Time - Jocelyn

main.rb

@@ -0,0 +1,91 @@
+require 'pry'
+require_relative 'planet'
+require_relative 'solar_system'
+
+# Returns the details for the planet using method from Solar System
+def display(solar_system)
+	puts "Which planet would you like to see?"
+	display_planet = gets.chomp.downcase
+	begin
+		puts solar_system.find_planet_by_name(display_planet).summary()
+	rescue NoMethodError => e
+		puts "Planet not in solar systen. Please enter a different planet or add new planet to the solar system."
+	end
+end
+
+# Verifies that the data is a number
+def verify_number(data_to_verify)
+  until (Float(data_to_verify) rescue nil) != nil && data_to_verify.to_f > 0
+    puts "Input not accepted, please enter a number:"
+    data_to_verify = gets.chomp
+  end
+  data_to_verify.to_f
+end
+
+# Prompts for user input to create a new Planet
+def user_create_planet(solar_system)
+	puts "What is the name of the planet?"
+	user_planet_name = gets.chomp.capitalize
+
+	puts "What color is #{user_planet_name}?"
+	user_planet_color = gets.chomp.downcase
+
+	puts "What is its mass in kilograms?"
+	user_planet_mass = verify_number(gets.chomp)
+
+	puts "What distance is the planet from the sun (in kilometers)?"
+	user_planet_distance = verify_number(gets.chomp)
+
+	puts "Can you share a fun fact about #{user_planet_name}?"
+	user_planet_fun_fact = gets.chomp.capitalize
+
+	user_planet = Planet.new(user_planet_name,user_planet_color, user_planet_mass,user_planet_distance,user_planet_fun_fact)
+	solar_system.add_planet(user_planet)
+end
+
+# Finds distance between two planets using Solar System
+def display_distance_between(solar_system)
+	puts "Please enter the name of the first planet."
+	planet_one = gets.chomp
+
+	puts "Please enter the name of the second planet."
+	planet_two = gets.chomp
+
+	puts "The distance between #{planet_one} and #{planet_two} is #{solar_system.distance_between(planet_one, planet_two)} km."
+end
+
+# Control panel to call in methods for user to select options
+def main 
+	solar_system = SolarSystem.new('Sol')
+
+	earth = Planet.new('Earth', 'blue-green', 5.972e24, 4.769e9, 'Only planet known to support life')
+	solar_system.add_planet(earth)
+
+	venus = Planet.new('Venus', 'White', 6.392e24, 2.982e9, 'Sister planet to Earth')
+	solar_system.add_planet(venus)
+
+	puts "What action would you like to take?"
+	user_control = gets.chomp.downcase
+
+	# Prompts user for options until they choose to exit
+	until user_control == 'exit'
+		case user_control
+		when 'list planets'
+			puts solar_system.list_planets
+		when 'planet details'
+			display(solar_system)
+		when 'add planet'
+			user_create_planet(solar_system)
+		when 'find distance'
+			display_distance_between(solar_system)
+		else
+			puts "Please enter a valid option."
+		end
+
+		puts "What action would you like to take next?"
+		user_control = gets.chomp.downcase
+	end
+
+end
+
+main

planet.rb

@@ -0,0 +1,44 @@
+require 'pry'
+
+class Planet
+	attr_reader :name, :color, :fun_fact, :mass_kg, :distance_from_sun_km
+
+	# Creates constructor for planet attributes
+	def initialize(name, color, mass_kg, distance_from_sun_km, fun_fact)
+		@name = name
+		@color = color
+		self.mass_kg = mass_kg
+		self.distance_from_sun_km = distance_from_sun_km
+		@fun_fact = fun_fact
+	end
+
+	# Creates summary using details about the planet
+	def summary()
+		return "#{@name} is a wonderful planet! It is a beautiful #{color} color! #{@name} has a mass of #{mass_kg} kg and is #{distance_from_sun_km} km from the sun. You might be surprised to find that: #{fun_fact}."
+	end
+
+	# Verifies that mass is in numbers
+	def mass_kg=(value)
+		begin
+			value > 0
+			@mass_kg=(value)
+		rescue
+			puts "Mass entered is not in number format, please enter as a number."
+			user_input = gets.chomp.to_f
+			@mass_kg = user_input
+		end
+	end 
+
+	# Verifies that distance is in numbers
+	def distance_from_sun_km=(value)
+		begin
+			value > 0
+			@distance_from_sun_km=(value)
+		rescue
+			puts "Distance entered is not in number format, please enter as a number."
+			user_input = gets.chomp.to_f
+			@distance_from_sun_km = user_input
+		end
+	end 
+
+end

solar_system.rb

@@ -0,0 +1,37 @@
+require 'pry'
+
+class SolarSystem
+	attr_reader :star_name, :planets
+
+	# Creates constructor for solar system attributes
+	def initialize(star_name)
+		@star_name = star_name
+		@planets = []
+	end
+
+	# Adds a planet object to solar system
+	def add_planet(planet)
+		@planets << planet
+	end
+
+	# Lists out all planets in the solar system
+	def list_planets()
+		planets_list = @planets.each_with_index.map {|planet,index|
+			"#{index + 1}. #{planet.name}"}
+		planets_list.unshift("Planets orbiting #{@star_name}:\n").to_s
+
+		return planets_list 
+	end
+
+	# Returns the planet object by name
+	def find_planet_by_name(planet_name)
+		@planets.detect {|planet| 
+			planet.name.downcase.include? planet_name.downcase}
+	end
+
+	# Calculates the distance between two planets
+	def distance_between(planet_one, planet_two)
+		return (find_planet_by_name(planet_one).distance_from_sun_km - find_planet_by_name(planet_two).distance_from_sun_km).abs
+	end
+end
+