private message feature apis

app/controllers/concerns/paginate_helper.rb

@@ -1,7 +1,7 @@
 module PaginateHelper
   def paginate(objs, **opts)
     page     = params[:page].to_i <= 0 ? 1 : params[:page].to_i
-    per_page = params[:per_page].to_i > 0 ? params[:per_page].to_i : opts[:per_page] || 20
+    per_page = params[:per_page].to_i > 0 && params[:per_page].to_i < 50 ? params[:per_page].to_i : opts[:per_page] || 20
 
     Kaminari.paginate_array(objs).page(page).per(per_page)
   end

app/controllers/users/base_controller.rb

@@ -26,9 +26,22 @@ class Users::BaseController < ApplicationController
     render_forbidden
   end
 
+  def page_value
+    params[:page].to_i <= 0 ? 1 : params[:page].to_i
+  end
+
+  def per_page_value
+    params[:per_page].to_i > 0 && params[:per_page].to_i < 50 ? params[:per_page].to_i : 20
+  end
+  alias_method :limit_value, :per_page_value
+
+  def offset_value
+    (page_value - 1) * limit_value
+  end
+
   def paginate(objs, **opts)
-    page     = params[:page].to_i <= 0 ? 1 : params[:page].to_i
-    per_page = params[:per_page].to_i > 0 ? params[:per_page].to_i : 20
+    page     = page_value
+    per_page = per_page_value
 
     return Kaminari.paginate_array(objs).page(page).per(per_page) unless observed_logged_user? && opts[:special]
 

app/controllers/users/private_message_details_controller.rb

@@ -0,0 +1,23 @@
+class Users::PrivateMessageDetailsController < Users::BaseController
+  before_action :private_user_resources!
+
+  after_action :update_message_status, only: [:show]
+
+  def show
+    messages = observed_user.private_messages.without_deleted.where(target: target_user)
+
+    @count    = messages.count
+    @messages = messages.order(send_time: :asc).includes(sender: :user_extension)
+  end
+
+  private
+
+  def target_user
+    @_target_user ||= User.find(params[:target_id])
+  end
+
+  # 置为已读
+  def update_message_status
+    observed_user.private_messages.only_unread.where(target: target_user).update_all(status: 1)
+  end
+end

app/controllers/users/private_messages_controller.rb

@@ -0,0 +1,39 @@
+class Users::PrivateMessagesController < Users::BaseController
+  before_action :private_user_resources!
+  after_action :update_onclick_time!, only: [:index]
+
+  def index
+    @count = observed_user.private_messages.without_deleted.group(:target_id).count.count
+
+    subquery = observed_user.private_messages.without_deleted.order(send_time: :desc).to_sql
+    query = "SELECT subquery.*, COUNT(*) message_count FROM (#{subquery}) subquery "\
+            "GROUP BY subquery.target_id ORDER BY subquery.send_time desc LIMIT #{limit_value} OFFSET #{offset_value}"
+    @messages = PrivateMessage.select('*').from("(#{query}) AS query").includes(target: :user_extension)
+  end
+
+  def create
+    receiver = User.find_by(id: params[:target_id])
+    return render_error('用户未找到') if receiver.blank?
+
+    @message = PrivateMessages::CreateService.call(observed_user, receiver, create_params)
+  rescue PrivateMessages::CreateService::Error => ex
+    render_error(ex.message)
+  end
+
+  def destroy
+    message = observed_user.private_messages.without_deleted.find(params[:id])
+    message.destroy!
+
+    render_ok
+  end
+
+  private
+
+  def update_onclick_time!
+    current_user.onclick_time.touch(:onclick_time)
+  end
+
+  def create_params
+    params.permit(:content)
+  end
+end

app/controllers/users/recent_contacts_controller.rb

@@ -0,0 +1,8 @@
+class Users::RecentContactsController < Users::BaseController
+  before_action :private_user_resources!
+
+  def index
+    contacts  = observed_user.recent_contacts.distinct
+    @contacts = contacts.order('private_messages.created_at DESC').limit(10).includes(:user_extension)
+  end
+end

app/controllers/users/unread_message_infos_controller.rb

@@ -0,0 +1,12 @@
+class Users::UnreadMessageInfosController < Users::BaseController
+  before_action :private_user_resources!
+
+  def show
+    click_time = observed_user.click_time
+
+    unread_tiding_count  = observed_user.tidings.where('created_at > ?', click_time).count
+    unread_message_count = observed_user.private_messages.only_unread.group(:target_id).count.count
+
+    render_ok(unread_tiding_count: unread_tiding_count, unread_message_count: unread_message_count)
+  end
+end

app/controllers/users_for_private_messages_controller.rb

@@ -0,0 +1,17 @@
+class UsersForPrivateMessagesController < ApplicationController
+  before_action :require_login, :check_auth
+
+  def index
+    users = User.active.where.not(id: current_user.id)
+
+    keyword = params[:keyword].to_s.strip
+    if keyword.blank?
+      @users = []
+      return
+    end
+
+    users = users.where('LOWER(concat(lastname, firstname, nickname)) LIKE ?', "%#{keyword}%")
+
+    @users = users.limit(10).includes(:user_extension)
+  end
+end

app/decorators/private_message_decorator.rb

@@ -0,0 +1,9 @@
+module PrivateMessageDecorator
+  extend ApplicationDecorator
+
+  display_time_method :send_time
+
+  def unread?
+    status.zero?
+  end
+end

app/models/private_message.rb

@@ -1,3 +1,9 @@
 class PrivateMessage < ApplicationRecord
   belongs_to :user
+  belongs_to :target, class_name: "User"
+  belongs_to :sender, class_name: "User"
+  belongs_to :receiver, class_name: "User"
+
+  scope :without_deleted, -> { where.not(status: 2) }
+  scope :only_unread, -> { where(status: 0) }
 end

app/models/user.rb

@@ -54,7 +54,8 @@ class User < ApplicationRecord
   has_one :onclick_time, :dependent => :destroy
 
   # 新版私信
-  has_many :private_messages, :dependent => :destroy
+  has_many :private_messages, dependent: :destroy
+  has_many :recent_contacts, through: :private_messages, source: :target
   has_many :tidings, :dependent => :destroy
 
   has_many :games, :dependent => :destroy

app/services/private_messages/create_service.rb

@@ -0,0 +1,35 @@
+class PrivateMessages::CreateService < ApplicationService
+  Error = Class.new(StandardError)
+
+  attr_reader :sender, :receiver, :params
+
+  def initialize(sender, receiver, **params)
+    @sender   = sender
+    @receiver = receiver
+    @params   = params
+  end
+
+  def call
+    validate!
+
+    same_attr = { sender: sender, receiver: receiver, content: content, send_time: Time.now }
+
+    message = nil
+    ActiveRecord::Base.transaction do
+      message = sender.private_messages.create!(same_attr.merge(target: receiver, status: 1))
+      receiver.private_messages.create!(same_attr.merge(target: sender, status: 0))
+    end
+    message
+  end
+
+  private
+
+  def content
+    @_content ||= params[:content].to_s.strip
+  end
+
+  def validate!
+    raise Error, '内容不能为空' if content.blank?
+    raise Error, '内容太长' if content.size > 255
+  end
+end

app/views/users/private_message_details/show.json.jbuilder

@@ -0,0 +1,11 @@
+json.count @count
+json.messages do
+  json.array! @messages.each do |message|
+    json.extract! message, :id, :user_id, :receiver_id, :sender_id, :content
+
+    json.send_time message.display_send_time
+    json.sender do
+      json.partial! 'users/user_simple', user: message.sender
+    end
+  end
+end

app/views/users/private_messages/create.json.jbuilder

@@ -0,0 +1,10 @@
+json.status 0
+json.message 'success'
+json.private_message do
+  json.extract! @message, :id, :user_id, :receiver_id, :sender_id, :content
+
+  json.send_time @message.display_send_time
+  json.sender do
+    json.partial! 'users/user_simple', user: @message.sender
+  end
+end

app/views/users/private_messages/index.json.jbuilder

@@ -0,0 +1,13 @@
+json.count @count
+json.private_messages do
+  json.array! @messages.each do |message|
+    json.extract! message, :id, :content, :message_count
+
+    json.unread message.unread?
+    json.send_time message.display_send_time
+
+    json.target do
+      json.partial! 'users/user_simple', user: message.target
+    end
+  end
+end

app/views/users/recent_contacts/index.json.jbuilder

@@ -0,0 +1,2 @@
+json.users @contacts, partial: 'users/user_simple', as: :user
+json.count @contacts.size

app/views/users_for_private_messages/index.json.jbuilder

@@ -0,0 +1,2 @@
+json.users @users, partial: 'users/user_simple', as: :user
+json.count @users.size

config/routes.rb

@@ -53,6 +53,11 @@ Rails.application.routes.draw do
         resource :grade_records, only: [:show]
         resource :watch, only: [:create, :destroy]
         resources :project_packages, only: [:index]
+        # 私信
+        resources :private_messages, only: [:index, :create, :destroy]
+        resources :recent_contacts, only: [:index]
+        resource :private_message_details, only: [:show]
+        resource :unread_message_info, only: [:show]
       end
 
 
@@ -91,6 +96,7 @@ Rails.application.routes.draw do
         end
       end
     end
+    resources :users_for_private_messages, only: [:index]
 
     resources :myshixuns, param: :identifier, shallow: true do
       member do