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# frozen_string_literal: true

module Rails
  module Generators
    module Database # :nodoc:
      JDBC_DATABASES = %w( jdbcmysql jdbcsqlite3 jdbcpostgresql jdbc )
      DATABASES = %w( mysql postgresql sqlite3 oracle frontbase ibm_db sqlserver ) + JDBC_DATABASES

      def initialize(*)
        super
        convert_database_option_for_jruby
      end

      def gem_for_database(database = options[:database])
        case database
        when "mysql"          then ["mysql2", [">= 0.4.4"]]
        when "postgresql"     then ["pg", [">= 0.18", "< 2.0"]]
        when "sqlite3"        then ["sqlite3", ["~> 1.4"]]
        when "oracle"         then ["activerecord-oracle_enhanced-adapter", nil]
        when "frontbase"      then ["ruby-frontbase", nil]
        when "sqlserver"      then ["activerecord-sqlserver-adapter", nil]
        when "jdbcmysql"      then ["activerecord-jdbcmysql-adapter", nil]
        when "jdbcsqlite3"    then ["activerecord-jdbcsqlite3-adapter", nil]
        when "jdbcpostgresql" then ["activerecord-jdbcpostgresql-adapter", nil]
        when "jdbc"           then ["activerecord-jdbc-adapter", nil]
        else [database, nil]
        end
      end

      def convert_database_option_for_jruby
        if defined?(JRUBY_VERSION)
          opt = options.dup
          case opt[:database]
          when "postgresql" then opt[:database] = "jdbcpostgresql"
          when "mysql"      then opt[:database] = "jdbcmysql"
          when "sqlite3"    then opt[:database] = "jdbcsqlite3"
          end
          self.options = opt.freeze
        end
      end

      private
        def mysql_socket
          @mysql_socket ||= [
            "/tmp/mysql.sock",                        # default
            "/var/run/mysqld/mysqld.sock",            # debian/gentoo
            "/var/tmp/mysql.sock",                    # freebsd
            "/var/lib/mysql/mysql.sock",              # fedora
            "/opt/local/lib/mysql/mysql.sock",        # fedora
            "/opt/local/var/run/mysqld/mysqld.sock",  # mac + darwinports + mysql
            "/opt/local/var/run/mysql4/mysqld.sock",  # mac + darwinports + mysql4
            "/opt/local/var/run/mysql5/mysqld.sock",  # mac + darwinports + mysql5
            "/opt/lampp/var/mysql/mysql.sock"         # xampp for linux
          ].find { |f| File.exist?(f) } unless Gem.win_platform?
        end
    end
  end
end