class Artist

  attr_reader :name, :years_experience
  @@all = []

  def initialize(name, years_experience)
    @name = name
    @years_experience = years_experience
    @@all << self
  end

  def self.all
    @@all
  end

  def paintings
    Painting.all.select{|painting| painting.artist == self}
  end

  def galleries
    self.paintings.map{|painting| painting.gallery}.uniq   
  end

  def cities
    self.galleries.map{|gallery| gallery.city}.uniq
  end

  def self.total_experience
    Artist.all.sum{|artist| artist.years_experience}
  end
  
  def proficiency
   self.paintings.count.to_f / self.years_experience
  end

  def self.most_prolific
    Artist.all.max_by{|artist| artist.proficiency}
  end

  def create_painting(title, price, gallery)
   Painting.new("#{title}", "#{price}", self, "#{gallery}")
  end
end

class Painting

  attr_reader :title, :price, :artist, :gallery

  @@all = []

  def initialize(title, price, artist, gallery)
    @title = title
    @price = price
    @artist = artist
    @gallery = gallery
    @@all << self
  end

  def self.all
    @@all
  end

  def self.total_price
    Painting.all.map{|painting| painting.price}.sum
  end
end

class Gallery

  attr_reader :name, :city
  @@all = []

  def initialize(name, city)
    @name = name
    @city = city
    @@all << self
  end

  def self.all
    @@all
  end

  def paintings
    Painting.all.select{|painting| painting.gallery == self}
  end

  def artists
    self.paintings.map{|painting| painting.artist}.uniq
  end

  def artist_names
    self.paintings.map{|painting| painting.artist.name}.uniq
  end

  def most_expensive_painting
    self.paintings.max_by{|painting| painting.price}
  end
end

*console.rb
require_relative '../config/environment.rb'

ben = Artist.new("Ben", 1)
maggie = Artist.new("Maggie", 9)

fra = Gallery.new("FRA", "New York")
buckets = Gallery.new("Galerie Buckets", "Cologne")

shark_tonk_2 = Painting.new("Shark Tonk II", 5000, ben, fra)
shark_tonk = Painting.new("Shark Tonk", 5000, ben, fra)
heart_fountain = Painting.new("Heart Fountain", 10000, maggie, buckets)
unhappy_break_up = Painting.new("Unhappy Break Up", 12000, maggie, buckets)
unhappy_break_up_2 = Painting.new("Unhappy Break Up II", 12000, maggie, fra)
tile = Painting.new("Tile", 6000, maggie, buckets)

binding.pry

puts "Bob Ross rules."

# Art Gallery Lab

In this project, we will be practicing object relationships in Ruby, with a particular emphasis on the `has_many` `through` relationship (aka: many-to-many). Please read the whole README before writing any code!

### Introduction

You got yourself a fancy new job and you've been put in charge of making a program to keep track of paintings, and the galleries that are selling them.  

Each painting has a price, and a title.  Each artist has a name and an amount of years of experience, and each gallery has a name and a city.

The initial files and basic attributes have already been built, but you'll need to figure out the relationships and build the rest of the app out yourself!

## Deliverables

### Model the Domain

An artist can, of course, have many paintings. Paintings can only be in one gallery at a time, and only have one artist.  Galleries can have many paintings.

* What are your models?
* What does your schema look like?
* What are the relationships between your models?

### Class Attributes and Methods

**ARTIST**
<!-- 
  * `Artist.all`
    * Returns an `array` of all the artists

  * `Artist#paintings`
    * Returns an `array` all the paintings by an artist

  * `Artist#galleries`
    * Returns an `array` of all the galleries that an artist has paintings in -->
<!-- 
  * `Artist#cities`
    * Return an `array` of all cities that an artist has paintings in -->
<!-- 
  * `Artist.total_experience`
    * Returns an `integer` that is the total years of experience of all artists

  * `Artist.most_prolific`
    * Returns an `instance` of the artist with the highest amount of paintings per year of experience.

  * `Artist#create_painting`
    * Given the arguments of `title`, `price` and `gallery`, creates a new painting belonging to that artist -->

**PAINTING**
<!-- 
  * `Painting.all`
    * Returns an `array` of all the paintings

  * `Painting.total_price`
    * Returns an `integer` that is the total price of all paintings -->

**GALLERY**

  <!-- * `Gallery.all`
    * Returns an `array` of all the galleries

  * `Gallery#paintings`
    * Returns an `array` of all paintings in a gallery -->

  <!-- * `Gallery#artists`
    * Returns an `array` of all artists that have a painting in a gallery -->
<!-- 
  * `Gallery#artist_names`
    * Returns an `array` of the names of all artists that have a painting in a gallery -->

  * `Gallery#most_expensive_painting`
    * Returns an `instance` of the most expensive painting in a gallery