local modname = minetest.get_current_modname()
local S = minetest.get_translator(modname)
local mcl_log = mcl_util.make_mcl_logger("mcl_logging_minecarts", "Minecarts")
local mod = mcl_minecarts

-- Imports
local PASSENGER_ATTACH_POSITION = mod.PASSENGER_ATTACH_POSITION

local function activate_normal_minecart(self)
	detach_driver(self)

	-- Detach passenger
	if self._passenger then
		local mob = self._passenger.object
		mob:set_detach()
	end
end

mod.register_minecart({
	itemstring = "mcl_minecarts:minecart",
	craft = {
		output = "mcl_minecarts:minecart",
		recipe = {
			{"mcl_core:iron_ingot", "", "mcl_core:iron_ingot"},
			{"mcl_core:iron_ingot", "mcl_core:iron_ingot", "mcl_core:iron_ingot"},
		},
	},
	entity_id = "mcl_minecarts:minecart",
	description = S("Minecart"),
	tt_helop = S("Vehicle for fast travel on rails"),
	long_descp = S("Minecarts can be used for a quick transportion on rails.") .. "\n" ..
		S("Minecarts only ride on rails and always follow the tracks. At a T-junction with no straight way ahead, they turn left. The speed is affected by the rail type."),
		S("You can place the minecart on rails. Right-click it to enter it. Punch it to get it moving.") .. "\n" ..
		S("To obtain the minecart, punch it while holding down the sneak key.") .. "\n" ..
		S("If it moves over a powered activator rail, you'll get ejected."),
	initial_properties = {
		mesh = "mcl_minecarts_minecart.b3d",
		textures = {"mcl_minecarts_minecart.png"},
	},
	icon = "mcl_minecarts_minecart_normal.png",
	drop = {"mcl_minecarts:minecart"},
	on_rightclick = function(self, clicker)
		-- Make sure we have a player
		if not clicker or not clicker:is_player() then return end

		local player_name = clicker:get_player_name()
		if self._driver or clicker:get_player_control().sneak then return end

		-- Update cart information
		self._driver = player_name
		self._start_pos = self.object:get_pos()

		-- Update player information
		local uuid = self._staticdata.uuid
		local playerinfo = mcl_playerinfo[player_name]
		if playerinfo and self._staticdata then
			playerinfo.attached_to = uuid
		end
		mcl_player.player_attached[player_name] = true
		minetest.log("action", player_name.." entered minecart #"..tostring(uuid).." at "..tostring(self._start_pos))

		-- Attach the player object to the minecart
		clicker:set_attach(self.object, "", vector.new(1,-1.75,-2), vector.new(0,0,0))
		minetest.after(0.2, function(name)
			local player = minetest.get_player_by_name(name)
			if player then
				mcl_player.player_set_animation(player, "sit" , 30)
				player:set_eye_offset(vector.new(0,-5.5,0), vector.new(0,-4,0))
				mcl_title.set(clicker, "actionbar", {text=S("Sneak to dismount"), color="white", stay=60})
			end
		end, player_name)
	end,
	on_activate_by_rail = activate_normal_minecart,
	_mcl_minecarts_on_step = function(self, dtime)
		-- Grab mob
		if math.random(1,20) > 15 and not self._passenger then
			local mobsnear = minetest.get_objects_inside_radius(self.object:get_pos(), 1.3)
			for n=1, #mobsnear do
				local mob = mobsnear[n]
				if mob then
					local entity = mob:get_luaentity()
					if entity and entity.is_mob then
						self._passenger = entity
						mob:set_attach(self.object, "", PASSENGER_ATTACH_POSITION, vector.zero())
						break
					end
				end
			end
		elseif self._passenger then
			local passenger_pos = self._passenger.object:get_pos()
			if not passenger_pos then
				self._passenger = nil
			end
		end
	end
})