@tool
extends PanelContainer


@onready var grid: DashboardGrid = %DashboardGrid

var _tile_instances: Array[Control] = []


func _ready() -> void:
	_set_background()
	if not Engine.is_editor_hint():
		_load_tiles_from_plugins()


func _set_background() -> void:
	var bg: StyleBoxFlat
	if ConfigManager.has_method("get_color"):
		bg = StyleBoxFlat.new()
		bg.bg_color = ConfigManager.get_color("background_color", Color(0.08, 0.08, 0.12))
	else:
		bg = StyleBoxFlat.new()
		bg.bg_color = Color(0.08, 0.08, 0.12)
	add_theme_stylebox_override("panel", bg)


func _load_tiles_from_plugins() -> void:
	if not PluginManager.has_method("get_all_tile_defs"):
		return

	var all_tile_defs: Array[Dictionary] = PluginManager.get_all_tile_defs()
	if all_tile_defs.is_empty():
		return

	# Load saved layout (if any)
	var layout_data: Dictionary = {}
	if LayoutManager.has_method("get_layout"):
		layout_data = LayoutManager.get_layout()

	# Track which tile_defs we've placed
	var placed_ids: Array[String] = []

	# First pass: place tiles that have a saved layout position
	for tid in layout_data:
		var pos: Dictionary = layout_data[tid]
		var def := _find_tile_def(all_tile_defs, tid)
		if def.is_empty():
			continue
		var instance := PluginManager.instantiate_tile(tid)
		if instance == null:
			continue
		grid.place_module(instance, pos.col, pos.row, pos.w, pos.h)
		_tile_instances.append(instance)
		placed_ids.append(tid)

	# Second pass: place any remaining tile_defs at default positions
	# Find the next free grid column
	var next_col: int = 0
	var next_row: int = 0
	if not placed_ids.is_empty():
		var gs := grid.get_grid_size()
		next_col = gs.x
		next_row = 0

	for def in all_tile_defs:
		if def.id in placed_ids:
			continue
		var instance := PluginManager.instantiate_tile(def.id)
		if instance == null:
			continue
		grid.place_module(instance, next_col, next_row, def.default_w, def.default_h)
		_tile_instances.append(instance)
		placed_ids.append(def.id)

		# Bump default insertion point
		next_col += def.default_w
		var gs := grid.get_grid_size()
		if next_col >= gs.x and gs.x > 0:
			next_col = 0
			next_row = gs.y

	# Connect auto-save signals
	grid.module_placed.connect(_save_layout)
	if grid.has_signal("module_resized"):
		grid.module_resized.connect(_save_layout)

	# Start refresh timer
	_start_refresh_timer()


func _start_refresh_timer() -> void:
	var interval: float = 1.0
	if ConfigManager.has_method("get_setting"):
		var val: Variant = ConfigManager.get_setting("performance_refresh_interval", 1.0)
		if typeof(val) == TYPE_FLOAT or typeof(val) == TYPE_INT:
			interval = float(val)

	var timer := Timer.new()
	timer.timeout.connect(_refresh_modules)
	timer.autostart = true
	timer.wait_time = interval
	add_child(timer)


func _refresh_modules() -> void:
	var data: Dictionary = {}
	for mod in _tile_instances:
		if is_instance_valid(mod) and mod.has_method("refresh"):
			mod.refresh(data)


func _save_layout(_mod: Control = null, _a: int = 0, _b: int = 0) -> void:
	if not LayoutManager.has_method("set_tile_position"):
		return

	# Walk all modules in the grid and store their positions
	var gs := grid.get_grid_size()
	for r in range(gs.y):
		for c in range(gs.x):
			var mod := grid.get_module_at(c, r)
			if mod == null:
				continue
			var tid: String = mod.get_meta("tile_id", "")
			if tid.is_empty():
				continue
			var d := _get_module_grid_data(mod)
			LayoutManager.set_tile_position(tid, d.col, d.row, d.w, d.h)

	LayoutManager.save_layout()


## Mirror of DashboardGrid._get_module_grid_data for layout saving.
func _get_module_grid_data(module: Control) -> Dictionary:
	return {
		col = module.get_meta("grid_col", 0),
		row = module.get_meta("grid_row", 0),
		w = module.get_meta("grid_w", 1),
		h = module.get_meta("grid_h", 1),
	}


## Find a tile def by scoped tile_id.
func _find_tile_def(defs: Array[Dictionary], tile_id: String) -> Dictionary:
	for d in defs:
		if d.get("id", "") == tile_id:
			return d
	return {}