state_info.rb

# @states = {
#   OR: 'Oregon',
#   FL: 'Florida',
#   CA: 'California',
#   NY: 'New York',
#   MI: 'Michigan'
# }

# # Task 1
# @states[:MN] = 'Minnesota'
# @states[:NV] = 'Nevada'

# # Task 2

# @cities = {
#   OR: ['Portland', 'Salem', 'Eugene', 'Gresham'],
#   FL: ['Jacksonville', 'Miami', 'Tampa', 'St. Petersburg'],
#   CA: ['Los Angeles', 'San Diego', 'Santa Clara', 'San Francisco'],
#   NY: ['New York', 'Buffalo', 'Rochester', 'Yonkers'],
#   MI: ['Detroit', 'Grand Rapids', 'Warren', 'Sterling Heights'],
#   MN: ['Minneapolis', 'St. Paul', 'Rochester', 'Bloomington'],
#   NV: ['Las Vegas', 'Henderson', 'Reno', 'North Las Vegas']
# }

# # Task 3

# def describe_state(state_code)
#   state = @states[state_code.to_state_code.to_sym]
#   "'#{state_code.to_sym}' stands for #{state}. "\
#   "The 4 largest cities in #{state} are: #{@cities[state_code.to_sym].join(', ')}."
# end



# # Task 4

# @taxes = {
#   OR: 0.00,
#   FL: 0.06,
#   CA: 0.075,
#   NY: 0.07,
#   MI: 0.06,
#   MN: 0.06875,
#   NV: 0.0685
# }

# # Task 5

# def calculate_tax(state_code, price)
#   (price + (price * @taxes[state_code])).round(2)
# end

#  # Task 6

# def find_state_for_city(city)
#   @states.each do |key, array|
#     return key if array.include?(city)
#   end
#   "City not found."
# end


# refactored code starts here:


@states = {
  OR: {name: 'Oregon', cities: ['Portland', 'Salem', 'Eugene', 'Gresham'], tax: 0.00},
  FL: {name: 'Florida', cities: ['Jacksonville', 'Miami', 'Tampa', 'St. Petersburg'], tax: 0.06},
  CA: {name: 'California', cities: ['Los Angeles', 'San Diego', 'Santa Clara'], tax: 0.075},
  NY: {name: 'New York', cities: ['New York', 'Buffalo', 'Rochester', 'Yonkers'], tax: 0.07},
  MI: {name: 'Michigan', cities: ['Detroit', 'Grand Rapids', 'Warren', 'Sterling Heights'], tax: 0.06},
  MN: {name: 'Minnesota', cities: ['Minneapolis', 'St. Paul', 'Rochester', 'Bloomington'], tax: 0.06875},
  NV: {name: 'Nevada', cities: ['Las Vegas', 'Henderson', 'Reno', 'North Las Vegas'], tax: 0.0685}
}

# I put exceptions in the methods, so hopefully this won't get accessed.
@states.default = {name: "Unknown", cities: ["Unknown"], tax: "Unknown"}

def describe_state(state_code)
  sym = state_code.to_sym
  state = @states[sym]
  name = state[:name]
  cities = state[:cities]
  
  if @states.include?(sym)
    "'#{sym}' stands for #{name}. "\
      "The #{cities.length} largest cities in #{name} are: #{cities.join(', ')}."
  else
    "State not found."
  end

end

def calculate_tax(state_code, price)
  sym = state_code.to_sym
  state = @states[sym]
  tax = state[:tax]

  if price.is_a? (Numeric)
    return "State not found." unless @states.include?(sym)

    (price + (price * tax)).round(2)
  else
    raise "price is not a number"
  end
end

def find_state_for_city(city)
  @states.each do |key, hash|
    return key if hash[:cities].include?(city)
  end
  "City not found."
end

def tests
  puts describe_state(:CA)
  puts describe_state('NY')
  puts describe_state('MI')
  puts describe_state('HI')

#  puts calculate_tax(:CA, "LLLL")
  puts calculate_tax("NY", 100)
  puts calculate_tax(:MI, 100)
  puts calculate_tax(:MN, 34.75)
  puts calculate_tax('HI', 85)

  puts "Where's Eugene?"
  puts find_state_for_city("Eugene")
  puts "Where's Edugene?"
  puts find_state_for_city("Edugene")
  puts "Where's Las Vegas"
  puts find_state_for_city("Las Vegas")
end

# tests