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locker-reservation-controller.rb
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locker-reservation-controller.rb
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require_relative 'locker-reservation-view'
require_relative 'locker'
class LockerReservationController
def initialize
# Although not all instance variables need to be initialized in this method, I place them here so that the developer can see all the instance variables that are used for this controller.
@reserved_lockers = {}
@vacant_lockers = {}
@locker_sizes_smallest_first = []
@available_user_actions = ['reserve','return','exit']
# Locker ids will be assigned incrementally starting from 1
@highest_id_assigned_to_locker = 0
set_up_lockers
end
def set_up_lockers
# locker_config_from_user consists of all locker sizes and their quantities
locker_config_from_user = LockerReservationView.get_locker_config
locker_config_arr = locker_config_from_user.split
set_vacant_lockers_and_sizes!(locker_config_arr)
end
def set_vacant_lockers_and_sizes!(locker_config_arr)
# As instructed to the user in the view, locker_config_arr information is delimited by commas
locker_config_arr.each do |locker_type|
locker_info = locker_type.split(',')
locker_size = locker_info[0]
locker_size_qty = locker_info[1].to_i
# locker_config_arr argument lists lockers already sorted from smallest to largest in size
@locker_sizes_smallest_first.push(locker_size)
populate_vacant_lockers!({locker_size: locker_size, locker_size_qty: locker_size_qty})
end
end
def populate_vacant_lockers!(locker_info_hash)
arr_of_lockers =
Array((@highest_id_assigned_to_locker+1)..(@highest_id_assigned_to_locker+locker_info_hash[:locker_size_qty])).map do |id|
Locker.new({
id: id,
size: locker_info_hash[:locker_size]
})
end
@vacant_lockers[locker_info_hash[:locker_size]] = arr_of_lockers
@highest_id_assigned_to_locker += locker_info_hash[:locker_size_qty]
end
def determine_user_action
user_action = LockerReservationView.get_user_action_from(@available_user_actions)
case user_action
when 'reserve'
reserve_locker
when 'return'
return_locker!
when 'exit'
end
end
def reserve_locker
locker_size_to_reserve = LockerReservationView.get_smallest_size_for_reservation
locker_size_to_reserve = get_smallest_vacant_locker(locker_size_to_reserve)
if locker_size_to_reserve
reserve_locker!(locker_size_to_reserve)
else
LockerReservationView.display_no_vacancy_error
end
determine_user_action
end
def get_smallest_vacant_locker(locker_size)
size_array_index = @locker_sizes_smallest_first.index(locker_size)
@locker_sizes_smallest_first[size_array_index...@locker_sizes_smallest_first.length].find do |size|
@vacant_lockers[size].any?
end
end
def reserve_locker!(size)
locker_to_reserve = @vacant_lockers[size].pop
locker_to_reserve.is_reserved = true
@reserved_lockers[locker_to_reserve.id] = locker_to_reserve
LockerReservationView.print_locker_ticket(locker_to_reserve)
end
def return_locker!
locker_id_to_return = LockerReservationView.get_locker_id_for_return
locker_to_return = @reserved_lockers.delete(locker_id_to_return)
locker_to_return.is_reserved = false
@vacant_lockers[locker_to_return.size].push(locker_to_return)
determine_user_action
end
end