ReadItLaterLite.m

//
//  ReadItLaterLite.m
//  ReadItLaterAPI
//  Version 1.0
//
//  Created by Nathan Weiner on 5/9/09.
//  Copyright 2009 Idea Shower. All rights reserved.
//

#import "ReadItLaterLite.h"
#import "RIL_apikeys.h"


@implementation ReadItLater

static NSString *apikey = RIL_APIKEYS;			//Enter your apikey here : get one at http://readitlaterlist.com/api/ 
static NSString *nameOfYourApp = @"Tweetee";		//Enter the name of your application here (optional - for user-agent string)




@synthesize delegate, method, apiResponse, requestData, stringResponse;

/* -----------------
 
	SEE THE ReadItLaterLite.h FILE FOR COMMENTS/DOCUMENTATION
	ADDITIONAL DOCUMENTATION, SCREENSHOTS, EXAMPLES ARE AVAILABLE AT:
	http://readitlaterlist.com/api_iphone/
 
-------------------- */


- (void)dealloc {
	[method release];
	[apiResponse release];
	[requestData release];
	[stringResponse release];
    [super dealloc];
}


/* ----------------------------------- */

// Saving Methods, see ReadItLaterLite.h for comments/documentation

+(void)save:(NSURL *)url title:(NSString *)title delegate:(id)delegate {
	
	NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
	[ReadItLater save:url title:title delegate:delegate username:[prefs objectForKey:@"ReadItLaterUsername"] password:[prefs objectForKey:@"ReadItLaterPassword"]];

	
}
+(void)save:(NSURL *)url title:(NSString *)title delegate:(id)delegate username:(NSString *)username password:(NSString *)password {
	
	ReadItLater *readItLater = [[ReadItLater alloc] init];
	readItLater.delegate = delegate;
	[readItLater sendRequest:@"add" username:username password:password params:[NSString stringWithFormat:@"url=%@&title=%@", [ReadItLater encode:[url.absoluteString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]], [ReadItLater encode:[title stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]] ]];
	
	
}



/* ----------------------------------- */



// --- LOGIN/SETUP METHODS --- //
// see ReadItLaterLite.h for comments/documentation

+(void)authWithUsername:(NSString *)username password:(NSString *)password delegate:(id)delegate {
	
	ReadItLater *readItLater = [[ReadItLater alloc] init];
	readItLater.delegate = delegate;
	[readItLater sendRequest:@"auth" username:username password:password params:nil];
	
}

+(void)signupWithUsername:(NSString *)username password:(NSString *)password delegate:(id)delegate {
	
	ReadItLater *readItLater = [[ReadItLater alloc] init];
	readItLater.delegate = delegate;
	[readItLater sendRequest:@"signup" username:username password:password params:nil];
	
}



@end




/* ----- The following methods are used by the simple/auto methods listed above, you should not implement these --- */


@implementation ReadItLater (Private)

	
// -- //
	

-(void)sendRequest:(NSString *)newMethod username:(NSString *)username password:(NSString *)password params:(NSString *)additionalParams {
	
	self.method = newMethod;
	requestData = [[NSMutableData alloc] initWithLength:0];
	
	// Create Request
	NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://readitlaterlist.com/v2/%@", method]];
	NSMutableURLRequest *request =  [ [NSMutableURLRequest alloc] initWithURL:url
												  cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
											  timeoutInterval:90];
	

	// Setup Request Data/Params
	NSMutableString *params = [NSMutableString stringWithFormat:@"apikey=%@&username=%@&password=%@", apikey, [ReadItLater encode:username], [ReadItLater encode:password]];
	if (additionalParams != nil) {
		[params appendFormat:@"&%@", additionalParams];
	}
	NSData *paramsData = [ NSData dataWithBytes:[params UTF8String] length:[params length] ];
	
	// Fill Request
	[request setHTTPMethod:@"POST"];
	[request setValue:nameOfYourApp!=nil?nameOfYourApp:@"RIL API iPhone Library v2.0" forHTTPHeaderField:@"User-Agent"];
	[request setHTTPBody:paramsData];
	

	// Start Connection
	[[NSURLConnection alloc]
	 initWithRequest:request
	 delegate:self
	 startImmediately:YES];
	
	[request release];
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSHTTPURLResponse *)response {
	
	self.apiResponse = [[response allHeaderFields] mutableCopy];
	[apiResponse setObject:[NSString stringWithFormat:@"%i", [response statusCode]] forKey:@"statusCode"];
	[apiResponse release];
	
	[requestData setLength:0];
}

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
	[requestData appendData:data];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

	self.stringResponse = [[NSString alloc] initWithData:requestData encoding:NSUTF8StringEncoding];
	[self.stringResponse release];
	
	[self finishConnection];
	[connection release];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
	self.apiResponse = [NSDictionary dictionaryWithObjectsAndKeys:@"X-Error",[error localizedDescription],nil];
	[self finishConnection];
	[connection release];	
}

-(void)finishConnection {
	
	// Determine Result
	NSString *statusCode = [apiResponse objectForKey:@"statusCode"];
	int success = (statusCode != nil && [statusCode isEqualToString:@"200"]);
	NSString *error = !success ? [apiResponse objectForKey:@"X-Error"] : nil;
	
	
	// Send to delegate
	
	SEL selector;
	
	if ([method isEqualToString:@"auth"]) 
	{
		selector = @selector(readItLaterLoginFinished:error:);
	}
	else if ([method isEqualToString:@"signup"]) 
	{
		selector = @selector(readItLaterSignupFinished:error:);
	}
	else if ([method isEqualToString:@"add"]) 
	{
		selector = @selector(readItLaterSaveFinished:error:);
	}
	
	if ([delegate respondsToSelector:selector]) {
		[delegate performSelector:selector withObject:stringResponse withObject:error];
	}
	
	[self done];
	
}

-(void)done {
	[self release];
}


/* --- */

+(NSString *)encode:(NSString *)string {
	CFStringRef encoded = CFURLCreateStringByAddingPercentEscapes(
															  kCFAllocatorDefault, 
															  (CFStringRef) string, 
															  nil, 
															  (CFStringRef)@"&+", 
															  kCFStringEncodingUTF8);  
	return [((NSString*) encoded) autorelease];
}

@end