187384622/new email model - PR2 - Add Email Address Data Migration Script

lib/tasks/migrate_email_addresses.rake

@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+namespace :email_address_migration do
+  desc "Migrate emails from Teacher to EmailAddress model (no deletion of emails from Teacher model), with comprehensive logging"
+  task migrate_email_addresses: :environment do
+    total_emails = 0
+    migrated_emails = 0
+    failed_emails = []
+    skipped_emails = 0
+
+    Teacher.find_each do |teacher|
+      puts "[INFO] Processing Teacher ID: #{teacher.id}, Name: #{teacher.first_name} #{teacher.last_name}"
+      emails = [teacher.email, teacher.personal_email].compact
+
+      if emails.empty?
+        puts "[WARN] Skipping Teacher ID: #{teacher.id} - No emails to process."
+        skipped_emails += 1
+        next
+      end
+
+      emails.each do |email|
+        if email.blank?
+          puts "[WARN] Blank email found for Teacher ID: #{teacher.id}, skipping this entry."
+          skipped_emails += 1
+          next
+        end
+
+        total_emails += 1
+        email_record = EmailAddress.new(teacher_id: teacher.id, email:, primary: (email == teacher.email))
+
+        if email_record.save
+          migrated_emails += 1
+          puts "[INFO] Successfully migrated email #{email} for Teacher ID: #{teacher.id}"
+        else
+          puts "[ERROR] Failed to migrate email #{email} for Teacher ID: #{teacher.id}: #{email_record.errors.full_messages.join(", ")}"
+          failed_emails << { email: email, errors: email_record.errors.full_messages }
+          # Explicit log to indicate the failed email remains with the Teacher model
+          puts "[INFO] Failed email #{email} remains at Teacher model and has not been removed due to migration errors."
+        end
+      end
+    end
+
+    puts "[INFO] Migration summary: Total emails processed: #{total_emails}, Migrated: #{migrated_emails}, Failed: #{failed_emails.size}, Skipped: #{skipped_emails}"
+    if failed_emails.any?
+      puts "[INFO] Detailed failed migrations:"
+      failed_emails.each do |fail|
+        puts "[ERROR] Failed email: #{fail[:email]}, Errors: #{fail[:errors].join(", ")}"
+      end
+    end
+  end
+end