function(context, callback) {
    const urlPath = context.httpRequest.httpProperties.url.path.toLowerCase();
    const httpMethod = context.httpRequest.httpProperties.method.toLowerCase();

    const isCheckoutRequest =
        urlPath === "/checkout/complete" &&
        httpMethod === "POST".toLowerCase();

    ::return callback(isCheckoutRequest && statusCode >= 500);
}

function(context, callback) {
    for (let i = 0; i < context.httpRequest.logs.length; i++) {
        let log = context.httpRequest.logs[i];

        if (log.message.indexOf("Object reference not set") > -1) {
            ::return callback(true);
        }
    }
}

function(context, callback) {
    const durationInMilliseconds = context.httpRequest.durationInMilliseconds;
    const isLocalhost = context.httpRequest.url.absoluteUri.includes("localhost");

    if(!isLocalhost && durationInMilliseconds >= 1000) {
        ::return callback(true);
    }
}

function (scheduledContext, callback) {
    const count = await scheduledContext.requests.count([
        {
            field: "startDateTime",
            value: new Date(Date.now() - 10 * 60 * 1000).toISOString(),
            operator: "GreaterOrEqualThan"
        },
        {
            field: "httpStatusCode",
            value: 500,
            operator: "GreaterOrEqualThan"
        }
    ]);

    ::return callback(count >= 5);
}