Earth - Emily

Planet.rb

@@ -0,0 +1,15 @@
+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 "Planet name: #{@name}. #{@name.capitalize}'s color is #{@color}. This planet's mass is #{@mass_kg} and #{@distance_from_sun_km} million km away from the sun. An interesting fact is that #{@fun_fact}."
+  end
+end

README.md

@@ -43,7 +43,7 @@ The learning goal for this wave is to practice working with individual instances
 
     ```ruby
     # Load Planet into pry:
-    # $ pry -r ./planet.rb
+    # $ pry -r ./Planet.rb
     earth = Planet.new('Earth', 'blue-green', 5.972e24, 1.496e8, 'Only planet known to support life')
 
     puts earth.name

Solar_System.rb

@@ -0,0 +1,50 @@
+class SolarSystem
+  attr_reader :star_name, :planets
+
+  def initialize(star_name)
+    @star_name = star_name
+    @planets = []
+    @list_of_planets = []
+
+  end
+
+  def add_planet(planet)
+    @planets << planet
+  end
+
+  #Taking string, planet, and returning instance planet by
+  # pushing into an instance variable array
+  def list_planets
+    puts "Planets orbiting #{star_name}:"
+
+    @planets.each_with_index do |planet, i|
+      @list_of_planets << "#{i+1}. #{planet.name}"
+    end
+    return @list_of_planets
+  end
+
+  def find_planet_by_name(planet_name)
+    @planets.each do |planet|
+      if planet == planet_name
+        return planet.summary
+      end
+    end
+    return "Invalid planet."
+  end
+
+  def add_new_planet
+    print "Which planet would you like to add? > "
+    new_planet_name = gets.chomp
+    print "What's the color? > "
+    new_planet_color = gets.chomp
+    print "What's the mass? > "
+    new_planet_mass = gets.chomp
+    print "Distance from the sun? > "
+    new_planet_distance = gets.chomp
+    puts "What about a fun fact?:"
+    new_planet_fact = gets.chomp.capitalize
+
+    new_planet = Planet.new(new_planet_name, new_planet_color, new_planet_mass, new_planet_distance, new_planet_fact)
+    add_planet(new_planet)
+  end
+end

main.rb

@@ -0,0 +1,46 @@
+require_relative "Planet"
+require_relative "Solar_System"
+
+def main
+  solar_system = SolarSystem.new('Sol')
+
+  mercury = Planet.new( 'Mercury', 'dark gray', 3.285e23, 57.9, 'Mercury is shrinking!')
+  solar_system.add_planet(mercury)
+
+  venus = Planet.new('Venus', 'white', 4.867e24, 108.2, 'A day on Venus is longer than a year')
+  solar_system.add_planet(venus)
+
+  earth = Planet.new('Earth', 'blue-green', 5.972e24, 149.6, 'Only planet known to support life')
+  solar_system.add_planet(earth)
+
+  mars = Planet.new('Mars', 'red', 6.39e24, 227.9, 'Pieces of Mars have fallen to Earth')
+  solar_system.add_planet(mars)
+
+  jupiter = Planet.new('Jupiter', 'white-orange-red', 1.898e27, 778.3, 'Jupiter has the shortest day of all the planets')
+  solar_system.add_planet(jupiter)
+
+  run_solar_system = true
+  puts "Enter: list planets | planet details | add planet | exit"
+
+  while run_solar_system
+    user_input = gets.chomp
+    if user_input == "exit"
+      puts "Have a great day!"
+      return run_solar_system == false
+    elsif user_input == "list planets"
+      puts solar_system.list_planets
+      puts "Enter planet details to learn more or enter exit"
+    elsif user_input == "planet details"
+      puts "You picked planet details!"
+      puts "Which planet do you want to learn about?"
+      planet_name = gets.chomp
+      puts solar_system.find_planet_by_name(planet_name) #not working
+    elsif user_input == "add planet"
+      solar_system.add_new_planet
+    else
+      puts "Invalid prompt"
+    end
+  end
+end
+
+main