ADD repository languages percentage api

app/controllers/concerns/repository/languages_percentagable.rb

@@ -0,0 +1,19 @@
+module Repository::LanguagesPercentagable
+  extend ActiveSupport::Concern
+
+  def languages_precentagable
+    result = Gitea::Repository::Languages::ListService.call(@owner.login,
+      @repository.identifier, current_user&.gitea_token)
+
+    result[:status] === :success ? hash_transform_precentagable(result[:body]) : nil
+  end
+
+  # hash eq:{"JavaScript": 301681522,"Ruby": 1444004,"Roff": 578781}
+  def hash_transform_precentagable(hash)
+    total_byte_size = hash.values.sum
+    hash.transform_values { |v|
+      ActionController::Base.helpers
+        .number_to_percentage((v * 100.0 / total_byte_size), precision: 1)
+    }
+  end
+end

app/controllers/repositories_controller.rb

@@ -1,6 +1,7 @@
 class RepositoriesController < ApplicationController
   include ApplicationHelper
   include OperateProjectAbilityAble
+  include Repository::LanguagesPercentagable
 
   before_action :require_login, only: %i[edit update create_file update_file delete_file sync_mirror]
   before_action :load_repository
@@ -140,6 +141,10 @@ class RepositoriesController < ApplicationController
     render json: @readme
   end
 
+  def languages
+    render json: languages_precentagable
+  end
+
   private
 
   def find_project

app/services/gitea/repository/languages/list_service.rb

@@ -0,0 +1,39 @@
+# Get languages and number of bytes of code written
+class Gitea::Repository::Languages::ListService < Gitea::ClientService
+  attr_reader :owner, :repo, :token
+
+  # owner: owner of the repo
+  # repo: the name of repository
+  # token: token of gitea user
+  # eq: Gitea::Repository::Languages::ListService.call(@owner.identifier,
+  # @project.identifier, current_user&.gitea_token)
+  def initialize(owner, repo, token)
+    @owner = owner
+    @repo  = repo
+    @args  = token
+  end
+
+  def call
+    response = get(url, params)
+
+    status, message, body = render_response(response)
+    json_format(status, message, body)
+  end
+
+  private
+  def params
+    {}.merge(token: token)
+  end
+
+  def url
+    "/repos/#{owner}/#{repo}/languages".freeze
+  end
+
+  def json_format(status, message, body)
+    case status
+    when 200 then success(body)
+    else
+      error(message, status)
+    end
+  end
+end