class Jets::Resource::ChildStack::AppClass

def self.common_parameters
  parameters = {
    IamRole: "!GetAtt IamRole.Arn",
    S3Bucket: "!Ref S3Bucket",
  }
  parameters[:GemLayer] = "!Ref GemLayer" unless Jets.poly_only?
  parameters
end

def app_logical_id
  regexp = Regexp.new(".*#{Jets.config.project_namespace}-app-")
  controller_name = @path.sub(regexp, '').sub('.yml', '')
  controller_name.underscore.camelize
end

def controller?
  @path.include?('_controller.yml')
end

def controller_params
  return {} if Jets::Router.routes.empty?
  params = {
    RestApi: "!GetAtt ApiGateway.Outputs.RestApi",
  }
  scoped_routes.each do |route|
    resource = Jets::Resource::ApiGateway::Resource.new(route.path)
    params[resource.logical_id] = "!GetAtt ApiGateway.Outputs.#{resource.logical_id}"
  end
  params
end

def current_app_class
  templates_prefix = "#{Jets::Naming.template_path_prefix}-app-"
  @path.sub(templates_prefix, '')
    .sub(/\.yml$/,'')
    .gsub('-','/')
    .camelize
end

def definition
  logical_id = app_logical_id
  defintion = {
    logical_id => {
      type: "AWS::CloudFormation::Stack",
      properties: {
        template_url: template_url,
        parameters: parameters,
      }
    }
  }
  defintion[logical_id][:depends_on] = depends_on if depends_on
  defintion
end

def depends_on
  klass = current_app_class.constantize
  return unless klass.depends_on
  depends = Jets::Stack::Depends.new(klass.depends_on)
  depends.stack_list
end

def depends_on_params
  klass = current_app_class.constantize
  return unless klass.depends_on
  depends = Jets::Stack::Depends.new(klass.depends_on)
  depends.params
end

def initialize(s3_bucket, options={})
  super
  @path = options[:path]
end

def parameters
  common = self.class.common_parameters
  common.merge!(controller_params) if controller?
  common.merge!(depends_on_params) if depends_on
  common
end

def scoped_routes
  @routes ||= Jets::Router.routes.select do |route|
    route.controller_name == current_app_class
  end
end

def template_filename
  @path
end