@tool
extends BaseViewer

# Displays all items from the ItemsDatabase in a grid format
# Shows sprite, name, and item type badge
# Clicking opens the item resource in the inspector

signal item_selected(item_resource_path: String)
signal duplicate_item_requested(item_data: Dictionary)
signal item_deleted(item_name: String, item_path: String)
signal item_duplication_started(item_name: String)

var _items_database_path := "res://Resources/ItemsDatabase.tres"
var _show_neither_checkbox: CheckBox

const SETTING_SHOW_2D = "weapon_creator/item_filter_show_2d"
const SETTING_SHOW_3D = "weapon_creator/item_filter_show_3d"
const SETTING_SHOW_NEITHER = "weapon_creator/item_filter_show_neither"

# ItemTypes enum values mapped to colors
const ITEM_TYPE_COLORS = {
	0: Color(1.0, 0.2, 0.2),      # KeycardRed - Red
	1: Color(0.3, 0.5, 1.0),      # KeycardBlue - Blue
	2: Color(0.3, 1.0, 0.3),      # KeycardGreen - Green
	3: Color(1.0, 0.8, 0.2),      # Ammo - Yellow
	4: Color(1.0, 0.3, 0.3),      # Medkit - Light Red
	5: Color(0.5, 1.0, 0.3),      # FrogBomb - Lime
	6: Color(1.0, 0.5, 0.0),      # Bomb - Orange
	7: Color(0.8, 0.3, 0.0),      # Mine - Brown/Orange
	8: Color(1.0, 1.0, 0.2),      # Battery - Bright Yellow
	9: Color(0.7, 0.7, 0.7),      # Weapon - Gray
	10: Color(1.0, 0.2, 1.0),     # Power - Magenta
	11: Color(1.0, 1.0, 1.0),     # Points - White
	12: Color(0.8, 0.8, 0.0),     # Credits - Gold
	13: Color(0.5, 0.3, 1.0)      # KeyItem - Purple
}

const ITEM_TYPE_NAMES = [
	"KeycardRed",
	"KeycardBlue",
	"KeycardGreen",
	"Ammo",
	"Medkit",
	"FrogBomb",
	"Bomb",
	"Mine",
	"Battery",
	"Weapon",
	"Power",
	"Points",
	"Credits",
	"KeyItem"
]

func _supports_2d_3d_filter() -> bool:
	return true

func _get_filter_setting_2d_key() -> String:
	return SETTING_SHOW_2D

func _get_filter_setting_3d_key() -> String:
	return SETTING_SHOW_3D

# Override to add the "Neither" checkbox
func _build_ui() -> void:
	super._build_ui()
	
	# Find the header_hbox and add the Neither checkbox after 3D checkbox
	var margin = get_child(0) as MarginContainer
	var vbox = margin.get_child(0) as VBoxContainer
	var header_hbox = vbox.get_child(0) as HBoxContainer
	
	# The refresh button is the last child, so insert before it
	var refresh_button = header_hbox.get_child(header_hbox.get_child_count() - 1)
	
	_show_neither_checkbox = CheckBox.new()
	_show_neither_checkbox.text = "Neither"
	_show_neither_checkbox.button_pressed = _load_filter_setting(SETTING_SHOW_NEITHER, true)
	_show_neither_checkbox.toggled.connect(_on_filter_changed)
	_show_neither_checkbox.tooltip_text = "Show items that don't have 2D or 3D properties set"
	header_hbox.add_child(_show_neither_checkbox)
	header_hbox.move_child(_show_neither_checkbox, header_hbox.get_child_count() - 2)

func _build_header_buttons(header_hbox: HBoxContainer) -> void:
	var create_button = Button.new()
	create_button.text = "Create Item"
	create_button.pressed.connect(_on_create_item_pressed)
	header_hbox.add_child(create_button)

func setup(editor_interface: EditorInterface, dock: PanelContainer = null) -> void:
	super.setup(editor_interface, dock)
	
	if _show_neither_checkbox:
		_show_neither_checkbox.button_pressed = _load_filter_setting(SETTING_SHOW_NEITHER, true)

func refresh() -> void:
	_clear_grid()
	
	if not ResourceLoader.exists(_items_database_path):
		_add_error_label("ItemsDatabase not found at: " + _items_database_path)
		return
	
	var items_database = load(_items_database_path)
	if items_database == null:
		_add_error_label("Failed to load ItemsDatabase")
		return
	
	var loot_items = items_database.get("LootItems")
	if loot_items == null:
		_add_error_label("No LootItems found in database")
		return
	
	var show_2d = _should_show_2d()
	var show_3d = _should_show_3d()
	var show_neither = _show_neither_checkbox == null or _show_neither_checkbox.button_pressed
	
	var item_count = 0
	for loot_item in loot_items:
		var has_2d = _item_has_2d(loot_item)
		var has_3d = _item_has_3d(loot_item)
		
		var should_show = false
		if has_2d and has_3d:
			should_show = show_2d or show_3d
		elif has_2d:
			should_show = show_2d
		elif has_3d:
			should_show = show_3d
		else:
			should_show = show_neither
		
		if should_show:
			_create_item_tile(loot_item, has_2d, has_3d)
			item_count += 1
	
	if item_count == 0:
		_add_info_label("No items match current filters")

func _item_has_2d(loot_item: Resource) -> bool:
	var weapon_data = loot_item.get("WeaponData")
	var drop_scene = loot_item.get("DropScenePath")
	return weapon_data != null or (drop_scene != null and drop_scene != "")

func _item_has_3d(loot_item: Resource) -> bool:
	var weapon_data_3d = loot_item.get("WeaponData3D")
	var drop_scene_3d = loot_item.get("DropScenePath3D")
	return weapon_data_3d != null or (drop_scene_3d != null and drop_scene_3d != "")

# Override to save the Neither checkbox setting
func _save_filter_settings() -> void:
	super._save_filter_settings()
	
	if not _editor_interface:
		return
	var editor_settings = _editor_interface.get_editor_settings()
	if editor_settings and _show_neither_checkbox:
		editor_settings.set_setting(SETTING_SHOW_NEITHER, _show_neither_checkbox.button_pressed)

func _create_item_tile(loot_item: Resource, has_2d: bool, has_3d: bool) -> void:
	var panel = PanelContainer.new()
	panel.custom_minimum_size = Vector2(100, 145)
	panel.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	panel.size_flags_vertical = Control.SIZE_SHRINK_BEGIN
	panel.mouse_filter = Control.MOUSE_FILTER_STOP
	panel.mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND
	
	var vbox = VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 4)
	vbox.mouse_filter = Control.MOUSE_FILTER_IGNORE
	
	var sprite: Texture2D = loot_item.get("InventorySprite")
	
	var sprite_container = Control.new()
	sprite_container.custom_minimum_size = Vector2(64, 64)
	sprite_container.mouse_filter = Control.MOUSE_FILTER_IGNORE
	vbox.add_child(sprite_container)
	
	var texture_rect = TextureRect.new()
	texture_rect.custom_minimum_size = Vector2(64, 64)
	texture_rect.expand_mode = TextureRect.EXPAND_FIT_WIDTH_PROPORTIONAL
	texture_rect.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	texture_rect.texture_filter = CanvasItem.TEXTURE_FILTER_NEAREST
	texture_rect.mouse_filter = Control.MOUSE_FILTER_IGNORE
	texture_rect.set_anchors_preset(Control.PRESET_FULL_RECT)
	sprite_container.add_child(texture_rect)
	
	if sprite:
		texture_rect.texture = sprite
	else:
		var placeholder_label = Label.new()
		placeholder_label.text = "No Icon"
		placeholder_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
		placeholder_label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
		placeholder_label.mouse_filter = Control.MOUSE_FILTER_IGNORE
		placeholder_label.add_theme_font_size_override("font_size", 10)
		placeholder_label.set_anchors_preset(Control.PRESET_FULL_RECT)
		sprite_container.add_child(placeholder_label)
	
	# Add item type badge in top-left corner with color coding
	var item_type: int = loot_item.get("Item")
	var item_type_color = ITEM_TYPE_COLORS.get(item_type, Color.WHITE)
	var item_type_name = ITEM_TYPE_NAMES[item_type] if item_type < ITEM_TYPE_NAMES.size() else str(item_type)
	
	var type_badge = Label.new()
	type_badge.text = item_type_name
	type_badge.add_theme_font_size_override("font_size", 10)
	type_badge.add_theme_color_override("font_color", item_type_color)
	type_badge.add_theme_color_override("font_outline_color", Color(0.15, 0.15, 0.15))
	type_badge.add_theme_constant_override("outline_size", 3)
	type_badge.horizontal_alignment = HORIZONTAL_ALIGNMENT_LEFT
	type_badge.vertical_alignment = VERTICAL_ALIGNMENT_TOP
	type_badge.mouse_filter = Control.MOUSE_FILTER_IGNORE
	type_badge.position = Vector2(2, 2)
	type_badge.custom_minimum_size = Vector2(60, 12)
	type_badge.clip_text = true
	sprite_container.add_child(type_badge)
	
	# Add 2D/3D/Neither badge in bottom-right corner
	var dimension_badge = Label.new()
	if has_2d and has_3d:
		dimension_badge.text = "2D+3D"
		dimension_badge.add_theme_color_override("font_color", Color(0.8, 0.2, 0.8))  # Purple
	elif has_2d:
		dimension_badge.text = "2D"
		dimension_badge.add_theme_color_override("font_color", Color(0.3, 0.5, 1.0))  # Blue
	elif has_3d:
		dimension_badge.text = "3D"
		dimension_badge.add_theme_color_override("font_color", Color(1.0, 0.2, 0.2))  # Red
	else:
		dimension_badge.text = "??"
		dimension_badge.add_theme_color_override("font_color", Color(1.0, 0.5, 0.0))  # Orange (warning)
	
	dimension_badge.add_theme_font_size_override("font_size", 12)
	dimension_badge.add_theme_color_override("font_outline_color", Color(0.15, 0.15, 0.15))
	dimension_badge.add_theme_constant_override("outline_size", 3)
	dimension_badge.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
	dimension_badge.vertical_alignment = VERTICAL_ALIGNMENT_BOTTOM
	dimension_badge.mouse_filter = Control.MOUSE_FILTER_IGNORE
	dimension_badge.position = Vector2(24, 44)
	dimension_badge.size = Vector2(38, 20)
	sprite_container.add_child(dimension_badge)
	
	var name_label = Label.new()
	var item_name: String = loot_item.get("ItemName")
	name_label.text = item_name if item_name else "Unknown"
	name_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	name_label.vertical_alignment = VERTICAL_ALIGNMENT_TOP
	name_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	name_label.custom_minimum_size = Vector2(92, 48)
	name_label.clip_text = false
	name_label.max_lines_visible = 3
	name_label.mouse_filter = Control.MOUSE_FILTER_IGNORE
	name_label.add_theme_font_size_override("font_size", 14)
	name_label.add_theme_constant_override("line_spacing", -2)
	vbox.add_child(name_label)
	
	panel.add_child(vbox)
	vbox.set_anchors_preset(Control.PRESET_FULL_RECT)
	vbox.add_theme_constant_override("margin_left", 4)
	vbox.add_theme_constant_override("margin_top", 4)
	vbox.add_theme_constant_override("margin_right", 4)
	vbox.add_theme_constant_override("margin_bottom", 4)
	
	var item_path = loot_item.resource_path
	if item_path:
		panel.tooltip_text = item_path
	else:
		panel.tooltip_text = "Built-in resource (no file path)"
	
	panel.gui_input.connect(_on_item_gui_input.bind(panel, loot_item, has_2d, has_3d))
	
	_grid_container.add_child(panel)

func _on_item_clicked(loot_item: Resource, item_path: String) -> void:
	if not _editor_interface:
		push_error("Editor interface not available")
		return
	
	if loot_item:
		_editor_interface.edit_resource(loot_item)
		item_selected.emit(item_path)

func _on_item_gui_input(event: InputEvent, panel: PanelContainer, loot_item: Resource, has_2d: bool, has_3d: bool) -> void:
	if event is InputEventMouseButton:
		var mouse_event = event as InputEventMouseButton
		if mouse_event.pressed:
			if mouse_event.button_index == MOUSE_BUTTON_LEFT:
				var item_path = loot_item.resource_path if loot_item else ""
				_on_item_clicked(loot_item, item_path)
			elif mouse_event.button_index == MOUSE_BUTTON_RIGHT:
				_show_context_menu(panel, loot_item, has_2d, has_3d)

func _show_context_menu(panel: PanelContainer, loot_item: Resource, has_2d: bool, has_3d: bool) -> void:
	var popup = PopupMenu.new()
	popup.add_item("Open Item", 0)
	
	var weapon_data_2d = loot_item.get("WeaponData")
	var weapon_data_3d = loot_item.get("WeaponData3D")
	
	if weapon_data_2d or weapon_data_3d:
		popup.add_separator()
		if weapon_data_2d:
			popup.add_item("Open Weapon (2D)", 1)
		if weapon_data_3d:
			popup.add_item("Open Weapon (3D)", 2)
	
	popup.add_separator()
	popup.add_item("Duplicate Item", 3)
	popup.add_separator()
	popup.add_item("Copy Item Resource Path", 4)
	popup.add_separator()
	popup.add_item("Delete", 5)
	
	popup.id_pressed.connect(_on_context_menu_id_pressed.bind(popup, loot_item))
	
	get_tree().root.add_child(popup)
	
	var mouse_pos = DisplayServer.mouse_get_position()
	popup.position = mouse_pos
	popup.popup()
	
	popup.popup_hide.connect(func(): popup.queue_free())

func _on_context_menu_id_pressed(id: int, popup: PopupMenu, loot_item: Resource) -> void:
	match id:
		0:
			_open_item(loot_item)
		1:
			_open_weapon(loot_item.get("WeaponData"))
		2:
			_open_weapon(loot_item.get("WeaponData3D"))
		3:
			_duplicate_item(loot_item)
		4:
			_copy_item_resource_path(loot_item)
		5:
			_confirm_delete(loot_item)

func _open_item(loot_item: Resource) -> void:
	if not _editor_interface:
		push_error("Editor interface not available")
		return
	
	if loot_item:
		_editor_interface.edit_resource(loot_item)

func _open_weapon(weapon_data: Resource) -> void:
	if not _editor_interface:
		push_error("Editor interface not available")
		return
	
	if weapon_data:
		_editor_interface.edit_resource(weapon_data)

func _duplicate_item(loot_item: Resource) -> void:
	if not _editor_interface:
		push_error("Editor interface not available")
		return
	
	var item_name = loot_item.get("ItemName") if loot_item else "Unknown"
	
	_log_to_dock("=== Duplicating Item ===", Color.CYAN)
	_log_to_dock("Source: " + item_name, Color.CYAN)
	_log_to_dock("Opening creation dialog with prefilled data...", Color.CYAN)
	
	print("Duplicating item: ", item_name)
	
	item_duplication_started.emit(item_name)
	
	var prefill_data = {}
	
	if loot_item:
		prefill_data["item_name"] = loot_item.get("ItemName")
		prefill_data["item_key"] = loot_item.get("ItemKey")
		prefill_data["short_name"] = loot_item.get("ShortName")
		prefill_data["description"] = loot_item.get("ItemDescription")
		prefill_data["sprite_resource"] = loot_item.get("InventorySprite")
		prefill_data["item_type"] = loot_item.get("Item")
		prefill_data["tier"] = loot_item.get("Tier")
		prefill_data["price"] = loot_item.get("Price")
		prefill_data["amount"] = loot_item.get("Amount")
		prefill_data["max"] = loot_item.get("Max")
		prefill_data["pickup_if_maxed"] = loot_item.get("PickupIfMaxed")
		prefill_data["consume_on_use"] = loot_item.get("ConsumeOnUse")
		prefill_data["selectable"] = loot_item.get("Selectable")
	
	var dialog_script = load("res://addons/weapon_creator/ItemCreatorDialog.gd")
	var dialog = Window.new()
	dialog.set_script(dialog_script)
	
	get_tree().root.add_child(dialog)
	
	dialog.call_deferred("setup", _editor_interface, prefill_data)
	dialog.call_deferred("connect", "item_data_confirmed", _on_duplicate_item_confirmed)
	dialog.call_deferred("popup_centered")

func _on_duplicate_item_confirmed(item_data: Dictionary) -> void:
	duplicate_item_requested.emit(item_data)
	get_tree().create_timer(0.5).timeout.connect(refresh)

func _copy_item_resource_path(loot_item: Resource) -> void:
	if loot_item and loot_item.resource_path:
		DisplayServer.clipboard_set(loot_item.resource_path)
		print("Copied item resource path: ", loot_item.resource_path)
	else:
		push_warning("No resource path available for item (built-in resource)")

func _confirm_delete(loot_item: Resource) -> void:
	var item_name: String = loot_item.get("ItemName")
	var loot_item_path = loot_item.resource_path
	
	var dialog_text = "Are you sure you want to delete this item?\n\n"
	dialog_text += "Item: " + (item_name if item_name else "Unknown") + "\n\n"
	dialog_text += "This will delete:\n"
	dialog_text += "- LootItem: " + (loot_item_path if loot_item_path else "Built-in") + "\n"
	dialog_text += "- Remove the item from ItemsDatabase\n\n"
	dialog_text += "Note: This will NOT delete any linked weapon resources or drop scenes.\n"
	dialog_text += "This action cannot be undone!"
	
	var confirm_dialog = ConfirmationDialog.new()
	confirm_dialog.dialog_text = dialog_text
	confirm_dialog.title = "Confirm Deletion"
	confirm_dialog.ok_button_text = "Delete"
	
	confirm_dialog.confirmed.connect(_perform_delete.bind(loot_item, confirm_dialog))
	confirm_dialog.close_requested.connect(func(): confirm_dialog.queue_free())
	confirm_dialog.canceled.connect(func(): confirm_dialog.queue_free())
	
	get_tree().root.add_child(confirm_dialog)
	confirm_dialog.popup_centered()

func _perform_delete(loot_item: Resource, dialog: ConfirmationDialog) -> void:
	var loot_item_path = loot_item.resource_path
	var item_name = loot_item.get("ItemName") if loot_item else "Unknown"
	
	if not loot_item_path:
		push_error("Cannot delete built-in resources")
		dialog.queue_free()
		return
	
	var items_database = load(_items_database_path)
	if not items_database:
		push_error("Failed to load ItemsDatabase")
		dialog.queue_free()
		return
	
	var loot_items = items_database.get("LootItems")
	if not loot_items:
		push_error("No LootItems found in database")
		dialog.queue_free()
		return
	
	var index = loot_items.find(loot_item)
	if index >= 0:
		loot_items.remove_at(index)
		var save_result = ResourceSaver.save(items_database, _items_database_path)
		if save_result != OK:
			push_error("Failed to save ItemsDatabase after removing item")
	
	var file_system = _editor_interface.get_resource_filesystem()
	
	var item_deleted_success = false
	
	if DirAccess.remove_absolute(loot_item_path) == OK:
		print("Deleted loot item resource: ", loot_item_path)
		item_deleted_success = true
	else:
		push_error("Failed to delete loot item resource: ", loot_item_path)
	
	if file_system:
		file_system.scan()
	
	dialog.queue_free()
	
	if item_deleted_success:
		item_deleted.emit(item_name, loot_item_path)
		
		if _dock:
			_dock.call("add_log", "=== Item Deleted ===", Color.ORANGE)
			_dock.call("add_log", "Item: " + item_name, Color.ORANGE)
			_dock.call("add_log", "✓ Deleted LootItem: " + loot_item_path, Color.GREEN)
			_dock.call("add_log", "✓ Removed from ItemsDatabase", Color.GREEN)
			_dock.call("add_log", "Note: Linked assets were NOT deleted", Color.YELLOW)
	
	refresh()

func _on_create_item_pressed() -> void:
	if not _editor_interface:
		push_error("Editor interface not available")
		return
	
	var dialog_script = load("res://addons/weapon_creator/ItemCreatorDialog.gd")
	var dialog = Window.new()
	dialog.set_script(dialog_script)
	
	get_tree().root.add_child(dialog)
	
	dialog.call_deferred("setup", _editor_interface)
	dialog.call_deferred("connect", "item_data_confirmed", _on_duplicate_item_confirmed)
	dialog.call_deferred("popup_centered")