentsToUpgrade, (component:ServiceContainerToUpgradeUiObject) => {
            return !component.isAlreadyUpgrade;
        });
        return isAllComponentUpgrade.length === 0;
    }

    public isAllComponentsLocked = ():boolean => {
        let unLockedComponents = _.filter(this.uiComponentsToUpgrade, (component:ServiceContainerToUpgradeUiObject) => {
            return !component.isLock;
        });
        return unLockedComponents.length === 0;
    }

    public isUpgradeNeeded = ():boolean => {
        let neededUpgradeList = _.filter(this.uiComponentsToUpgrade, (component:ServiceContainerToUpgradeUiObject) => {
            return !component.isLock && !component.isAlreadyUpgrade;
        });
        return neededUpgradeList.length > 0;
    }

    private getTextByComponentType (textLabel: string, params?:ITranslateArgs) {
        return this.translateService.translate(this.componentType + textLabel, params);
    }
    public getInformationTextToDisplay = ():string => {

        let isAllComponentsUpgraded = this.isAllComponentsUpgraded();
        let isAllComponentsLocked = this.isAllComponentsLocked();
        let params = {vspName: this.vspComponent.name, vspVersion: this.vspComponent.version};

        if (this.uiComponentsToUpgrade.length === 0) {
            return this.getTextByComponentType("_NOTHING_TO_UPGRADE", params);
        }

        switch (true) {
            
            case this.isUpgradeNeeded():
            {
                return this.getTextByComponentType("_AUTOMATED_UPGRADE_WITH_COMPONENTS_TO_UPGRADE", params);
            }
            case  !this.isUpgradeNeeded() && isAllComponentsLocked:
            {
                return this.getTextByComponentType("_AUTOMATED_UPGRADE_ALL_COMPONENTS_LOCKED", params);
            }
            case !this.isUpgradeNeeded() && !isAllComponentsLocked && isAllComponentsUpgraded:
            {
                return this.getTextByComponentType("_AUTOMATED_UPGRADE_ALL_COMPONENTS_UPGRADED", params);
            }
            case !this.isUpgradeNeeded() && !isAllComponentsLocked && !isAllComponentsUpgraded:
            {
                return this.getTextByComponentType("_AUTOMATED_UPGRADE_ALL_COMPONENTS_LOCKED", params);
            }
        }
    }

    public openAutomatedUpgradeModal = (componentsToUpgrade:Array<IDependenciesServerResponse>, component:Component, isAfterCertification?:boolean):void => {

        this.vspComponent = component;
        this.componentType = this.vspComponent.isResource() ? ComponentType.RESOURCE : ComponentType.SERVICE;

        this.convertToComponentsToUpgradeUiObjArray(componentsToUpgrade);
        let informationalText = this.getInformationTextToDisplay();
        let modalTitle = this.getTextByComponentType("_UPGRADE_TITLE");
        let certificationText = isAfterCertification ? this.getTextByComponentType("_CERTIFICATION_STATUS_TEXT", {resourceName: this.vspComponent.name}) : undefined;

        let upgradeVspModalConfig = {
            title: modalTitle,
            size: "md",
            type: SdcUiCommon.ModalType.custom,
            testId: "upgradeVspModal",
            buttons: [
                {
                    text: this.vspComponent.isResource() ? "UPGRADE" : "UPDATE",
                    spinner_position: Placement.left,
                    size: 'sm',
                    callback: this.automatedUpgrade,
                    closeModal: false,
                    disabled: !this.isUpgradeNeeded(),

                },
                {text: 'CLOSE', size: 'sm', closeModal: true, type: 'secondary'}
            ] as SdcUiCommon.IModalButtonComponent[]
        } as SdcUiCommon.IModalConfig;

        this.modalInstance = this.modalService.openModal(upgradeVspModalConfig);
        this.modalService.createInnnerComponent(this.modalInstance, AutomatedUpgradeComponent, {
            componentsToUpgrade: this.uiComponentsToUpgrade,
            informationText: informationalText,
            certificationStatusText: certificationText
        });
    }
}