Space - Nora

main.rb

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+# main.rb
+require_relative "planet"
+require_relative "solar_system"
+
+def main
+  solar_system = SolarSystem.new("Sun")
+  earth = Planet.new("Earth", "blue-green", 5.972e24, 1.496e8, "Only planet known to support life")
+  mars = Planet.new("Mars", "red", 5.972e24, 1.496e8, "Could be teraformed")
+  jupiter = Planet.new("Jupiter", "yellow", 5.972e24, 1.496e8, "Something something")
+  mercury = Planet.new("Mercury", "grey", 5.972e24, 1.496e8, "Liquid silver")
+  venus = Planet.new("Venus", "green", 5.972e24, 1.496e8, "Goddess planet")
+
+  solar_system.add_planet(earth)
+  solar_system.add_planet(mars)
+  solar_system.add_planet(jupiter)
+  solar_system.add_planet(mercury)
+  solar_system.add_planet(venus)
+
+  user_planet = ""
+  user_input = ""
+
+  puts "Welcome to the Solar System Info Machine!\n"
+  until user_input == "D"
+    puts "\nWould you like to: \nA) View the list of planets \nB) View planet details \nC) Add a planet \nD) Exit"
+    puts "Enter A, B, C, or D "
+    user_input = gets.chomp.upcase
+    case user_input
+    when "A" # View the list of planets
+      list = solar_system.list_planets
+      puts list
+    when "B" # View planet details
+      puts "What planet would you like to learn about? "
+      user_planet = gets.chomp
+      found_planet = solar_system.find_planet_by_name(user_planet)
+      puts found_planet.summary
+    when "C" # Add a planet
+      puts "Wow! You've discovered a new planet!"
+      puts "Tell us about the planet:"
+      puts "Name:"
+      new_name = gets.chomp.capitalize
+      puts "Color:"
+      new_color = gets.chomp.capitalize
+      puts "Mass - kg (Ex: 5.972e24):"
+      new_mass = gets.chomp
+      puts "Distance from sun - km (Ex: 1.496e8):"
+      new_distance = gets.chomp
+      puts "Fun fact:"
+      new_fun_fact = gets.chomp
+      puts "Congratulations on submitting a new planet!"
+
+      new_planet = Planet.new(new_name, new_color, new_mass, new_distance, new_fun_fact)
+      solar_system.add_planet(new_planet)
+    when "D" # Exit
+      puts "Have fun storming the solar system!"
+      exit
+    else
+      puts "You entered an invalid answer. Try again."
+    end
+  end
+end
+
+main
+
+# final example from teachers https://github.com/AdaGold/solar-system/blob/c13-soln/main.rb

planet.rb

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+class Planet
+  attr_reader :name, :color, :mass_kg, :distance_from_sun_km, :fun_fact
+
+  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
+
+  def summary
+    return "Name: #{@name}\n
+     Color: #{@color}\n
+     Mass (kg): #{@mass_kg}\n
+     Distance (km) from sun: #{@distance_from_sun_km}\n
+     Fun Fact: #{@fun_fact}"
+  end
+end

solar_system.rb

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+require_relative "planet"
+
+class SolarSystem
+  attr_reader :star_name, :planets
+
+  def initialize(star_name, planets = [])
+    @star_name = star_name
+    @planets = planets
+  end
+
+  def add_planet(planet)
+    @planets.push(planet)
+  end
+
+  def list_planets
+    intro = "Planets orbiting #{@star_name}\n"
+    list_string = ""
+    @planets.each_with_index do |planet, i|
+      list_string += "#{i + 1}. #{planet.name}\n"
+    end
+    return intro + list_string
+  end
+
+  def find_planet_by_name(planet_name)
+    @planets.each do |planet|
+      return planet if planet.name == planet_name.capitalize
+    end
+  end
+
+  #example from final from teachers
+  # def find_planet_by_name(query)
+  #   # Note: We can use planets, @planets, or self.planets
+  #   first_found_planet = planets.find do |planet|
+  #     planet.name.upcase == query.upcase
+  #   end
+  #   return first_found_planet
+  #   # We return the first found planet, even if there's another matching one.
+  #   # If there is no found planet, then we will return nil.
+  # end
+
+end