extends Control
## Standalone Phase 4 review. F6, or run this scene with -- --capture.

const STAGE: Script = preload("res://tools/model_gallery_stage.gd")
const MANIFEST: String = "res://assets/phase4_manifest.json"
const FACTIONS: Dictionary = {
	"all": "Alle Modelle", "glutpakt": "Glutpakt", "nietenkonvent": "Nietenkonvent",
	"nebelchor": "Nebelchor", "wurzelbund": "Wurzelbund", "neutral": "Söldner & Arbeiter",
	"environment": "Spielfeld & Saumkerne", "rift": "Risskreaturen"
}
const ROLES: Dictionary = {
	"melee": "Nahkampf", "tank": "Tank", "ranged": "Fernkampf",
	"artillery": "Artillerie", "support": "Unterstützung", "mercenary": "Söldner",
	"enemy": "Wellengegner", "worker": "Arbeiter", "lane": "Lane-Segment", "core": "Saumkern"
}

var _assets: Array[Dictionary] = []
var _filtered: Array[Dictionary] = []
var _icon_paths: Dictionary = {}
var _faction_select: OptionButton
var _asset_select: OptionButton
var _title: Label
var _details: Label
var _icon: TextureRect
var _reference_note: Label
var _auto_rotate: CheckButton
var _view: Dictionary = {}


func _ready() -> void:
	set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	if "--compare" in OS.get_cmdline_user_args():
		var comparison_script: Script = load("res://tools/model_reference_sheet.gd") as Script
		add_child(comparison_script.new())
		return
	if "--capture" in OS.get_cmdline_user_args():
		var capture_script: Script = load("res://tools/model_contact_sheet.gd") as Script
		var capture: Node = capture_script.new() as Node
		add_child(capture)
		return
	_load_catalog()
	_build_interface()
	_filter_assets(0)


func _load_catalog() -> void:
	if not FileAccess.file_exists(MANIFEST):
		push_error("Phase 4 manifest missing. Export and import models first.")
		return
	var data: Variant = JSON.parse_string(FileAccess.get_file_as_string(MANIFEST))
	if data is Dictionary:
		for value: Variant in data.get("assets", []):
			if value is Dictionary:
				_assets.append(value)
	var icon_manifest: String = "res://assets/phase3_manifest.json"
	if FileAccess.file_exists(icon_manifest):
		var icons: Variant = JSON.parse_string(FileAccess.get_file_as_string(icon_manifest))
		if icons is Dictionary:
			for value: Variant in icons.get("assets", []):
				if value is Dictionary:
					_icon_paths[str(value.get("id", ""))] = str(value.get("resource_path", ""))


func _build_interface() -> void:
	var backdrop: ColorRect = ColorRect.new()
	backdrop.color = Color("11151b")
	backdrop.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	backdrop.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(backdrop)
	var margin: MarginContainer = MarginContainer.new()
	margin.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	for edge: String in ["left", "top", "right", "bottom"]:
		margin.add_theme_constant_override("margin_" + edge, 24)
	add_child(margin)
	var layout: VBoxContainer = VBoxContainer.new()
	layout.add_theme_constant_override("separation", 18)
	margin.add_child(layout)
	var heading: Label = _label("SAUMWACHT  /  3D-WERKSTATT", 27, Color("ddc898"))
	layout.add_child(heading)
	layout.add_child(_label("%d Modelle  ·  Glutpakt und Risskreaturen in hoher Detailstufe" % _assets.size(), 17, Color("a8b0bd")))
	var body: HBoxContainer = HBoxContainer.new()
	body.size_flags_vertical = Control.SIZE_EXPAND_FILL
	body.add_theme_constant_override("separation", 24)
	layout.add_child(body)
	var sidebar: VBoxContainer = VBoxContainer.new()
	sidebar.custom_minimum_size.x = 320
	sidebar.add_theme_constant_override("separation", 14)
	body.add_child(sidebar)
	sidebar.add_child(_label("FRAKTION", 13, Color("c4b58f")))
	_faction_select = OptionButton.new()
	_faction_select.custom_minimum_size.y = 42
	_faction_select.add_theme_font_size_override("font_size", 18)
	for key: String in FACTIONS:
		_faction_select.add_item(FACTIONS[key])
		_faction_select.set_item_metadata(_faction_select.item_count - 1, key)
	_faction_select.item_selected.connect(_filter_assets)
	sidebar.add_child(_faction_select)
	sidebar.add_child(_label("MODELL", 13, Color("c4b58f")))
	_asset_select = OptionButton.new()
	_asset_select.custom_minimum_size.y = 42
	_asset_select.add_theme_font_size_override("font_size", 17)
	_asset_select.fit_to_longest_item = false
	_asset_select.item_selected.connect(_select_asset)
	sidebar.add_child(_asset_select)
	_title = _label("", 24, Color("f1e8d6"))
	_title.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	sidebar.add_child(_title)
	_details = _label("", 16, Color("b8bfca"))
	_details.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	sidebar.add_child(_details)
	_icon = TextureRect.new()
	_icon.custom_minimum_size = Vector2(256, 200)
	_icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	_icon.size_flags_vertical = Control.SIZE_EXPAND_FILL
	sidebar.add_child(_icon)
	_reference_note = _label("Iconreferenz · Phase 3", 14, Color("8e99aa"))
	sidebar.add_child(_reference_note)
	_auto_rotate = CheckButton.new()
	_auto_rotate.text = "Automatisch drehen"
	_auto_rotate.add_theme_font_size_override("font_size", 16)
	sidebar.add_child(_auto_rotate)
	var reset: Button = Button.new()
	reset.text = "Ansicht zurücksetzen"
	reset.custom_minimum_size.y = 38
	reset.pressed.connect(_reset_view)
	sidebar.add_child(reset)
	var preview_box: PanelContainer = PanelContainer.new()
	preview_box.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	preview_box.size_flags_vertical = Control.SIZE_EXPAND_FILL
	body.add_child(preview_box)
	_view = STAGE.create(preview_box, Vector2(520, 480))
	var container: SubViewportContainer = _view["container"] as SubViewportContainer
	container.gui_input.connect(_on_preview_input)
	layout.add_child(_label("Ziehen: Modell drehen   ·   Mausrad: Zoom   ·   Originalmodelle bleiben unverändert", 15, Color("939dab")))


func _label(text: String, font_size: int, color: Color) -> Label:
	var result: Label = Label.new()
	result.text = text
	result.add_theme_font_size_override("font_size", font_size)
	result.add_theme_color_override("font_color", color)
	return result


func _filter_assets(index: int) -> void:
	_filtered.clear()
	_asset_select.clear()
	var faction: String = str(_faction_select.get_item_metadata(index))
	for asset: Dictionary in _assets:
		var matches: bool = faction == "all" or str(asset.get("faction", "")) == faction
		if faction == "environment":
			matches = str(asset.get("role", "")) in ["lane", "core"]
		if matches:
			_filtered.append(asset)
			_asset_select.add_item(str(asset["id"]).to_upper() + " · " + str(asset["name"]))
	if not _filtered.is_empty():
		_asset_select.select(0)
		_select_asset(0)
	else:
		_title.text = "Keine Modelle vorhanden"
		_details.text = "Blender-Export und Godot-Import zuerst ausführen."
		_icon.texture = null


func _select_asset(index: int) -> void:
	if index < 0 or index >= _filtered.size():
		return
	var asset: Dictionary = _filtered[index]
	_title.text = str(asset["name"])
	var role: String = str(asset.get("role", ""))
	var bounds: Dictionary = asset.get("bounds_godot", {})
	var low: Array = bounds.get("min", [0, 0, 0])
	var high: Array = bounds.get("max", [0, 0, 0])
	var dimensions: Vector3 = Vector3(float(high[0])-float(low[0]), float(high[1])-float(low[1]), float(high[2])-float(low[2]))
	_details.text = "%s  ·  %s\n%d Dreiecke\nB %.2f m  ·  H %.2f m  ·  T %.2f m" % [
		str(asset["id"]).to_upper(), str(ROLES.get(role, role)), int(asset.get("triangles", 0)),
		dimensions.x, dimensions.y, dimensions.z]
	var icon_id: String = str(asset["id"])
	if icon_id == "worker":
		icon_id = "worker_funkenleser"
	var icon_path: String = str(_icon_paths.get(icon_id, ""))
	_icon.texture = load(icon_path) as Texture2D if not icon_path.is_empty() else null
	_reference_note.visible = _icon.texture != null
	if not STAGE.show_asset(_view, asset):
		_details.text += "\nModell konnte nicht geladen werden."
	_reset_view()


func _process(delta: float) -> void:
	if _auto_rotate != null and _auto_rotate.button_pressed and not _view.is_empty():
		var turntable: Node3D = _view["turntable"] as Node3D
		turntable.rotate_y(delta * 0.38)


func _reset_view() -> void:
	if _view.is_empty():
		return
	var turntable: Node3D = _view["turntable"] as Node3D
	var camera: Camera3D = _view["camera"] as Camera3D
	turntable.rotation = Vector3.ZERO
	camera.size = 2.9


func _on_preview_input(event: InputEvent) -> void:
	var camera: Camera3D = _view["camera"] as Camera3D
	var turntable: Node3D = _view["turntable"] as Node3D
	if event is InputEventMouseButton and event.pressed:
		if event.button_index == MOUSE_BUTTON_WHEEL_UP:
			camera.size = clampf(camera.size * 0.90, 1.6, 5.5)
		elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
			camera.size = clampf(camera.size * 1.10, 1.6, 5.5)
	if event is InputEventMouseMotion and Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT):
		_auto_rotate.button_pressed = false
		turntable.rotate_y(event.relative.x * 0.008)