From 0ea0188c3fe43a18cf4eeae52813cb3023ddf185 Mon Sep 17 00:00:00 2001
From: AnySiPlusplus <Denis1sorokin@gmail.com>
Date: Tue, 4 Jul 2023 14:39:35 +0300
Subject: [PATCH 1/3] added friend func

---
 app/controllers/api/v1/friends_controller.rb  |  20 +++
 app/interactors/api/v1/friends/add_friend.rb  |  48 +++++++
 app/interactors/api/v1/friends/index.rb       |  13 ++
 .../api/v1/friends/remove_friend.rb           |  25 ++++
 app/models/friend.rb                          |   6 +
 app/models/user.rb                            |   2 +
 app/models/user_friend.rb                     |   4 +
 app/policies/api/v1/friend_policy.rb          |   9 ++
 app/serializers/friend_serializer.rb          |   3 +
 config/routes.rb                              |   1 +
 db/migrate/20230630084051_create_friends.rb   |   9 ++
 .../20230704074345_create_user_friends.rb     |  10 ++
 db/schema.rb                                  |  21 ++-
 spec/factories/friends.rb                     |   5 +
 spec/factories/user_friends.rb                |   6 +
 .../api/v1/friends/add_friend_spec.rb         |  28 ++++
 spec/models/friend_spec.rb                    |   5 +
 spec/models/user_friend_spec.rb               |   6 +
 spec/requests/api/v1/friend_spec.rb           | 135 ++++++++++++++++++
 spec/support/api/schemas/friend_added.json    |  36 +++++
 spec/support/api/schemas/friend_index.json    |  39 +++++
 21 files changed, 430 insertions(+), 1 deletion(-)
 create mode 100644 app/controllers/api/v1/friends_controller.rb
 create mode 100644 app/interactors/api/v1/friends/add_friend.rb
 create mode 100644 app/interactors/api/v1/friends/index.rb
 create mode 100644 app/interactors/api/v1/friends/remove_friend.rb
 create mode 100644 app/models/friend.rb
 create mode 100644 app/models/user_friend.rb
 create mode 100644 app/policies/api/v1/friend_policy.rb
 create mode 100644 app/serializers/friend_serializer.rb
 create mode 100644 db/migrate/20230630084051_create_friends.rb
 create mode 100644 db/migrate/20230704074345_create_user_friends.rb
 create mode 100644 spec/factories/friends.rb
 create mode 100644 spec/factories/user_friends.rb
 create mode 100644 spec/interactors/api/v1/friends/add_friend_spec.rb
 create mode 100644 spec/models/friend_spec.rb
 create mode 100644 spec/models/user_friend_spec.rb
 create mode 100644 spec/requests/api/v1/friend_spec.rb
 create mode 100644 spec/support/api/schemas/friend_added.json
 create mode 100644 spec/support/api/schemas/friend_index.json

diff --git a/app/controllers/api/v1/friends_controller.rb b/app/controllers/api/v1/friends_controller.rb
new file mode 100644
index 0000000..eb5f4a7
--- /dev/null
+++ b/app/controllers/api/v1/friends_controller.rb
@@ -0,0 +1,20 @@
+module Api
+  module V1
+    class FriendsController < AuthentificateController
+      def index
+        result = Api::V1::Friends::Index.call(current_user:, serializer: FriendSerializer)
+        default_handler(result)
+      end
+
+      def create
+        result = Api::V1::Friends::AddFriend.call(params:, current_user:, serializer: FriendSerializer)
+        default_handler(result)
+      end
+
+      def destroy
+        result = Api::V1::Friends::RemoveFriend.call(params:, current_user:)
+        default_handler(result)
+      end
+    end
+  end
+end
diff --git a/app/interactors/api/v1/friends/add_friend.rb b/app/interactors/api/v1/friends/add_friend.rb
new file mode 100644
index 0000000..1492c74
--- /dev/null
+++ b/app/interactors/api/v1/friends/add_friend.rb
@@ -0,0 +1,48 @@
+module Api
+  module V1
+    module Friends
+      class AddFriend < BaseInteractor
+        def call
+          return not_found unless current_friend
+          return good_outcome if friend_excist?
+
+          current_form.save
+          result
+        end
+
+        private
+
+        def good_outcome
+          context.status = :ok
+          context.success_message = { friend: :already_added }
+        end
+
+        def friend_excist?
+          context.current_user.friends.each do |friend|
+            return true if friend.user == current_friend
+          end
+
+          false
+        end
+
+        def current_form
+          @current_form ||= UserFriend.new(user_id: context.current_user.id, friend_id: friend_form.id)
+        end
+
+        def current_friend
+          @current_friend ||= User.find_by(id: context.params[:user_id])
+        end
+
+        def friend_form
+          @friend_form ||= Friend.create(user_id: current_friend.id)
+        end
+
+        def result
+          context.form = current_form
+          context.status = :created
+          context.success_message = { friend: :added }
+        end
+      end
+    end
+  end
+end
diff --git a/app/interactors/api/v1/friends/index.rb b/app/interactors/api/v1/friends/index.rb
new file mode 100644
index 0000000..0c4bda5
--- /dev/null
+++ b/app/interactors/api/v1/friends/index.rb
@@ -0,0 +1,13 @@
+module Api
+  module V1
+    module Friends
+      class Index < BaseInteractor
+        def call
+          context.form = context.current_user.friends
+          context.status = :ok
+          context.success_message = { operation: :success }
+        end
+      end
+    end
+  end
+end
diff --git a/app/interactors/api/v1/friends/remove_friend.rb b/app/interactors/api/v1/friends/remove_friend.rb
new file mode 100644
index 0000000..50e517d
--- /dev/null
+++ b/app/interactors/api/v1/friends/remove_friend.rb
@@ -0,0 +1,25 @@
+module Api
+  module V1
+    module Friends
+      class RemoveFriend < BaseInteractor
+        def call
+          return not_found unless current_friend
+          return access_denied unless belong_to_user?(Api::V1::FriendPolicy, current_friend)
+
+          result
+        end
+
+        private
+
+        def current_friend
+          @current_friend ||= Friend.find_by(id: context.params[:id])
+        end
+
+        def result
+          context.status = :no_content
+          current_friend.destroy
+        end
+      end
+    end
+  end
+end
diff --git a/app/models/friend.rb b/app/models/friend.rb
new file mode 100644
index 0000000..3c8aa38
--- /dev/null
+++ b/app/models/friend.rb
@@ -0,0 +1,6 @@
+class Friend < ApplicationRecord
+  belongs_to :user
+
+  has_many :user_friends, dependent: :destroy
+  has_many :users, through: :user_friends
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index c92827a..6f4aa46 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -3,4 +3,6 @@ class User < ApplicationRecord
 
   has_many :messages, dependent: :destroy
   has_many :news, dependent: :destroy
+  has_many :user_friends, dependent: :destroy
+  has_many :friends, through: :user_friends
 end
diff --git a/app/models/user_friend.rb b/app/models/user_friend.rb
new file mode 100644
index 0000000..442ee2c
--- /dev/null
+++ b/app/models/user_friend.rb
@@ -0,0 +1,4 @@
+class UserFriend < ApplicationRecord
+  belongs_to :user
+  belongs_to :friend
+end
diff --git a/app/policies/api/v1/friend_policy.rb b/app/policies/api/v1/friend_policy.rb
new file mode 100644
index 0000000..288b604
--- /dev/null
+++ b/app/policies/api/v1/friend_policy.rb
@@ -0,0 +1,9 @@
+module Api
+  module V1
+    class FriendPolicy < ApplicationPolicy
+      def belong_to_user?
+        @subject.friends.include?(@model)
+      end
+    end
+  end
+end
diff --git a/app/serializers/friend_serializer.rb b/app/serializers/friend_serializer.rb
new file mode 100644
index 0000000..2addaac
--- /dev/null
+++ b/app/serializers/friend_serializer.rb
@@ -0,0 +1,3 @@
+class FriendSerializer < ApplicationSerializer
+  attributes :user_id, :created_at, :updated_at
+end
diff --git a/config/routes.rb b/config/routes.rb
index d9de39a..3c58565 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -10,6 +10,7 @@
       resources :messages
       resources :news
       resource :newsline, only: :show
+      resources :friends, except: %i[update show]
     end
   end
 end
diff --git a/db/migrate/20230630084051_create_friends.rb b/db/migrate/20230630084051_create_friends.rb
new file mode 100644
index 0000000..2ab60b1
--- /dev/null
+++ b/db/migrate/20230630084051_create_friends.rb
@@ -0,0 +1,9 @@
+class CreateFriends < ActiveRecord::Migration[7.0]
+  def change
+    create_table :friends do |t|
+      t.references :user, null: false, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20230704074345_create_user_friends.rb b/db/migrate/20230704074345_create_user_friends.rb
new file mode 100644
index 0000000..e020e63
--- /dev/null
+++ b/db/migrate/20230704074345_create_user_friends.rb
@@ -0,0 +1,10 @@
+class CreateUserFriends < ActiveRecord::Migration[7.0]
+  def change
+    create_table :user_friends do |t|
+      t.references :user, null: false, foreign_key: true
+      t.references :friend, null: false, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 6847d7b..19e3cf9 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,10 +10,17 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_06_26_101303) do
+ActiveRecord::Schema[7.0].define(version: 2023_07_04_074345) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "friends", force: :cascade do |t|
+    t.bigint "user_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["user_id"], name: "index_friends_on_user_id"
+  end
+
   create_table "messages", force: :cascade do |t|
     t.bigint "user_id", null: false
     t.text "text"
@@ -33,6 +40,15 @@
     t.index ["user_id"], name: "index_news_on_user_id"
   end
 
+  create_table "user_friends", force: :cascade do |t|
+    t.bigint "user_id", null: false
+    t.bigint "friend_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["friend_id"], name: "index_user_friends_on_friend_id"
+    t.index ["user_id"], name: "index_user_friends_on_user_id"
+  end
+
   create_table "users", force: :cascade do |t|
     t.string "login", null: false
     t.string "password_digest", null: false
@@ -40,6 +56,9 @@
     t.datetime "updated_at", null: false
   end
 
+  add_foreign_key "friends", "users"
   add_foreign_key "messages", "users"
   add_foreign_key "news", "users"
+  add_foreign_key "user_friends", "friends"
+  add_foreign_key "user_friends", "users"
 end
diff --git a/spec/factories/friends.rb b/spec/factories/friends.rb
new file mode 100644
index 0000000..1a7eca0
--- /dev/null
+++ b/spec/factories/friends.rb
@@ -0,0 +1,5 @@
+FactoryBot.define do
+  factory :friend do
+    user { create(:user) }
+  end
+end
diff --git a/spec/factories/user_friends.rb b/spec/factories/user_friends.rb
new file mode 100644
index 0000000..e3d745f
--- /dev/null
+++ b/spec/factories/user_friends.rb
@@ -0,0 +1,6 @@
+FactoryBot.define do
+  factory :user_friend do
+    user { create(:user) }
+    friend { create(:friend) }
+  end
+end
diff --git a/spec/interactors/api/v1/friends/add_friend_spec.rb b/spec/interactors/api/v1/friends/add_friend_spec.rb
new file mode 100644
index 0000000..5c566fa
--- /dev/null
+++ b/spec/interactors/api/v1/friends/add_friend_spec.rb
@@ -0,0 +1,28 @@
+RSpec.describe Api::V1::Friends::AddFriend do
+  subject(:result) { described_class.call(params:, current_user: user) }
+
+  let!(:user) { create(:user) }
+
+  describe 'Success' do
+    let!(:friend_user) { create(:user) }
+    let(:params) { { user_id: friend_user.id } }
+
+    it 'is create message' do
+      expect { result }.to change(Friend, :count).from(0).to(1)
+    end
+
+    it 'is result success' do
+      expect(result).to be_success
+    end
+  end
+
+  describe 'Wrong' do
+    context 'when not found user' do
+      let(:params) { { user_id: 0 } }
+
+      it 'is result not success' do
+        expect(result).not_to be_success
+      end
+    end
+  end
+end
diff --git a/spec/models/friend_spec.rb b/spec/models/friend_spec.rb
new file mode 100644
index 0000000..46990e9
--- /dev/null
+++ b/spec/models/friend_spec.rb
@@ -0,0 +1,5 @@
+RSpec.describe Friend, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:user) }
+  end
+end
diff --git a/spec/models/user_friend_spec.rb b/spec/models/user_friend_spec.rb
new file mode 100644
index 0000000..374f9d1
--- /dev/null
+++ b/spec/models/user_friend_spec.rb
@@ -0,0 +1,6 @@
+RSpec.describe UserFriend, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:user) }
+    it { is_expected.to belong_to(:friend) }
+  end
+end
diff --git a/spec/requests/api/v1/friend_spec.rb b/spec/requests/api/v1/friend_spec.rb
new file mode 100644
index 0000000..e428b40
--- /dev/null
+++ b/spec/requests/api/v1/friend_spec.rb
@@ -0,0 +1,135 @@
+require 'swagger_helper'
+
+RSpec.describe 'Friends', type: :request do
+  describe 'Friends' do
+    let!(:user) { create(:user) }
+    let(:Authorization) { "Bearer #{generate_token(user)}" }
+
+    path '/api/v1/friends' do
+      post 'Add friend' do
+        tags 'Friend'
+        produces 'application/json'
+        consumes 'application/json'
+        parameter name: :params, in: :body, schema: {
+          properties: {
+            user_id: { type: :string }
+          },
+
+          required: %w[user_id]
+        }
+
+        parameter({
+                    in: :header,
+                    type: :string,
+                    name: :Authorization,
+                    required: true,
+                    description: 'Client token'
+                  })
+
+        response '201', 'Friend added' do
+          let(:params) { { user_id: create(:user).id } }
+
+          run_test! do
+            expect(response).to match_json_schema('friend_added')
+          end
+        end
+
+        response '404', 'not found' do
+          let(:params) { { user_id: 0 } }
+
+          run_test! do
+            expect(response).to match_json_schema('not_found')
+          end
+        end
+
+        response '401', 'not aurhorized' do
+          let(:Authorization) { 'no token' }
+          let(:params) { 'params' }
+
+          run_test! do
+            expect(response).to match_json_schema('session_not_authorized')
+          end
+        end
+      end
+
+      get 'index friends' do
+        tags 'Friend'
+        produces 'application/json'
+        consumes 'application/json'
+
+        parameter({
+                    in: :header,
+                    type: :string,
+                    name: :Authorization,
+                    required: true,
+                    description: 'Client token'
+                  })
+
+        response '200', 'index friends' do
+          let(:friend) { create(:user_friend, user_id: user.id) }
+
+          run_test! do
+            expect(response).to match_json_schema('friend_index')
+          end
+        end
+
+        response '401', 'not aurhorized' do
+          let(:Authorization) { 'no token' }
+
+          run_test! do
+            expect(response).to match_json_schema('session_not_authorized')
+          end
+        end
+      end
+    end
+
+    path '/api/v1/friends/{id}' do
+      parameter({
+                  in: :header,
+                  type: :string,
+                  name: :Authorization,
+                  required: true,
+                  description: 'Client token'
+                })
+
+      delete 'remove friend' do
+        tags 'Friend'
+        consumes 'application/json'
+        produces 'application/json'
+        parameter name: :id, in: :path, type: :string
+
+        response '204', 'remove friend' do
+          let(:user_friend) { create(:user_friend, user_id: user.id) }
+          let(:id) { user_friend.friend.id }
+
+          run_test!
+        end
+
+        response '401', 'un authorized' do
+          let(:Authorization) { 'no token' }
+          let(:id) { 0 }
+
+          run_test! do
+            expect(response).to match_json_schema('session_not_authorized')
+          end
+        end
+
+        response '403', 'forbidden' do
+          let(:id) { create(:user_friend, user_id: create(:user).id).friend.id }
+
+          run_test! do
+            expect(response).to match_json_schema('user_forbidden')
+          end
+        end
+
+        response '404', 'not found' do
+          let(:id) { 0 }
+
+          run_test! do
+            expect(response).to match_json_schema('not_found')
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/spec/support/api/schemas/friend_added.json b/spec/support/api/schemas/friend_added.json
new file mode 100644
index 0000000..e6f4812
--- /dev/null
+++ b/spec/support/api/schemas/friend_added.json
@@ -0,0 +1,36 @@
+{
+  "type": "array",
+  "items": {
+    "type": "object",
+    "required": [],
+    "properties": {
+      "data": {
+        "type": "object",
+        "required": [],
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "type": {
+            "type": "string"
+          },
+          "attributes": {
+            "type": "object",
+            "required": [],
+            "properties": {
+              "title": {
+                "type": "string"
+              },
+              "created_at": {
+                "type": "string"
+              },
+              "updated_at": {
+                "type": "string"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/spec/support/api/schemas/friend_index.json b/spec/support/api/schemas/friend_index.json
new file mode 100644
index 0000000..8e82408
--- /dev/null
+++ b/spec/support/api/schemas/friend_index.json
@@ -0,0 +1,39 @@
+{
+  "type": "array",
+  "items": {
+    "type": "object",
+    "required": [],
+    "properties": {
+      "data": {
+        "type": "array",
+        "items": {
+          "type": "object",
+          "required": [],
+          "properties": {
+            "id": {
+              "type": "string"
+            },
+            "type": {
+              "type": "string"
+            },
+            "attributes": {
+              "type": "object",
+              "required": [],
+              "properties": {
+                "title": {
+                  "type": "string"
+                },
+                "created_at": {
+                  "type": "string"
+                },
+                "updated_at": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}

From 5fcb41a70837f8333c4c531992f6b3949bc4a7e7 Mon Sep 17 00:00:00 2001
From: AnySiPlusplus <Denis1sorokin@gmail.com>
Date: Mon, 10 Jul 2023 11:07:12 +0300
Subject: [PATCH 2/3] readme.md

---
 README.md | 27 +++++----------------------
 1 file changed, 5 insertions(+), 22 deletions(-)

diff --git a/README.md b/README.md
index 7db80e4..56fb14d 100644
--- a/README.md
+++ b/README.md
@@ -1,24 +1,7 @@
-# README
+##### Prerequisites
 
-This README would normally document whatever steps are necessary to get the
-application up and running.
+The setups steps expect following tools installed on the system.
 
-Things you may want to cover:
-
-* Ruby version
-
-* System dependencies
-
-* Configuration
-
-* Database creation
-
-* Database initialization
-
-* How to run the test suite
-
-* Services (job queues, cache servers, search engines, etc.)
-
-* Deployment instructions
-
-* ...
+- Github
+- Ruby [3.2.2](https://github.com/organization/project-name/blob/master/.ruby-version#L1)
+- Rails [7.0.5](https://github.com/organization/project-name/blob/master/Gemfile#L12)

From 971b84264ac257e169dca962c2ac374ecaa4bab0 Mon Sep 17 00:00:00 2001
From: Denys <Denis1sorokin@gmail.com>
Date: Mon, 10 Jul 2023 11:08:22 +0300
Subject: [PATCH 3/3] Update README.md

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 56fb14d..b37b508 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,9 @@ The setups steps expect following tools installed on the system.
 - Github
 - Ruby [3.2.2](https://github.com/organization/project-name/blob/master/.ruby-version#L1)
 - Rails [7.0.5](https://github.com/organization/project-name/blob/master/Gemfile#L12)
+
+##### 1. Check out the repository
+
+```bash
+git clone git@github.com:organization/project-name.git
+```