# Terminal
bin/rails g model release task
bin/rails g task release execute
bin/rails g task hello world
bin/rails g task company something

# Just a neat example of executing code from the shell
bin/rails runner "Release.all.destroy_all"

# Add in your deployment scripts
bin/rails release:execute

# lib/tasks/release.rake
require 'task_runner'

namespace :release do
  desc "Rake tasks execute each release"
  task execute: :environment do
    TaskRunner.execute("hello:world", force_run: true)
    TaskRunner.execute("company:something")
    TaskRunner.execute("company:bad")
    TaskRunner.execute("company:something")
  end
end

# lib/tasks/task_runner.rb
class TaskRunner
  def self.execute(task, force_run: false)
    new(task, force_run).execute
  end

  def initialize(task, force_run)
    @task = task
    @force_run = force_run
  end

  def execute
    puts "\n\n"
    return if already_executed?

    puts green("#{@task} execute started.")
    start_timer
    Rake::Task[@task].invoke
    stop_timer
    puts green("#{@task} finished in #{elapsed_time} seconds.")

    record_task_record
  rescue StandardError => e
    puts red("#{@task} failed. Error: #{e.message}")
  end

  private

  def already_executed?
    return false if @force_run == true

    executed = Release.find_by(task: @task).present?
    puts yellow("#{@task} already executed.") if executed
    executed
  end

  def start_timer
    @start_timer ||= Time.now.to_f
  end

  def stop_timer
    @stop_timer ||= Time.now.to_f
  end

  def elapsed_time
    '%.2f' % (stop_timer - start_timer)
  end

  def record_task_record
    return if @force_run == true
    Release.create(task: @task)
  end

  def red(string); "\e[31m#{string}\e[0m"; end
  def green(string); "\e[32m#{string}\e[0m"; end
  def yellow(string); "\e[33m#{string}\e[0m"; end
end

# lib/tasks/hello.rake
namespace :hello do
  desc "Say hello"
  task world: :environment do
    puts "Hello World!"
    sleep 0.5
  end
end

# lib/tasks/company.rake
namespace :company do
  desc "change records or something"
  task something: :environment do
    puts "this is the company something rake task"
    puts "this rake task (company:something) is being executed"
  end

  desc "bad code"
  task bad: :environment do
    puts "bad code"
    raise "this is an error"
  end
end