WIP part 2

Now I see headers for the CSV, but no data for the hours report is being rendered to the CSV.

app/mailers/learning_hours_mailer.rb

@@ -1,11 +1,29 @@
 class LearningHoursMailer < ApplicationMailer
-  def learning_hours_report_email(user, casa_org, csv_data)
+
+  def learning_hours_report_email(user)
     @user = user
-    @casa_org = casa_org
-    attachments['learning_hours_report.csv'] = csv_data
+
+    # Ensure user is provided
+    if @user.nil?
+      Bugsnag.notify("No user provided for LearningHoursMailer#learning_hours_report_email")
+      return
+    end
+
+    @casa_org = user.casa_org
+
+    # Generate the learning hours CSV for the current month
+    start_date = Date.today.beginning_of_month
+    end_date = Date.today.end_of_month
+    learning_hours = LearningHour.where(user_id: @user.id, occurred_at: start_date..end_date)
+    csv_data = LearningHoursExportCsvService.new(learning_hours).perform
+
+    attachments["learning-hours-report-#{Date.today}.csv"] = csv_data
+
     mail(to: @user.email, subject: "Learning Hours Report - #{last_day_of_month.strftime('%Y-%m-%d')}")
   end
 
+  private
+
   def last_day_of_month
     Date.today.end_of_month
   end

lib/mailers/previews/learning_hours_mailer_preview.rb

@@ -6,7 +6,7 @@ def learning_hours_report_email
     if user.nil?
       DebugPreviewMailer.invalid_user("user")
     else
-      LearningHoursMailer.learning_hours_report_email(user, @casa_org, @csv_data)
+      LearningHoursMailer.learning_hours_report_email(user)
     end
   end
 end