extends GUINode

var _active : bool = false
var _incVal : int = 0 # incremental value to see the UI update, replace later by real values

# income
var _lower_class_label : Label
var _middle_class_label : Label
var _upper_class_label : Label
var _gold_label : Label
var _total_inc_label : Label

# debt
var _national_bank_label : Label
var _total_funds_label : Label
var _debt_val_label : Label
var _interest_val_label : Label

# costs
var _nat_stock_val_label : Label
var _nat_stock_est_label : Label
var _mil_cost_val_label : Label
var _overseas_cost_val_label : Label
var _ind_sub_val_label : Label
var _admin_efficiency_label : Label
var _exp_val_0_label : Label
var _exp_val_1_label : Label
var _exp_val_2_label : Label
var _exp_val_3_label : Label
var _total_exp_label : Label

# others
var _tariffs_percent_label : Label
var _tariff_val_label : Label
var _diplomatic_balance_label : Label
var _balance_label : Label

const _screen : NationManagement.Screen = NationManagement.Screen.BUDGET

func _ready() -> void:
	GameSingleton.gamestate_updated.connect(_update_info)

	Events.NationManagementScreens.update_active_nation_management_screen.connect(_on_update_active_nation_management_screen)

	add_gui_element("country_budget", "country_budget")

	var close_button : Button = get_button_from_nodepath(^"./country_budget/close_button")
	if close_button:
		close_button.pressed.connect(Events.NationManagementScreens.close_nation_management_screen.bind(_screen))

	# labels
	# income
	_lower_class_label = get_label_from_nodepath(^"./country_budget/tax_0_inc")
	_middle_class_label = get_label_from_nodepath(^"./country_budget/tax_1_inc")
	_upper_class_label = get_label_from_nodepath(^"./country_budget/tax_2_inc")
	_gold_label = get_label_from_nodepath(^"./country_budget/gold_inc") 
	_total_inc_label = get_label_from_nodepath(^"./country_budget/total_inc") 
	# debt
	_national_bank_label = get_label_from_nodepath(^"./country_budget/national_bank_val")
	_total_funds_label = get_label_from_nodepath(^"./country_budget/total_funds_val")
	_debt_val_label = get_label_from_nodepath(^"./country_budget/debt_val")
	_interest_val_label = get_label_from_nodepath(^"./country_budget/interest_val")
	# costs
	_nat_stock_val_label = get_label_from_nodepath(^"./country_budget/nat_stock_val")
	_nat_stock_est_label = get_label_from_nodepath(^"./country_budget/nat_stock_est")
	_mil_cost_val_label = get_label_from_nodepath(^"./country_budget/mil_cost_val")
	_overseas_cost_val_label = get_label_from_nodepath(^"./country_budget/overseas_cost_val")
	_ind_sub_val_label = get_label_from_nodepath(^"./country_budget/ind_sub_val")
	_admin_efficiency_label = get_label_from_nodepath(^"./country_budget/admin_efficiency")
	_exp_val_0_label = get_label_from_nodepath(^"./country_budget/exp_val_0")
	_exp_val_1_label = get_label_from_nodepath(^"./country_budget/exp_val_1")
	_exp_val_2_label = get_label_from_nodepath(^"./country_budget/exp_val_2")
	_exp_val_3_label = get_label_from_nodepath(^"./country_budget/exp_val_3")
	_total_exp_label = get_label_from_nodepath(^"./country_budget/total_exp")
	# others
	_tariffs_percent_label = get_label_from_nodepath(^"./country_budget/tariffs_percent")
	_tariff_val_label = get_label_from_nodepath(^"./country_budget/tariff_val")
	_diplomatic_balance_label = get_label_from_nodepath(^"./country_budget/diplomatic_balance")
	_balance_label = get_label_from_nodepath(^"./country_budget/balance")
	
	# sliders
	# income
	var _lower_class_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/tax_0_slider")
	var _middle_class_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/tax_1_slider")
	var _upper_class_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/tax_2_slider")
	# costs
	var _land_stockpile_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/land_stockpile_slider")
	var _naval_stockpile_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/naval_stockpile_slider")
	var _projects_stockpile_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/projects_stockpile_slider")
	var _exp_0_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/exp_0_slider")
	var _exp_1_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/exp_1_slider")
	var _exp_2_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/exp_2_slider")
	var _exp_3_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/exp_3_slider")
	# others
	var _tariff_slider : GUIScrollbar = get_gui_scrollbar_from_nodepath(^"./country_budget/tariff_slider")
	
	# debt buttons
	var _tab_takenloans_button : Button = get_button_from_nodepath(^"./country_budget/tab_takenloans")
	var _tab_givenloans_button : Button = get_button_from_nodepath(^"./country_budget/tab_givenloans")
	var _debt_sort_country_button : Button = get_button_from_nodepath(^"./country_budget/debt_sort_country")
	var _debt_sort_amount_button : Button = get_button_from_nodepath(^"./country_budget/debt_sort_amount")
	var _take_loan_button : Button = get_button_from_nodepath(^"./country_budget/take_loan")
	var _repay_loan_button : Button = get_button_from_nodepath(^"./country_budget/repay_loan")
	
	# charts
	var _lower_class_chart : GFXPieChartTexture = get_gfx_pie_chart_texture_from_nodepath(^"./country_budget/chart_0")
	var _middle_class_chart : GFXPieChartTexture = get_gfx_pie_chart_texture_from_nodepath(^"./country_budget/chart_1")
	var _upper_class_chart : GFXPieChartTexture = get_gfx_pie_chart_texture_from_nodepath(^"./country_budget/chart_2")
	var _debt_chart : GFXPieChartTexture = get_gfx_pie_chart_texture_from_nodepath(^"./country_budget/chart_debt")
	
	if _tab_takenloans_button:
		_tab_takenloans_button.pressed.connect(_switch_loans_tab.bind(true))
	if _tab_givenloans_button:
		_tab_givenloans_button.pressed.connect(_switch_loans_tab.bind(false))
	if _debt_sort_country_button:
		_debt_sort_country_button.pressed.connect(_sort_loans.bind(true))
	if _debt_sort_amount_button:
		_debt_sort_amount_button.pressed.connect(_sort_loans.bind(false))
	if _take_loan_button:
		_take_loan_button.pressed.connect(_take_loan)
	if _repay_loan_button:
		_repay_loan_button.pressed.connect(_repay_loan)
	
	# -------------------------------------------------------------------------
	# --------------- substitute for real values and operations ---------------
	# -------------------------------------------------------------------------
	# income
	if _lower_class_slider and _lower_class_label:
		_lower_class_slider.value_changed.connect(func(value : int) -> void: _lower_class_label.text = "%s£" % value)
		_lower_class_slider.emit_value_changed()
	if _middle_class_slider and _middle_class_label:
		_middle_class_slider.value_changed.connect(func(value : int) -> void: _middle_class_label.text = "%s£" % value)
		_middle_class_slider.emit_value_changed()
	if _upper_class_slider and _upper_class_label:
		_upper_class_slider.value_changed.connect(func(value : int) -> void: _upper_class_label.text = "%s£" % value)
		_upper_class_slider.emit_value_changed()
	# expenses
	if _land_stockpile_slider and _mil_cost_val_label:
		_land_stockpile_slider.value_changed.connect(func(value : int) -> void: _mil_cost_val_label.text = "%s£" % value)
		_land_stockpile_slider.emit_value_changed()
	if _naval_stockpile_slider and _overseas_cost_val_label:
		_naval_stockpile_slider.value_changed.connect(func(value : int) -> void: _overseas_cost_val_label.text = "%s£" % value)
		_naval_stockpile_slider.emit_value_changed()
	if _projects_stockpile_slider:
		if _nat_stock_val_label:
			_projects_stockpile_slider.value_changed.connect(func(value : int) -> void: _nat_stock_val_label.text = "%s£" % value)
		if _nat_stock_est_label:
			_projects_stockpile_slider.value_changed.connect(func(value : int) -> void: _nat_stock_est_label.text = "%s£" % value)
		_projects_stockpile_slider.emit_value_changed()
	if _exp_0_slider and _exp_val_0_label:
		_exp_0_slider.value_changed.connect(func(value : int) -> void: _exp_val_0_label.text = "%s£" % value)
		_exp_0_slider.emit_value_changed()
	if _exp_1_slider and _exp_val_1_label:
		_exp_1_slider.value_changed.connect(func(value : int) -> void: _exp_val_1_label.text = "%s£" % value)
		_exp_1_slider.emit_value_changed()
	if _exp_2_slider and _exp_val_2_label:
		_exp_2_slider.value_changed.connect(func(value : int) -> void: _exp_val_2_label.text = "%s£" % value)
		_exp_2_slider.emit_value_changed()
	if _exp_3_slider and _exp_val_3_label:
		_exp_3_slider.value_changed.connect(func(value : int) -> void: _exp_val_3_label.text = "%s£" % value)
		_exp_3_slider.emit_value_changed()
	if _exp_1_slider and _admin_efficiency_label:
		_exp_1_slider.value_changed.connect(func(value : int) -> void: _admin_efficiency_label.text = "%s%%" % value)	
		_exp_1_slider.emit_value_changed()
	# others
	if _tariff_slider:
		if _tariff_val_label:
			_tariff_slider.value_changed.connect(func(value : int) -> void: _tariff_val_label.text = "%s£" % value)
		if _tariffs_percent_label:
			_tariff_slider.value_changed.connect(func(value : int) -> void: _tariffs_percent_label.text = "%s%%" % value)
		_tariff_slider.emit_value_changed()
	# charts
	#if _x_chart:
	#	_x_chart.set_slices_array(...)
	
	# -------------------------------------------------------------------------
	
	_update_info()

func _notification(what : int) -> void:
	match what:
		NOTIFICATION_TRANSLATION_CHANGED:
			_update_info()

func _on_update_active_nation_management_screen(active_screen : NationManagement.Screen) -> void:
	_active = active_screen == _screen
	_update_info()

func _update_info() -> void:
	# TODO - remove _incVal and link the true data with the UI
	_incVal += 1
	
	if _active:
		_gold_label.text  = "%s£" % (_incVal - (_incVal % 7))
		_total_inc_label.text = "%s£" % _incVal
		_national_bank_label.text = "%s£" % (_incVal * 2)
		_total_funds_label.text = "%s£" % (_incVal * 3)
		_debt_val_label.text = "%s£" % (_incVal * 4)
		_interest_val_label.text = "%s£" % (_incVal * 5)
		_ind_sub_val_label.text = "%s£" % (_incVal * 6)
		_diplomatic_balance_label.text = "%s£" % (_incVal * 8)
		_total_exp_label.text = "%s£" % (_incVal + 1)
		_balance_label.text = "%s£" % _incVal
		if _incVal > 0:
			_balance_label.add_theme_color_override("font_color", Color.DARK_GREEN)
		elif _incVal < 0:
			_balance_label.add_theme_color_override("font_color", Color.RED) 
		else:
			_balance_label.add_theme_color_override("font_color", Color.BLACK)
		show()
	else:
		hide()

func _switch_loans_tab(taken_loans : bool) -> void:
	# TODO - code the necessary logic
	var _variable_so_that_the_function_compiles # remove later
	#if taken_loans:
	#else: # given loans
	
func _sort_loans(sort_by_country : bool) -> void:
	# TODO - code the necessary logic
	var _variable_so_that_the_function_compiles # remove later
	#if sort_by_country:
	#else: # sort by amount
	
func _take_loan() -> void:
	# TODO - code the necessary logic
	var _variable_so_that_the_function_compiles # remove later
	
func _repay_loan() -> void:
	# TODO - code the necessary logic
	var _variable_so_that_the_function_compiles # remove later