Tasks: Initial `user:create` task. (#4761)

* Tasks: Initial `user:create` task.

* Tasks: Colorized the logging methods.
	+ Minor refactoring.

* Tasks: Removed unrequired features.

* Tasks: Added `admin:create` task.

.rubocop.yml

@@ -81,3 +81,11 @@ Metrics/CyclomaticComplexity:
 Metrics/PerceivedComplexity:
   Max: 13
 
+Rails/Exit:
+  Exclude:
+    - 'lib/tasks/task_helpers.rb'
+
+Rails/Output:
+  Exclude:
+    - 'lib/tasks/task_helpers.rb'
+

lib/tasks/admin.rake

+# frozen_string_literal: true
+
+require_relative 'task_helpers'
+
+namespace :admin do
+  desc 'Create an administrator account'
+  task :create, %i[name email password] => :environment do |_task, args|
+    # Default values.
+    admin = {
+      name: 'Administrator',
+      email: 'admin@example.com',
+      password: 'Administrator1!'
+    }.merge(args)
+
+    Rake::Task['user:create'].invoke(admin[:name], admin[:email], admin[:password], 'Administrator')
+
+    exit 0
+  end
+end

lib/tasks/task_helpers.rb

+# frozen_string_literal: true
+
+COLORS = {
+  # https://www.ing.iac.es/~docs/external/bash/abs-guide/colorizing.html.
+  black: 30,
+  red: 31,
+  green: 32,
+  yellow: 33,
+  blue: 34,
+  magenta: 35,
+  cyan: 36,
+  white: 37
+}.freeze
+
+def err(msg)
+  color = COLORS[:red]
+
+  warn "\033[#{color}m#{msg}\033[0m"
+  exit 1
+end
+
+def warning(msg)
+  color = COLORS[:yellow]
+
+  warn "\033[#{color}m#{msg}\033[0m"
+end
+
+def info(msg)
+  color = COLORS[:cyan]
+
+  puts "\033[#{color}m#{msg}\033[0m"
+end
+
+def success(msg)
+  color = COLORS[:green]
+
+  puts "\033[#{color}m#{msg}\033[0m"
+end

lib/tasks/user.rake

+# frozen_string_literal: true
+
+require_relative 'task_helpers'
+
+namespace :user do
+  desc 'Create a user'
+  task :create, %i[name email password role] => :environment do |_task, args|
+    # Default values.
+    user = {
+      provider: 'greenlight',
+      verified: true,
+      status: :active,
+      language: I18n.default_locale
+    }.merge(args)
+
+    check_role!(user:)
+    user = User.new(user)
+
+    display_user_errors(user:) unless user.save
+
+    success 'User account was created successfully!'
+    info "  Name: #{user.name}"
+    info "  Email: #{user.email}"
+    info "  Password: #{user.password}"
+    info "  Role: #{user.role.name}"
+
+    exit 0
+  end
+
+  private
+
+  def check_role!(user:)
+    role_name = user[:role]
+    user[:role] = Role.find_by(name: role_name, provider: 'greenlight')
+    return if user[:role]
+
+    warning "Unable to create user: '#{user[:name]}'"
+    err "   Role '#{role_name}' does not exist, maybe you have not run the DB migrations?"
+  end
+
+  def display_user_errors(user:)
+    warning "Unable to create user: '#{user.name}'"
+    err "   Failed to pass the following validations:\n    #{user.errors.to_a}"
+  end
+end