# 1. ARRAYS
arr1 = ['a', 'b', 'c']
arr1 << 'd'
arr2 = (0..4).to_a
arr3 = ['blue', 'green', 'red']
arr4 = [4, 5, 3]
h1 = arr3.zip(arr4).to_h
h2 = [arr3, arr4].transpose.to_h

# 2. HASHES
h1 = {street: '123 Main St', city: 'Austin', state: 'TX'}
h1.slice(:street) #=> {:street=>"123 Main St"}
h1[:country] = 'USA'
h1.keys
h1.values

# 3. ITERATION - EACH
h1.each do |k,v|
  puts "#{k} is key, and #{v} is value."
end

(1..5).each do |i|
  puts "iteration #{i}"
end

# 4. ITERATION - WHILE
i = 1
while i <= 5
  puts "Number #{i}"
  i+=1
end

# 5. ITERATION - FOR
for i in 6..10
   puts "Number #{i}"
end

# 6. ITERATION - UNTIL
i = 1
limit = 5

until i > limit  do
  puts "Number #{i}"
  i += 1
end

# 7. CONDITIONAL
season = 'fall'

if season == 'spring'
  puts "It's getting warm."
elsif season == 'summer'
  puts "It's so hot!"
elsif season == 'fall'
  puts "It's really windy!"
elsif season == 'winter'
  puts "It's freezing!"
else
  puts "Please enter a valid season"
end

# 8. CASE STATEMENTS
grade = 'B'

case grade
when 'A'
  puts "Way to go kiddo"
when 'B'
  puts "Better luck next time"
when 'C'
  puts "You can do better"
when 'D'
  puts "Scraping through"
when 'F'
  puts "You failed!"
else
  puts "Alternative grading system, eh?"
end

# 9. Methods
def greet(name)
  puts "Welcome, #{name}!"
end
greet('Adam')

def sum(x,y)
  x + y
end
sum(3, 4)

def guest_list(*gusts)
   gusts.each { |guest| puts "#{guest}" }
end
guest_list('Tom', 'Mary')

# 10. Classes
class Bank
  # attr_accessor :deposit

  def initialize
    # enter_password
    # check_password
    @password = nil
    @balance = nil
    @name = nil
  end

  def enter_password
    puts "Please enter your password."
    @password = gets.chomp
    @balance = 100
    @name = 'Tom'
  end

  def check_password
    if @password == "1234"
      @balance = 100
      @name = 'Tom'
      greeting
    else
      puts "Sorry, password not recognized"
      enter_password
    end
  end

  def greeting
    puts "Welcome, #{@name}.  How can we help you today?"
  end

  def deposit(amount)
    update = @balance + amount
    puts "Deposit of $#{amount} + $#{@balance} balance = $#{update} new total."
    @balance = update
  end

  def withdrawel(amount)
    update = @balance - amount
    puts "Withdrawel of $#{amount} from $#{@balance} balance = $#{update} new total."
    @balance = update
  end

end

bank = Bank.new
bank.deposit(20)