extends MarginContainer

## itch.io plugin settings screen
##
## Uses OpenGamepadUI's themed widget set (StatusPanel, ComponentTextInput,
## Toggle, CardButton, Dropdown) for consistent look with the rest of the
## settings UI.

const ItchClient := preload("res://plugins/itch/core/itch_client.gd")
var settings_manager := load("res://core/global/settings_manager.tres") as SettingsManager
var notification_manager := load("res://core/global/notification_manager.tres") as NotificationManager
const icon := preload("res://plugins/itch/assets/itch.svg")

@onready var status := $%Status as StatusPanel
@onready var connected_status := $%ConnectedStatus as StatusPanel
@onready var logged_in_status := $%LoggedInStatus as StatusPanel
@onready var login_method := $%LoginMethod as Dropdown
@onready var api_key_box := $%ApiKeyInput as ComponentTextInput
@onready var username_box := $%UsernameInput as ComponentTextInput
@onready var password_box := $%PasswordInput as ComponentTextInput
@onready var save_button := $%SaveButton as CardButton
@onready var logout_button := $%LogoutButton as CardButton
@onready var filter_check := $%FilterUnsupported as Toggle
@onready var show_purchases_check := $%ShowPurchases as Toggle
@onready var collections_container: VBoxContainer = $%CollectionsContainer

@onready var itch: ItchClient = get_tree().get_first_node_in_group("itch_client")

var _collection_checks: Dictionary = {}


func _ready() -> void:
	# Configure status indicators
	status.status = status.STATUS.CANCELLED
	status.color = "red"
	var set_running := func():
		if not itch.client_started:
			return
		status.status = status.STATUS.ACTIVE
		status.color = "green"
	if itch.client_started:
		set_running.call()
	itch.bootstrap_finished.connect(set_running)

	# Configure connected status
	connected_status.status = connected_status.STATUS.ACTIVE
	if itch.state != itch.STATE.BOOT:
		connected_status.color = "green"
	itch.client_ready.connect(func():
		connected_status.color = "green"
	)

	# Configure login status
	var update_login_status := func(login_status: ItchClient.LOGIN_STATUS):
		if login_status != ItchClient.LOGIN_STATUS.OK:
			logged_in_status.status = logged_in_status.STATUS.ACTIVE
			logged_in_status.color = "gray"
			return
		logged_in_status.status = logged_in_status.STATUS.CLOSED
		logged_in_status.color = "green"
	itch.logged_in.connect(update_login_status)
	itch.logged_in.connect(_on_login)

	# Configure login method dropdown
	login_method.add_item("API Key", 0)
	login_method.add_item("Username & Password", 1)
	login_method.selected = 0

	# Load saved settings
	var api_key := settings_manager.get_value("plugin.itch", "api_key", "") as String
	api_key_box.text = api_key
	api_key_box.secret = true

	var saved_method: int = settings_manager.get_value("plugin.itch", "login_method", 0) as int
	login_method.select(saved_method)
	_on_login_method_changed(saved_method)

	var username := settings_manager.get_value("plugin.itch", "username", "") as String
	username_box.text = username

	filter_check.button_pressed = settings_manager.get_value("plugin.itch", "filter_unsupported", true) as bool
	show_purchases_check.button_pressed = settings_manager.get_value("plugin.itch", "show_purchases", true) as bool

	# Connect signals
	save_button.pressed.connect(_on_save_button)
	logout_button.pressed.connect(_on_logout_button)
	login_method.item_selected.connect(_on_login_method_changed)
	filter_check.toggled.connect(_on_filter_toggled)
	show_purchases_check.toggled.connect(_on_show_purchases_toggled)

	# Build collection checkboxes once we're logged in.
	itch.logged_in.connect(_populate_collections.bind(), CONNECT_ONE_SHOT)


func _on_login(login_status: ItchClient.LOGIN_STATUS, _profile: Dictionary) -> void:
	var notify := Notification.new("")
	notify.icon = icon
	if login_status == ItchClient.LOGIN_STATUS.OK:
		notify.text = "Successfully logged in to itch.io"
	else:
		notify.text = "itch.io login failed. Double check your credentials."
	notification_manager.show(notify)


func _on_login_method_changed(idx: int) -> void:
	# API key mode: show API key input, hide user/pass.
	# Password mode: show user/pass, hide API key.
	var is_api := idx == 0
	api_key_box.visible = is_api
	username_box.visible = not is_api
	password_box.visible = not is_api


func _on_save_button() -> void:
	var method: int = login_method.selected
	settings_manager.set_value("plugin.itch", "login_method", method)

	if method == 0:
		# API key login
		settings_manager.set_value("plugin.itch", "username", "")
		var api_key: String = api_key_box.text.strip_edges()
		settings_manager.set_value("plugin.itch", "api_key", api_key)
		if api_key == "":
			return
		itch.login_with_api_key(api_key)
	else:
		# Username/password login
		var uname: String = username_box.text.strip_edges()
		var password: String = password_box.text
		settings_manager.set_value("plugin.itch", "username", uname)
		if uname == "" or password == "":
			return
		itch.login_with_password(uname, password)


func _on_logout_button() -> void:
	var method: int = login_method.selected

	# Clear saved credentials
	if method == 0:
		settings_manager.set_value("plugin.itch", "api_key", "")
		api_key_box.text = ""
	else:
		settings_manager.set_value("plugin.itch", "username", "")
		username_box.text = ""
		password_box.text = ""

	# Logout from butlerd
	itch.logout()

	var notify := Notification.new("Logged out of itch.io")
	notify.icon = icon
	notification_manager.show(notify)


## Fetches the user's collections and builds a checkbox for each one.
func _populate_collections(_status: ItchClient.LOGIN_STATUS, _profile: Dictionary) -> void:
	if not itch.is_logged_in:
		return
	var profile_id: int = itch.profile.get("user", {}).get("id", itch.profile.get("id", 0))
	var res := await itch._rpc_call("Fetch.ProfileCollections", {"profileId": profile_id})
	if "error" in res:
		return
	var collections: Array = res.get("items", [])

	# Load saved visibility state.
	var hidden: Dictionary = settings_manager.get_value("plugin.itch", "hidden_collections", {}) as Dictionary

	# Clear old checkboxes.
	for child in collections_container.get_children():
		child.queue_free()
	_collection_checks.clear()

	for c in collections:
		var collection: Dictionary = c
		var col_name: String = collection.get("title", "Collection " + str(collection.get("id", "")))
		var col_id: String = str(collection.get("id", 0))
		var check := CheckBox.new()
		check.text = col_name
		check.button_pressed = not hidden.has(col_id)
		check.toggled.connect(_on_collection_toggled.bind(col_id))
		collections_container.add_child(check)
		_collection_checks[col_id] = check


func _on_collection_toggled(pressed: bool, col_id: String) -> void:
	var hidden: Dictionary = settings_manager.get_value("plugin.itch", "hidden_collections", {}) as Dictionary
	if pressed:
		hidden.erase(col_id)
	else:
		hidden[col_id] = true
	settings_manager.set_value("plugin.itch", "hidden_collections", hidden)


func _on_show_purchases_toggled(pressed: bool) -> void:
	settings_manager.set_value("plugin.itch", "show_purchases", pressed)


## Persists the platform filter and reloads the itch.io library so the
## change applies without restarting. The setting is read back by
## library_itch.gd on every library load, so toggling just re-filters.
func _on_filter_toggled(pressed: bool) -> void:
	settings_manager.set_value("plugin.itch", "filter_unsupported", pressed)
	var library_manager := load("res://core/global/library_manager.tres") as LibraryManager
	if library_manager:
		library_manager.load_library("itch")