Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/Extensions/Accounts/Sources/ACAccountStore+AnyPromise.h

@@ -0,0 +1,66 @@
+//
+//  Created by merowing on 09/05/2014.
+//
+//
+//
+
+#import <PromiseKit/AnyPromise.h>
+#import <Accounts/ACAccountStore.h>
+
+/**
+ To import the `ACAccountStore` category:
+
+    use_frameworks!
+    pod "PromiseKit/Accounts"
+ 
+ And then in your sources:
+
+    @import PromiseKit;
+*/
+@interface ACAccountStore (PromiseKit)
+
+/**
+ Obtains permission to access protected user properties.
+
+ @param type The account type.
+
+ @param options Can be nil.
+
+ @return A promise that resolves when the requested permissions have been
+ successfully obtained. The promise thens all accounts of the specified
+ type.
+
+ @see requestAccessToAccountsWithType:options:completion:
+*/
+- (AnyPromise *)requestAccessToAccountsWithType:(ACAccountType *)type options:(NSDictionary *)options NS_REFINED_FOR_SWIFT;
+
+/**
+ Renews account credentials when the credentials are no longer valid.
+
+ @param account The account to renew credentials.
+
+ @return A promise that thens the `ACAccountCredentialRenewResult`.
+*/
+- (AnyPromise *)renewCredentialsForAccount:(ACAccount *)account NS_REFINED_FOR_SWIFT;
+
+/**
+ Saves an account to the Accounts database.
+
+ @param account The account to save.
+
+ @return A promise that resolves when the account has been successfully
+ saved.
+*/
+- (AnyPromise *)saveAccount:(ACAccount *)account NS_REFINED_FOR_SWIFT;
+
+/**
+ Removes an account from the account store.
+
+ @param account The account to remove.
+
+ @return A promise that resolves when the account has been successfully
+ removed.
+*/
+- (AnyPromise *)removeAccount:(ACAccount *)account NS_REFINED_FOR_SWIFT;
+
+@end

Carthage/Checkouts/PromiseKit/Extensions/Accounts/Sources/ACAccountStore+AnyPromise.m

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+#import "ACAccountStore+AnyPromise.h"
+#import <PromiseKit/PromiseKit.h>
+
+
+@implementation ACAccountStore (PromiseKit)
+
+- (AnyPromise *)requestAccessToAccountsWithType:(ACAccountType *)type options:(NSDictionary *)options {
+    return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
+        [self requestAccessToAccountsWithType:type options:options completion:^(BOOL granted, NSError *error) {
+            if (granted) {
+                resolve([self accountsWithAccountType:type]);
+            } else if (error) {
+                resolve(error);
+            } else {
+                error = [NSError errorWithDomain:PMKErrorDomain code:PMKAccessDeniedError userInfo:@{
+                    NSLocalizedDescriptionKey: @"Access to the requested social service has been denied. Please enable access in your device settings."
+                }];
+                resolve(error);
+            }
+        }];
+    }];
+}
+
+- (AnyPromise *)renewCredentialsForAccount:(ACAccount *)account {
+    return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
+        [self renewCredentialsForAccount:account completion:^(ACAccountCredentialRenewResult renewResult, NSError *error) {
+            resolve(error ?: @(renewResult));
+        }];
+    }];
+}
+
+- (AnyPromise *)saveAccount:(ACAccount *)account {
+    return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
+        [self saveAccount:account withCompletionHandler:^(BOOL success, NSError *error) {
+            resolve(error);
+        }];
+    }];
+}
+
+- (AnyPromise *)removeAccount:(ACAccount *)account {
+    return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
+        [self removeAccount:account withCompletionHandler:^(BOOL success, NSError *error) {
+            resolve(error);
+        }];
+    }];
+}
+
+@end

Carthage/Checkouts/PromiseKit/Extensions/Accounts/Sources/ACAccountStore+Promise.swift

@@ -0,0 +1,59 @@
+import Accounts
+#if !PMKCocoaPods
+import PromiseKit
+#endif
+
+/**
+ To import the `ACAccountStore` category:
+
+    use_frameworks!
+    pod "PromiseKit/ACAccountStore"
+
+ And then in your sources:
+
+    import PromiseKit
+*/
+extension ACAccountStore {
+    /// Renews account credentials when the credentials are no longer valid.
+    public func renewCredentials(for account: ACAccount) -> Promise<ACAccountCredentialRenewResult> {
+        return Promise { renewCredentials(for: account, completion: $0.resolve) }
+    }
+
+    /// Obtains permission to access protected user properties.
+    public func requestAccessToAccounts(with type: ACAccountType, options: [AnyHashable: Any]? = nil) -> Promise<Void> {
+        return Promise { seal in
+            requestAccessToAccounts(with: type, options: options, completion: { granted, error in
+                if granted {
+                    seal.fulfill(())
+                } else if let error = error {
+                    seal.reject(error)
+                } else {
+                    seal.reject(PMKError.accessDenied)
+                }
+            })
+        }
+    }
+
+    /// Saves an account to the Accounts database.
+    public func saveAccount(_ account: ACAccount) -> Promise<Void> {
+        return Promise { saveAccount(account, withCompletionHandler: $0.resolve) }.asVoid()
+    }
+
+    /// Removes an account from the account store.
+    public func removeAccount(_ account: ACAccount) -> Promise<Void> {
+        return Promise { removeAccount(account, withCompletionHandler: $0.resolve) }.asVoid()
+    }
+
+    /// PromiseKit ACAccountStore errors
+    public enum PMKError: Error, CustomStringConvertible {
+        /// The request for accounts access was denied.
+        case accessDenied
+
+        public var description: String {
+            switch self {
+            case .accessDenied:
+                return "Access to the requested social service has been denied. Please enable access in your device settings."
+            }
+        }
+    }
+}