Refactor Swift Demo and Document

.circleci/config.yml

@@ -7,6 +7,14 @@ jobs:
     steps:
       - checkout
 
+      - run:
+          name: "Install tooling"
+          command: brew install swiftlint
+
       - run:
           name: "Run Node SDK Demo"
           command: cd node && npm i && node src/index.js
+
+      - run:
+          name: "Run Swift SDK Demo"
+          command: cd swift && carthage bootstrap --platform mac && set -o pipefail && xcodebuild build -scheme Demo ONLY_ACTIVE_ARCH=YES    

.gitmodules

@@ -1,9 +0,0 @@
-[submodule "Carthage/Checkouts/XpringKit"]
-	path = swift/Carthage/Checkouts/XpringKit
-	url = https://github.com/xpring-eng/XpringKit.git
-[submodule "Carthage/Checkouts/grpc-swift"]
-	path = swift/Carthage/Checkouts/grpc-swift
-	url = https://github.com/grpc/grpc-swift.git
-[submodule "Carthage/Checkouts/swift-protobuf"]
-	path = swift/Carthage/Checkouts/swift-protobuf
-	url = https://github.com/apple/swift-protobuf.git

swift/.gitignore

@@ -5,8 +5,8 @@
 # Carthage
 #
 # Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
 
+Carthage/Checkouts
 Carthage/Build
 
 ### CocoaPods ###
@@ -98,4 +98,4 @@ iOSInjectionProject/
 
 ## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
 
-# End of https://www.gitignore.io/api/swift,xcode,carthage,cocoapods
+# End of https://www.gitignore.io/api/swift,xcode,carthage,cocoapods

swift/Cartfile

@@ -1,3 +1,2 @@
 github "xpring-eng/XpringKit"
-github "apple/swift-protobuf" "1.6.0"
-github "grpc/grpc-swift" "0.9.1"
+

swift/Cartfile.resolved

@@ -1,3 +1,3 @@
 github "apple/swift-protobuf" "1.6.0"
 github "grpc/grpc-swift" "0.9.1"
-github "xpring-eng/XpringKit" "1.0.2"
+github "xpring-eng/XpringKit" "1.3.0"

swift/Carthage/Checkouts/XpringKit/Carthage/Build

@@ -0,0 +1 @@
+../../../../Carthage/Build

swift/Carthage/Checkouts/XpringKit/Carthage/Checkouts/grpc-swift

@@ -0,0 +1 @@
+../../../../../Carthage/Checkouts/grpc-swift

swift/Carthage/Checkouts/XpringKit/Carthage/Checkouts/swift-protobuf

@@ -0,0 +1 @@
+../../../../../Carthage/Checkouts/swift-protobuf

swift/README.md

@@ -1 +1,20 @@
-# XpringKit demo
+# Swift Demo
+
+<img src="swift-demo.png" alt="Screenshot of the Xpring SDK Demo"/>
+
+Demonstrates [XpringKit](http://github.com/xpring-eng/xpringkit). 
+
+This demo builds using [Carthage](https://github.com/Carthage/Carthage) but it is also possible to build XpringKit with [CocoaPods](https://cocoapods.org/).
+
+To build:
+```shell
+# Install required tooling
+brew install carthage swiftlint
+
+# Install dependencies
+carthage bootsrap
+
+# Run in XCode.
+open XpringKit.xcodeproj
+```
+

swift/Sources/main.swift

@@ -0,0 +1,35 @@
+import Foundation
+import XpringKit
+
+// A URL to reach the remote rippled node at.
+let grpcAddress = "3.14.64.116:50051"
+
+// A wallet that exists on Testnet.
+let seed = "snYP7oArxKepd3GPDcrjMsJYiJeJB";
+guard let wallet = Wallet(seed: seed) else {
+  print("The given seed is not valid: \(seed)")
+  exit(0)
+}
+
+// A recipient address.
+let recipientAddress = "X7cBcY4bdTTzk3LHmrKAK6GyrirkXfLHGFxzke5zTmYMfw4"
+let dropsToSend: UInt64 = 10
+
+print("\nUsing rippled node located at: \(grpcAddress)\n")
+let xrpClient = XpringClient(grpcURL: grpcAddress, useNewProtocolBuffers: true)
+
+print("Retrieving balance for \(wallet.address) ..")
+let balance = try xrpClient.getBalance(for: wallet.address)
+
+print("Balance was \(balance) drops!\n")
+
+print("Sending:")
+print("- Drops \(dropsToSend)")
+print("- To: \(recipientAddress)")
+print("- From: \(wallet.address)\n")
+let hash = try xrpClient.send(dropsToSend, to: recipientAddress, from: wallet)
+
+print("Hash for transaction:\n\(hash)\n")
+
+let status = try xrpClient.getTransactionStatus(for: hash)
+print("Result for transaction is:\n\(status)\n");