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import { FilterModel } from '../core/filter/FilterModel';
import { ErrorResult, Exception, OperationParameters, OperationReference, Result, ResultParameters } from '../model/idea/idea';
import { action, computed, observable } from "mobx";
import { Gateway } from '../manager/Gateway';
export abstract class BaseOperation {
private _interactionTimeoutId: number = 0;
private static _currentOperations: Map<number, PollPromise> = new Map<number, PollPromise>();
//public InteractionTimeout: EventDelegate<InteractionTimeoutEventArgs> = new EventDelegate<InteractionTimeoutEventArgs>();
@observable public Error: string = "";
@observable public OverridingFilters: FilterModel[] = [];
//@observable
@observable public Result?: Result = undefined;
@observable public ComputationStarted: boolean = false;
public OperationReference?: OperationReference = undefined;
private static _nextId = 0;
public RequestSalt: string = "";
public Id: number;
constructor() {
this.Id = BaseOperation._nextId++;
}
@computed
public get FilterString(): string {
return "";
}
@action
public SetResult(result: Result): void {
this.Result = result;
}
public async Update(): Promise<void> {
try {
if (BaseOperation._currentOperations.has(this.Id)) {
BaseOperation._currentOperations.get(this.Id)!.Cancel();
if (this.OperationReference) {
Gateway.Instance.PauseOperation(this.OperationReference.toJSON());
}
}
const operationParameters = this.CreateOperationParameters();
if (this.Result) {
this.Result.progress = 0;
} // bcz: used to set Result to undefined, but that causes the display to blink
this.Error = "";
const salt = Math.random().toString();
this.RequestSalt = salt;
if (!operationParameters) {
this.ComputationStarted = false;
return;
}
this.ComputationStarted = true;
//let start = performance.now();
const promise = Gateway.Instance.StartOperation(operationParameters.toJSON());
promise.catch(err => {
action(() => {
this.Error = err;
console.error(err);
});
});
const operationReference = await promise;
if (operationReference) {
this.OperationReference = operationReference;
const resultParameters = new ResultParameters();
resultParameters.operationReference = operationReference;
const pollPromise = new PollPromise(salt, operationReference);
BaseOperation._currentOperations.set(this.Id, pollPromise);
pollPromise.Start(async () => {
const result = await Gateway.Instance.GetResult(resultParameters.toJSON());
if (result instanceof ErrorResult) {
throw new Error((result).message);
}
if (this.RequestSalt === pollPromise.RequestSalt) {
if (result && (!this.Result || this.Result.progress !== result.progress)) {
/*if (operationViewModel.Result !== null && operationViewModel.Result !== undefined) {
let t1 = performance.now();
console.log((t1 - start) + " milliseconds.");
start = performance.now();
}*/
this.SetResult(result);
}
if (!result || result.progress! < 1) {
return true;
}
}
return false;
}, 100).catch((err: Error) => action(() => {
this.Error = err.message;
console.error(err.message);
})()
);
}
}
catch (err) {
console.error(err as Exception);
// ErrorDialog.Instance.HandleError(err, operationViewModel);
}
}
public CreateOperationParameters(): OperationParameters | undefined { return undefined; }
private interactionTimeout() {
// clearTimeout(this._interactionTimeoutId);
// this.InteractionTimeout.Fire(new InteractionTimeoutEventArgs(this.TypedViewModel, InteractionTimeoutType.Timeout));
}
}
export class PollPromise {
public RequestSalt: string;
public OperationReference: OperationReference;
private _notCanceled: boolean = true;
private _poll: undefined | (() => Promise<boolean>);
private _delay: number = 0;
public constructor(requestKey: string, operationReference: OperationReference) {
this.RequestSalt = requestKey;
this.OperationReference = operationReference;
}
public Cancel(): void {
this._notCanceled = false;
}
public Start(poll: () => Promise<boolean>, delay: number): Promise<void> {
this._poll = poll;
this._delay = delay;
return this.pollRecursive();
}
private pollRecursive = (): Promise<void> => {
return Promise.resolve().then(this._poll).then((flag) => {
this._notCanceled && flag && new Promise((res) => (setTimeout(res, this._delay)))
.then(this.pollRecursive);
});
}
}
export class InteractionTimeoutEventArgs {
constructor(public Sender: object, public Type: InteractionTimeoutType) {
}
}
export enum InteractionTimeoutType {
Reset = 0,
Timeout = 1
}
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