Space - Lak

main.rb

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+require_relative 'planet'
+require_relative 'solar_system'
+
+def display_options_to_do_next
+    puts "What would you like to do next?"
+    puts "Type 'list' if you want to dispay the planet list"
+    puts "Type 'exit' if you want to exit the program"
+    puts "Type 'planet details' if you want to see the planet details"
+    puts "Type 'add planet' if you wnat to add a new planet"
+end
+
+def planet_detial(solar_system_instance)
+    puts "what planet would you like to dispay detial"
+    user_input = gets.chomp
+    planet =  solar_system_instance.find_planet_by_name(user_input)
+    if planet.nil?
+        puts "The planet is not listed"
+    else
+        puts planet.summary()
+    end
+end 
+
+def add_new_planet(solar_system_instance)
+    puts "what is the planet's name"
+    name = gets.chomp
+    puts "What is the planet's color"
+    color = gets.chomp
+    puts "What is the planet's mass_kg"
+    mass_kg = gets.chomp
+    puts "What is the planet's distance from sum km"
+    distance_from_sun_km = gets.chomp
+    puts "What is the planet's fun_fact"
+    fun_fact = gets.chomp
+    new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
+    solar_system_instance.add_planet(new_planet)
+    puts solar_system_instance.list_planets
+    new_planet =  solar_system_instance.find_planet_by_name(name)
+    puts new_planet.summary
+end 
+
+def main
+    solar_system = SolarSystem.new('Sol')
+    mercury = Planet.new('Mercury', 'dark gray', 2.235e33, 4.208e1, 'Mercury is a lonely planet!')
+    solar_system.add_planet(mercury)
+
+    venus = Planet.new('Venus', 'yellow', 1.868e33, 10.900e3,  'Venus is very hot')
+    solar_system.add_planet(venus)
+
+    earth = Planet.new('Earth', 'blue-green', 5.972e24, 4.496e8, 'Only planet known to support life.')
+    solar_system.add_planet(earth)
+
+    mars = Planet.new('Mars', 'red', 2.453e45, 1.345e5, 'Mars is red it is awesome!')
+    solar_system.add_planet(mars)
+
+    jupiter = Planet.new('Jupiter', 'purple', 3.546e33, 9.456e7, 'Pluto is purple, is the best!')
+    solar_system.add_planet(jupiter)
+
+    should_continue = true
+    while should_continue
+        display_options_to_do_next    
+        user_input = gets.chomp.downcase
+        if user_input == "list"
+            puts "#{list = solar_system.list_planets}"
+        elsif user_input == "exit"
+            puts "Good Bye! Thank you!"
+            break
+        elsif user_input == "planet details"
+            planet_detial(solar_system)
+        elsif user_input == "add planet"
+            add_new_planet(solar_system)
+        end   
+    end
+end
+
+main()

planet.rb

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+# Wave 1
+class Planet
+
+    # Generate reader methods for the above instances 
+    attr_reader :name, :color, :mass_kg, :distance_from_sun_km, :fun_fact
+
+    # Add a constructor to your Planet class
+    def initialize(name, color, mass_kg, distance_from_sun_km, fun_fact)
+        @name = name
+        @color = color
+        @mass_kg = mass_kg
+        @distance_from_sun_km = distance_from_sun_km
+        @fun_fact = fun_fact
+    end
+
+    # Add an instance method to Planet called summary. 
+    # This method should return (not puts) a string containing a nicely-formatted description of the planet. 
+    # Exercise your summary method in the main method.
+
+    def summary
+        return "The planet's name is #{@name}, the color is #{@color} with the weight of #{@mass_kg}kg, it is #{@distance_from_sun_km}km from the sun, and it is the #{@fun_fact}"
+    end
+end
+

solar_system.rb

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+
+# Create a new class called SolarSystem
+class SolarSystem 
+    attr_reader :star_name, :planets
+    # Constructor 
+
+    def initialize(star_name)
+        @star_name = star_name
+        @planets = []
+    end
+    # Wave 2
+    # Create a method SolarSystem#add_planet, 
+    # which will take an instance of Planet as a parameter 
+    # and add it to the list of planets.
+
+    def add_planet(planet) 
+        @planets << planet
+        return @planet
+    end 
+
+    # Create a method SolarSystem#list_planets, 
+    # which will return (not puts) a string containing a list of all the planets in the system. 
+    # The string should be formatted in this style:
+
+    def list_planets 
+        string = "Planet orbiting #{@star_name}\n"
+        num = 1
+        @planets.each do |planet|
+            string += "#{num}. #{planet.name}\n"
+            num += 1
+        end
+        return string
+    end
+
+    #Create a method SolarSystem#find_planet_by_name
+    def find_planet_by_name(string)   
+        planets.each do |planet|
+            if planet.name.downcase == string.downcase 
+                return planet
+            end
+        end 
+    end
+end
+