// 2023/04/21a - BkBookingAction



// #region Booking Actions

// Executes a BK Booking Action to run custom business logic on the server.  JSON results will be returned and will be passed
// to either successCallback function or errorCallback function.  In the case of an HTTP error response (400 - 600), a custom
// callback can be used to handle this.
function ExecuteBookingAction(action, params, successCallback, errorCallback, httpErrorCallback, method) {
    // Init
    if (!action) { alert("No Action provided."); return; }
    if (!params) { params = ""; }
    if ((!method) || (method != "POST")) { method = "GET"; }
    //console.log("METHOD: " + method);
    params = encodeURIComponent(params); // Encode for URL (replacements will be "%3D" for "=" and "%26" for "&")
    var paramsString = "parameters=" + params;
    var cacheId = Math.random() + ""; // Used for uniqueness so to circumvent portal caching.  Should also add Booking Code to this cacheId to guarantee uniqueness
    var customActionUrl = window.location.origin + "/bookingaction-execute/?action=" + action;
    if (method == "GET") { customActionUrl += "&" + paramsString; }
    customActionUrl += "&cache_id=" + cacheId;

    var xhttp = new XMLHttpRequest();
    xhttp.onreadystatechange = function () {
        //console.log("readyState: " + this.readyState + ", status: " + this.status);
        if (this.readyState == 4) {
            if (this.status == 200) {
                try {
                    // Read the JSON results from the Custom Action portal page
                    var result = JSON.parse(this.responseText);
                    //console.log("console log of the result");
                    //console.log(result);
                    var successMessage = result[0].success_message; // If this is not an empty string, we have a successful result.  This will usually be something like "SUCCESS".
                    var errorMessage = result[0].error_message; // If there was an error, the details will be in here.
                    var responseData = result[0].response_data; // The response data in JSON.
                    var responseData2 = result[0].response_data_2; // This is if we need a second result set.

                    if (successMessage != "") {
                        // Success
                        successCallback(result);
                    } else { // Must be an error
                        // Error
                        errorCallback(result);
                    }
                } catch (err) {
                    // It's possible that the custom action page will not return a proper JSON object - for example if the page times out.  In this case,
                    // just send the raw responseText to the error function.
                    // NOTE: The portal seems to time out after around 30 seconds (if a fetch takes too long for example).  This timeout occurs even if the fetch succeeds.
                    errorCallback(this.responseText);
                }
            } else if ((this.status >= 400) && (this.status <= 600)) {
                if (httpErrorCallback) {
                    httpErrorCallback(this.status, this.responseText);
                }
            }
        }
    };

    // Send the request
    if (method == "GET") {
        //console.log("Custom Action - GET: " + customActionUrl);
        xhttp.open("GET", customActionUrl, true);
        xhttp.send();
    } else { // POST
        //console.log("Custom Action - POST: " + customActionUrl);
        //console.log("POST params: " + paramsString);
        xhttp.open("POST", customActionUrl, true);
        xhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); // Send the proper header information along with the request
        xhttp.send(paramsString);
    }
}

// #endregion