Fastlane PR Lane example

fastlane_ pr_lane_example.rb

default_platform(:ios)

GITHUB_REPO_NAME="your-repo-name" # Example: mdb1/fastlane-example 
GIT_DEFAULT_BRANCH="main"

platform :ios do
  desc "Description of what the lane does"
  lane :custom_lane do
    # add actions here: https://docs.fastlane.tools/actions
  end

  desc 'Prompt information and then create a Pull Request on Github'
  desc 'Options:'
  desc 'draft --- Determines if the PR is a draft or not (Default: false).'
  lane :pr do |options|
    # Check --draft param
    isDraft = options[:draft].nil? ? false : options[:draft]
    UI.message "Showing commit diff with main:"
    sh("git log --oneline --reverse main.. --pretty=format:'%s'")
    # Ask for the PR Title
    UI.message("Enter the PR title:")
    pr_title = STDIN.gets.chomp
    # Ask the user for the PR description
    pr_body = prompt_pr_description

    # Create the PR on GitHub.
    pr_url = create_pull_request(
      repo: GITHUB_REPO_NAME,
      title: pr_title,
      body: pr_body,
      draft: isDraft,
      base: GIT_DEFAULT_BRANCH
    )

    # Open the pull request URL in the default web browser
    sh("open #{pr_url}")
  end

  # Prompts information about a PR's description
  def prompt_pr_description
    pr_body = ""
  
    # Ask the user for the PR body
    UI.message("Enter the PR body (multiline text, press Ctrl+D on an empty line to finish):")
    while (line = STDIN.gets)
      pr_body += line
    end

    # Ask the user for the screenshot option and generate the markdown table
    screenshots_table = prompt_screenshots_table
  
    # Format the PR body as Markdown text
    markdown_text = <<~MARKDOWN
      ## Description
      #{pr_body}

      #{screenshots_table}
    MARKDOWN
  
    return markdown_text
  end

  # Let the user select an option to generate a markdown table for screenshots.
  def prompt_screenshots_table
    table_options = [
      "No screenshots",
      "Table: 1 column 1 row",
      "Table: 2 columns 1 row",
      "Table: 2 columns 2 rows",
      "Table: 3 columns 1 row",
      "Table: 3 columns 2 rows"
    ]

    # Ask the user for the screenshot option
    screenshot_option = nil
    loop do
      UI.message("Choose the screenshot option:")
      table_options.each_with_index { |option, index| UI.message("#{index + 1}. #{option}") }

      choice = UI.input("Enter the option number (1-#{table_options.size}):")
      choice_index = choice.to_i - 1

      if choice_index >= 0 && choice_index < table_options.size
        screenshot_option = table_options[choice_index]
        break
      else
        UI.error("Invalid option. Please enter a valid option number.")
      end
    end
  
    # Generate the markdown table based on the selected option
    case screenshot_option
    when "Table: 1 column 1 row"
      markdown_table = <<~MARKDOWN
        ## Screenshots
        | Title 1 |
        | - |
        | IMG 1 |
      MARKDOWN
    when "Table: 2 columns 1 row"
      markdown_table = <<~MARKDOWN
        ## Screenshots
        | Title 1 | Title 2 |
        | - | - |
        | IMG 1 | IMG 2 |
      MARKDOWN
    when "Table: 2 columns 2 rows"
      markdown_table = <<~MARKDOWN
        ## Screenshots
        | Title 1 | Title 2 |
        | - | - |
        | IMG 1 | IMG 2 |
        | IMG 3 | IMG 4 |
      MARKDOWN
    when "Table: 3 columns 1 row"
      markdown_table = <<~MARKDOWN
        ## Screenshots
        | Title 1 | Title 2 | Title 3 |
        | - | - | - |
        | IMG 1 | IMG 2 | IMG 3 |
      MARKDOWN
    when "Table: 3 columns 2 rows"
      markdown_table = <<~MARKDOWN
        ## Screenshots
        | Title 1 | Title 2 | Title 3 |
        | - | - | - |
        | IMG 1 | IMG 2 | IMG 3 |
        | IMG 4 | IMG 5 | IMG 6 |
      MARKDOWN
    else
      markdown_table = ""
    end
  
    return markdown_table
  end
end