extends CanvasLayer

var _nm: Node

# Top HUD
var _time_label: Label
var _local_kills_label: Label
var _leader_label: Label

# Killfeed
var _killfeed_vbox: VBoxContainer

# Scoreboard
var _scoreboard_panel: PanelContainer
var _scoreboard_grid: GridContainer

func _ready() -> void:
	_nm = get_node_or_null("/root/NetworkManager")
	# Ensure the comic theme is active even when a level is loaded directly
	# (tests, debug runs) without passing through the main menu.
	UITheme.apply_global(get_tree())

	# Top HUD
	var top_hbox = HBoxContainer.new()
	top_hbox.set_anchors_preset(Control.PRESET_TOP_WIDE)
	top_hbox.alignment = BoxContainer.ALIGNMENT_CENTER
	top_hbox.add_theme_constant_override("separation", 50)
	var margin = MarginContainer.new()
	margin.add_theme_constant_override("margin_top", 20)
	margin.set_anchors_preset(Control.PRESET_TOP_WIDE)
	margin.add_child(top_hbox)
	add_child(margin)
	
	_time_label = Label.new()
	_time_label.add_theme_font_size_override("font_size", 48)
	_time_label.add_theme_color_override("font_outline_color", UITheme.INK)
	_time_label.add_theme_constant_override("outline_size", 8)
	top_hbox.add_child(_time_label)
	
	_local_kills_label = Label.new()
	_local_kills_label.text = "0 Kills"
	_local_kills_label.add_theme_font_size_override("font_size", 64)
	_local_kills_label.add_theme_color_override("font_color", UITheme.PAPAYA)
	_local_kills_label.add_theme_color_override("font_outline_color", UITheme.INK)
	_local_kills_label.add_theme_constant_override("outline_size", 12)
	top_hbox.add_child(_local_kills_label)
	
	_leader_label = Label.new()
	_leader_label.text = "Leader: None"
	_leader_label.add_theme_font_size_override("font_size", 32)
	_leader_label.add_theme_color_override("font_outline_color", UITheme.INK)
	_leader_label.add_theme_constant_override("outline_size", 8)
	top_hbox.add_child(_leader_label)
	
	# Killfeed
	var kf_margin = MarginContainer.new()
	kf_margin.set_anchors_and_offsets_preset(Control.PRESET_TOP_RIGHT)
	kf_margin.grow_horizontal = Control.GROW_DIRECTION_BEGIN
	kf_margin.add_theme_constant_override("margin_top", 20)
	kf_margin.add_theme_constant_override("margin_right", 20)
	add_child(kf_margin)
	
	_killfeed_vbox = VBoxContainer.new()
	_killfeed_vbox.alignment = BoxContainer.ALIGNMENT_END
	kf_margin.add_child(_killfeed_vbox)
	
	# Scoreboard Overlay
	var center_container = CenterContainer.new()
	center_container.set_anchors_preset(Control.PRESET_FULL_RECT)
	add_child(center_container)
	
	_scoreboard_panel = PanelContainer.new()
	_scoreboard_panel.custom_minimum_size = Vector2(800, 600)
	# Styled by the shared UITheme PanelContainer stylebox (ink-border card)
	_scoreboard_panel.hide()
	center_container.add_child(_scoreboard_panel)
	
	var sb_vbox = VBoxContainer.new()
	var sb_margin = MarginContainer.new()
	sb_margin.add_theme_constant_override("margin_left", 20)
	sb_margin.add_theme_constant_override("margin_top", 20)
	sb_margin.add_theme_constant_override("margin_right", 20)
	sb_margin.add_theme_constant_override("margin_bottom", 20)
	sb_margin.add_child(sb_vbox)
	_scoreboard_panel.add_child(sb_margin)
	
	var sb_title = Label.new()
	sb_title.text = "Scoreboard"
	sb_title.add_theme_font_size_override("font_size", 48)
	sb_title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	sb_vbox.add_child(sb_title)
	
	_scoreboard_grid = GridContainer.new()
	_scoreboard_grid.columns = 5
	_scoreboard_grid.add_theme_constant_override("h_separation", 50)
	_scoreboard_grid.add_theme_constant_override("v_separation", 10)
	sb_vbox.add_child(_scoreboard_grid)
	
	_populate_scoreboard_headers()
	
	# Signals
	if _nm:
		_nm.stats_updated.connect(_update_hud)
		_nm.killfeed_event.connect(_on_killfeed_event)
		_nm.match_state_updated.connect(_update_timer)
		_update_hud()

func _process(_delta: float) -> void:
	if Input.is_action_just_pressed("scoreboard"):
		_scoreboard_panel.show()
		_update_hud()
	elif Input.is_action_just_released("scoreboard"):
		_scoreboard_panel.hide()
	
	if _nm and _nm.match_active:
		_update_timer()

func _update_timer() -> void:
	if not _nm: return
	var t = int(_nm.match_time_remaining)
	var m = int(t / 60.0)
	var s = t % 60
	_time_label.text = "%02d:%02d" % [m, s]

func _populate_scoreboard_headers() -> void:
	for child in _scoreboard_grid.get_children():
		child.queue_free()
	
	var headers = ["Player", "Kills", "Deaths", "Assists", "Ping"]
	for h in headers:
		var l = Label.new()
		l.text = h
		l.add_theme_font_size_override("font_size", 24)
		l.add_theme_color_override("font_color", UITheme.PAPER_DIM)
		_scoreboard_grid.add_child(l)

func _update_hud() -> void:
	if not _nm: return
	
	var my_id = multiplayer.get_unique_id()
	
	var leader_name = "None"
	var max_kills = -1
	
	var stats = _nm.player_stats
	
	# Sort players by kills for scoreboard
	var players = stats.keys()
	players.sort_custom(func(a, b): return stats[a].get("kills", 0) > stats[b].get("kills", 0))
	
	_populate_scoreboard_headers()
	
	for pid in players:
		var p_data = stats[pid]
		var p_kills = p_data.get("kills", 0)
		
		# Find leader
		if p_kills > max_kills:
			max_kills = p_kills
			leader_name = p_data.get("username", "Player " + str(pid))
		
		# Update local kills
		if pid == my_id:
			_local_kills_label.text = str(p_kills) + " Kills"
		
		# Build Scoreboard Row
		var c_name = Label.new()
		c_name.text = p_data.get("username", "Player")
		c_name.add_theme_font_size_override("font_size", 24)
		c_name.add_theme_color_override("font_color", Color(p_data.get("color", "cccccc")))
		_scoreboard_grid.add_child(c_name)
		
		var c_k = Label.new()
		c_k.text = str(p_kills)
		c_k.add_theme_font_size_override("font_size", 24)
		_scoreboard_grid.add_child(c_k)
		
		var c_d = Label.new()
		c_d.text = str(p_data.get("deaths", 0))
		c_d.add_theme_font_size_override("font_size", 24)
		_scoreboard_grid.add_child(c_d)
		
		var c_a = Label.new()
		c_a.text = str(p_data.get("assists", 0))
		c_a.add_theme_font_size_override("font_size", 24)
		_scoreboard_grid.add_child(c_a)
		
		var c_p = Label.new()
		c_p.text = str(p_data.get("ping", 0)) + "ms"
		c_p.add_theme_font_size_override("font_size", 24)
		_scoreboard_grid.add_child(c_p)
	
	_leader_label.text = "Leader: %s (%s Kills)" % [leader_name, max_kills]

func _on_killfeed_event(victim: String, killer: String, weapon: String, v_color: String = "cccccc", k_color: String = "cccccc") -> void:
	var l = RichTextLabel.new()
	l.bbcode_enabled = true
	l.fit_content = true
	l.autowrap_mode = TextServer.AUTOWRAP_OFF
	
	if killer == "":
		l.text = "[color=#%s]%s[/color] died." % [v_color, victim]
	else:
		l.text = "[color=#%s]%s[/color] [%s] [color=#%s]%s[/color]" % [k_color, killer, weapon, v_color, victim]
	
	l.add_theme_font_size_override("normal_font_size", 20)
	l.add_theme_color_override("font_outline_color", UITheme.INK)
	l.add_theme_constant_override("outline_size", 4)
	_killfeed_vbox.add_child(l)
	
	# Fade out and queue_free after 5 seconds
	var t = get_tree().create_tween()
	t.tween_interval(4.0)
	t.tween_property(l, "modulate:a", 0.0, 1.0)
	t.tween_callback(l.queue_free)