From 0e044bae1faf9175edffcc80c4b6c504ab3832bd Mon Sep 17 00:00:00 2001
From: Pavlo Kapinos <pavlo.kapinos@gmail.com>
Date: Fri, 3 Jul 2020 11:57:33 +0300
Subject: [PATCH] fix: swift 5.x support for script

---
 install.swift | 87 ++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 25 deletions(-)

diff --git a/install.swift b/install.swift
index d095874..d5e2d37 100644
--- a/install.swift
+++ b/install.swift
@@ -8,51 +8,88 @@
 
 import Foundation
 
-let templateName = "Module VIPER.xctemplate"
-let destinationRelativePath = "/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/Project Templates/iOS/Application"
+struct Constants {
 
-func printInConsole(_ message:Any){
-    print("====================================")
+    struct CommandLineValues {
+        static let yes = "YES"
+        static let no = "NO"
+    }
+    struct File {
+        static let templateName = "Module VIPER.xctemplate"
+        static let destinationRelativePath = "/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/Project Templates/iOS/Application"
+    }
+
+    struct Messages {
+        static let successMessage = "✅  Template was installed succesfully 🎉. Enjoy it 🙂"
+        static let successfullReplaceMessage = "✅  The Template has been replaced for you with the new version 🎉. Enjoy it 🙂"
+        static let errorMessage = "❌  Ooops! Something went wrong 😡"
+        static let exitMessage = "Bye Bye 👋"
+        static let promptReplace = "That Template already exists. Do you want to replace it? (YES or NO)"
+    }
+
+    struct Blocks {
+        static let printSeparator = { print("====================================") }
+    }
+}
+
+
+func printToConsole(_ message:Any){
+    Constants.Blocks.printSeparator()
     print("\(message)")
-    print("====================================")
+    Constants.Blocks.printSeparator()
 }
 
 func moveTemplate(){
-
-    let fileManager = FileManager.default
-    let destinationPath = bash(command: "xcode-select", arguments: ["--print-path"]).appending(destinationRelativePath)
     do {
-        if !fileManager.fileExists(atPath:"\(destinationPath)/\(templateName)"){
-        
-            try fileManager.copyItem(atPath: templateName, toPath: "\(destinationPath)/\(templateName)")
-            
-            printInConsole("✅  Template installed succesfully 🎉. Enjoy it 🙂")
-            
-        }else{
-            
-            try _ = fileManager.replaceItemAt(URL(fileURLWithPath:"\(destinationPath)/\(templateName)"), withItemAt: URL(fileURLWithPath:templateName))
-            
-            printInConsole("✅  Template already exists. So has been replaced succesfully 🎉. Enjoy it 🙂")
+        let fileManager = FileManager.default
+        let destinationPath = bash(command: "xcode-select", arguments: ["--print-path"]).appending(Constants.File.destinationRelativePath)
+        printToConsole("Template will be copied to: \(destinationPath)")
+        if !fileManager.fileExists(atPath: "\(destinationPath)/\(Constants.File.templateName)"){
+            try fileManager.copyItem(atPath: Constants.File.templateName, toPath: "\(destinationPath)/\(Constants.File.templateName)")
+            printToConsole(Constants.Messages.successMessage)
+
+        } else {
+            print(Constants.Messages.promptReplace)
+            var input = ""
+            repeat {
+                guard let textFormCommandLine = readLine(strippingNewline: true) else {
+                    continue
+                }
+                input = textFormCommandLine.uppercased()
+            } while(input != Constants.CommandLineValues.yes && input != Constants.CommandLineValues.no)
+
+            if input == Constants.CommandLineValues.yes {
+                try replaceItemAt(URL(fileURLWithPath: "\(destinationPath)/\(Constants.File.templateName)"), withItemAt: URL(fileURLWithPath: Constants.File.templateName))
+                printToConsole(Constants.Messages.successfullReplaceMessage)
+            } else {
+                print(Constants.Messages.exitMessage)
+            }
         }
     }
+
     catch let error as NSError {
-        printInConsole("❌  Ooops! Something went wrong 😡 : \(error.localizedFailureReason!)")
+        printToConsole("\(Constants.Messages.errorMessage) : \(error.localizedFailureReason!)")
     }
 }
 
-func shell(launchPath: String, arguments: [String]) -> String
-{
+func replaceItemAt(_ url: URL, withItemAt itemAtUrl: URL) throws {
+    let fileManager = FileManager.default
+    try fileManager.removeItem(at: url)
+    try fileManager.copyItem(atPath: itemAtUrl.path, toPath: url.path)
+}
+
+func shell(launchPath: String, arguments: [String]) -> String {
     let task = Process()
     task.launchPath = launchPath
     task.arguments = arguments
-    
+
     let pipe = Pipe()
     task.standardOutput = pipe
     task.launch()
-    
+
     let data = pipe.fileHandleForReading.readDataToEndOfFile()
     let output = String(data: data, encoding: String.Encoding.utf8)!
-    if output.characters.count > 0 {
+    if output.count > 0 {
         //remove newline character.
         let lastIndex = output.index(before: output.endIndex)
         return String(output[output.startIndex ..< lastIndex])