ImnotyoursonURLProtocol.m

#import "ImnotyoursonURLProtocol.h"

#import "User.h"
#import "Article.h"
#import "GenericItem.h"

@implementation ImnotyoursonURLProtocol

+ (BOOL)canInitWithRequest:(NSURLRequest *)request
{
    return [request.URL.scheme isEqualToString:@"imnotyourson"];
}

+ (NSURLRequest *)canonicalRequestForRequest:(NSURLRequest *)request
{
    return request;
}

+ (BOOL)requestIsCacheEquivalent:(NSURLRequest *)a toRequest:(NSURLRequest *)b
{
    return NO;
}

- (void)startLoading
{
    // imnotyourson://user/123, imnotyourson://article/123
    NSString *path = [[[self.request.URL absoluteString] componentsSeparatedByString:@"//"] lastObject];
    GenericItem *item;
    NSArray *pathArray = [path componentsSeparatedByString:@"/"];
    NSString *type = [pathArray firstObject];
    NSString *id = [pathArray lastObject];
    if ([type isEqualToString:@"article"]) {
        item = [[Article alloc] init];
        item.type = @"article";
    } else if ([type isEqualToString:@"user"]) {
        item = [[User alloc] init];
        item.type = @"user";
    }
    item.id = id;

    NSData *data = [NSKeyedArchiver archivedDataWithRootObject:item];
    NSURLResponse *response = [[NSURLResponse alloc] initWithURL:self.request.URL MIMEType:@"text/plain" expectedContentLength:data.length textEncodingName:nil];
    
    [self.client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];
    [self.client URLProtocol:self didLoadData:data];
    [self.client URLProtocolDidFinishLoading:self];
}

- (void)stopLoading
{
    // start loading is sync operation, there's no way to stop
}

@end