Mihail Sokurenko-0

Mihail Sokurenko/0/hw0.rb

@@ -0,0 +1,156 @@
+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
+  end
+
+  def find
+    @k = 0
+    @l = 0
+    @c.each_with_index do |mas, i|
+      mas.each_with_index do |arr, j|
+        (@l = i + 1) if check(mas)
+        (@k = j) if arr == 'г. Минск'
+        @pr = @c.row(@l)[@k]
+      end
+    end
+    out
+  end
+
+  def check(mas)
+    !mas[0].nil? && mas[0] == @name.upcase || mas[0] =~ /#{@name.upcase}[.,) ]{1}/
+  end
+
+  def similar
+    a = []
+    @c.each do |mas|
+      mas.each do |arr|
+        (a << mas[0]) if arr == @pr && mas[0] !~ /#{@name.upcase}[.,) ]{1}/ && mas[0] != @name.upcase
+      end
+    end
+    similar_out(a.uniq)
+  end
+
+  def out
+    if @pr.nil? && @l.zero?
+      puts "No #{@name} in table"
+    else
+      puts "'#{@name.capitalize}' is #{@pr} BYN in Minsk on these days"
+      MinMaxPrice.new(@k, @pr, @name).min_max
+      similar
+    end
+  end
+
+  def similar_out(arr)
+    if arr.empty?
+      puts 'No product with similar price'
+    else
+      str = arr.map { |r| r.to_s.capitalize.gsub(/\s+/, ' ') }.join(', ')
+      puts "For similar price u can buy #{str}"
+    end
+  end
+end
+
+class MinMaxPrice
+  def initialize(kol, price, name)
+    @k = kol
+    @pr = price
+    @name = name
+    @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 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 minim(file, min, dat)
+    coef = old_price(file)
+    file.each_with_index do |_, i|
+      next unless file.row(i)[0] == @name.upcase || file.row(i)[0] =~ /#{@name.upcase}[.,) ]{1}/
+
+      min = checkmin(file.row(i)[@k], min, coef, dat)
+    end
+    min
+  end
+
+  def maxim(file, max, dat)
+    coef = old_price(file)
+    file.each_with_index do |_, i|
+      next unless file.row(i)[0] == @name.upcase || file.row(i)[0] =~ /#{@name.upcase}[.,) ]{1}/
+
+      max = checkmax(file.row(i)[@k], max, coef, dat)
+    end
+    max
+  end
+
+  def checkmin(file, min, coef, dat)
+    if !file.nil? && (coef * file) < min
+      min = coef * file
+      @min_dat = dat
+    end
+    min
+  end
+
+  def checkmax(file, max, coef, dat)
+    if !file.nil? && (coef * file) > max
+      max = coef * file
+      @max_dat = dat
+    end
+    max
+  end
+
+  def get_date(file)
+    dates = file.row(3)[0].split(' ')
+    @date.each do |d, t|
+      (dates[1] = t) if dates[1] == d.to_s
+    end
+    dates[1..2]
+  end
+
+  def old_price(file)
+    date = get_date(file)
+    date[1].to_i < 2017 ? 0.0001 : 1
+  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 min_max
+    min = max = @pr
+    all_files
+    @all.each do |f|
+      next if f.nil?
+
+      dat = get_date(f)
+      min = minim(f, min, dat)
+      max = maxim(f, max, dat)
+    end
+    min_out(min, @min_dat)
+    max_out(max, @max_dat)
+  end
+end
+
+s = Price.new
+s.find