//
//  StatsTabBarController.m
//  Volta
//
//  Created by Ronny Fenrich on 2013-06-14.
//  Copyright (c) 2013 Decoder. All rights reserved.
//

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


@interface StatsTabBarController ()

@property (strong, nonatomic) NSDateFormatter *dateFormatter;

@end

@implementation StatsTabBarController


- (void)viewDidLoad
{
    [super viewDidLoad];

    // start loading data...
    [self updateData];
}


- (NSDateFormatter *)dateFormatter
{
    if (!_dateFormatter)
    {
        _dateFormatter = [[NSDateFormatter alloc] init];
        [_dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
        NSCalendar* calendar = [NSCalendar currentCalendar];
        [calendar setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
        [_dateFormatter setCalendar:calendar];
    }
    return _dateFormatter;
}


// --------------------------------------------------------------------------------------
- (void)updateData
{
    self.data = nil;
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];

    // load data
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:HOST]];
    [httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
    [httpClient setDefaultHeader:@"Accept" value:@"application/json"];
    [httpClient setParameterEncoding:AFJSONParameterEncoding];

    NSString *startDateUTC = [self.dateFormatter stringFromDate:self.startDate];
    NSString *endDateUTC = [self.dateFormatter stringFromDate:self.endDate];

    NSError *error;
    NSString *token = [SSKeychain passwordForService:KEYCHAIN_API_TOKEN account:KEYCHAIN_ACCOUNT error:&error];

    NSMutableURLRequest *request;
    request = [httpClient requestWithMethod:@"GET" path:[NSString stringWithFormat:URL_READINGS, token, startDateUTC, endDateUTC] parameters:nil];

    NSLog(@"GET: %@", request);

    AFJSONRequestOperation *operation = [AFJSONRequestOperation
                                         JSONRequestOperationWithRequest:request
                                         success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
                                         {
                                             [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
                                             NSLog(@"%@", JSON);

                                             if (!self.data)
                                             {
                                                 self.data = [[MGOrderedDictionary alloc] init];
                                             }

                                             for (NSDictionary *data in JSON)
                                             {
                                                 VoltaReading *aReading = [VoltaReading initFromJSON:data];
                                                 NSString *dictKey = aReading.dictionaryKey;

                                                 // we now group data by day (calc totals for days usage and cost)
                                                 if (![self.data objectForKey:dictKey])
                                                 {
                                                     [self.data insertObject:aReading forKey:dictKey atIndex:self.data.count];
                                                 }
                                                 else
                                                 {
                                                     VoltaReading *readingsForData = [self.data objectForKey:dictKey];
                                                     aReading.cost += readingsForData.cost;
                                                     aReading.usage += readingsForData.usage;
                                                     [self.data setObject:aReading forKey:dictKey];
                                                 }
                                             }

                                             [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_UPDATED_STATS_DATA object:nil];
                                         }
                                         failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON)
                                         {
                                             NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
                                             [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
                                             [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_UPDATED_STATS_DATA object:nil];

                                             BlockAlertView *alert = [BlockAlertView alertWithTitle:@"Error" message:@"Failed to retrieve reading data. Please try again later."];
                                             [alert setCancelButtonWithTitle:@"Ok" block:nil];
                                             [alert show];
                                         }];
    [operation start];
    
    
}



@end