extends Control

# UI References - Main Menu
@onready var main_menu_panel = $MainMenuPanel
@onready var player_name_input = $MainMenuPanel/VBoxContainer/InputSection/PlayerNameInput
@onready var create_room_btn = $MainMenuPanel/VBoxContainer/ButtonSection/CreateRoomBtn
@onready var browse_rooms_btn = $MainMenuPanel/VBoxContainer/ButtonSection/BrowseRoomsBtn
@onready var main_menu_profile_btn = $MainMenuPanel/VBoxContainer/ButtonSection/ProfileBtn

# UI References - Room List
@onready var room_list_panel = $RoomListPanel
@onready var room_list = $RoomListPanel/VBoxContainer/RoomList
@onready var match_id_input = $RoomListPanel/VBoxContainer/MatchIdInput
@onready var refresh_btn = $RoomListPanel/VBoxContainer/ButtonContainer/RefreshBtn
@onready var join_btn = $RoomListPanel/VBoxContainer/ButtonContainer/JoinBtn
@onready var back_btn = $RoomListPanel/VBoxContainer/ButtonContainer/BackBtn
@onready var room_list_profile_btn = $RoomListPanel/VBoxContainer/ButtonContainer/ProfileBtn

# UI References - Lobby Panel
@onready var lobby_panel = $LobbyPanel
@onready var room_name_header = $LobbyPanel/RoomNameHeader
@onready var host_banner = $LobbyPanel/HostBanner
@onready var host_banner_label = $LobbyPanel/HostBanner/HostBannerLabel


# UI References - Top Bar
@onready var profile_btn = $LobbyPanel/TopBar/ProfileSection/ProfileBtn
@onready var logout_btn = $LobbyPanel/TopBar/ProfileSection/LogoutBtn
@onready var match_id_display = $LobbyPanel/TopBar/MatchIdContainer/MatchIdDisplay
@onready var copy_id_btn = $LobbyPanel/TopBar/MatchIdContainer/CopyIdBtn
@onready var duration_option = $LobbyPanel/TopBar/SettingsSection/DurationOption
@onready var duration_text_label = $LobbyPanel/TopBar/SettingsSection/DurationTextLabel
@onready var random_spawn_check = $LobbyPanel/TopBar/SettingsSection/RandomSpawnCheck
@onready var random_spawn_label = $LobbyPanel/TopBar/SettingsSection/RandomSpawnLabel

# UI References - Player Slots
@onready var players_container = $LobbyPanel/PlayersContainer
@onready var player_slots: Array[Control] = []

# UI References - Area Selector
@onready var area_selector = $LobbyPanel/AreaSelector
@onready var area_left_btn = $LobbyPanel/AreaSelector/AreaLeftBtn
@onready var area_name_label = $LobbyPanel/AreaSelector/AreaName
@onready var area_right_btn = $LobbyPanel/AreaSelector/AreaRightBtn

# UI References - Bottom Bar
@onready var leave_btn = $LobbyPanel/BottomBar/LeaveBtn
@onready var ready_btn = $LobbyPanel/BottomBar/ReadyBtn
@onready var start_game_btn = $LobbyPanel/BottomBar/StartGameBtn
@onready var status_label = $LobbyPanel/StatusLabel

# UI References - Status
@onready var connection_status = $StatusBar/ConnectionStatus

# Character preview textures
var character_textures: Dictionary = {}

# Profile panel instance
var profile_panel_instance: Control
var admin_panel_instance: Control

# Store current match ID for copy function
var current_match_id: String = ""

func _ready():
	# Check if user is authenticated
	if not AuthManager.is_logged_in():
		call_deferred("_go_to_login")
		return
	
	# Load character textures
	_load_character_textures()
	
	# Get player slot references
	_setup_player_slots()
	
	# Set player name from profile and configure input visibility
	if player_name_input:
		# Get the parent container for the input to hide/show properly
		var input_section = player_name_input.get_parent()
		
		if AuthManager.is_guest:
			# Guest user - show name input and let them enter a name
			if input_section:
				input_section.visible = true
			player_name_input.text = "Guest"
			player_name_input.editable = true
		else:
			# Logged-in user - hide name input and use profile name automatically
			if input_section:
				input_section.visible = false
			player_name_input.text = UserProfileManager.get_display_name()
			# Also set the LobbyManager name immediately
			LobbyManager.local_player_name = UserProfileManager.get_display_name()
	
	# Connect button signals - Main Menu
	create_room_btn.pressed.connect(_on_create_room_pressed)
	browse_rooms_btn.pressed.connect(_on_browse_rooms_pressed)
	if main_menu_profile_btn:
		main_menu_profile_btn.pressed.connect(_on_profile_btn_pressed)
	
	# Connect button signals - Room List
	refresh_btn.pressed.connect(_on_refresh_pressed)
	join_btn.pressed.connect(_on_join_pressed)
	back_btn.pressed.connect(_on_back_pressed)
	if room_list_profile_btn:
		room_list_profile_btn.pressed.connect(_on_profile_btn_pressed)
	
	# Connect button signals - Lobby
	profile_btn.pressed.connect(_on_profile_btn_pressed)
	logout_btn.pressed.connect(_on_logout_pressed)
	copy_id_btn.pressed.connect(_on_copy_id_pressed)
	duration_option.item_selected.connect(_on_duration_selected)
	random_spawn_check.toggled.connect(_on_random_spawn_toggled)
	area_left_btn.pressed.connect(func(): LobbyManager.cycle_area(-1))
	area_right_btn.pressed.connect(func(): LobbyManager.cycle_area(1))
	leave_btn.pressed.connect(_on_leave_pressed)
	ready_btn.toggled.connect(_on_ready_toggled)
	start_game_btn.pressed.connect(_on_start_game_pressed)
	
	# Connect LobbyManager signals
	LobbyManager.room_list_updated.connect(_on_room_list_updated)
	LobbyManager.room_joined.connect(_on_room_joined)
	LobbyManager.room_left.connect(_on_room_left)
	LobbyManager.player_joined.connect(_on_player_joined)
	LobbyManager.player_left.connect(_on_player_left)
	LobbyManager.ready_state_changed.connect(_on_ready_state_changed)
	LobbyManager.all_players_ready.connect(_on_all_players_ready)
	LobbyManager.game_starting.connect(_on_game_starting)
	LobbyManager.match_duration_changed.connect(_on_match_duration_changed)
	LobbyManager.randomize_spawn_changed.connect(_on_randomize_spawn_changed)
	LobbyManager.character_changed.connect(_on_character_changed)
	LobbyManager.area_changed.connect(_on_area_changed)
	LobbyManager.player_list_changed.connect(_update_player_slots)
	
	# Connect NakamaManager signals
	NakamaManager.connected_to_nakama.connect(_on_connected_to_nakama)
	NakamaManager.connection_failed.connect(_on_connection_failed)
	
	# Show main menu initially
	_show_panel("main_menu")

# =============================================================================
# Setup
# =============================================================================

func _load_character_textures() -> void:
	"""Load character expression textures for preview."""
	var characters = ["Bob", "Gatot", "Masbro", "Oldpop"]
	for char_name in characters:
		var tex_path = "res://assets/characters/%s_%s-expression.png" % [char_name, char_name.to_lower()]
		if ResourceLoader.exists(tex_path):
			character_textures[char_name] = load(tex_path)
		else:
			print("[Lobby] Character texture not found: ", tex_path)

func _setup_player_slots() -> void:
	"""Get references to all player slot nodes."""
	player_slots.clear()
	for i in range(1, 5):
		var slot = players_container.get_node_or_null("PlayerSlot%d" % i)
		if slot:
			player_slots.append(slot)
			# Connect character navigation buttons for all slots
			var left_btn = slot.get_node_or_null("CharacterNav%d/CharLeftBtn%d" % [i, i])
			var right_btn = slot.get_node_or_null("CharacterNav%d/CharRightBtn%d" % [i, i])
			if left_btn:
				left_btn.pressed.connect(func(): LobbyManager.cycle_character(-1))
			if right_btn:
				right_btn.pressed.connect(func(): LobbyManager.cycle_character(1))

# =============================================================================
# Panel Management
# =============================================================================

func _show_panel(panel_name: String) -> void:
	main_menu_panel.visible = panel_name == "main_menu"
	room_list_panel.visible = panel_name == "room_list"
	lobby_panel.visible = panel_name == "lobby"

# =============================================================================
# Main Menu Button Handlers
# =============================================================================

func _on_create_room_pressed() -> void:
	# Use profile name for logged-in users, or input name for guests
	if AuthManager.is_guest:
		LobbyManager.local_player_name = player_name_input.text.strip_edges()
		if LobbyManager.local_player_name.is_empty():
			LobbyManager.local_player_name = "Guest"
	else:
		LobbyManager.local_player_name = UserProfileManager.get_display_name()
	
	connection_status.text = "Creating room..."
	LobbyManager.create_room("Room %d" % randi_range(1000, 9999))

func _on_browse_rooms_pressed() -> void:
	_show_panel("room_list")
	connection_status.text = "Loading rooms..."
	LobbyManager.refresh_room_list()

# =============================================================================
# Room List Button Handlers
# =============================================================================

func _on_refresh_pressed() -> void:
	connection_status.text = "Refreshing..."
	room_list.clear()
	LobbyManager.refresh_room_list()

func _on_join_pressed() -> void:
	var match_id = match_id_input.text.strip_edges()
	
	if match_id.is_empty():
		var selected_items = room_list.get_selected_items()
		if selected_items.size() == 0:
			connection_status.text = "Please select a room or enter Match ID"
			return
		
		var selected_idx = selected_items[0]
		if selected_idx < LobbyManager.available_rooms.size():
			match_id = LobbyManager.available_rooms[selected_idx].get("match_id", "")
	
	if match_id.is_empty():
		connection_status.text = "No room selected"
		return
	
	# Use profile name for logged-in users, or input name for guests
	if AuthManager.is_guest:
		LobbyManager.local_player_name = player_name_input.text.strip_edges()
		if LobbyManager.local_player_name.is_empty():
			LobbyManager.local_player_name = "Guest"
	else:
		LobbyManager.local_player_name = UserProfileManager.get_display_name()
	
	connection_status.text = "Joining room..."
	LobbyManager.join_room(match_id)

func _on_back_pressed() -> void:
	_show_panel("main_menu")
	connection_status.text = ""

# =============================================================================
# Lobby Button Handlers
# =============================================================================

func _on_ready_toggled(is_ready: bool) -> void:
	LobbyManager.set_ready(is_ready)
	ready_btn.text = "READY ✓" if is_ready else "READY"

func _on_start_game_pressed() -> void:
	LobbyManager.start_game()

func _on_leave_pressed() -> void:
	LobbyManager.leave_room()
	_show_panel("main_menu")
	ready_btn.button_pressed = false
	ready_btn.text = "READY"

func _on_copy_id_pressed() -> void:
	DisplayServer.clipboard_set(current_match_id)
	status_label.text = "Match ID copied!"

func _on_duration_selected(index: int) -> void:
	if not LobbyManager.is_host:
		return
	
	var durations = [60, 120, 180, 300, 600]
	if index >= 0 and index < durations.size():
		LobbyManager.set_match_duration(durations[index])

func _on_random_spawn_toggled(enabled: bool) -> void:
	if not LobbyManager.is_host:
		return
	LobbyManager.set_randomize_spawn(enabled)

func _update_random_spawn_label(enabled: bool) -> void:
	if random_spawn_label:
		random_spawn_label.text = "Random ✓" if enabled else "Random ✗"

func _on_profile_btn_pressed() -> void:
	if not profile_panel_instance:
		var profile_panel_scene := load("res://scenes/ui/profile_panel.tscn")
		profile_panel_instance = profile_panel_scene.instantiate()
		profile_panel_instance.closed.connect(func(): profile_panel_instance.hide())
		add_child(profile_panel_instance)
	
	profile_panel_instance.show_panel()
	profile_panel_instance.position = (get_viewport_rect().size - profile_panel_instance.size) / 2

func _on_logout_pressed() -> void:
	AuthManager.logout()
	_go_to_login()

func _go_to_login() -> void:
	if get_tree():
		get_tree().change_scene_to_file("res://scenes/ui/login_screen.tscn")

# =============================================================================
# LobbyManager Signal Handlers
# =============================================================================

func _on_room_list_updated(rooms: Array) -> void:
	room_list.clear()
	for room in rooms:
		var room_name = room.get("room_name", "Unknown")
		var host_name = room.get("host_name", "Unknown")
		var player_count = room.get("player_count", 1)
		var max_players = room.get("max_players", 4)
		room_list.add_item("%s - %s (%d/%d)" % [room_name, host_name, player_count, max_players])
	
	if rooms.size() == 0:
		connection_status.text = "No rooms available"
	else:
		connection_status.text = "Found %d room(s)" % rooms.size()

func _on_room_joined(room_data: Dictionary) -> void:
	_show_panel("lobby")
	current_match_id = room_data.get("match_id", "")
	room_name_header.text = "ROOM: %s" % room_data.get("room_name", "Unknown")
	match_id_display.text = "ID: %s" % _truncate_id(current_match_id)
	
	# Configure host-specific UI
	var is_host = LobbyManager.is_host
	host_banner.visible = is_host
	start_game_btn.visible = is_host
	
	# Duration: host sees dropdown, clients see text
	duration_option.visible = is_host
	duration_text_label.visible = not is_host
	if not is_host:
		_update_duration_text_label(LobbyManager.get_match_duration())
	
	# Random spawn: host sees checkbox, clients see label
	random_spawn_check.visible = is_host
	random_spawn_label.visible = not is_host
	random_spawn_check.button_pressed = LobbyManager.get_randomize_spawn()
	_update_random_spawn_label(LobbyManager.get_randomize_spawn())
	
	# Area selector: only host can interact
	area_left_btn.disabled = not is_host
	area_right_btn.disabled = not is_host
	area_name_label.text = LobbyManager.get_selected_area()
	
	_update_player_slots()
	connection_status.text = "Connected to room"

func _on_room_left() -> void:
	_show_panel("main_menu")
	connection_status.text = "Left room"

func _on_player_joined(player_data: Dictionary) -> void:
	_update_player_slots()
	status_label.text = "%s joined!" % player_data.get("name", "Player")

func _on_player_left(_player_id: int) -> void:
	_update_player_slots()
	status_label.text = "A player left"

func _on_ready_state_changed(_player_id: int, _is_ready: bool) -> void:
	_update_player_slots()
	_update_status()

func _on_all_players_ready() -> void:
	if LobbyManager.is_host:
		start_game_btn.disabled = false
		status_label.text = "All ready! Start the match!"
	else:
		status_label.text = "All ready! Waiting for host..."

func _on_game_starting() -> void:
	connection_status.text = "Starting game..."
	await get_tree().create_timer(0.5).timeout
	get_tree().change_scene_to_file("res://scenes/main.tscn")

func _on_match_duration_changed(duration_seconds: int) -> void:
	if not LobbyManager.is_host:
		_update_duration_text_label(duration_seconds)

func _on_randomize_spawn_changed(enabled: bool) -> void:
	if not LobbyManager.is_host:
		_update_random_spawn_label(enabled)

func _on_character_changed(_player_id: int, _character_name: String) -> void:
	_update_player_slots()

func _on_area_changed(area_name: String) -> void:
	area_name_label.text = area_name

func _on_connected_to_nakama() -> void:
	connection_status.text = "Connected to server"

func _on_connection_failed(error_message: String) -> void:
	connection_status.text = "Connection failed: %s" % error_message
	_show_panel("main_menu")

# =============================================================================
# Player Slot Updates
# =============================================================================

func _update_player_slots() -> void:
	"""Update all player slot visuals based on current player list."""
	var players = LobbyManager.get_players()
	var my_id = multiplayer.get_unique_id()
	
	for i in range(player_slots.size()):
		var slot = player_slots[i]
		var slot_num = i + 1
		
		if i < players.size():
			var player = players[i]
			slot.visible = true
			
			# Update player name
			var name_label = slot.get_node_or_null("PlayerName%d" % slot_num)
			if name_label:
				var display_name = player.get("name", "Player %d" % slot_num)
				if player.get("id") == 1:
					display_name += " (Host)"
				name_label.text = display_name
			
			# Update character preview
			var char_preview = slot.get_node_or_null("CharacterPreview%d" % slot_num)
			var char_name = player.get("character", "Bob")
			if char_preview and character_textures.has(char_name):
				char_preview.texture = character_textures[char_name]
			
			# Check if this is the local player
			var is_local_player = player.get("id") == my_id
			
			# Update character name in nav (inside CharacterNav)
			var char_name_in_nav = slot.get_node_or_null("CharacterNav%d/CharacterName%d" % [slot_num, slot_num])
			if char_name_in_nav:
				char_name_in_nav.text = char_name
			
			# Update character name label (outside nav, for non-local players)
			var char_name_label = slot.get_node_or_null("CharacterNameLabel%d" % slot_num)
			if char_name_label:
				char_name_label.text = char_name
				char_name_label.visible = not is_local_player
			
			# Show/hide character navigation (only for local player)
			var char_nav = slot.get_node_or_null("CharacterNav%d" % slot_num)
			if char_nav:
				char_nav.visible = is_local_player
			
			# Update ready status
			var ready_label = slot.get_node_or_null("ReadyStatus%d" % slot_num)
			if ready_label:
				var is_ready = player.get("is_ready", false)
				ready_label.text = "READY ✓" if is_ready else "NOT READY"
				ready_label.add_theme_color_override("font_color",
					Color(0.4, 0.8, 0.4) if is_ready else Color(0.6, 0.6, 0.6))
		else:
			# Empty slot - show as bot placeholder
			slot.visible = true
			
			# Update name to show as bot
			var name_label = slot.get_node_or_null("PlayerName%d" % slot_num)
			if name_label:
				name_label.text = "🤖 Bot %d" % slot_num
			
			# Use a character for bot preview
			var char_preview = slot.get_node_or_null("CharacterPreview%d" % slot_num)
			var bot_characters = ["Bob", "Gatot", "Masbro", "Oldpop"]
			var bot_char = bot_characters[(i) % bot_characters.size()]
			if char_preview and character_textures.has(bot_char):
				char_preview.texture = character_textures[bot_char]
			
			# Hide character navigation for bots
			var char_nav = slot.get_node_or_null("CharacterNav%d" % slot_num)
			if char_nav:
				char_nav.visible = false
			
			# Update character name label
			var char_name_label = slot.get_node_or_null("CharacterNameLabel%d" % slot_num)
			if char_name_label:
				char_name_label.text = bot_char
				char_name_label.visible = true
			
			# Show ready status as waiting
			var ready_label = slot.get_node_or_null("ReadyStatus%d" % slot_num)
			if ready_label:
				ready_label.text = "WAITING..."
				ready_label.add_theme_color_override("font_color", Color(0.5, 0.5, 0.7))

func _update_status() -> void:
	var players = LobbyManager.get_players()
	var ready_count = 0
	for player in players:
		if player.get("is_ready", false):
			ready_count += 1
	
	status_label.text = "Ready: %d/%d" % [ready_count, players.size()]
	
	if LobbyManager.is_host:
		start_game_btn.disabled = not LobbyManager.is_all_ready()

# =============================================================================
# Helper Functions
# =============================================================================

func _update_duration_text_label(duration_seconds: int) -> void:
	var duration_text: String
	match duration_seconds:
		60: duration_text = "1 min"
		120: duration_text = "2 min"
		180: duration_text = "3 min"
		300: duration_text = "5 min"
		600: duration_text = "10 min"
		_: duration_text = "%d sec" % duration_seconds
	duration_text_label.text = duration_text

func _truncate_id(id: String) -> String:
	if id.length() > 16:
		return id.substr(0, 8) + "..." + id.substr(-4)
	return id