Fastfile configuration for promoting builds from QA to beta

Fastfile

platform :ios do

    lane :qa do
        increment_build_number

        # Produce the build here

        commit_version_bump
        add_git_tag
        push_to_git_remote

        # Push to HockeyApp
    end

    lane :beta do |options|
        original_branch = Actions.git_branch
        checkout_this = Actions.git_branch

        cmd = "git tag | grep iosqa"
        tags = Actions.sh(cmd, log:false).split("\n")
        if tags.count
            tag_vs_version = {}
            tags.each do |tag|
                elements = tag.split("/");
                version = elements.last.to_i
                tag_vs_version[version] = tag
            end
            tag_vs_version = tag_vs_version.sort.to_h
            checkout_this = tag_vs_version[tag_vs_version.keys.last]
            puts "QA tag found: using #{checkout_this}"
        else
            puts "No QA tags found for iOS"
        end
        Actions.sh("git checkout #{checkout_this}")

        # Produce your build here

        add_git_tag(
            build_number: get_build_number
        )

        # Revert to previous branch
        # In the case of QA tags, the repository will be in a detached-head state
        # and the push_to_git_remote action doesn't account for this
        Actions.sh("git checkout #{original_branch}")
        push_to_git_remote

        # Upload to TestFlight and notify testers
        pilot
    end

end