refactoring code

app/services/crawl_data.rb

@@ -7,6 +7,7 @@ class CrawlData
   def crawl_web
     page = Nokogiri::HTML.parse(open(Settings.crawl.base_url, ssl_verify_mode: nil))
     total_job = page.css("div.ais-stats h1.col-sm-10 span").text.gsub(",", "").to_f
+    return if total_job == 0
     total_page = (total_job / Settings.crawl.jobs_per_page).floor
     crawl_job_title_logger = ActiveSupport::Logger.new("log/crawl_data.log")
     crawl_job_title_logger.info "Crawl at #{Time.current}"
@@ -18,31 +19,31 @@ class CrawlData
 
         job_page = Nokogiri::HTML.parse(open(URI.encode(job_url)))
 
-        # Job code
-        job_code = job_url.split("/").last.split(".")[-2]
+        job = JobHtml.new(job_page).parse_job
 
-        # Company code
-        company_code = job_url.split("/").last.split("-").last.split(".")[-2].strip
+        next if job_page.css(".LeftJobCB").nil? || job[:workplace].blank?
 
-        next if job_page.css(".LeftJobCB").nil?
+        # Job code
+        job_code = job_url.split("/").last.split(".")[-2] || ""
 
-        job = JobHtml.new(job_page).parse_job
+        # Company code
+        company_code = job_page.css(".viewmorejob a @href").present? ?
+                       job_page.css(".viewmorejob a @href").text.split("/").last.split("-")[-2].strip : ""
 
         crawl_job_title_logger.info "#{job[:title]}"
 
-        next if job[:workplace].nil?
-
         job[:workplace].each do |city_name|
-          city_id = city_id(city_name)
-          company_id = company_id(company_code, job[:company_name], job[:company_address], job[:company_description])
-          job_id = job_id(job_code, job[:title], job[:salary],
+          city_id = get_city(city_name).id
+          company_id = get_company(company_code, job[:company_name], job[:company_address], job[:company_description]).id
+          job_id = get_job(job_code, job[:title], job[:salary],
                           job[:description], job[:requirement],
                           job[:level], job[:post_date],
-                          job[:expiration_date], company_id)
+                          job[:expiration_date], company_id).id
           CityJob.find_or_create_by!(job_id: job_id, city_id: city_id)
 
           job[:industries].each do |job_industry|
-            industry_id = industry_id(job_industry.strip)
+            job_industry = job_industry.strip
+            industry_id = get_industry(job_industry).id
             IndustryJob.find_or_create_by!(industry_id: industry_id, job_id: job_id)
           end
         end
@@ -50,28 +51,25 @@ class CrawlData
     end
   end
 
-  def company_id(code, name, address, description)
+  def get_company(code, name, address, description)
     company = Company.find_or_initialize_by(code: code)
     company.update(name: name, address: address, description: description)
-    company.id
+    company
   end
 
-  def industry_id(name)
+  def get_industry(name)
     industry = Industry.find_or_create_by!(name: name)
-    industry.id
+    industry
   end
 
-  def city_id(name)
+  def get_city(name)
     name = name.strip
-    City.find_or_create_by(name: name, region: "Việt Nam").id
+    City.find_or_create_by(name: name, region: "Việt Nam")
   end
 
-  def job_id(code = nil, title, salary, description, requirement, level, post_date, expiration_date, company_id)
-    if expiration_date.nil?
-      job = Job.find_or_initialize_by(title: job_title, company_id: company_id)
-    else
-      job = Job.find_or_initialize_by(code: code)
-    end
+  def get_job(code = nil, title, salary, description, requirement, level, post_date, expiration_date, company_id)
+    attrs = expiration_date.nil? ? {title: job_title, company_id: company_id} : {code: code}
+    job = Job.find_or_initialize_by attrs
 
     job.update(code: code,
                title: title,
@@ -82,6 +80,6 @@ class CrawlData
                expiration_date: expiration_date,
                level: level,
                company_id: company_id)
-    job.id
+    job
   end
 end

app/services/job_html.rb

@@ -6,61 +6,67 @@ class JobHtml
   def parse_job
     get_job_info
     get_job_detail
-    job = { title: get_title,
-            salary: @job_salary,
-            level: @job_level,
+    { title: get_title,
+      salary: get_job_info[:salary],
+      level: get_job_info[:level],
       post_date: get_post_date,
-            description: @job_description,
-            requirement: @job_requirement,
-            expiration_date: @job_expiration_date,
-            workplace: @job_workplace,
-            level: @job_level,
-            industries: @job_industries,
+      description: get_job_detail[:description],
+      requirement: get_job_detail[:requirement],
+      expiration_date: get_job_info[:expiration_date],
+      workplace: get_job_info[:workplace],
+      industries: get_job_info[:industries],
       company_name: get_company_name,
       company_address: get_company_address,
       company_description: get_company_description }
-    return job
   end
 
+  private
+
   def get_title
-    @job_title = @html_data.css(".top-job-info h1").text.strip
+    @html_data.css(".top-job-info h1").text.strip
   end
 
   def get_post_date
-    @job_post_date = @html_data.css(".datepost span").text
+    @html_data.css(".datepost span").text
   end
 
   def get_job_info
     info_container = @html_data.css(".DetailJobNew li p")
+    job_info = {}
 
-    job_info = (0..info_container.count - 1).map do |info_part|
+    (0..info_container.count - 1).each do |info_part|
       info = info_container[info_part].text
       case
       when info.include?("Nơi làm việc")
-        @job_workplace = info.gsub("/[\r\n]+/", "").partition(":").last.split(",")
+        job_info[:workplace] = info.gsub("/[\r\n]+/", "").partition(":").last.split(",") || []
       when info.include?("Lương")
-        @job_salary = info.gsub("/[\r\n]+/", "").partition(":").last.strip
+        job_info[:salary] = info.gsub("/[\r\n]+/", "").partition(":").last.strip
       when info.include?("Cấp bậc")
-        @job_level = info.gsub("/[\r\n]+/", "").partition(":").last.strip
+        job_info[:level] = info.gsub("/[\r\n]+/", "").partition(":").last.strip
       when info.include?("Hết hạn nộp")
-        @job_expiration_date = info.gsub("/[\r\n]+/", "").partition(":").last.strip
+        job_info[:expiration_date] = info.gsub("/[\r\n]+/", "").partition(":").last.strip
       when info.include?("Ngành nghề")
-        @job_industries = info.gsub("/[\r\n]+/", "").partition(":").last.split(",")
+        job_info[:industries] = info.gsub("/[\r\n]+/", "").partition(":").last.split(",")
       end
     end
+
+    return job_info
   end
 
   def get_job_detail
     detail_container = @html_data.css("div.MarBot20")
+    job_detail = {}
 
-    job_detail = (0..detail_container.count - 1).map do |detail_part|
+    (0..detail_container.count - 1).map do |detail_part|
       detail = detail_container[detail_part].text
       if detail.include?("Mô tả Công việc")
-        @job_description = detail.partition("Mô tả Công việc").last
+        job_detail[:description] = detail.partition("Mô tả Công việc").last
       elsif detail.include?("Yêu Cầu Công Việc")
-        @job_requirement = detail.partition("Yêu Cầu Công Việc").last
+        job_detail[:requirement] = detail.partition("Yêu Cầu Công Việc").last
       end
     end
+
+    return job_detail
   end
 
   def get_company_name