local Memory = require 'maps.pirates.memory'
local Math = require 'maps.pirates.math'
local Balance = require 'maps.pirates.balance'
local Common = require 'maps.pirates.common'
local CoreData = require 'maps.pirates.coredata'
local Utils = require 'maps.pirates.utils_local'
local inspect = require 'utils.inspect'.inspect

local Public = {}
local enum = {
	SEA = 'Sea',
	ISLAND = 'Island',
	CROWSNEST = 'Crowsnest',
	LOBBY = 'Lobby',
	HOLD = 'Hold',
	CABIN = 'Cabin',
	CHANNEL = 'Channel',
	DOCK = 'Dock',
}
Public.enum = enum


function Public.encode_surface_name(crewid, destination_index, type, subtype) -- crewid=0 is shared surfaces
	local str = ''
	if subtype then
		str = string.format('%03d-%03d-%s-%s', crewid, destination_index, type, subtype) --uses the fact that type and subtype resolve to strings
	else
		str = string.format('%03d-%03d-%s', crewid, destination_index, type)
	end
	return str
end

function Public.decode_surface_name(name)
	local crewid = tonumber(string.sub(name, 1, 3))
	local destination_index = tonumber(string.sub(name, 5, 7))
	local type = nil
	local subtype = nil
	
	local substring = string.sub(name, 9, -1)
	local pull = {}
	for a, b in string.gmatch(substring, "(%w+)-(%w+)") do
		pull[1] = a
		pull[2] = b
	end
	if #pull == 0 then
		type = substring
	elseif #pull == 2 then
		type = pull[1]
		subtype = pull[2]
	end
	return {crewid = crewid, destination_index = destination_index, type = type, subtype = subtype}
end


function Public.fetch_iconized_map(destination)
	local type = destination.type

	if type == Public.enum.LOBBY then
		return CoreData.Lobby_iconized_map()
	elseif type == Public.enum.DOCK then
		return CoreData.Dock_iconized_map()
	else
		return destination.iconized_map
	end
end

return Public