module Sound.SC3.Server.Process.Options where

import Data.Accessor                        (Accessor)
import Sound.SC3.Server.Process.Accessor    (deriveAccessors)

-- | Used with the 'verbosity' field in 'ServerOptions'.
data Verbosity =
    Silent
  | Quiet
  | Normal
  | Verbose
  | VeryVerbose
  | ExtremelyVerbose
  deriving (Eq, Read, Show)

-- 'Enum' instance for 'Verbosity' for conversion to a commandline option.
instance Enum (Verbosity) where
    fromEnum Silent             = -2
    fromEnum Quiet              = -1
    fromEnum Normal             =  0
    fromEnum Verbose            =  1
    fromEnum VeryVerbose        =  2
    fromEnum ExtremelyVerbose   =  4

    toEnum (-1)                 = Quiet
    toEnum 0                    = Normal
    toEnum 1                    = Verbose
    toEnum 2                    = VeryVerbose
    toEnum x | x >= 4           = ExtremelyVerbose
    toEnum _                    = Silent

-- ====================================================================
-- * Server options

-- | Specify general server options used both in realtime and non-realtime
-- mode.
data ServerOptions = ServerOptions {
    serverProgram               :: FilePath,    -- ^ Path to the @scsynth@ program
    numberOfControlBusChannels  :: Int,         -- ^ Number of allocated control bus channels
    numberOfAudioBusChannels    :: Int,         -- ^ Number of allocated audio bus channels
    numberOfInputBusChannels    :: Int,         -- ^ Number of physical input channels
    numberOfOutputBusChannels   :: Int,         -- ^ Number of physical output channels
    blockSize                   :: Int,         -- ^ Synthesis block size
    numberOfSampleBuffers       :: Int,         -- ^ Number of allocated sample buffers
    maxNumberOfNodes            :: Int,         -- ^ Maximum number of synthesis nodes
    maxNumberOfSynthDefs        :: Int,         -- ^ Maximum number of synth definitions
    realtimeMemorySize          :: Int,         -- ^ Realtime memory size in bytes
    numberOfWireBuffers         :: Int,         -- ^ Number of unit generator connection buffers
    numberOfRandomSeeds         :: Int,         -- ^ Number of random number generator seeds
    loadSynthDefs               :: Bool,        -- ^ If 'True', load synth definitions from /synthdefs/ directory on startup
    verbosity                   :: Verbosity   -- ^ 'Verbosity' level
} deriving (Eq, Show)

-- | Default server options.
defaultServerOptions :: ServerOptions
defaultServerOptions = ServerOptions {
    serverProgram              = "scsynth",
    numberOfControlBusChannels = 4096,
    numberOfAudioBusChannels   = 128,
    numberOfInputBusChannels   = 8,
    numberOfOutputBusChannels  = 8,
    blockSize                  = 64,
    numberOfSampleBuffers      = 1024,
    maxNumberOfNodes           = 1024,
    maxNumberOfSynthDefs       = 1024,
    realtimeMemorySize         = 8192,
    numberOfWireBuffers        = 64,
    numberOfRandomSeeds        = 64,
    loadSynthDefs              = True,
    verbosity                  = Normal
}

$(deriveAccessors ''ServerOptions)

{-# DEPRECATED realTimeMemorySize "Use `realtimeMemorySize' instead" #-}
realTimeMemorySize :: ServerOptions -> Int
realTimeMemorySize = realtimeMemorySize

{-# DEPRECATED _realTimeMemorySize "Use `_realtimeMemorySize' instead" #-}
_realTimeMemorySize :: Accessor ServerOptions Int
_realTimeMemorySize = _realtimeMemorySize

-- ====================================================================
-- * Realtime options

-- | Realtime server options, parameterized by the OpenSoundControl
-- 'Transport' to be used.
data RTOptions = RTOptions {
    -- Network control
    udpPortNumber           :: Int,             -- ^ UDP port number (one of 'udpPortNumber' and 'tcpPortNumber' must be non-zero)
    tcpPortNumber           :: Int,             -- ^ TCP port number (one of 'udpPortNumber' and 'tcpPortNumber' must be non-zero)
    useZeroconf             :: Bool,            -- ^ If 'True', publish scsynth service through Zeroconf
    maxNumberOfLogins       :: Int,             -- ^ Max number of supported logins if 'sessionPassword' is set
    sessionPassword         :: Maybe String,    -- ^ Session password
    -- Audio device control
    hardwareDeviceName      :: Maybe String,    -- ^ Hardware device name (JACK client:server name on Linux)
    hardwareBufferSize      :: Int,             -- ^ Hardware buffer size (no effect with JACK)
    hardwareSampleRate      :: Int,             -- ^ Hardware buffer size (no effect with JACK)
    inputStreamsEnabled     :: Maybe Int,       -- ^ Enabled input streams (CoreAudio only)
    outputStreamsEnabled    :: Maybe Int        -- ^ Enabled output streams (CoreAudio only)
} deriving (Eq, Show)

-- | Default realtime server options.
defaultRTOptions :: RTOptions
defaultRTOptions = RTOptions {
    -- Network control
    udpPortNumber           = 0,
    tcpPortNumber           = 0,
    useZeroconf             = False,
    maxNumberOfLogins       = 16,
    sessionPassword         = Nothing,
    -- Audio device control
    hardwareDeviceName      = Nothing,
    hardwareBufferSize      = 0,
    hardwareSampleRate      = 0,
    inputStreamsEnabled     = Nothing,
    outputStreamsEnabled    = Nothing
}

$(deriveAccessors ''RTOptions)

-- | Default realtime server options (UDP transport).
defaultRTOptionsUDP :: RTOptions
defaultRTOptionsUDP =  defaultRTOptions { udpPortNumber = 57110 }

-- | Default realtime server options (TCP transport).
defaultRTOptionsTCP :: RTOptions
defaultRTOptionsTCP = defaultRTOptions { tcpPortNumber = 57110 }

-- ====================================================================
-- * Non-Realtime options

-- | Non-realtime server options.
data NRTOptions = NRTOptions {
    commandFilePath    :: Maybe FilePath,  -- ^ Path to OSC command file ('Nothing' for stdin)
    inputFilePath      :: Maybe FilePath,  -- ^ Path to input sound file ('Nothing' for no audio input)
    outputFilePath     :: FilePath,        -- ^ Path to output sound file
    outputSampleRate   :: Int,             -- ^ Output sound file sample rate
    outputHeaderFormat :: String,          -- ^ Output sound file header format
    outputSampleFormat :: String           -- ^ Output sound file sample format
} deriving (Eq, Show)

-- | Default non-realtime server options.
defaultNRTOptions :: NRTOptions
defaultNRTOptions = NRTOptions {
    commandFilePath         = Nothing,
    inputFilePath           = Nothing,
    outputFilePath          = "output.wav",
    outputSampleRate        = 44100,
    outputHeaderFormat      = "wav",
    outputSampleFormat      = "int16"
}

$(deriveAccessors ''NRTOptions)