Conflits resolved

.ruby-version

@@ -0,0 +1 @@
+3.3.1

backend/app/controllers/api/v1/handle_file_controller.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class HandleFileController < Api::ApplicationController
+      include HandleFileHelper
+
+      def import
+        rows = set_rows_to_json(params[:file].tempfile)
+        render json: { file_rows: rows }, status: :ok
+      end
+    end
+  end
+end

backend/app/helpers/handle_file_helper.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require "csv"
+
+module HandleFileHelper
+  def rows_to_json(file)
+    file_parsed = parse_csv(file)
+    build_response(file_parsed)
+  end
+
+  def parse_csv(file)
+    CSV.parse(file.read)
+  end
+
+  def encode_string(string)
+    string.force_encoding("ISO-8859-1").encode("UTF-8")
+  end
+
+  def build_response(parsed_file)
+    json_response = {}
+    parsed_file.each_with_index do |row, index|
+      json_response["row_#{index + 1}"] = encode_string(row.join(","))
+    end
+
+    json_response
+  end
+end

backend/config/application.rb

@@ -3,6 +3,7 @@
 require_relative "boot"
 
 require "rails/all"
+require "csv"
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.

backend/config/routes.rb

@@ -18,6 +18,7 @@
 
   namespace :api, defaults: { format: :json } do
     namespace :v1 do
+      post "/import", to: "handle_file#import"
       resources :users, only: %i[index create]
       resources :schools, only: %i[index]
     end

backend/spec/fixtures/files/valid_file.csv

@@ -0,0 +1,3 @@
+name,age
+Alice,30
+Bob,25

backend/spec/requests/api/v1/handle_file_spec.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "HandleFiles" do
+  describe "POST api/v1/import" do
+    context "when CSV file is valid" do
+      let(:csv_file) { fixture_file_upload(Rails.root.join("spec/fixtures/files/valid_file.csv"), "text/csv") }
+
+      it "returns status ok" do
+        post "/api/v1/import", params: { file: csv_file }
+        expect(response).to have_http_status(:ok)
+      end
+
+      it "returns the correct JSON response with file rows" do
+        post "/api/v1/import", params: { file: csv_file }
+        expect(response.parsed_body["file_rows"]).to be_a(Hash)
+      end
+    end
+
+    context "when CSV file is empty" do
+      let(:empty_csv_file) { fixture_file_upload(Rails.root.join("spec/fixtures/files/empty_file.csv"), "text/csv") }
+
+      it "returns status ok" do
+        post "/api/v1/import", params: { file: empty_csv_file }
+        expect(response).to have_http_status(:ok)
+      end
+
+      it "returns empty file rows in JSON" do
+        post "/api/v1/import", params: { file: empty_csv_file }
+        expect(response.parsed_body["file_rows"]).to be_empty
+      end
+    end
+
+    context "when file is not a CSV" do
+      let(:non_csv_file) { fixture_file_upload(Rails.root.join("spec/fixtures/files/non_csv_file.txt"), "text/csv") }
+
+      it "returns status ok" do
+        post "/api/v1/import", params: { file: non_csv_file }
+        expect(response).to have_http_status(:ok)
+      end
+
+      it "returns the correct JSON response with file rows" do
+        post "/api/v1/import", params: { file: non_csv_file }
+        expect(response.body).to include("file_rows")
+      end
+    end
+  end
+end

config/routes.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+require "sidekiq/web"
+
+Rails.application.routes.draw do
+  mount GraphiQL::Rails::Engine, at: "/graphiql", graphql_path: "/graphql" if Rails.env.development?
+  post "/graphql", to: "graphql#execute"
+  mount Sidekiq::Web => "/sidekiq"
+  mount Rswag::Ui::Engine => "/api-docs"
+  mount Rswag::Api::Engine => "/api-docs"
+  devise_for :users
+  # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
+
+  # Defines the root path route ("/")
+  # root "articles#index"
+
+  get "/public_method", to: "hello_world#public_method"
+  get "/private_method", to: "hello_world#private_method"
+  get "/search", to: "hello_world#search"
+
+  namespace :api, defaults: { format: :json } do
+    namespace :v1 do
+      get "/public_method", to: "hello_world#public_method"
+      get "/private_method", to: "hello_world#private_method"
+      post "/import", to: "handle_file#import"
+
+      resources :users, only: [:index]
+    end
+  end
+end