Find Degree of separtion in ruby

find_degree.rb

@@ -0,0 +1,144 @@
+#------ This program used to find degrees of separtion between two persons -------#
+#------ Ruby proraming language used ----- #
+#--- To run this use following commend --- ruby find_degree.rb ---#
+
+require 'open-uri'
+require 'json'
+require 'open_uri_redirections'
+
+def get_input
+
+	puts "Enter two names with a space"
+	inputs = gets.chomp.split(' ')
+
+	if inputs.size < 2
+		puts"Wrong number of inputs. Kindly try agin"
+		get_input
+	else
+		actor1,actor2 = inputs[0],inputs[1]
+	end # if inputs.size < 2
+
+	#puts"--- #{actor1} --- #{actor2} ---"
+
+    actor1_details = fetch_details(actor1)
+    actor2_details = fetch_details(actor2)
+
+	actor1_movies = movie_list(actor1)
+	actor2_movies = movie_list(actor2)
+
+	common_movie = actor1_movies & actor2_movies
+
+	if common_movie.length != 0
+
+		puts "Matched :#{common_movie[0]}\n"
+        puts "\nDegrees of Separation: 1\n\n"
+
+        movie = fetch_details(common_movie[0])
+
+        movie["cast"] = [] if movie["cast"] == nil
+
+		movie["crew"] = [] if movie["crew"] == nil
+
+		cast1 = (movie["cast"] + movie["crew"]).select{|d| d if d['url'] == actor1}
+		actor1_role = cast1[0]["role"]
+
+		cast2 = (movie["cast"] + movie["crew"]).select{|d| d if d['url'] == actor2}
+		actor2_role = cast1[0]["role"]
+
+        puts "1.Movie : #{movie["name"]}\n"
+        puts "#{actor1_role} : #{actor1}\n"
+        puts "#{actor2_role} : #{actor2}\n\n"
+
+        exit
+
+	else
+
+		find_next_degree(actor1_details,actor2_details,actor1,actor2)
+
+	end # if common_movie.length != 0
+
+end # def get_input
+
+def find_next_degree(first_movie_list, second_movie_list,actor1,actor2)
+
+  matched_cast_list = []
+
+  first_movie_list['movies'].each do |first_movie_hash| 
+
+    first_movie_cast_list = fetch_details(first_movie_hash['url'])
+    if !first_movie_cast_list.empty?
+      first_cast_list = first_movie_cast_list['cast']
+      second_movie_list['movies'].each do |second_movie_hash| 
+
+        second_movie_cast_list = fetch_details(second_movie_hash['url'])
+        if !second_movie_cast_list.empty?
+          second_cast_list = second_movie_cast_list['cast']
+          first_degree_names = first_cast_list.collect{|f| f["name"]}
+          second_degree_names =  second_cast_list.collect{|s| s["name"]}
+          matched_cast_list = first_degree_names & second_degree_names
+          if matched_cast_list.count > 0
+            puts "Matched in both #{matched_cast_list}\n"
+            first_seperation = first_cast_list.select {|c| c if c["name"] == matched_cast_list[0]}
+
+            puts "\nDegrees of Separation: 2\n\n"
+
+            puts "1.Movie : #{first_movie_hash['name']}\n"
+            puts "#{first_movie_hash['role']} : #{first_movie_list['name']}\n"
+            puts "#{first_seperation[0]['role']} : #{first_seperation[0]['name']}\n\n"
+
+            puts "2.Movie : #{second_movie_hash['name']}\n"
+            puts "#{first_seperation[0]['role']} : #{first_seperation[0]['name']}\n"
+            puts "#{second_movie_hash['role']} : #{second_movie_list['name']}\n"
+
+            exit
+          end
+        end
+      end
+    end
+  end
+  puts "\nNo Degree of Separation found for this 2 names"
+
+end # def find_next_degree(actor1_details,actor2_details,actor1,actor2)
+
+def fetch_details(name)
+
+	url = "http://data.moviebuff.com/"
+
+    begin
+        data = JSON.load(open(url+name,  :allow_redirections => :safe))
+    rescue
+        data = {}
+    end
+
+end # def fetch_details(name)
+
+
+def movie_list(actor)
+
+	movie_details = fetch_details(actor)
+
+	if movie_details['movies'] != nil	
+		movie_details['movies'].map{|movie| movie['url']}.compact
+	else
+		{}
+	end
+
+end # def movie_list(actor1)
+
+def actor_list(movie)
+
+	actor_details = fetch_details(movie)
+
+	actor_details["cast"] = [] if actor_details["cast"] == nil
+
+	actor_details["crew"] = [] if actor_details["crew"] == nil
+
+	(actor_details["cast"] + actor_details["crew"]).map{|actor| actor['url']}.compact
+
+end # def actor_list(movie)
+
+def call_output()
+	puts"-- output --- #{@degree} ---"
+end
+
+get_input