#import <UIKit/UIKit.h>
#import "QueueITEngine.h"

@interface TopsTableViewController : UITableViewController<QueuePassedDelegate, QueueViewWillOpenDelegate, QueueDisabledDelegate, QueueITUnavailableDelegate, QueueViewClosedDelegate, QueueSessionRestartDelegate>
-(void)initAndRunQueueIt;
@end

-(void)initAndRunQueueIt
{
    NSString* customerId = @"yourCustomerId"; // Required
    NSString* waitingRoomIdOrAlias = @"yourWaitingRoomIdOrAlias"; // Required
    NSString* layoutName = @"yourLayoutName"; // Optional (pass nil if no layout specified)
    NSString* language = @"en-US"; // Optional (pass nil if no language specified)

    self.engine = [[QueueITEngine alloc]initWithHost:self customerId:customerId eventOrAliasId:waitingRoomIdOrAlias layoutName:layoutName language:language];
    [self.engine setViewDelay:5]; // Optional delay parameter you can specify (in case you want to inject some animation before Queue-It UIWebView or WKWebView will appear
    self.engine.queuePassedDelegate = self; // Invoked once the user is passed the queue
    self.engine.queueViewWillOpenDelegate = self; // Invoked to notify that Queue-It UIWebView or WKWebview will open
    self.engine.queueDisabledDelegate = self; // Invoked to notify that queue is disabled
    self.engine.queueITUnavailableDelegate = self; // Invoked in case QueueIT is unavailable (500 errors)
    self.engine.queueUserExitedDelegate = self; // Invoked when user chooses to leave the queue
    self.engine.queueViewClosedDelegate = self; // Invoked after the WebView is closed
    self.engine.queueSessionRestartDelegate = self; // Invoked after user clicks on a link to restart the session. The link is 'queueit://restartSession'.
    
    NSError* error = nil;
    BOOL success = [self.engine run:&error];
    /**
    To enqueue with an enqueue-token or key use one of the following:

    [self.engine runWithEnqueueKey:@"keyValue" error:&error];
    [self.engine runWithEnqueueToken:@"tokenValue" error:&error];
    **/
    if (!success) {
        if ([error code] == NetworkUnavailable) {
            // Thrown when Queue-It detects no internet connectivity
            NSLog(@"%ld", (long)[error code]);
            NSLog(@"Network unavailable was caught in DetailsViewController");
            NSLog(@"isRequestInProgress - %@", self.engine.isRequestInProgress ? @"YES" : @"NO");
        }
        else if ([error code] == RequestAlreadyInProgress) {
            // Thrown when request to Queue-It has already been made and currently in progress. In general you can ignore this.
        }
        else {
             NSLog(@"Unknown error was returned by QueueITEngine in DetailsViewController");
        }
    }
}

// This callback will be called when the user has been through the queue.
// Here you should store session information, so user will only be sent to queue again if the session has timed out.
-(void) notifyYourTurn:(QueuePassedInfo*) queuePassedInfo {
    NSLog(@"You have been through the queue");
    NSLog(@"QUEUE TOKEN: %@", queuePassedInfo.queueitToken);
}

// This callback will be called just before the webview (hosting the queue page) will be shown.
// Here you can change some relevant UI elements.
-(void) notifyQueueViewWillOpen {
    NSLog(@"Queue will open");
}

// This callback will be called when the queue used (event alias ID) is in the 'disabled' state.
// Most likely the application should still function, but the queue's 'disabled' state can be changed at any time,
// so session handling is important.
-(void)notifyQueueDisabled:(QueueDisabledInfo* _Nullable) queueDisabledInfo {
    NSLog(@"Queue is disabled");
}

// This callback will be called when the mobile application can't reach Queue-it's servers.
// Most likely because the mobile device has no internet connection.
// Here you decide if the application should function or not now that is has no queue-it protection.
-(void) notifyQueueITUnavailable:(NSString*) errorMessage {
    NSLog(@"QueueIT is currently unavailable");
}

// This callback will be called after a user clicks a close link in the layout and the WebView closes.
// The close link is "queueit://close". Whenever the user navigates to this link, the SDK intercepts the navigation
// and closes the webview.
-(void)notifyViewClosed {
    NSLog(@"The queue view was closed.")
}

// This callback will be called when the user clicks on a link to restart the session.
// The link is 'queueit://restartSession'. Whenever the user navigates to this link, the SDK intercepts the navigation,
// closes the WebView, clears the URL cache and calls this callback.
// In this callback you would normally call run/runWithToken/runWithKey in order to restart the queueing.
-(void) notifySessionRestart {
    NSLog(@"Session was restarted");
    [self initAndRunQueueIt];
}

-(void)notifyProviderSuccess:(QueueTryPassResult* _Nonnull) queuePassResult {   
   [self.waitingRoomView show:queuePassResult.queueUrl targetUrl:queuePassResult.targetUrl];
}