Bash: automatically add a file to a Xcode project? - xcode

Question

I am creating a script.sh file that creates a Test.swift file and adds it into a Xcode project. However, I would like to know if there is a way to add this file to Xcode (in the project.pbxproj file) from this script? Instead of doing it manually in Xcode (Add files to Project...).
Thank you
3/05 Update
I tried #Johnykutty answer, here is my current Xcode project before executing the ruby script:
I have already generated a A folder with a Sample.swift file located in test, but these files are not linked to my Xcode project yet:
Now here is the script that I'm executing:
require 'xcodeproj'
project_path = '../TestCodeProjTest.xcodeproj'
project = Xcodeproj::Project.open(project_path)
file_group = project["TestCodeProjTest"]["test"]
file_group.new_file("#{project.project_dir}/TestCodeProjTest/test/A")
project.save()
This almost works fine, except that it creates a folder reference instead of a group, and it doesn't link it to my target:
Hence the content of Sample.swift is unreachable.

Answer 1

Its hard to achieve by bash. But really easy if you use Ruby and xcodeproj gem from Cocoapods
Consider you have file structure like
├── GeneratedFiles
│   └── Sample1.swift
├── MyProject
│   ├── AppDelegate.swift
│   ├── ... all other files
│   ├── SceneDelegate.swift
│   └── ViewController.swift
├── MyProject.xcodeproj
│   ├── project.pbxproj
│   ├── .....
└── add_file.rb
Then you can add files like
require 'xcodeproj'
project_path = 'MyProject.xcodeproj'
project = Xcodeproj::Project.open(project_path)
file_group = project["MyProject"]
file_group.new_file("../GeneratedFiles/Sample1.swift")
project.save()
UPDATE:
project["MyProject"] returns a file group which is a group named MyProject in the root of the project, you can select another group inside MyProject by file_group = project["MyProject"]["MyGroup"]
Then the generated file path should be either related to that group like file_group.new_file("../../GeneratedFiles/Sample1.swift") or full path like file_group.new_file("#{project.project_dir}/GeneratedFiles/Sample1.swift")
More details about Xcodeproj here