//
//  LyrDbInterface.m
//  LyricsHistogram
//
//  Created by Varun Mehta on 5/3/10.
//

#import "LyrDbInterface.h"


@implementation LyrDbInterface

+ (NSString *)lyricsForSong:(NSString *)song byArtist:(NSString *)artist
{
	NSString *parameter = [NSString stringWithFormat:@"%@%@%@", artist, @"|", song];
	NSString *cleanParameter = (NSString *)CFURLCreateStringByAddingPercentEscapes(
																				   NULL,
																				   (CFStringRef)parameter,
																				   (CFStringRef)@"",
																				   (CFStringRef)@"!*'();:@&=+$,/?%#[]",
																				   kCFStringEncodingUTF8 );
	NSString *dirtySearchUrl = [NSString
								stringWithFormat:@"http://webservices.lyrdb.com/lookup.php?q=%@&for=match&agent=agent",
								cleanParameter];
	//NSLog(@"%@", dirtySearchUrl);
	//NSString *escapedQueryUrl = [dirtySearchUrl stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
	NSString *escapedQueryUrl = dirtySearchUrl;
	//NSLog(@"%@", escapedQueryUrl);
	NSURLRequest *queryRequest = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:escapedQueryUrl]];
	NSData *queryResultsData = [NSURLConnection sendSynchronousRequest:queryRequest returningResponse:nil error:nil];
	[queryRequest release];
	//NSLog(@"%d", [queryResultsData length]);
	NSString *queryResultString = [[NSString alloc] initWithData:queryResultsData encoding:NSASCIIStringEncoding];
	//NSLog(@"%@", queryResultString);

	NSArray *splitResultLines = [queryResultString componentsSeparatedByString:@"\n"];
	[queryResultString release];
	if ([splitResultLines count] <= 1) return @"";
	
	NSString *lastString = [splitResultLines objectAtIndex:([splitResultLines count]-1)];
	NSString *lastSongId = [[lastString componentsSeparatedByString:@"\\"] objectAtIndex:0];
	//NSLog(@"%@", lastSongId);

	NSString *lyricUrl = [NSString stringWithFormat:@"http://webservices.lyrdb.com/getlyr.php?q=%@",
						  lastSongId];
	//NSLog(@"%@", lyricUrl);
	NSURLRequest *lyricRequest = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:lyricUrl]];
	NSData *lyricData = [NSURLConnection sendSynchronousRequest:lyricRequest returningResponse:nil error:nil];
	[lyricRequest release];
	NSString *lyricString = [[NSString alloc] initWithData:lyricData encoding:NSASCIIStringEncoding];
	NSLog(@"%@", lyricString);
	[lyricString autorelease];
	return lyricString;
}

@end