//
//  GraphViewController.m
//  Volta
//
//  Created by Ronny Fenrich on 2013-06-17.
//  Copyright (c) 2013 Decoder. All rights reserved.
//

#import "GraphViewController.h"
#import "StatsTabBarController.h"
#import "VoltaReading.h"


@interface GraphViewController ()<UIWebViewDelegate>

@property (weak, nonatomic) IBOutlet UIWebView *webView;

@end

@implementation GraphViewController



- (void)viewDidLoad
{
    [super viewDidLoad];

    NSString *resourcePath = [[[[NSBundle mainBundle] resourcePath] stringByReplacingOccurrencesOfString:@"/" withString:@"//"]
                              stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
    NSString *markup = [NSString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"graph" ofType:@"html"]
                                                 encoding:NSUTF8StringEncoding
                                                    error:nil];
    dispatch_async(dispatch_get_main_queue(), ^{
        [self.webView loadHTMLString:markup baseURL:[NSURL URLWithString:[NSString stringWithFormat:@"file:/%@//", resourcePath]]];
    });
}


- (void)viewDidUnload
{
    [self setWebView:nil];
    [super viewDidUnload];
}


- (void)viewWillDisappear
{
    if (self.webView.loading) {
        [self.webView stopLoading];
    }
}


- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self hideGradientBackground:self.webView];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"MMM dd"];

    NSString *seriesA = @"";
    NSString *seriesB = @"";
    StatsTabBarController *parentTabBarController = (StatsTabBarController *)self.parentViewController;

    for (VoltaReading *reading in parentTabBarController.data.allValues)
    {
        float kWh = reading.usage / 1000.0f;
        float cost = reading.cost / 100000.0f;

        if (![seriesA isEmpty])
        {
            seriesA = [seriesA stringByAppendingString:@","];
        }
        if (![seriesB isEmpty])
        {
            seriesB = [seriesB stringByAppendingString:@","];
        }

        seriesA = [seriesA stringByAppendingString:[NSString stringWithFormat:@"['%@', %.2f]", [dateFormatter stringFromDate:reading.startDate], kWh]];
        seriesB = [seriesB stringByAppendingString:[NSString stringWithFormat:@"['%@', %.2f]", [dateFormatter stringFromDate:reading.startDate], cost]];
    }
    seriesA = [[@"[" stringByAppendingString:seriesA] stringByAppendingString:@"]"];
    seriesB = [[@"[" stringByAppendingString:seriesB] stringByAppendingString:@"]"];

    double delayInSeconds = 0.5;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
        [self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"plotData(%@, %@)", seriesA, seriesB]];
    });

}


#pragma mark - Web View

- (void)hideGradientBackground:(UIView*)theView
{
    for (UIView * subview in theView.subviews)
    {
        if ([subview isKindOfClass:[UIImageView class]])
            subview.hidden = YES;

        [self hideGradientBackground:subview];
    }
}

- (void)webView:(UIWebView *)theWebView didFailLoadWithError:(NSError *)error
{
    // If the URLLoadingSystem cancelled the load don't show anything.
    NSString *errorUrl = [error.userInfo objectForKey:@"NSErrorFailingURLStringKey"];
    if (([error code] != NSURLErrorCancelled ) && ([[errorUrl uppercaseString] startsWith:@"HTTP"]))
    {
        BlockAlertView *alert = [BlockAlertView alertWithTitle:@"Connection Error" message:@"We couldn't load the web page, please check your internet connection and try again."];
        [alert setCancelButtonWithTitle:@"Ok" block:nil];
        [alert show];
    }
}


- (BOOL)webView:(UIWebView *)theWebView shouldStartLoadWithRequest:(NSURLRequest *)theRequest navigationType:(UIWebViewNavigationType)navigationType
{
//    if ([[theRequest.URL absoluteString] isEqual:@"flushd://ready"])
//    {
//        // pass in statistic data when webview is ready...
//        NSError *jsonError = nil;
//        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:self.statsController.userStats
//                                                           options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
//                                                             error:&jsonError];
//        if (jsonError)
//        {
//            BlockAlertView *alert = [BlockAlertView alertWithTitle:@"Error" message:@"Couldn't process statistic data. Please try again later."];
//            [alert setCancelButtonWithTitle:@"Ok" block:nil];
//            [alert show];
//            [self.spinner stopAnimating];
//            [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
//        }
//        else
//        {
//            NSString *jsonStatsData = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
//            NSLog(@"%@", jsonStatsData);
//
//            // save world rank for later...
//            id usersWorldRankValue = [self.statsController.userStats valueForKeyPath:@"week.global_rank"];
//            if (usersWorldRankValue && !([usersWorldRankValue isEqual:[NSNull null]])) {
//                self.usersWorldRank = [usersWorldRankValue integerValue];
//            }
//
//
//            dispatch_async(dispatch_get_main_queue(), ^{
//                [self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"recalculateStats(%@)", jsonStatsData]];
//            });
//        }
//        return NO;
//    }
//    else
//        // webview is updated => present to the user now
//        if ([[theRequest.URL absoluteString] isEqual:@"flushd://loaded"])
//        {
//            // slide in webview from bottom of screen now
//            int finalWebViewPosition = self.webView.$y;
//            self.webView.$y = [[UIScreen mainScreen] applicationFrame].size.height + 20;
//            self.webView.hidden = NO;
//            self.shareButton.hidden = NO;
//
//            [UIView animateWithDuration:0.4
//                                  delay:0.6
//                                options:UIViewAnimationOptionCurveEaseOut
//                             animations:^{
//
//                                 self.webView.$y = finalWebViewPosition;
//
//                             } completion:^(BOOL finished) {
//
//                                 [self.spinner stopAnimating];
//                                 [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
//                                 self.webView.$y = finalWebViewPosition;
//
//                                 // new badges? trigger javascript to show alert to the user
//                                 UIViewController *pController = self.parentViewController;
//                                 if ([pController isKindOfClass:[FlushdCustomTabBarController class]] && [pController respondsToSelector:@selector(setStatsBadge:)])
//                                 {
//                                     FlushdCustomTabBarController *aFlushdTabBarController = (FlushdCustomTabBarController *)pController;
//                                     if (aFlushdTabBarController.badgeLabel.tag > 0) {
//                                         dispatch_async(dispatch_get_main_queue(), ^{
//                                             [self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"showNewAchievementsPopup(%i)", aFlushdTabBarController.badgeLabel.tag]];
//                                         });
//
//                                         // remove badges after user is looking at the stats page...
//                                         [self removeStatsBadge];
//                                     }
//                                 }
//                             }];
//            return NO;
//        }
//


    return YES;
}

- (void)webViewDidFinishLoad:(UIWebView *)theWebView
{
    // scroll to the top
    [self.webView.scrollView setContentOffset:CGPointMake(0, 0)];
}


- (void)webViewDidStartLoad:(UIWebView *)theWebView
{
}


@end