extends SceneTree

# Diagnostic - NOT run by run_tests.sh (underscore prefix). Prints what the
# project's font settings actually resolve to at runtime, and measures real
# string widths, so UI boxes can be sized from measurements instead of
# guessed character widths.
#
#   godot --headless -s res://tests/_font_probe.gd


func _initialize() -> void:
	print("gui/theme/default_font_size setting = %s" % ProjectSettings.get_setting("gui/theme/default_font_size", "<unset>"))
	print("gui/theme/custom                    = '%s'" % ProjectSettings.get_setting("gui/theme/custom", ""))
	print("gui/theme/custom_font               = '%s'" % ProjectSettings.get_setting("gui/theme/custom_font", ""))

	var scene: Node = load("res://Main.tscn").instantiate()
	root.add_child(scene)

	for path in ["UI/BuildMenu/InfoPopup/Panel/TitleLabel",
			"UI/BuildMenu/InfoPopup/Panel/MessageLabel",
			"UI/BuildMenu/MothershipLabel",
			"UI/BuildMenu/TitleLabel",
			"UI/NavLabel"]:
		var label: Label = scene.get_node_or_null(path)
		if label == null:
			print("%s: MISSING" % path)
			continue
		# The theme item is "font_size"; "font" is the typeface item. Asking
		# for the wrong one silently returns the engine fallback (16) and
		# hides both the project setting and any per-node override.
		var size: int = label.get_theme_font_size("font_size")
		var font: Font = label.get_theme_font("font")
		var sample: String = "Fleet home port. A wiped-out fleet rebuilds here."
		var width: float = font.get_string_size(sample, HORIZONTAL_ALIGNMENT_LEFT, -1, size).x
		print("%-46s effective size=%d  box=%s  48-char sample is %.0fpx wide (%.1f px/char), line height %.0f" % [
			path, size, label.size, width, width / float(sample.length()), font.get_height(size)
		])

	quit(0)