ioquatix/activerecord-migrations

# Copyright, 2016, by Samuel G. D. Williams. <http://www.codeotaku.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# THE SOFTWARE.

require_relative 'tasks/db'

module ActiveRecord
    module Migrations
        class << self
            attr_accessor :root
            
            def migrations_root
                File.join(self.root, 'db/migrate')
            end
        end
        
        def self.database?
            !ActiveRecord::Base.connection.data_sources.empty?
        rescue ActiveRecord::NoDatabaseError
            false
        end
    end
    
    if defined? Tasks::DatabaseTasks
        module Tasks
            module DatabaseTasks
                def each_current_configuration(environment, spec_name = nil)
                    unless configuration = ActiveRecord::Base.configurations[environment]
                        raise ArgumentError.new("Cannot find configuration for environment #{environment.inspect} in #{ActiveRecord::Base.configurations.keys}")
                    end
                    
                    # This is a hack because DatabaseTasks functionality uses string for keys.
                    yield configuration.stringify_keys
                end
            end
        end
    end
end