-- creative_regions mod by h3ndrik

creative_regions = {}


areas_owner_privs = minetest.settings:get("creative_regions.owner_privs") or "+creative, +fast, +fly"
areas_guest_privs = minetest.settings:get("creative_regions.guest_privs") or "-fly, -fast"
noregion_privs = minetest.settings:get("creative_regions.noregion_privs") or "-creative, +fast, -fly"
default_privs = minetest.settings:get("creative_regions.default_privs") or "+creative, +fast, +fly"


creative_regions.modpath = minetest.get_modpath("creative_regions")
dofile(creative_regions.modpath.."/region.lua")
dofile(creative_regions.modpath.."/player.lua")
dofile(creative_regions.modpath.."/chatcommands.lua")
dofile(creative_regions.modpath.."/items.lua")
dofile(creative_regions.modpath.."/mod_areas.lua")


function creative_regions:update_player(player)
	local name = player:get_player_name()
	local pos = vector.round(player:get_pos())

	local pmeta = player:get_meta()
--	pmeta:mark_as_private("creative_regions.active_regions")

	local current_regions_size = {}
	local player_active_region_str = ""
	local areas_owner = false
	local areas_guest = false
	local areas_open = false
	local areas_individual_override = false

	-- skip for players with protection_bypass
	if minetest.check_player_privs(name, { protection_bypass=true }) then
		return
	end

	-- find active regions
	local current_regions = self.astore:get_areas_for_pos(pos, true, true)
	for astore_id, astore_area in pairs( current_regions ) do
		local id = "r"..tostring(astore_id)
		local size = creative_regions:get_region_size(astore_area)
		table.insert(current_regions_size, { ["id"]=id, ["size"]=size })
	end

	-- find active areas from areas mod
	if minetest.get_modpath("areas") then
		local current_areas = areas:getAreasAtPos(pos)
		for areas_id, areas_area in pairs( current_areas ) do
			local id = "a"..tostring(areas_id)
			local size = creative_regions:get_areas_area_size(areas_area)
			table.insert(current_regions_size, { ["id"]=id, ["size"]=size })
			if areas_area.owner == name then
				areas_owner = true
			elseif areas_area.open then
				areas_open = true
			else
				areas_guest = true
				--continue
			end
		end
	end

	-- calculate privs starting with biggest region and overwriting conscutively
	local new_privs_table = {}
	creative_regions:add_privs_from_string(new_privs_table, noregion_privs)

	table.sort(current_regions_size, function(a,b) return a["size"] > b["size"] end)

	for _, region in ipairs(current_regions_size) do
		player_active_region_str = player_active_region_str .. "," .. region.id
		if creative_regions.region_privs[region.id] then
			creative_regions:add_privs_from_string(new_privs_table, creative_regions.region_privs[region.id])
			if string.sub(region.id, 1, 1) == "a" then
				areas_individual_override = true
			end
		elseif string.sub(region.id, 1, 1) == "r" then
			creative_regions:add_privs_from_string(new_privs_table, default_privs)
		elseif string.sub(region.id, 1, 1) == "a" then
			if not areas_individual_override then
				creative_regions:add_privs_from_string(new_privs_table, areas_guest_privs)
			end
		end
	end

	-- overwrite
	if areas_owner or areas_open then
		creative_regions:add_privs_from_string(new_privs_table, areas_owner_privs)
	end

	-- did the regions change? update
	local player_last_active_region_str = pmeta:get_string("creative_regions.active_regions") or ""
	if player_active_region_str ~= player_last_active_region_str then
		creative_regions:player_enter_region(player, new_privs_table)
		pmeta:set_string("creative_regions.active_regions", player_active_region_str)
	end

--	print(dump(pmeta:to_table()))
end


creative_regions:load_regions()

local timer = 0
minetest.register_globalstep(function(dtime)
	timer = timer + dtime
	if timer >= 1 then
		for _, player in pairs(minetest.get_connected_players()) do
			creative_regions:update_player(player)
		end
	end
end)