lib/coinmarketcap.rb in coinmarketcap-0.1.2 vs lib/coinmarketcap.rb in coinmarketcap-0.2.0

@@ -1,7 +1,9 @@
 require 'coinmarketcap/version'
+require 'open-uri'
 require 'httparty'
+require 'nokogiri'
 
 module Coinmarketcap
 
   def self.coins(limit = nil)
     if limit.nil?
@@ -15,8 +17,34 @@
     HTTParty.get("https://api.coinmarketcap.com/v1/ticker/#{id}/")
   end
 
   def self.global(currency = 'USD')
     HTTParty.get("https://api.coinmarketcap.com/v1/global/?convert=#{currency}")
+  end
+
+  def self.get_historical_price(id, start_date, end_date) #20170908
+    prices = []
+    doc = Nokogiri::HTML(open("https://coinmarketcap.com/currencies/#{id}/historical-data/?start=#{start_date}&end=#{end_date}"))
+    rows = doc.css('tr')
+    if rows.count == 31
+      doc = Nokogiri::HTML(open("https://coinmarketcap.com/assets/#{id}/historical-data/?start=#{start_date}&end=#{end_date}"))
+      rows = doc.css('tr')
+    end
+    rows.shift
+    rows.each do |row|
+      begin
+        price_bundle = {}
+        each_row = Nokogiri::HTML(row.to_s).css('td')
+        price_bundle[:date] = Date.parse(each_row[0].text)
+        price_bundle[:open] = each_row[0].text
+        price_bundle[:high] = each_row[1].text
+        price_bundle[:low] = each_row[2].text
+        price_bundle[:close] = each_row[3].text
+        prices << price_bundle
+      rescue => error
+        next
+      end
+    end
+    prices
   end
 
 end