tty2oled

const (
	// Handshake command
	CmdHandshake = "QWERTZ"

	// Core display commands
	CmdCore       = "CMDCOR"   // CMDCOR,<corename>,<transition>
	CmdText       = "CMDTXT"   // CMDTXT,<font>,<color>,<bgcolor>,<x>,<y>,<text>
	CmdShowName   = "CMDSNAM"  // CMDSNAM - show centered system name (uses actCorename)
	CmdClearShow  = "CMDCLS"   // CMDCLS - clear display and update
	CmdClearNoUpd = "CMDCLSWU" // CMDCLSWU - clear display without update
	CmdContrast   = "CMDCON"   // CMDCON,<contrast>
	CmdRotate     = "CMDROT"   // CMDROT,1
	CmdOrgLogo    = "CMDSORG"  // CMDSORG - show original logo after rotation
	CmdClear      = "CMDCLEAR" // Clear display (custom command - deprecated)

	// Screensaver commands
	CmdScreensaver = "CMDSAVER" // CMDSAVER,<mode>,<interval>,<start>

	// Time/RTC commands
	CmdSetTime = "CMDSETTIME" // CMDSETTIME,<timestamp>

	// Hardware info command
	CmdHardwareInfo = "CMDHWINF" // CMDHWINF - request hardware info
)

const (
	// Transition effects
	TransitionAuto  = "-1" // Auto transition (shell script default)
	TransitionNone  = "0"
	TransitionSlide = "1"
	TransitionFade  = "2"

	// Contrast levels (0-255)
	ContrastMin     = 0
	ContrastMax     = 255
	ContrastDefault = 128

	// Screensaver modes (legacy - for backward compatibility)
	ScreensaverOff   = "0"
	ScreensaverClock = "1"
	ScreensaverBlank = "2"
	ScreensaverLogo  = "3"

	// Communication settings
	CommandTerminator = "\n"
	WaitDuration      = 200 * time.Millisecond // Shell script WAITSECS=0.2
)

const (
	// Rotation settings
	DefaultRotation = false // false = normal, true = 180° flipped

	// Enhanced transitions
	DefaultTransition = TransitionAuto

	// Screensaver mode flags (bitwise OR combinations)
	ScreensaverModeTTY2OLED = 1  // Show tty2oled logo
	ScreensaverModeMister   = 2  // Show MiSTer logo
	ScreensaverModeCore     = 4  // Show core name
	ScreensaverModeTime     = 8  // Show time
	ScreensaverModeDate     = 16 // Show date
	ScreensaverModeStars    = 32 // Starfield animation
	ScreensaverModeToast    = 64 // Flying toaster animation

	// Screensaver timing (from shell script defaults)
	DefaultScreensaverStart    = 120 // Start after 120 seconds
	DefaultScreensaverInterval = 10  // 10 second intervals
	DefaultScreensaverMode     = ScreensaverModeTTY2OLED | ScreensaverModeMister |
		ScreensaverModeCore | ScreensaverModeTime |
		ScreensaverModeDate | ScreensaverModeStars | ScreensaverModeToast

	// Additional timing delays
	SleepModeDelay = 2 * time.Second // SLEEPMODEDELAY="2"
)