Sketch out the GIF manager.

// FREEBIE

Signal.xcodeproj/project.pbxproj

@@ -16,6 +16,7 @@
 		341BB7491DB727EE001E2975 /* JSQMediaItem+OWS.m in Sources */ = {isa = PBXBuildFile; fileRef = 341BB7481DB727EE001E2975 /* JSQMediaItem+OWS.m */; };
 		341F2C0F1F2B8AE700D07D6B /* DebugUIMisc.m in Sources */ = {isa = PBXBuildFile; fileRef = 341F2C0E1F2B8AE700D07D6B /* DebugUIMisc.m */; };
 		342FCE6B1EF9C375002690AD /* OWS105AttachmentFilePaths.m in Sources */ = {isa = PBXBuildFile; fileRef = 342FCE6A1EF9C375002690AD /* OWS105AttachmentFilePaths.m */; };
+		3430FE181F7751D4000EC51B /* GifManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3430FE171F7751D4000EC51B /* GifManager.swift */; };
 		34330A5A1E7875FB00DF2FB9 /* fontawesome-webfont.ttf in Resources */ = {isa = PBXBuildFile; fileRef = 34330A591E7875FB00DF2FB9 /* fontawesome-webfont.ttf */; };
 		34330A5C1E787A9800DF2FB9 /* dripicons-v2.ttf in Resources */ = {isa = PBXBuildFile; fileRef = 34330A5B1E787A9800DF2FB9 /* dripicons-v2.ttf */; };
 		34330A5E1E787BD800DF2FB9 /* ElegantIcons.ttf in Resources */ = {isa = PBXBuildFile; fileRef = 34330A5D1E787BD800DF2FB9 /* ElegantIcons.ttf */; };
@@ -418,6 +419,7 @@
 		341F2C0E1F2B8AE700D07D6B /* DebugUIMisc.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DebugUIMisc.m; sourceTree = "<group>"; };
 		342FCE691EF9C375002690AD /* OWS105AttachmentFilePaths.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = OWS105AttachmentFilePaths.h; path = Migrations/OWS105AttachmentFilePaths.h; sourceTree = "<group>"; };
 		342FCE6A1EF9C375002690AD /* OWS105AttachmentFilePaths.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = OWS105AttachmentFilePaths.m; path = Migrations/OWS105AttachmentFilePaths.m; sourceTree = "<group>"; };
+		3430FE171F7751D4000EC51B /* GifManager.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GifManager.swift; sourceTree = "<group>"; };
 		34330A591E7875FB00DF2FB9 /* fontawesome-webfont.ttf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "fontawesome-webfont.ttf"; sourceTree = "<group>"; };
 		34330A5B1E787A9800DF2FB9 /* dripicons-v2.ttf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "dripicons-v2.ttf"; sourceTree = "<group>"; };
 		34330A5D1E787BD800DF2FB9 /* ElegantIcons.ttf */ = {isa = PBXFileReference; lastKnownFileType = file; path = ElegantIcons.ttf; sourceTree = "<group>"; };
@@ -1406,6 +1408,7 @@
 		76EB041D18170B33006006FC /* network */ = {
 			isa = PBXGroup;
 			children = (
+				3430FE171F7751D4000EC51B /* GifManager.swift */,
 				B6B9ECFA198B31BA00C620D3 /* PushManager.h */,
 				B6B9ECFB198B31BA00C620D3 /* PushManager.m */,
 			);
@@ -2247,6 +2250,7 @@
 				3400C7961EAF99F4008A8584 /* SelectThreadViewController.m in Sources */,
 				34D5CCB11EAE7E7F005515DB /* SelectRecipientViewController.m in Sources */,
 				34B3F88F1E8DF1710035BE1A /* RegistrationViewController.m in Sources */,
+				3430FE181F7751D4000EC51B /* GifManager.swift in Sources */,
 				3448BFCD1EDF0EA7005B2D69 /* OWSMessagesInputToolbar.m in Sources */,
 				34B3F8901E8DF1710035BE1A /* AppSettingsViewController.m in Sources */,
 				34FD93701E3BD43A00109093 /* OWSAnyTouchGestureRecognizer.m in Sources */,

Signal/src/ViewControllers/HomeViewController.m

@@ -272,6 +272,8 @@ typedef NS_ENUM(NSInteger, CellState) { kArchiveState, kInboxState };
     }
 
     [self updateBarButtonItems];
+
+    [GifManager.sharedInstance test];
 }
 
 - (void)updateBarButtonItems

Signal/src/network/GifManager.swift

@@ -0,0 +1,83 @@
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
+
+import Foundation
+
+@objc class GifManager: NSObject {
+
+    // MARK: - Properties
+
+    static let TAG = "[GifManager]"
+
+    static let sharedInstance = GifManager()
+
+    // Force usage as a singleton
+    override private init() {}
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+
+    private let kGiphyBaseURL = "https://api.giphy.com/"
+
+    private func giphySessionManager() -> AFHTTPSessionManager? {
+        guard let baseUrl = NSURL(string:kGiphyBaseURL) else {
+            Logger.error("\(GifManager.TAG) Invalid base URL.")
+            return nil
+        }
+        // TODO: Is this right?
+        let sessionConf = URLSessionConfiguration.ephemeral
+        // TODO: Is this right?
+        sessionConf.connectionProxyDictionary = [
+                kCFProxyHostNameKey as String: "giphy-proxy-production.whispersystems.org",
+                kCFProxyPortNumberKey as String: "80",
+                kCFProxyTypeKey as String: kCFProxyTypeHTTPS
+        ]
+
+        let sessionManager = AFHTTPSessionManager(baseURL:baseUrl as URL,
+                                                  sessionConfiguration:sessionConf)
+        sessionManager.requestSerializer = AFJSONRequestSerializer()
+        sessionManager.responseSerializer = AFJSONResponseSerializer()
+
+        return sessionManager
+    }
+
+    public func test() {
+        guard let sessionManager = giphySessionManager() else {
+            Logger.error("\(GifManager.TAG) Couldn't create session manager.")
+            return
+        }
+        guard let baseUrl = NSURL(string:kGiphyBaseURL) else {
+            Logger.error("\(GifManager.TAG) Invalid base URL.")
+            return
+        }
+
+        // TODO: Should we use a separate API key?
+        let kGiphyApiKey = "3o6ZsYH6U6Eri53TXy"
+        let kGiphyPageSize = 200
+        // TODO:
+        let kGiphyPageOffset = 0
+        // TODO:
+        let query = "monkey"
+        // TODO:
+        guard let queryEncoded = query.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) else {
+            Logger.error("\(GifManager.TAG) Could not URL encode query: \(query).")
+            return
+        }
+//        Logger.error("\(GifManager.TAG) queryEncoded: \(queryEncoded) \(queryEncoded).")
+        let urlString = "/v1/gifs/search?api_key=\(kGiphyApiKey)&offset=\(kGiphyPageOffset)&limit=\(kGiphyPageSize)&q=\(queryEncoded)"
+//        Logger.error("\(GifManager.TAG) urlString: \(urlString).")
+//        Logger.error("\(GifManager.TAG) baseUrl: \(baseUrl).")
+
+        sessionManager.get(urlString,
+                           parameters: {},
+                           progress:nil,
+                           success: { _, value in
+                            Logger.error("\(GifManager.TAG) ---- success: \(value)")
+        },
+                           failure: { _, error in
+                            Logger.error("\(GifManager.TAG) ---- failure: \(error)")
+        })
+    }
+}