require "spec"
require "./db-cars.cr"

class DODB::Trigger::Virtual(V) < DODB::Trigger(V)
	# Indexes a value, used for **internal operations**.
	def index(key : String, value : V)
		puts "index: key #{key}, value #{value}"
	end

	# Removes the index of a value, used for **internal operations**.
	def deindex(key : String, value : V)
		puts "deindex: key #{key}, value #{value}"
	end

	# Verifies whether a new value will create a collision with the index of
	# currently stored value, used for **internal operations**.
	def check!(key : String, value : V, old_value : V?)
		puts "check!: key #{key}, value #{value}, old_value #{old_value}"
		false
	end

	# Name of the index, such as *id* or *color* for example.
	# This is an arbitrary value, mostly to create the index directory.
	def name : String
		name = "some name"
		puts "name: #{name}"
		name
	end

	# Directory where the values will be written.
	def trigger_directory : String
		dir = "something"
		puts "trigger directory: #{dir}"
		dir
	end

	# Removes all the index entries, removes the `#trigger_directory` by default.
	def nuke_trigger
		puts "nuke trigger"
	end
end

car0 = Car.new "Corvet-0", "red", [] of String
car1 = Car.new "Corvet-1", "red", [] of String
car2 = Car.new "Corvet-2", "red", [] of String
car3 = Car.new "Corvet-3", "red", [] of String

db = SPECDB::Common(Car).new "test-triggers", 2
db.triggers << DODB::Trigger::Virtual(Car).new
db << car0
db.delete 0
db << car0
db << car1
carm = car1
carm.name = "modified"
db << carm
db << car2
db << car3