Mihail Sokurenko-0

Mihail Sokurenko/0/hw0.rb

@@ -0,0 +1,148 @@
+require 'roo'
+require 'roo-xls'
+
+class Price
+  def initialize
+    @c = Roo::Excelx.new('./date/Average_prices(serv)-10-2018.xlsx')
+    puts 'What price are u looking for?'
+    @name = gets.chomp
+    @pr = 0
+    @all = []
+    @date = { 'январь': '01', 'февраль': '02', 'март': '03', 'апрель': '04',
+             'май': '05', 'июнь': '06', 'июль': '07', 'август': '08',
+             'сентябрь': '09', 'октябрь': '10', 'ноябрь': '11',
+             'декабрь': '12'}
+  end
+
+  def find
+    @k = 0
+    @l = 0
+    @c.each_with_index do |mas, i|
+      mas.each_with_index do |arr, j|
+        if mas[0] != nil && mas[0] == @name.upcase || mas[0] =~ /#{@name.upcase}[.,) ]{1}/
+          @l = i + 1
+        end
+        if arr == 'г. Минск'
+          @k = j
+        end
+        @pr = @c.row(@l)[@k]
+      end
+    end
+    out()
+  end
+
+  def min
+  	min = @pr
+    all_files
+    @all.each do |f|
+      if !f.nil?
+        dat = get_date(f)
+        old_price(f) ? coef = 0.0001 : coef = 1
+        f.each_with_index do |_, i|
+          if f.row(i)[0] == @name.upcase || f.row(i)[0] =~ /#{@name.upcase}[.,) ]{1}/ 
+            if !f.row(i)[@k].nil? && (coef * f.row(i)[@k]) < min 
+              min=coef * f.row(i)[@k]
+              @min_dat = dat
+            end
+          end
+        end
+      end
+    end 
+    min_out(min, @min_dat)
+  end
+
+  def max
+    max = @pr
+    all_files
+    @all.each do |f|
+      if !f.nil?
+        dat = get_date(f)
+        old_price(f) ? coef = 0.0001 : coef = 1
+        f.each_with_index do |_, i|
+          if f.row(i)[0] == @name.upcase || f.row(i)[0] =~ /#{@name.upcase}[.,) ]{1}/ 
+            if !f.row(i)[@k].nil? && (coef * f.row(i)[@k]) > max 
+              max=coef * f.row(i)[@k]
+              @max_dat = dat
+            end
+          end
+        end
+      end
+    end 
+    max_out(max, @max_dat)
+  end
+
+  def similar
+    a = []
+    @c.each do |mas|
+      mas.each do |arr|
+        if arr == @pr && mas[0] !~ /#{@name.upcase}[.,) ]{1}/ && mas[0] != @name.upcase && !arr.nil?
+          a << mas[0]
+        end
+      end
+    end
+    a = a.uniq
+    similar_out(a)
+  end
+
+  def get_date(file)
+    dates = file.row(3)[0].split(' ')
+    @date.each do |d, t|
+      if dates[1] == d.to_s
+        dates[1] = t
+      end
+    end
+    dates[1..2]
+  end
+
+  def old_price(file)
+    date = get_date(file)
+    if date[1].to_i < 2017
+      true
+    end
+  end
+
+  def all_files
+    Dir.foreach('./date').each do |file|
+      case File.extname(file)
+      when '.xlsx' then 
+        @all << Roo::Excelx.new("./date/#{file}")
+      when '.xls' then
+        @all << Roo::Excel.new("./date/#{file}")
+      end
+    end
+    @all
+  end
+
+  def out()
+    if @pr.nil? && @l.zero?
+      puts "No #{@name} in table"
+    else
+      puts"'#{@name.capitalize}' is #{@pr} BYN in Minsk in these days"
+      min()
+      max()
+      similar()
+    end
+  end
+
+  def min_out(min_v, min_dat)
+    puts"Lowest price was on #{min_dat[0]}/#{min_dat[1]} at #{min_v} BYN"
+  end
+
+  def max_out(max_v, max_dat)
+    puts"Highest price was on #{max_dat[0]}/#{max_dat[1]} at #{max_v} BYN"
+  end
+
+  def similar_out(a)
+    if a.empty?
+      puts"No product with similar price"
+    else 
+      str = a.map{|r| "#{r.capitalize.gsub(/\s+/, " ").gsub(/\n/, " ")}"}.join(', ') 
+      puts "For similar price u can buy #{str}" 
+    end
+  end
+
+end
+
+s = Price.new
+s.find
+