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# frozen_string_literal: true
require "rails/generators/base"
module Rails
module Generators
module Db
module System
class ChangeGenerator < Base # :nodoc:
include Database
include AppName
class_option :to, required: true,
desc: "The database system to switch to."
def self.default_generator_root
path = File.expand_path(File.join(base_name, "app"), base_root)
path if File.exist?(path)
end
def initialize(*)
super
unless DATABASES.include?(options[:to])
raise Error, "Invalid value for --to option. Supported preconfigurations are: #{DATABASES.join(", ")}."
end
opt = options.dup
opt[:database] ||= opt[:to]
self.options = opt.freeze
end
def edit_database_config
template("config/databases/#{options[:database]}.yml", "config/database.yml")
end
def edit_gemfile
database_gem_name, _ = gem_for_database
gsub_file("Gemfile", all_database_gems_regex, database_gem_name)
end
private
def all_database_gems
DATABASES.map { |database| gem_for_database(database) }
end
def all_database_gems_regex
all_database_gem_names = all_database_gems.map(&:first)
/(\b#{all_database_gem_names.join('\b|\b')}\b)/
end
end
end
end
end
end
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