module Ree
  module CLI
    class IndexProject
      class << self
        def run(project_path:)
          ENV['REE_SKIP_ENV_VARS_CHECK'] = 'true'

          path = Ree.locate_packages_schema(project_path)
          dir = Pathname.new(path).dirname.to_s

          Ree.init(dir)

          index_hash = {}
          index_hash[:classes] = {}

          facade = Ree.container.packages_facade

          facade.packages_store.packages.each do |package|
            next if package.gem?
            next if package.dir.nil?

            facade.load_entire_package(package.name)

            objects_class_names = package.objects.map(&:class_name)

            files = Dir[
              File.join(
                Ree::PathHelper.abs_package_module_dir(package), '**/*.rb'
              )
            ]

            files.each do |file_name|
              begin
                file_name_const_string = Ree::StringUtils.camelize(file_name.split('/')[-1].split('.rb')[0])
                const_string_with_module = "#{package.module}::#{file_name_const_string}"

                next if objects_class_names.include?(const_string_with_module) # skip objects

                klass = Object.const_get(const_string_with_module)

                methods = klass
                  .public_instance_methods(false)
                  .reject { _1.match?(/original/) } # remove aliases defined by contracts
                  .map {
                    {
                      name: _1,
                      location: klass.public_instance_method(_1).source_location&.last,
                    }
                  }

                hsh = {
                  path: file_name,
                  package: package.name,
                  methods: methods
                }

                index_hash[:classes][file_name_const_string] ||= []
                index_hash[:classes][file_name_const_string] << hsh
              rescue NameError
                next
              end
            end
          end

          JSON.pretty_generate(index_hash)
        end
      end
    end
  end
end