package aes

const (
	KeyESC = '\x1B'
)

const (
	// Start.
	ESC = "\x1B"

	// Control sequence introducer.
	CSI = ESC+"["

	// Device control string.
	DCS = ESC+"P"

	// Operating system command.
	OSC = ESC+"]"
)

// Special control sequences.
const (
	BEL = "\a"
	BS = "\b"
	HT = "\t"
	LF = "\n"
	VT = "\v"
	FF = "\f"
	CR = "\r"
	DEL = "\x7F"
)

// Erasing control sequences.
// Names are self describing.
const (
	EraseInDisplay = CSI+"J"
	EraseFromCursorToEndOfScreen = CSI+"0J"
	EraseFromCursorToBeginOfScreen = CSI+"1J"
	EraseEntireScreen = CSI+"2J"
	EraseSavedLines = CSI+"3J"
	EraseInLine = CSI+"K"
	EraseFromCursorToEndOfLine = CSI+"0K"
	EraseFromStartOfLineToCursor = CSI+"1K"
	EraseEntireLine = CSI+"2K"
)

// Cursor control sequences.
// Any that ends with the "Format" means that
// the format is meant to be used via fmt.Sprintf
// or any fitting function to provide arguments
// into the escape code.
const (
	MoveCursorHome = CSI+"H"

	// Line, column (both int).
	MoveCursorToFormat = CSI+"%d;%dH"
	SecondaryMoveCursorToFormat = CSI+"%d;%df"
	MoveCursorUpFormat = CSI+"%dA"
	MoveCursorDownFormat = CSI+"%dB"
	MoveCursorRightFormat = CSI+"%dC"
	MoveCursorLeftFormat = CSI+"%dD"
	MoveCursorToBeginOfNextLineDownFormat = CSI+"%dE"
	MoveCursorToBeginOfPrevLineUpFormat = CSI+"%dF"
	MoveCursorToColumnFormat = CSI+"%dG"

	RequestCursorPositionReportFormat =CSI+"%d;%dR"
	RequestCursorPosition = CSI+"6n"

	SaveCursorPositionDEC = ESC+" 7"
	UndoCursorPositionDEC = ESC+" 8"

	SaveCursorPositionSCO = CSI+"s"
	UndoCursorPositionSCO = CSI+"u"
)

// Common private modes.
const (
	MakeCursorInvisible = CSI+"?25l"
	MakeCursorVisible = CSI+"?25h"

	UndoScreen = CSI+"?47l"
	SaveScreen = CSI+"?47h"

	EnableAltBuffer = CSI+"?1049h"
	DisableAltBuffer = CSI+"?1049l"
)