class StockInfo::CLI
Public Instance Methods
The call method should (1) Main menu list options : (a) List of stocks (b) Top companies by mkt cap © Most volatile stock (d) quit (a) If the user picks a stock from the list a method to display additional information about the stock should be called and then go back to the main menu The symbol entered should be valid? (2) Call the appropriate method after the user makes their choice (3) Print an error message if the option is invalid and list the options again
# File lib/stock-info/cli.rb, line 86 def call create_stocks unless !StockInfo::Stock.all.empty? puts "(a) To view the list of stocks enter --- list" puts "(b) To view the list of companies in desc order of Market cap enter --- mkt" puts "(c) To view the list of stocks in desc order of volatility enter --- vol" puts "(b) To exit the program enter --- 'quit'" input_1 = gets.strip if["list", "mkt", "vol", "quit"].include? input_1.downcase if input_1.downcase == "list" display_list input_for_additional_info call elsif input_1.downcase == "mkt" display_by_market_cap call elsif input_1.downcase == "vol" display_by_vol call elsif input_1.downcase == "quit" puts "You have chosen to exit the app" end else puts "Please enter a valid option" call end end
The cli should display 2 options List and quit and accept a valid input if list then display the list of stocks and symbols –> create method called display_list
the display_list
method should display the stocks and ask the user to enter a valid symbol the display_list
method should use the @@all array from the Stock class to display the list of stocks the create_stocks
method should us the scraper and stock classes to create instances of stocks The display_additional_info
method adds information about the stock that is available through the stock url like index, PE ratio and eps and the output should include basic information about the stock (from) the main web page as well as the information scraped from the stock url
# File lib/stock-info/cli.rb, line 20 def create_stocks outer_array = StockInfo::Scraper.scrape_screener StockInfo::Stock.create_from_scraper_array(outer_array) end
# File lib/stock-info/cli.rb, line 35 def display_additional_info(stock_symbol) stock = StockInfo::Stock.all.find {|stock| stock.symbol == stock_symbol} info = StockInfo::Scraper.scrape_stock_info("https://finviz.com/" + stock.url) #Scraper.scrape_stock_info(url) stock.add_stock_info(info) puts "#{stock.name} belongs to the #{stock.sector} sector and has a marketcap of #{stock.mktcap.gsub("B"," Billion")}" puts " " puts "The major index/indices that include(s) it is/are #{stock.index.gsub("DJIA ","DJIA and ")}" puts " " puts "The Earnings per share is #{stock.eps}" puts " " end
# File lib/stock-info/cli.rb, line 62 def display_by_market_cap array = [] array = StockInfo::Stock.all.sort_by {|stock| stock.mktcap}.reverse array.each {|stock| puts stock.name.ljust(25) + stock.mktcap.gsub("B", " Billion").rjust(1)} puts " " end
# File lib/stock-info/cli.rb, line 69 def display_by_vol array = [] array = StockInfo::Stock.all.sort_by {|stock| stock.change.gsub("%","").gsub("-","").to_f}.reverse array.each {|stock| puts stock.name.ljust(25) + stock.change.rjust(2)} puts " " end
# File lib/stock-info/cli.rb, line 26 def display_list puts " " #binding.pry StockInfo::Stock.all.each do |stock| puts stock.srno.ljust(5) + stock.symbol.ljust(10) + stock.name.ljust(25) + stock.price.rjust(5) end puts " " end
# File lib/stock-info/cli.rb, line 47 def input_for_additional_info puts "Enter a valid symbol for more information or enter 'quit' to return to the main menu" puts " " valid_symbols = StockInfo::Stock.all.collect {|stock| stock.symbol} input_symbol = gets.strip if valid_symbols.include? input_symbol.upcase display_additional_info(input_symbol.upcase) elsif input_symbol == "quit" puts "You are returning to the main menu" puts " " else input_for_additional_info end end