--[[
FDDA backpack addon script
Author: Feel_Fried
Anims author: Blindside
20.08.2022
--]]
local ini_eff = {}
local fov_prev,active_slot,item_after_backpack,backpack_open_flag,crouch_value,crouching,ea_force_inventory_close
local anim_enabled = true
local ea_debug = false
local crouch_toggle = true
ini_eff = ini_file("items\\items\\ea_addon_backpack.ltx")
local skip_anims = {
	["outfit"] = true,
	["helm"] = true,
	["disassemble_cloth_fast"] = true,
	["disassemble_metal_fast"] = true,
	["lead_box_dummy"] = true,
	["container_tool_lead_box_dummy"] = true,
	["af_aac_dummy"] = true,
	["af_aam_dummy"] = true,
	["af_iam_dummy"] = true,
	["container_tool_af_aac_dummy"] = true,
	["container_tool_af_aam_dummy"] = true,
	["container_tool_af_iam_dummy"] = true,
	["package_content"] = true,
}

local bool_to_int = {
	[true] = 1,
	[false] = 0,
}

function backpack_m_open(name)
	if enhanced_animations.used_item then return end
	if not db.actor or not db.actor:alive() then
		return
	end
	if name == "inventory" then
		item_use_flag = nil
		backpack_open_flag = true
		backpack_open()
	end
end

function a_crouch()
	if crouch_toggle then
		level.press_action(bind_to_dik(key_bindings.kCROUCH))
		level.release_action(bind_to_dik(key_bindings.kCROUCH))
	end
end

function backpack_m_close(name)
	if name ~="UIInventory" then return end
	if ea_force_inventory_close then
		if ea_debug then
			printf("force found")
		end
		return
	end

	if active_slot then
		item_after_backpack = true
	end

	if backpack_open_flag == nil then return end
	db.actor:hide_weapon()
	if fov_prev then
		get_console():execute("g_crouch_toggle "..bool_to_int[crouch_value] or get_console_cmd(2, "g_crouch_toggle"))
		exec_console_cmd("hud_fov " .. fov_prev)
		fov_prev = nil
		if (crouch_value and not crouching) or not crouch_value  then
			a_crouch()
		end
	end

	if enhanced_animations.used_item then
		backpack_open_flag = nil
		return
	end

	if not db.actor or not db.actor:alive() then
		return
	end

	if ea_debug then
		printf("inventory close")
	end
	backpack_open_flag = nil
	if item_use_flag then
		if ea_debug then
			printf("item was used before closing backpack")
		end
		game.stop_hud_motion()
		call_my_slot_back()
		item_use_flag = nil
		return
	end
	if ea_debug then
		printf("called backpack close anim")
	end
	backpack_close()
end

local originalPIF = actor_effects.play_item_fx
function actor_effects.play_item_fx(item)
	originalPIF(item)
	if skip_anims[item] and backpack_open_flag then
		item_use_flag = true
		if ea_debug then
			printf("item_skiped")
	 	end
	end
	if ea_debug then
		printf(item)
	end
end

local originalUIV = ui_pda_npc_tab.use_view
function ui_pda_npc_tab.use_view(obj)
	if not anim_enabled then
		originalUIV(obj)
		return
	end
	local p = obj:parent()
	if not (p and p:id() == AC_ID) then
		return
	end
	active_slot = nil
	item_use_flag = nil
	backpack_open_flag = nil
	item_after_backpack = nil
	db.actor:hide_weapon()
	if fov_prev then
		get_console():execute("g_crouch_toggle "..bool_to_int[crouch_value] or get_console_cmd(2, "g_crouch_toggle"))
		exec_console_cmd("hud_fov " .. fov_prev)
		fov_prev = nil
		if (crouch_value and not crouching) or not crouch_value  then
			a_crouch()
		end
	end
	game.stop_hud_motion()
	ea_force_inventory_close = true
	originalUIV(obj)
end

function backpack_open()
	if IsMoveState("mcClimb") then
		actor_menu.set_msg(1, game.translate_string("st_EA_ladder_item_not_allowed"),3)
		backpack_open_flag = nil
		return
	end
	crouch_value = get_console_cmd(1, "g_crouch_toggle")
	get_console():execute("g_crouch_toggle 1")
	crouching = IsMoveState('mcCrouch')
	if ea_debug then
		printf("crouching = "..bool_to_int[crouching])
	end
	if (crouch_value and not crouching) or not crouch_value  then
		a_crouch()
	end
	active_slot = db.actor:active_slot()
	det_active = db.actor:active_detector() or nil
	level.disable_input()
	backpack_faction = character_community(db.actor):sub(7)
	enhanced_animations.used_item = "backpack_open" .. "_" .. backpack_faction
	enhanced_animations.anim_section = ini_eff:r_string_ex(enhanced_animations.used_item, "anm")
	enhanced_animations.anim_prepare()
end

function backpack_close()
	enhanced_animations.used_item = "backpack_close" .. "_" .. backpack_faction
	enhanced_animations.anim_section = ini_eff:r_string_ex(enhanced_animations.used_item, "anm")
	enhanced_animations.anim_prepare()
end

function EA_anim_stop(used_item)
	if used_item:sub(1,13) == "backpack_open" then
		db.actor:restore_weapon()
		fov_prev = axr_main.config:r_value("temp", "fov_value", 2)
		fov_anim_manager.change_fov(0.45)
		idle = "item_ea_backpack_open_" .. backpack_faction  .. "_" .. "hud"
		game.play_hud_motion(2, idle, "anm_ea_idle", false, 1)
		level.enable_input()
		ea_invent_flag = true
		RemoveTimeEvent("ea_slot_returner", "call_my_slot_back")
		ui_inventory.start("inventory")
		game.only_allow_movekeys(false)
	end
end

function ea_on_item_use(used_item,tm)
	if used_item:sub(1,14) == "backpack_close" then
		CreateTimeEvent("ea_b_slot_returner", "b_call_my_slot_back", (tm + 0.55), call_my_slot_back)
		return
	end
	if item_after_backpack then
		CreateTimeEvent("ea_b_slot_returner", "b_call_my_slot_back", (tm + 0.3), call_my_slot_back)
		item_after_backpack = nil
	end
end

function call_my_slot_back()
	if det_active and db.actor:item_in_slot(9) then
		db.actor:item_in_slot(9):switch_state(1)
	end
	det_active = nil
	db.actor:activate_slot(active_slot or 0)
	active_slot = nil
	item_after_backpack = nil
	return true
end


local originalUIinvenory_start =ui_inventory.start
function ui_inventory.start(mode, obj)
	originalUIinvenory_start(mode, obj)
	if mode == "inventory" and ea_invent_flag == nil and anim_enabled then
		ea_force_inventory_close = true
		ui_inventory.hide_hud_inventory()
		return
	end
	if ea_invent_flag then
		ea_invent_flag = nil
		ea_force_inventory_close = nil
	end
end

function actor_on_item_use(item)
	if item:section() ~= "items_anm_dummy" then item_use_flag = true end
end

function activate()
	RegisterScriptCallback("ActorMenu_on_before_init_mode",backpack_m_open)
	RegisterScriptCallback("GUI_on_hide",backpack_m_close)
	RegisterScriptCallback("actor_on_item_use",actor_on_item_use)
	ea_callbacks.EA_RegisterScriptCallback("ea_on_item_anim_stop",EA_anim_stop)
	ea_callbacks.EA_RegisterScriptCallback("ea_on_item_use",ea_on_item_use)
end

function deactivate()
	UnregisterScriptCallback("ActorMenu_on_before_init_mode",backpack_m_open)
	UnregisterScriptCallback("GUI_on_hide",backpack_m_close)
	UnregisterScriptCallback("actor_on_item_use",actor_on_item_use)
	ea_callbacks.EA_UnregisterScriptCallback("ea_on_item_anim_stop",EA_anim_stop)
	ea_callbacks.EA_UnregisterScriptCallback("ea_on_item_use",ea_on_item_use)
end

function on_game_start()
	RegisterScriptCallback("on_option_change", loadsettings)
	loadsettings()
end

function loadsettings()
	if ui_mcm then
		anim_enabled = ui_mcm.get("EA_settings/enable_backpack_addon")
		crouch_toggle = ui_mcm.get("EA_settings/enable_crouch_toggle_backpack_addon")
		ea_debug = ui_mcm.get("EA_settings/ea_debug")
	end
	if anim_enabled then
		activate()
	else
		deactivate()
	end
end