production => happy-branch
staging4   => rc99.4.0
uct        => ui4
fixture    => upgrade-webpack
saintbox   => mistery-branch

class Slack::SlashCommandsController < Slack::BaseCommandsController
  include Slack::CustomMessage

  def release_notes
    render status: 200, :json => message('Aye aye! please hold your seat, this can take a while 🕐')
    HardWorker.perform_async(release_notes_params.to_h)
  end

  def whats_running_where
    whats_running_where_command = DeployedBranch::BranchNames.call

    if whats_running_where_command.success?
      branches_data = whats_running_where_command.deployed_branches
      render status: 200, :json => message_attachments(deployed_branch_messages(branches_data))
    else
      render status: 200, :json => message(whats_running_where_command.error)
    end
  end

  def whats_in
    branch_name_command = DeployedBranch::BranchName.call(environment: params['text'])

    if branch_name_command.success?
      branch_data = branch_name_command.deployed_branch
      render status: 200, :json => message_attachments(deployed_branch_messages(branch_data))
    else
      render status: 200, :json => message(branch_name_command.error)
    end
  end

end

class DeployedBranch::BranchName
  include HTTParty
  include AyeCommander::Command

  requires :environment
  returns :deployed_branch, :error
  basic_auth Rails.application.secrets.basic_auth['username'], Rails.application.secrets.basic_auth['password']

  before do
    @url = generate_url
  end

  def call
    get_revision
    parse_revision
  end

  def get_revision
    response  = HTTParty.get(@url)
    @revision = response.body.strip!

  rescue SocketError => e
    Rails.logger.error(e.message)
    @error = "That enviroment doesn't exits, are you sure you typed it correctly? 🤔"
    fail!(:invalid_environment_name) && abort!
  end

  def parse_revision
    response = @revision.split(' ')

    @deployed_branch = {}.tap do |h|
      h[:environment] = environment.capitalize
      h[:branch]      = response[1]
      h[:version]     = response[3].strip[0..7]
      h[:timestamp]   = response[7].to_time.to_formatted_s(:long)
      h[:author]      = response[9]
    end
  end


  def generate_url
    base_url = Rails.application.secrets.base_uri
    if environment.to_sym == :production
      "https://#{base_url}/REVISION.txt"
    else
      "https://#{environment}.#{base_url}/REVISION.txt"
    end
  end

end

class ReleaseNotes::GenericRepo
  include AyeCommander::Command

  requires :repository_name, :target_branch
  returns :release_notes, :error

  before do
    @adapter = initialize_git
  end

  def call
    prepare_branch
    get_release_notes
  end

  def initialize_git
    ReleaseNotes::RepoAdapter.get(repository_name)
  rescue => e
    Rails.logger.error e.message
    @error = "Beep Bop Boop, I couldn't find repository *#{repository_name}*, are you sure it exists? 👁"
    fail!(:invalid_repository_name) && abort!
  end

  def prepare_branch
    @adapter.prepare_branch(target_branch)
  rescue => e
    Rails.logger.error e.message
    @error = "Error fetching branch: #{target_branch}, are you sure it exists in remote? 😱"
    fail!(:invalid_branch_name) && abort!
  end

  def get_release_notes
    begin
      @release_notes = @adapter.release_notes(@branch)
    rescue => e
      Rails.logger.error e.message
      @error = "Erro: Something is burning 🔥🚒!"
      fail!(:something_went_wrong) && abort!
    end
  end
end

class ReleaseNotes::GithubRepo

  def initialize
    @git = Git.open(Rails.application.secrets.github_repository)
  end

  def prepare_branch(branch)
    @git.checkout(:master)
    @git.pull

    @git.checkout(branch)
    @git.pull(:origin, branch)
  end

  def release_notes(branch)
      release_notes = []
      @git.log(MAX_LOG_NUM).between(:master, branch).each do |commit|
        commit_array = @git.object(commit).contents.split("\n").reject!(&:empty?)
        commit_array.each do |message|
          if message =~ /Merge pull request #/
            release_notes << "#{message.scan(/#\d+/).first} #{commit_array.last}"
          end
        end
      end
      release_notes
  end

end