--Central to add all player modifiers together.
--Will overwrite character stats from other mods.

local Global = require "utils.global"

local this = {}

Global.register(this, function(t) this = t end)

local Public = {}

function Public.get_table()
	return this
end

local modifiers = {
	"character_build_distance_bonus",
	"character_crafting_speed_modifier",
	"character_health_bonus",
	"character_inventory_slots_bonus",
	"character_item_drop_distance_bonus",
	"character_item_pickup_distance_bonus",
	"character_loot_pickup_distance_bonus",
	"character_mining_speed_modifier",
	"character_reach_distance_bonus",
	"character_resource_reach_distance_bonus",
	"character_running_speed_modifier",
}

function Public.update_player_modifiers(player)
	for _, modifier in pairs(modifiers) do
		local sum_value = 0
		for _, value in pairs(this[player.index][modifier]) do
			sum_value = sum_value + value
		end
		if player.character then
			player[modifier] = sum_value
		end
	end
end

local function on_player_joined_game(event)
	if this[event.player_index] then 
		Public.update_player_modifiers(game.players[event.player_index])
		return
	end
	this[event.player_index] = {}
	for _, modifier in pairs(modifiers) do
		this[event.player_index][modifier] = {}
	end
end

local function on_player_respawned(event) 
	Public.update_player_modifiers(game.players[event.player_index])
end

local Event = require 'utils.event'
Event.add(defines.events.on_player_joined_game, on_player_joined_game)
Event.add(defines.events.on_player_respawned, on_player_respawned)

return Public