@snap/camera-kit/dist/handlers/requestStateEmittingHandler.js

Camera Kit Web

import { __awaiter } from "tslib";
import { ensureError } from "../common/errorHelpers";
import { Injectable } from "../dependency-injection/Injectable";
import { TypedCustomEvent } from "../events/TypedCustomEvent";
import { TypedEventTarget } from "../events/TypedEventTarget";
import { Timer } from "../metrics/operational/Timer";
let requestId = 0;
const safeParseInt = (str) => {
    if (str == null)
        return 0;
    const maybeInt = parseInt(str);
    return isNaN(maybeInt) ? 0 : maybeInt;
};
export const dispatchRequestStarted = (requestStateEventTarget, data) => {
    const started = Object.assign(Object.assign({}, data), { requestId: requestId++, timer: new Timer("download_latency") });
    requestStateEventTarget.dispatchEvent(new TypedCustomEvent("started", started));
    return started;
};
export const dispatchRequestCompleted = (requestStateEventTarget, data) => {
    requestStateEventTarget.dispatchEvent(new TypedCustomEvent("completed", data));
    return data;
};
export const dispatchRequestErrored = (requestStateEventTarget, data) => {
    requestStateEventTarget.dispatchEvent(new TypedCustomEvent("errored", data));
    return data;
};
export const createRequestStateEmittingHandler = (requestStateEventTarget) => (next) => ([request, dimensions], metadata) => __awaiter(void 0, void 0, void 0, function* () {
    const { requestId } = dispatchRequestStarted(requestStateEventTarget, { dimensions });
    try {
        const response = yield next(request, metadata);
        const status = response.status;
        const sizeByte = safeParseInt(response.headers.get("content-length"));
        dispatchRequestCompleted(requestStateEventTarget, { requestId, dimensions, status, sizeByte });
        return response;
    }
    catch (error) {
        dispatchRequestErrored(requestStateEventTarget, { requestId, dimensions, error: ensureError(error) });
        throw error;
    }
});
export const requestStateEventTargetFactory = Injectable("requestStateEventTarget", () => new TypedEventTarget());
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