Deploying your app on a weekly basis via fastlane + Travis CI

git_url "https://#{ENV['GITHUB_SUBMODULES_USER']}@github.com/artsy/mobile_fastlane_match"

# Instead of 
# git_url "https://github.com/artsy/mobile_fastlane_match"

lane :setup_signing do
  setup_travis

  match(type: 'appstore')
end

# The main job for fastlane in this repo, you can run this on your computer
# You can run it via `bundle exec fastlane ship`
lane :ship do
  # We were having issues with building an a few folders deep.
  # The /Pods bit is because we can rely on it being there, see
  # this link: https://docs.fastlane.tools/advanced/#directory-behavior
  #
  Dir.chdir('../emission/Example/Pods') do
    gym workspace: 'Emission.xcworkspace',
        configuration: 'Deploy',
        scheme: 'Emission'
  end

  # [...]
end

# Get the last 10 lines of the CHANGELOG for Testflight
changelog = '../emission/CHANGELOG.md'
upcoming_release_notes = File.read(changelog).split("\n### ").first

# Ship to testflight
pilot(changelog: upcoming_release_notes)

# Do a tag, we use a http git remote so we can have push access
# as the default remote for travis is read-only. This needs to be
# inside the emission repo, instead of our own.
Dir.chdir('../emission/Example/') do
  tag = "deploy-#{latest_version}-#{build_version}"
  add_git_tag(key: tag)

  if ENV['GITHUB_SUBMODULES_USER']
    writable_remote = "https://#{ENV['GITHUB_SUBMODULES_USER']}@github.com/artsy/emission.git"
    sh "git remote add http #{writable_remote}"
  else
    sh 'git remote add http https://github.com/artsy/emission.git'
  end
  push_git_tags(remote: 'http')
end

# If the weekly task fails, then ship a message
error do |_, exception|
   slack message: "Error Deploying Emission: #{exception}",
         success: false,
         payload: { Output: exception.error_info.to_s }
end

# This is documented in the Artsy Blog: 
# http://artsy.github.io/blog/2017/07/31/fastlane-travis-weekly-deploys/
lane :setup do
  Dir.chdir('..') do
    sh 'rm -rf emission' if Dir.exist? 'Emission'
    sh 'git clone https://github.com/artsy/emission.git'
    Dir.chdir('emission') do
      sh '. ~/.nvm/nvm.sh && nvm use && npm install yarn --global && yarn install'
    end

    Dir.chdir('emission/Example') do
      sh 'pod repo update'
      sh 'pod install'
    end
    stamp_plist
  end
end

# Lets the CI run a bunch of jobs, and share ENV vars between them
lane :ci_deploy do
  setup_signing
  stamp_plist
  ship
end

# The main job for fastlane in this repo, you can run this on your computer
# You can run it via `bundle exec fastlane ship`
lane :ship do
  # We were having issues with building an a few folders deep.
  # The /Pods bit is because we can rely on it being there, see
  # this link: https://docs.fastlane.tools/advanced/#directory-behavior
  #
  Dir.chdir('../emission/Example/Pods') do
    gym(workspace: 'Emission.xcworkspace',
        configuration: 'Deploy',
        scheme: 'Emission')
  end

  # Get the last 10 lines of the CHANGELOG for Testflight
  changelog = '../emission/CHANGELOG.md'
  upcoming_release_notes = File.read(changelog).split("\n### ").first

  # Ship to testflight
  pilot(changelog: upcoming_release_notes)

  # Log into iTunes connect, get the latest version of the app we shipped, and how many builds we've sent
  Spaceship::Tunes.login(ENV['FASTLANE_USERNAME'], ENV['FASTLANE_PASSWORD'])
  app = Spaceship::Tunes::Application.find('net.artsy.Emission')
  latest_version = app.build_trains.keys.sort.last
  train = app.build_trains[latest_version]
  build_version = train.builds.count + 1

  # Do a tag, we use a http git remote so we can have push access
  # as the default remote for travis is read-only. This needs to be
  # inside the emission repo, instead of our own.
  Dir.chdir('../emission/Example/') do
    tag = "deploy-#{latest_version}-#{build_version}"
    add_git_tag(key: tag)

    if ENV['GITHUB_SUBMODULES_USER']
      writable_remote = "https://#{ENV['GITHUB_SUBMODULES_USER']}@github.com/artsy/emission.git"
      sh "git remote add http #{writable_remote}"
    else
      sh 'git remote add http https://github.com/artsy/emission.git'
    end

    push_git_tags(remote: 'http')
  end

  slack message: 'There is a new Emission beta available on Testflight.',
        payload: {
          'Version' => latest_version,
          "What's new" => upcoming_release_notes
        },
        default_payloads: []
end

# In case you need to update the signing profiles for this app
lane :update_signing do
  match(type: 'appstore')
end

# Used by CI, will not sneakily update (the CI only has read-only access to the repo anyway)
lane :setup_signing do
  setup_travis
  match(type: 'appstore')
end

# Minor plist modifications
lane :stamp_plist do
  plist = 'emission/Example/Emission/Info.plist'

  # Increment build number to current date
  build_number = Time.new.strftime('%Y.%m.%d.%H')
  `/usr/libexec/PlistBuddy -c "Set CFBundleVersion #{build_number}" "#{plist}"`
end

# Mainly so we don't forget to include these vars in the future
lane :validate_env_vars do
  unless ENV['FASTLANE_USERNAME'] && ENV['FASTLANE_PASSWORD'] && ENV['MATCH_PASSWORD']
    raise 'You need to set FASTLANE_USERNAME, FASTLANE_PASSWORD and MATCH_PASSWORD in your environment'
  end

  unless ENV['SLACK_URL']
    raise "You need to set SLACK_URL (#{ENV['SLACK_URL']}) in your environment."
  end
end

# If the weekly task fails, then ship a message, a success would also send
error do |_, exception|
  slack(message: "Error Deploying Emission: #{exception}",
        success: false,
        payload: { Output: exception.error_info.to_s })
end