extends PopupPanel

## Settings menu with tabbed interface: General, Plugins, About.
## Touch-friendly: large close button, ample spacing, exclusive modal.

const VERSION: String = "0.1.0-alpha"
const CONTACT_EMAIL: String = "5d@fifthdread.com"

const CLOSE_BTN_SIZE: Vector2 = Vector2(56, 56)
const WINDOW_CORNER_RADIUS: float = 12.0

var _tab_container: TabContainer
var _close_button: Button


func _ready() -> void:
	exclusive = true
	_build_ui()
	_popup_centered_clamp(Vector2i(720, 540))


## Clamp popup to fit within screen, handling multi-monitor edge cases.
func _popup_centered_clamp(min_size: Vector2i) -> void:
	popup_centered(min_size)
	# Ensure the popup doesn't extend past screen edges
	var screen_rect := DisplayServer.screen_get_usable_rect(
		DisplayServer.window_get_current_screen()
	)
	var max_pos := Vector2(
		screen_rect.position.x + screen_rect.size.x - size.x,
		screen_rect.position.y + screen_rect.size.y - size.y
	)
	position = Vector2i(
		mini(maxi(position.x, screen_rect.position.x), max_pos.x),
		mini(maxi(position.y, screen_rect.position.y), max_pos.y)
	)


func _build_ui() -> void:
	# Window background with rounded corners
	var bg_style := StyleBoxFlat.new()
	bg_style.bg_color = Color(0.12, 0.12, 0.16, 1.0)
	bg_style.corner_radius_top_left = WINDOW_CORNER_RADIUS
	bg_style.corner_radius_top_right = WINDOW_CORNER_RADIUS
	bg_style.corner_radius_bottom_left = WINDOW_CORNER_RADIUS
	bg_style.corner_radius_bottom_right = WINDOW_CORNER_RADIUS
	add_theme_stylebox_override("panel", bg_style)

	# Content area — leave right margin for the overlaid close button
	var mc := MarginContainer.new()
	mc.add_theme_constant_override("margin_left", 16)
	mc.add_theme_constant_override("margin_right", 16 + CLOSE_BTN_SIZE.x)
	mc.add_theme_constant_override("margin_top", 12)
	mc.add_theme_constant_override("margin_bottom", 12)
	add_child(mc)

	var vbox := VBoxContainer.new()
	vbox.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	vbox.size_flags_vertical = Control.SIZE_EXPAND_FILL
	mc.add_child(vbox)

	# Title bar (no close button — it's overlaid in the corner)
	var title_bar := HBoxContainer.new()
	var title_label := Label.new()
	title_label.text = "Settings"
	title_label.add_theme_font_size_override("font_size", 24)
	title_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	title_bar.add_child(title_label)
	vbox.add_child(title_bar)

	# Tab container
	_tab_container = TabContainer.new()
	_tab_container.size_flags_vertical = Control.SIZE_EXPAND_FILL
	vbox.add_child(_tab_container)

	# Build tabs
	_build_general_tab()
	_build_plugins_tab()
	_build_about_tab()

	# Red corner close button (overlaid, anchored top-right, flush to edge)
	_close_button = Button.new()
	_close_button.text = "✕"
	_close_button.add_theme_font_size_override("font_size", 22)
	_close_button.flat = true
	_close_button.pressed.connect(_close)
	_close_button.custom_minimum_size = CLOSE_BTN_SIZE

	var btn_style := StyleBoxFlat.new()
	btn_style.bg_color = Color(1.0, 0.0, 0.0, 1.0)
	btn_style.corner_radius_top_right = WINDOW_CORNER_RADIUS
	btn_style.corner_radius_bottom_left = WINDOW_CORNER_RADIUS
	btn_style.corner_radius_top_left = 0
	btn_style.corner_radius_bottom_right = 0
	btn_style.set_corner_radius(Corner.CORNER_TOP_RIGHT, WINDOW_CORNER_RADIUS)
	btn_style.set_corner_radius(Corner.CORNER_BOTTOM_LEFT, WINDOW_CORNER_RADIUS)
	_close_button.add_theme_stylebox_override("normal", btn_style)

	var hover_style := StyleBoxFlat.new()
	hover_style.bg_color = Color(0.85, 0.0, 0.0, 1.0)
	hover_style.corner_radius_top_right = WINDOW_CORNER_RADIUS
	hover_style.corner_radius_bottom_left = WINDOW_CORNER_RADIUS
	hover_style.corner_radius_top_left = 0
	hover_style.corner_radius_bottom_right = 0
	_close_button.add_theme_stylebox_override("hover", hover_style)

	var pressed_style := StyleBoxFlat.new()
	pressed_style.bg_color = Color(0.7, 0.0, 0.0, 1.0)
	pressed_style.corner_radius_top_right = WINDOW_CORNER_RADIUS
	pressed_style.corner_radius_bottom_left = WINDOW_CORNER_RADIUS
	pressed_style.corner_radius_top_left = 0
	pressed_style.corner_radius_bottom_right = 0
	_close_button.add_theme_stylebox_override("pressed", pressed_style)

	_close_button.set_anchors_preset(Control.PRESET_TOP_RIGHT)
	add_child(_close_button)


func _build_general_tab() -> void:
	var tab := VBoxContainer.new()
	tab.name = "General"

	var inner := MarginContainer.new()
	inner.add_theme_constant_override("margin_left", 4)
	inner.add_theme_constant_override("margin_right", 4)
	inner.add_theme_constant_override("margin_top", 12)
	tab.add_child(inner)

	var vbox := VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 14)
	inner.add_child(vbox)

	for i in range(1, 4):
		var row := HBoxContainer.new()
		row.size_flags_horizontal = Control.SIZE_EXPAND_FILL

		var label := Label.new()
		label.text = "Setting %d:" % i
		label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		row.add_child(label)

		var val := Label.new()
		val.text = "[configure %d]" % i
		val.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
		val.modulate = Color(0.6, 0.6, 0.65)
		val.custom_minimum_size = Vector2(200, 0)
		row.add_child(val)

		vbox.add_child(row)

	_tab_container.add_child(tab)


func _build_plugins_tab() -> void:
	var tab := VBoxContainer.new()
	tab.name = "Plugins"

	var inner := MarginContainer.new()
	inner.add_theme_constant_override("margin_left", 4)
	inner.add_theme_constant_override("margin_right", 4)
	inner.add_theme_constant_override("margin_top", 12)
	tab.add_child(inner)

	var vbox := VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 10)
	inner.add_child(vbox)

	# Header row
	var header := HBoxContainer.new()
	header.size_flags_horizontal = Control.SIZE_EXPAND_FILL

	var hdr_name := Label.new()
	hdr_name.text = "Plugin"
	hdr_name.add_theme_font_size_override("font_size", 14)
	hdr_name.modulate = Color(0.6, 0.6, 0.65)
	hdr_name.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	header.add_child(hdr_name)

	var hdr_ver := Label.new()
	hdr_ver.text = "Version"
	hdr_ver.add_theme_font_size_override("font_size", 14)
	hdr_ver.modulate = Color(0.6, 0.6, 0.65)
	hdr_ver.custom_minimum_size = Vector2(80, 0)
	header.add_child(hdr_ver)

	var hdr_active := Label.new()
	hdr_active.text = "Active"
	hdr_active.add_theme_font_size_override("font_size", 14)
	hdr_active.modulate = Color(0.5, 0.5, 0.55)
	hdr_active.custom_minimum_size = Vector2(60, 0)
	hdr_active.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	header.add_child(hdr_active)

	vbox.add_child(header)
	vbox.add_child(HSeparator.new())

	# Plugin rows
	if not PluginManager.has_method("get_plugin_ids"):
		_tab_container.add_child(tab)
		return

	var plugin_ids: PackedStringArray = PluginManager.get_plugin_ids()
	if plugin_ids.is_empty():
		var empty := Label.new()
		empty.text = "No plugins loaded."
		empty.modulate = Color(0.5, 0.5, 0.55)
		empty.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
		vbox.add_child(empty)
		_tab_container.add_child(tab)
		return

	for pid in plugin_ids:
		var info: Dictionary = PluginManager.get_plugin(pid)
		var setting_defs := PluginManager.get_plugin_settings(pid) if PluginManager.has_method("get_plugin_settings") else []
		var row := HBoxContainer.new()
		row.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		row.add_theme_constant_override("separation", 8)

		var name_lbl := Label.new()
		name_lbl.text = info.get("name", pid)
		name_lbl.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		row.add_child(name_lbl)

		var ver_lbl := Label.new()
		ver_lbl.text = "v%s" % info.get("version", "?")
		ver_lbl.custom_minimum_size = Vector2(80, 0)
		row.add_child(ver_lbl)

		var cb := CheckBox.new()
		cb.button_pressed = PluginManager.is_plugin_active(pid)
		cb.toggled.connect(_on_plugin_toggled.bind(pid))
		cb.custom_minimum_size = Vector2(60, 48)
		cb.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
		row.add_child(cb)

		if not setting_defs.is_empty():
			var cog := Button.new()
			cog.text = "⚙"
			cog.flat = true
			cog.tooltip_text = "Settings for %s" % info.get("name", pid)
			cog.custom_minimum_size = Vector2(44, 44)
			cog.add_theme_font_size_override("font_size", 20)
			cog.pressed.connect(_on_plugin_settings_pressed.bind(pid))
			row.add_child(cog)

		vbox.add_child(row)

	_tab_container.add_child(tab)


func _on_plugin_toggled(checked: bool, plugin_id: String) -> void:
	if PluginManager.has_method("set_plugin_active"):
		PluginManager.set_plugin_active(plugin_id, checked)


func _on_plugin_settings_pressed(plugin_id: String) -> void:
	var popup := preload("res://scenes/plugin_settings_popup.tscn").instantiate()
	popup.setup(plugin_id)
	add_sibling(popup)
	popup.popup_centered(Vector2i(720, 540))


func _build_about_tab() -> void:
	var tab := VBoxContainer.new()
	tab.name = "About"

	var center := VBoxContainer.new()
	center.alignment = BoxContainer.ALIGNMENT_CENTER
	center.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	center.size_flags_vertical = Control.SIZE_EXPAND_FILL
	tab.add_child(center)

	# Logo
	var tex := load("res://assets/icons/icon.svg")
	if tex != null:
		var logo := TextureRect.new()
		logo.texture = tex
		logo.custom_minimum_size = Vector2(80, 80)
		logo.expand_mode = TextureRect.EXPAND_FIT_WIDTH
		logo.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
		logo.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
		center.add_child(logo)

	center.add_spacer(false)

	var name_lbl := Label.new()
	name_lbl.text = "V Panel"
	name_lbl.add_theme_font_size_override("font_size", 28)
	name_lbl.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
	center.add_child(name_lbl)

	center.add_spacer(false)

	var ver_lbl := Label.new()
	ver_lbl.text = "Version %s" % VERSION
	ver_lbl.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
	center.add_child(ver_lbl)

	var contact_lbl := Label.new()
	contact_lbl.text = "Contact: %s" % CONTACT_EMAIL
	contact_lbl.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
	center.add_child(contact_lbl)

	center.add_spacer(false)

	var desc_lbl := Label.new()
	desc_lbl.text = "A real-time system status monitor built with Godot 4"
	desc_lbl.size_flags_horizontal = Control.SIZE_SHRINK_CENTER
	desc_lbl.modulate = Color(0.6, 0.6, 0.65)
	center.add_child(desc_lbl)

	_tab_container.add_child(tab)


func _close() -> void:
	queue_free()