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+@tool
+class_name GdUnitMessageWriter
+extends RefCounted
+## Base interface class for writing formatted messages to different outputs.[br]
+## [br]
+## This class defines the interface and common functionality for writing formatted messages.[br]
+## It provides a fluent API for message formatting and supports different output targets.[br]
+## [br]
+## The class provides formatting options for:[br]
+## - Text colors[br]
+## - Text styles (bold, italic, underline)[br]
+## - Text effects (e.g., wave)[br]
+## - Text alignment[br]
+## - Indentation[br]
+## [br]
+## Two concrete implementations are available:[br]
+## - [GdUnitRichTextMessageWriter] writing to a [RichTextLabel][br]
+## - [GdUnitCSIMessageWriter] writing to console using CSI codes[br]
+## [br]
+## Example usage:[br]
+## [codeblock]
+## writer.color(Color.RED).style(BOLD).println_message("Test failed!")
+## writer.color(Color.GREEN).align(Align.RIGHT).print_at("Success", 80)
+## [/codeblock]
+
+
+## Text style flag for bold formatting
+const BOLD = 0x1
+## Text style flag for italic formatting
+const ITALIC = 0x2
+## Text style flag for underline formatting
+const UNDERLINE = 0x4
+
+
+## Represents special text effects that can be applied to the output
+enum Effect {
+	## No special effect applied
+	NONE,
+	## Applies a wave animation to the text
+	WAVE
+}
+
+
+## Controls text alignment at the specified cursor position
+enum Align {
+	## Aligns text to the left of the cursor position
+	LEFT,
+	## Aligns text to the right of the cursor position, accounting for text length
+	RIGHT
+}
+
+
+## The current text color to be used for the next output operation
+var _current_color := Color.WHITE
+
+## The current indentation level to be used for the next output operation.[br]
+## Each level represents two spaces of indentation.
+var _current_indent := 0
+
+## The current text style flags (BOLD, ITALIC, UNDERLINE) to be used for the next output operation
+var _current_flags := 0
+
+## The current text alignment to be used for the next output operation
+var _current_align := Align.LEFT
+
+## The current text effect to be used for the next output operation
+var _current_effect := GdUnitMessageWriter.Effect.NONE
+
+
+## Sets the text color for the next output operation.[br]
+## [br]
+## [param value] The color to be used for the text.
+## Returns self for method chaining.
+func color(value: Color) -> GdUnitMessageWriter:
+	_current_color = value
+	return self
+
+
+## Sets the indentation level for the next output operation.[br]
+## [br]
+## [param value] The number of indentation levels, where each level equals two spaces.
+## Returns self for method chaining.
+func indent(value: int) -> GdUnitMessageWriter:
+	_current_indent = value
+	return self
+
+
+## Sets text style flags for the next output operation.[br]
+## [br]
+## [param value] A combination of style flags (BOLD, ITALIC, UNDERLINE).
+## Returns self for method chaining.
+func style(value: int) -> GdUnitMessageWriter:
+	_current_flags = value
+	return self
+
+
+## Sets text effect for the next output operation.[br]
+## [br]
+## [param value] The effect to apply to the text (NONE, WAVE).
+## Returns self for method chaining.
+func effect(value: GdUnitMessageWriter.Effect) -> GdUnitMessageWriter:
+	_current_effect = value
+	return self
+
+
+## Sets text alignment for the next output operation.[br]
+## [br]
+## [param value] The alignment to use (LEFT, RIGHT).
+## Returns self for method chaining.
+func align(value: Align) -> GdUnitMessageWriter:
+	_current_align = value
+	return self
+
+
+## Resets all formatting options to their default values.[br]
+## [br]
+## Defaults:[br]
+## - color: Color.WHITE[br]
+## - indent: 0[br]
+## - flags: 0[br]
+## - align: LEFT[br]
+## - effect: NONE[br]
+## Returns self for method chaining.
+func reset() -> GdUnitMessageWriter:
+	_current_color = Color.WHITE
+	_current_indent = 0
+	_current_flags = 0
+	_current_align = Align.LEFT
+	_current_effect = Effect.NONE
+	return self
+
+
+## Prints a warning message in golden color.[br]
+## [br]
+## [param message] The warning message to print.
+func prints_warning(message: String) -> void:
+	color(Color.GOLDENROD).println_message(message)
+
+
+## Prints an error message in crimson color.[br]
+## [br]
+## [param message] The error message to print.
+func prints_error(message: String) -> void:
+	color(Color.CRIMSON).println_message(message)
+
+
+## Prints a message with current formatting settings.[br]
+## [br]
+## [param message] The text to print.
+func print_message(message: String) -> void:
+	_print_message(message, _current_color, _current_indent, _current_flags)
+	reset()
+
+
+## Prints a message with current formatting settings followed by a newline.[br]
+## [br]
+## [param message] The text to print.
+func println_message(message: String) -> void:
+	_println_message(message, _current_color, _current_indent, _current_flags)
+	reset()
+
+
+## Prints a message at a specific column position with current formatting settings.[br]
+## [br]
+## [param message] The text to print.[br]
+## [param cursor_pos] The column position where the text should start.
+func print_at(message: String, cursor_pos: int) -> void:
+	_print_at(message, cursor_pos, _current_color, _current_effect, _current_align, _current_flags)
+	reset()
+
+
+## Internal implementation of print_message.[br]
+## [br]
+## To be overridden by concrete formatters.[br]
+## [br]
+## [param message] The text to print.[br]
+## [param color] The color to use.[br]
+## [param indent] The indentation level.[br]
+## [param flags] The style flags to apply.
+func _print_message(_message: String, _color: Color, _indent: int, _flags: int) -> void:
+	pass
+
+
+## Internal implementation of println_message.[br]
+## [br]
+## To be overridden by concrete formatters.[br]
+## [br]
+## [param message] The text to print.[br]
+## [param color] The color to use.[br]
+## [param indent] The indentation level.[br]
+## [param flags] The style flags to apply.
+func _println_message(_message: String, _color: Color, _indent: int, _flags: int) -> void:
+	pass
+
+
+## Internal implementation of print_at.[br]
+## [br]
+## To be overridden by concrete formatters.[br]
+## [br]
+## [param message] The text to print.[br]
+## [param cursor_pos] The column position.[br]
+## [param color] The color to use.[br]
+## [param effect] The effect to apply.[br]
+## [param align] The text alignment.[br]
+## [param flags] The style flags to apply.
+func _print_at(_message: String, _cursor_pos: int, _color: Color, _effect: GdUnitMessageWriter.Effect, _align: Align, _flags: int) -> void:
+	pass
+
+
+## Clears all output content.[br]
+## [br]
+## To be overridden by concrete formatters.
+func clear() -> void:
+	pass