@tool
extends Window

# Popup window for configuring weapon parameters before creation
# Displays all input fields and creation/cancel buttons

signal weapon_data_confirmed(weapon_data: Dictionary)

# Basic info fields
var weapon_name_field: LineEdit
var item_key_field: LineEdit
var ammo_key_field: LineEdit
var short_name_field: LineEdit
var description_field: TextEdit
var bullet_dropdown: OptionButton
var bullet_path_field: LineEdit

# Weapon stats fields
var priority_field: SpinBox
var ammo_per_shot_field: SpinBox
var rate_of_fire_field: SpinBox
var bullet_capacity_field: SpinBox
var reload_time_field: SpinBox
var infinite_ammo_check: CheckBox
var recharge_time_field: SpinBox
var recharge_amount_field: SpinBox
var bullets_per_shot_field: SpinBox
var spread_angle_field: SpinBox
var random_spread_field: SpinBox

# Buttons
var create_button: Button
var cancel_button: Button

func _ready() -> void:
	# Window configuration
	title = "Create New Weapon"
	size = Vector2i(600, 700)
	transient = true
	exclusive = true
	popup_window = true
	
	# Center on screen
	position = (DisplayServer.screen_get_size() - size) / 2
	
	_build_ui()
	_set_default_values()

func _build_ui() -> void:
	# Main margin container
	var margin = MarginContainer.new()
	margin.set_anchors_preset(Control.PRESET_FULL_RECT)
	margin.add_theme_constant_override("margin_left", 12)
	margin.add_theme_constant_override("margin_top", 12)
	margin.add_theme_constant_override("margin_right", 12)
	margin.add_theme_constant_override("margin_bottom", 12)
	add_child(margin)
	
	# Main vbox
	var vbox = VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 8)
	margin.add_child(vbox)
	
	# Scroll container for form
	var scroll = ScrollContainer.new()
	scroll.size_flags_vertical = Control.SIZE_EXPAND_FILL
	scroll.horizontal_scroll_mode = ScrollContainer.SCROLL_MODE_DISABLED
	vbox.add_child(scroll)
	
	var main_vbox = VBoxContainer.new()
	main_vbox.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	main_vbox.add_theme_constant_override("separation", 12)
	scroll.add_child(main_vbox)
	
	# Basic Info Section
	_build_basic_info_section(main_vbox)
	
	# Stats Section
	_build_stats_section(main_vbox)
	
	vbox.add_child(HSeparator.new())
	
	# Buttons at bottom
	var button_hbox = HBoxContainer.new()
	button_hbox.alignment = BoxContainer.ALIGNMENT_CENTER
	button_hbox.add_theme_constant_override("separation", 8)
	vbox.add_child(button_hbox)
	
	cancel_button = Button.new()
	cancel_button.text = "Cancel"
	cancel_button.custom_minimum_size = Vector2(100, 0)
	cancel_button.pressed.connect(_on_cancel_pressed)
	button_hbox.add_child(cancel_button)
	
	create_button = Button.new()
	create_button.text = "Create Weapon"
	create_button.custom_minimum_size = Vector2(150, 0)
	create_button.pressed.connect(_on_create_pressed)
	button_hbox.add_child(create_button)

func _build_basic_info_section(parent: Control) -> void:
	var section = VBoxContainer.new()
	section.add_theme_constant_override("separation", 4)
	parent.add_child(section)
	
	var header = Label.new()
	header.text = "Basic Information"
	header.add_theme_font_size_override("font_size", 16)
	section.add_child(header)
	
	# Weapon Name
	weapon_name_field = _add_line_edit_field(section, "Weapon Name:", "e.g., Ice Rifle")
	weapon_name_field.text_changed.connect(_on_weapon_name_changed)
	
	# Item Key
	item_key_field = _add_line_edit_field(section, "Item Key:", "AUTO_GENERATED")
	
	# Ammo Key
	ammo_key_field = _add_line_edit_field(section, "Ammo Key:", "(optional, leave empty for none)")
	
	# Short Name
	short_name_field = _add_line_edit_field(section, "Short Name:", "e.g., IR-7")
	
	# Description
	var desc_label = Label.new()
	desc_label.text = "Description:"
	section.add_child(desc_label)
	
	description_field = TextEdit.new()
	description_field.custom_minimum_size = Vector2(0, 60)
	description_field.placeholder_text = "Enter weapon description..."
	section.add_child(description_field)
	
	section.add_child(HSeparator.new())
	
	# Bullet Selection
	var bullet_header = Label.new()
	bullet_header.text = "Bullet Configuration"
	bullet_header.add_theme_font_size_override("font_size", 14)
	section.add_child(bullet_header)
	
	# Bullet dropdown
	var bullet_hbox = HBoxContainer.new()
	section.add_child(bullet_hbox)
	
	var bullet_label = Label.new()
	bullet_label.text = "Bullet Type:"
	bullet_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	bullet_hbox.add_child(bullet_label)
	
	bullet_dropdown = OptionButton.new()
	bullet_dropdown.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	bullet_dropdown.item_selected.connect(_on_bullet_selected)
	bullet_hbox.add_child(bullet_dropdown)
	
	# Populate bullet dropdown
	_populate_bullet_dropdown()
	
	# Bullet Path (read-only display)
	bullet_path_field = _add_line_edit_field(section, "Bullet Path:", "")
	bullet_path_field.editable = false
	bullet_path_field.text = "res://Resources/Bullets/simple_ice_bullet.tres"

func _build_stats_section(parent: Control) -> void:
	var section = VBoxContainer.new()
	section.add_theme_constant_override("separation", 4)
	parent.add_child(section)
	
	var header = Label.new()
	header.text = "Weapon Statistics"
	header.add_theme_font_size_override("font_size", 16)
	section.add_child(header)
	
	var grid = GridContainer.new()
	grid.columns = 2
	grid.add_theme_constant_override("h_separation", 8)
	grid.add_theme_constant_override("v_separation", 4)
	section.add_child(grid)
	
	# Create all stat fields
	priority_field = _add_spinbox_field(grid, "Priority:", 0, 100, 1, 1)
	ammo_per_shot_field = _add_spinbox_field(grid, "Ammo Per Shot:", 0, 1000, 1, 1)
	rate_of_fire_field = _add_spinbox_field(grid, "Rate of Fire (s):", 0, 100, 0.01, 0.2)
	bullet_capacity_field = _add_spinbox_field(grid, "Bullet Capacity:", 0, 10000, 1, 100)
	reload_time_field = _add_spinbox_field(grid, "Reload Time (s):", 0, 100, 0.1, 2.0)
	
	# Infinite ammo checkbox
	var inf_label = Label.new()
	inf_label.text = "Infinite Ammo:"
	grid.add_child(inf_label)
	infinite_ammo_check = CheckBox.new()
	grid.add_child(infinite_ammo_check)
	
	recharge_time_field = _add_spinbox_field(grid, "Recharge Time (s):", 0, 100, 0.1, 0)
	recharge_amount_field = _add_spinbox_field(grid, "Recharge Amount:", 0, 1000, 1, 0)
	bullets_per_shot_field = _add_spinbox_field(grid, "Bullets Per Shot:", 1, 100, 1, 1)
	spread_angle_field = _add_spinbox_field(grid, "Spread Angle (°):", 0, 360, 0.1, 0)
	random_spread_field = _add_spinbox_field(grid, "Random Spread (°):", 0, 360, 0.1, 0)

func _add_line_edit_field(parent: Control, label_text: String, placeholder: String) -> LineEdit:
	var hbox = HBoxContainer.new()
	parent.add_child(hbox)
	
	var label = Label.new()
	label.text = label_text
	label.custom_minimum_size = Vector2(120, 0)
	hbox.add_child(label)
	
	var line_edit = LineEdit.new()
	line_edit.placeholder_text = placeholder
	line_edit.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	hbox.add_child(line_edit)
	
	return line_edit

func _add_spinbox_field(parent: Control, label_text: String, min_val: float, max_val: float, step_val: float, default_val: float) -> SpinBox:
	var label = Label.new()
	label.text = label_text
	parent.add_child(label)
	
	var spinbox = SpinBox.new()
	spinbox.min_value = min_val
	spinbox.max_value = max_val
	spinbox.step = step_val
	spinbox.value = default_val
	spinbox.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	parent.add_child(spinbox)
	
	return spinbox

func _set_default_values() -> void:
	# Basic info defaults
	weapon_name_field.text = "New Weapon"
	item_key_field.text = "NEW_WEAPON"
	ammo_key_field.text = ""
	short_name_field.text = "NW-1"
	description_field.text = "A new weapon for testing"
	
	# Select default bullet (simple_ice_bullet)
	_select_bullet_by_path("res://Resources/Bullets/simple_ice_bullet.tres")
	
	# Weapon stats defaults
	priority_field.value = 10
	ammo_per_shot_field.value = 1
	rate_of_fire_field.value = 0.2
	bullet_capacity_field.value = 50
	reload_time_field.value = 1.0
	infinite_ammo_check.button_pressed = false
	recharge_time_field.value = 0.5
	recharge_amount_field.value = 5
	bullets_per_shot_field.value = 1
	spread_angle_field.value = 0.0
	random_spread_field.value = 0.0

func _populate_bullet_dropdown() -> void:
	# Get all bullet resources from the Bullets folder
	var bullets_dir = "res://Resources/Bullets/"
	var dir = DirAccess.open(bullets_dir)
	
	if dir == null:
		push_error("Could not open bullets directory: " + bullets_dir)
		return
	
	dir.list_dir_begin()
	var file_name = dir.get_next()
	var bullet_files: Array[String] = []
	
	while file_name != "":
		if not dir.current_is_dir() and file_name.ends_with(".tres"):
			bullet_files.append(bullets_dir + file_name)
		file_name = dir.get_next()
	
	dir.list_dir_end()
	
	# Sort alphabetically
	bullet_files.sort()
	
	# Add to dropdown
	for bullet_path in bullet_files:
		var bullet_name = bullet_path.get_file().get_basename()
		bullet_dropdown.add_item(bullet_name)
		bullet_dropdown.set_item_metadata(bullet_dropdown.item_count - 1, bullet_path)

func _select_bullet_by_path(path: String) -> void:
	# Find and select the bullet in the dropdown
	for i in range(bullet_dropdown.item_count):
		if bullet_dropdown.get_item_metadata(i) == path:
			bullet_dropdown.select(i)
			bullet_path_field.text = path
			return
	
	# If not found, select first item
	if bullet_dropdown.item_count > 0:
		bullet_dropdown.select(0)
		bullet_path_field.text = bullet_dropdown.get_item_metadata(0)

func _on_bullet_selected(index: int) -> void:
	# Update the bullet path field when dropdown selection changes
	var selected_path = bullet_dropdown.get_item_metadata(index)
	bullet_path_field.text = selected_path

func _on_weapon_name_changed(new_name: String) -> void:
	# Auto-generate item key from weapon name
	var generated_key = new_name.to_upper().replace(" ", "_")
	generated_key = generated_key.replace("-", "_").replace("'", "").replace("\"", "")
	item_key_field.text = generated_key

func _on_create_pressed() -> void:
	# Validate inputs
	if not _validate_inputs():
		return
	
	# Build weapon data dictionary
	var weapon_data = {
		"weapon_name": weapon_name_field.text,
		"weapon_item_key": item_key_field.text,
		"ammo_key": ammo_key_field.text,
		"weapon_short_name": short_name_field.text,
		"weapon_description": description_field.text,
		"default_bullet_path": bullet_path_field.text,
		"priority": int(priority_field.value),
		"ammo_per_shot": int(ammo_per_shot_field.value),
		"rate_of_fire": rate_of_fire_field.value,
		"bullet_capacity": int(bullet_capacity_field.value),
		"reload_time": reload_time_field.value,
		"infinite_ammo": infinite_ammo_check.button_pressed,
		"recharge_time": recharge_time_field.value,
		"recharge_amount": int(recharge_amount_field.value),
		"bullets_per_shot": int(bullets_per_shot_field.value),
		"spread_angle": spread_angle_field.value,
		"random_spread": random_spread_field.value
	}
	
	# Emit signal with weapon data
	weapon_data_confirmed.emit(weapon_data)
	
	# Close the window
	hide()
	queue_free()

func _on_cancel_pressed() -> void:
	# Close without creating
	hide()
	queue_free()

func _validate_inputs() -> bool:
	# Check weapon name
	if weapon_name_field.text.strip_edges().is_empty():
		_show_error("Weapon name cannot be empty")
		return false
	
	# Check item key
	if item_key_field.text.strip_edges().is_empty():
		_show_error("Item key cannot be empty")
		return false
	
	# Check item key format
	var key = item_key_field.text
	if not key.to_upper() == key:
		_show_warning("Item key should be uppercase")
	
	# Check bullet path
	if not ResourceLoader.exists(bullet_path_field.text):
		_show_error("Bullet resource does not exist at: " + bullet_path_field.text)
		return false
	
	return true

func _show_error(message: String) -> void:
	var dialog = AcceptDialog.new()
	dialog.dialog_text = message
	dialog.title = "Error"
	add_child(dialog)
	dialog.popup_centered()

func _show_warning(message: String) -> void:
	var dialog = AcceptDialog.new()
	dialog.dialog_text = message
	dialog.title = "Warning"
	add_child(dialog)
	dialog.popup_centered()