Fix same merge quest 1

lib/import/csv_reader.rb

@@ -18,30 +18,23 @@ class Import::CSVReader
       Thread.new do
         begin
           begin
-            # Area information
-            Area.new(name: 'Viet Nam').save if Area.where(name: 'Viet Nam').blank?
-            Area.new(name: 'International').save if Area.where(name: 'International').blank?
-
             csv_text = File.read(@file)
             csv = CSV.parse(csv_text, headers: :true)
             csv.each do |row|
               # Job type information
               job_type_name = row['type'].strip unless row['type'].nil?
-
-              job_type = JobType.new
-              job_type.name = job_type_name
-              job_type.save if JobType.find_by_name(job_type_name).blank?
+              job_type = JobType.find_or_create_by(name: job_type_name)
 
               # Contact information
               contact_name = row['contact name'].strip unless row['contact name'].nil?
               contact_email = row['contact email'].strip unless row['contact email'].nil?
               contact_phone = row['contact phone'].strip unless row['contact phone'].nil?
 
-              contact = Contact.new
+              contact = Contact.find_or_create_by(email: contact_email)
               contact.email = contact_email
               contact.name = contact_name
               contact.phone = contact_phone
-              contact.save if Contact.find_by_email(contact_email).blank?
+              contact.save
 
               # Company information
               company_address = row['company address'].strip unless row['company address'].nil?
@@ -49,27 +42,28 @@ class Import::CSVReader
               company_name = row['company name'].strip unless row['company name'].nil?
               company_province = row['company province'].strip unless row['company province'].nil?
 
-              company = Company.new
+              company = Company.find_or_create_by(name: company_name)
               company.address = company_address
               company.district = company_district
               company.name = company_name
               company.province = company_province
-              company.save if Company.find_by_name(company_name).blank?
+              company.save
 
               # Category information
               category_name = row['category'].strip unless row['category'].nil?
 
-              category = Category.new
+              category = Category.find_or_create_by(name: category_name)
               category.name = category_name
-              category.save if Category.find_by_name(category_name).blank?
+              category.save
 
               # City information
               city_name = row['work place'].strip unless row['work place'].nil?
+              city_name = city_name.tr('""', '').tr('[]', '') # Remove '["text"]' -> 'text'
 
-              city = City.new
+              city = City.find_or_create_by(name: city_name)
               city.name = city_name
-              city.area = Area.find(1)
-              city.save if City.find_by_name(city_name).blank?
+              city.area = Area.find_by_name('Viet Nam')
+              city.save
 
               # Job information
               job_benefit = row['benefit'].strip unless row['benefit'].nil?
@@ -79,7 +73,7 @@ class Import::CSVReader
               job_requirement = row['requirement'].strip unless row['requirement'].nil?
               job_salary = row['salary'].strip unless row['salary'].nil?
 
-              job = Job.new
+              job = Job.find_or_create_by(name: job_name, city: city, company: company)
               job.benefit = job_benefit
               job.description = job_description
               job.level = job_level
@@ -90,13 +84,13 @@ class Import::CSVReader
               job.job_type = job_type
               job.contact = contact
               job.company = company
-              job.save if Job.where(name: job_name, city: city, company: company).blank?
+              job.save
 
               # Job Category Information
-              job_category = JobCategory.new
+              job_category = JobCategory.find_or_create_by(job: job, category: category)
               job_category.job = job
               job_category.category = category
-              job_category.save if JobCategory.where(job: job, category: category).blank?
+              job_category.save
             end
           rescue StandardError => e
             logger.error(e.message)