learning.m

//
//  OBFViewController.m
//  Cryptsy Balance
//
//  Created by Payden Sutherland on 3/9/14.
//  Copyright (c) 2014 Payden Sutherland. All rights reserved.
//

#import "OBFViewController.h"
#import "CommonCrypto/CommonDigest.h"
#import "CommonCrypto/CommonHMAC.h"



@interface OBFViewController ()

@end

@implementation OBFViewController


NSMutableData *receivedData;
NSString *public_key = @"c756cbc614fea6ebc77bd243ea839d4ba1646f6f";
NSString *private_key = @"861dd18c2d844fe1399ce9fa28bc2ca36fef3caa7cffbc75efdd85f5510ffd73c51154db4c50b7b4";
NSDictionary *json;
UITableView *tv;


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *tableID = @"SimpleTableID";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:tableID];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:tableID];
    }
    cell.textLabel.text = self.rowArr[indexPath.row];
    return cell;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [self.rowArr count];
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSHTTPURLResponse *)response {
    NSLog(@"Received response data: %ld", (long)[response statusCode]);
    [receivedData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    NSString *dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"Received data: %lu, %@", (unsigned long)[data length], dataString);
    NSError *error;
    json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
    NSDictionary *ret = [json objectForKey:@"return"];
    NSDictionary *bal = [ret objectForKey:@"balances_available"];
    NSArray *sorted_keys = [[bal allKeys] sortedArrayUsingComparator:^(id key, id key2) {
        return [key compare:key2];
    }];

    for (NSString *coin in sorted_keys) {
        NSLog(@"Coin: %@, balance: %@", coin, [bal objectForKey:coin]);
        NSString *val = [bal objectForKey:coin];
        NSString *newString = [[NSString alloc] initWithFormat:@"%@ - %.2f", coin, [val floatValue]];
        [self.rowArr addObject:newString];
    }
    [self.tableViewOutlet reloadData];
    
}

- (void)viewDidLoad
{
    [super viewDidLoad];	
	// Do any additional setup after loading the view, typically from a nib.
    NSLog(@"View did load....");
    self.rowArr = [[NSMutableArray alloc] initWithCapacity:0];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://api.cryptsy.com/api"]];
    NSString *dataToSign = @"method=getinfo&nonce=1";
    const char *key = [private_key cStringUsingEncoding:NSASCIIStringEncoding];
    const char *data = [dataToSign cStringUsingEncoding:NSASCIIStringEncoding];
    unsigned char hash[CC_SHA512_DIGEST_LENGTH];
    CCHmac(kCCHmacAlgSHA512, key, strlen(key), data, strlen(data), hash);
    NSMutableString *hexForm = [[NSMutableString alloc] initWithCapacity:0];
    for (int i = 0; i < sizeof(hash); i++) {
        [hexForm appendFormat:@"%02x", hash[i] & 0xff];
    }
    [request setHTTPMethod:@"POST"];
    [request setValue:hexForm forHTTPHeaderField:@"Sign"];
    [request setValue:public_key forHTTPHeaderField:@"Key"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody:[dataToSign dataUsingEncoding:NSUTF8StringEncoding]];
    
    
    
    if (!receivedData) {
        receivedData = [NSMutableData dataWithCapacity:0];
    }
    NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    if (!conn) {
        NSLog(@"Cannot connect to Cryptsy");
        receivedData = nil;
    }

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end