实践课程使用情况

app/services/subjects/course_used_info_service.rb

@@ -1,10 +1,8 @@
 class Subjects::CourseUsedInfoService < ApplicationService
-  attr_reader :subject, :user
-  def initialize(subject, user)
+  attr_reader :subject
+  def initialize(subject)
     @subject = subject
-    @user = user
-    @shixuns = subject.shixuns
-    @shixun_ids = @shixuns.pluck(:id)
+    @shixun_ids = subject.shixuns.pluck(:id)
   end
 
   def call

app/services/subjects/data_statistic_service.rb

@@ -1,8 +1,7 @@
 class Subjects::DataStatisticService < ApplicationService
-  attr_reader :subject, :user
-  def initialize(subject, user)
+  attr_reader :subject
+  def initialize(subject)
     @subject = subject
-    @user = user
     @shixuns = subject.shixuns
     @shixun_ids = @shixuns.pluck(:id)
   end

app/services/subjects/shixun_used_info_service.rb

@@ -0,0 +1,31 @@
+class Subjects::ShixunUsedInfoService < ApplicationService
+  attr_reader :subject, :stages
+  def initialize(subject)
+    @subject = subject
+    @stages = subject.stages.includes(shixuns: [myshixuns: :games, homework_commons_shixuns: [homework_common: :course]])
+  end
+
+  def call
+    shixun_infos = []
+    stages.each do |stage|
+      position = stage.position
+      stage.shixuns.each_with_index do |shixun, index|
+        stage = "#{position}-#{index+1}"
+        name = shixun.name
+        challenge_count = shixun.challenges_count
+        course_count = shixun.homework_commons_shixuns.select{|hcs| hcs.homework_common.course_id}.uniq.size
+        school_count = shixun.homework_commons_shixuns.select{|hcs| hcs.homework_common.course.school_id}.uniq.size
+        used_count = shixun.myshixuns_count
+        passed_count = shixun.myshixuns.select{|m| m.status == 1}.size
+        evaluate_count = shixun.myshixuns.map{|m| m.games.sum(:evaluate_count).to_i}.sum
+        passed_ave_time = (passed_count > 0) ?
+                              (shixun.myshixuns.map{|m| m.status == 1 && m.games.sum(:cost_time).to_i}.sum / passed_count) : 0
+        shixun_infos << {stage: stage, name: name, challenge_count: challenge_count, course_count: course_count,
+                         school_count: school_count, used_count: used_count, passed_count: passed_count,
+                         evaluate_count: evaluate_count, passed_ave_time: passed_ave_time}
+      end
+      shixun_infos
+    end
+  end
+
+end