init project

app/libs/util.rb

@@ -0,0 +1,83 @@
+require 'open-uri'
+
+module Util
+  module_function
+
+  def days_between(time, other_time)
+    raise ArgumentError if time.blank? || other_time.blank?
+    Date.parse(time.to_s) - Date.parse(other_time.to_s)
+  end
+
+  def convert_base64_image(str, **opts)
+    return if str.blank?
+
+    Base64ImageConverter.new(**opts).convert(str)
+  end
+
+  def write_file(io, path)
+    dir = File.dirname(path)
+    FileUtils.mkdir_p(dir) unless File.directory?(dir)
+
+    Rails.logger.info("### save file #{path}, size: #{io.size} ~")
+    File.open(path, 'wb') do |file|
+      if io.respond_to?(:read)
+        io.rewind
+        while buffer = io.read(8192)
+          file.write(buffer)
+        end
+      else
+        file.write(io)
+      end
+    end
+  end
+
+  def download_file(url, save_path)
+    data = open(url, &:read)
+    file = File.new(save_path, 'w+')
+    file.binmode
+    file << data
+    file.flush
+    file.close
+    file
+  end
+
+  def logger_error(exception)
+    Rails.logger.error(exception.message)
+    exception.backtrace.each { |message| Rails.logger.error(message) }
+  end
+
+  def map_or_pluck(relation, name)
+    relation.is_a?(Array) || relation.loaded? ? relation.map(&name.to_sym) : relation.pluck(name)
+  end
+
+  def extract_content(str)
+    return '' if str.blank?
+    str.gsub(/<\/?.*?>/, '').gsub(/[\n\t\r]/, '').gsub(/&nbsp;/, '')
+  end
+
+  def conceal(str, type = nil)
+    str = str.to_s
+    return if str.blank?
+
+    case type
+    when :phone then "#{str[0..2]}****#{str[-4..-1]}"
+    when :email then "#{str[0]}***#{str[(str.rindex('@')-1)..-1]}"
+    else "#{str[0..2]}***#{str[-3..-1]}"
+    end
+  end
+
+  def display_cost_time(time)
+    time = time.to_i
+    return  if time.zero? || time < 60
+
+    day = time / (24 * 60 * 60)
+    hour = (time % (24 * 60 * 60)) / (60 * 60)
+    minute = (time % (60 * 60)) / 60
+
+    str = ''
+    str += "#{day}天" unless day.zero?
+    str += "#{hour}小时" unless hour.zero?
+    str += "#{minute}分" unless minute.zero?
+    str
+  end
+end