(Huge PR) Refactor to support linkding and self-hosted delicious.

Factories/QSBookmarkProviderFactory.h

@@ -0,0 +1,32 @@
+//
+//  QSBookmarkProviderFactory.h
+//  QSDeliciousPlugIn
+//
+//  Factory for managing bookmark providers
+//
+
+#import "QSBookmarkProvider.h"
+#import "SocialSite.h"
+#import <Foundation/Foundation.h>
+
+@interface QSBookmarkProviderFactory : NSObject
+
+@property(nonatomic, strong, readonly)
+    NSArray<id<QSBookmarkProvider>> *providers;
+
++ (instancetype)sharedFactory;
+
+/**
+ * Get the appropriate provider for the given site configuration
+ */
+- (id<QSBookmarkProvider>)providerForSite:(SocialSite)site
+                                 username:(NSString *)username
+                                 password:(NSString *)password
+                                     host:(NSString *)host;
+
+/**
+ * Get all available providers
+ */
+- (NSArray<id<QSBookmarkProvider>> *)allProviders;
+
+@end

Factories/QSBookmarkProviderFactory.m

@@ -0,0 +1,70 @@
+//
+//  QSBookmarkProviderFactory.m
+//  QSDeliciousPlugIn
+//
+
+#import "QSBookmarkProviderFactory.h"
+#import "QSDeliciousAPIProvider.h"
+#import "QSLinkdingProvider.h"
+#import "SocialSite.h"
+
+@interface QSBookmarkProviderFactory ()
+@property(nonatomic, strong, readwrite)
+    NSArray<id<QSBookmarkProvider>> *providers;
+@end
+
+@implementation QSBookmarkProviderFactory
+
++ (instancetype)sharedFactory {
+  static QSBookmarkProviderFactory *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[self alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    [self setupProviders];
+  }
+  return self;
+}
+
+- (void)setupProviders {
+  NSMutableArray *mutableProviders = [NSMutableArray array];
+
+  // Create Delicious / Pinboard API providers for each supported site
+  QSDeliciousAPIProvider *deliciousAPIProvider =
+      [[QSDeliciousAPIProvider alloc] init];
+
+  // Create Linkding provider
+  QSLinkdingProvider *linkdingProvider = [[QSLinkdingProvider alloc] init];
+
+  [mutableProviders addObject:deliciousAPIProvider];
+  [mutableProviders addObject:linkdingProvider];
+
+  self.providers = [mutableProviders copy];
+}
+
+- (id<QSBookmarkProvider>)providerForSite:(SocialSite)site
+                                 username:(NSString *)username
+                                 password:(NSString *)password
+                                     host:(NSString *)host {
+  for (id<QSBookmarkProvider> provider in self.providers) {
+    if ([provider canHandleSite:site
+                       username:username
+                       password:password
+                           host:host]) {
+      return provider;
+    }
+  }
+  return nil;
+}
+
+- (NSArray<id<QSBookmarkProvider>> *)allProviders {
+  return self.providers;
+}
+
+@end

Info.plist

@@ -15,9 +15,9 @@
 	<key>CFBundlePackageType</key>
 	<string>BNDL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.1.0</string>
+	<string>3.0.0</string>
 	<key>CFBundleVersion</key>
-	<string>131</string>
+	<string>150</string>
 	<key>NSPrincipalClass</key>
 	<string>QSDeliciousPlugIn</string>
 	<key>QSPlugIn</key>
@@ -42,7 +42,7 @@
 		</dict>
 		<key>QSObjectHandlers</key>
 		<dict>
-			<key>us.icio.del.tag</key>
+			<key>qs.tag.socialbookmark</key>
 			<string>QSDeliciousPlugIn_Source</string>
 		</dict>
 		<key>QSObjectSources</key>

Protocols/QSBookmarkProvider.h

@@ -0,0 +1,45 @@
+//
+//  QSBookmarkProvider.h
+//  QSDeliciousPlugIn
+//
+//  Protocol for social bookmark providers
+//
+
+#import "SocialSite.h"
+#import <Foundation/Foundation.h>
+
+@class QSObject;
+
+@protocol QSBookmarkProvider <NSObject>
+
+@required
+/**
+ * Check if this provider can handle the given site configuration
+ */
+- (BOOL)canHandleSite:(SocialSite)site
+             username:(NSString *)username
+             password:(NSString *)password
+                 host:(NSString *)host;
+
+/**
+ * Fetch bookmarks for the given configuration
+ * Returns an NSArray of QSObject instances
+ */
+- (NSArray *)fetchBookmarksForSite:(SocialSite)site
+                          username:(NSString *)username
+                          password:(NSString *)password
+                        identifier:(NSString *)identifier
+                              host:(NSString *)host
+                       includeTags:(BOOL)includeTags;
+
+@optional
+/**
+ * Get bookmarks for a specific tag (used for child loading)
+ */
+- (NSArray *)fetchBookmarksForTag:(NSString *)tag
+                             site:(SocialSite)site
+                         username:(NSString *)username
+                         password:(NSString *)password
+                             host:(NSString *)host;
+
+@end

Providers/QSDeliciousAPIProvider.h

@@ -0,0 +1,30 @@
+//
+//  QSDeliciousAPIProvider.h
+//  QSDeliciousPlugIn
+//
+//  Base provider for Pinboard v1 API (XML-based with Basic Auth)
+//  Used by Delicious, Magnolia, and Pinboard
+//
+
+#import "QSBookmarkProvider.h"
+#import <Foundation/Foundation.h>
+
+@interface QSDeliciousAPIProvider
+    : NSObject <QSBookmarkProvider, NSXMLParserDelegate>
+
+@property(nonatomic, strong) NSMutableArray *posts;
+
+- (NSString *)apiURLForSite:(SocialSite)site andHost:(NSString *)host;
+- (NSURL *)requestURLForSite:(SocialSite)site
+                    username:(NSString *)username
+                    password:(NSString *)password
+                        host:(NSString *)host;
+- (NSData *)cachedBookmarkDataForSite:(SocialSite)site
+                             username:(NSString *)username
+                                 host:(NSString *)host;
+- (void)cacheBookmarkData:(NSData *)data
+                  forSite:(SocialSite)site
+                 username:(NSString *)username
+                     host:(NSString *)host;
+
+@end