-- | Enumeration of SC3 server commands.
module Sound.Sc3.Server.Command.Enum where

import Data.List {- base -}
import Data.Maybe {- base -}

import qualified Sound.Osc.Packet as Osc {- hosc -}

-- | SC3 server commands are strings.
type SC3_Command = String

-- | Enumerate server command numbers.
sc3_cmd_enumeration :: [(SC3_Command, Int)]
sc3_cmd_enumeration =
  [ ("/notify", 1)
  , ("/status", 2)
  , ("/quit", 3)
  , ("/cmd", 4)
  , -- /d = synthdef
    ("/d_recv", 5)
  , ("/d_load", 6)
  , ("/d_loadDir", 7)
  , ("/d_freeAll", 8)
  , -- /s = synth
    ("/s_new", 9)
  , -- /n = node
    ("/n_trace", 10)
  , ("/n_free", 11)
  , ("/n_run", 12)
  , ("/n_cmd", 13)
  , ("/n_map", 14)
  , ("/n_set", 15)
  , ("/n_setn", 16)
  , ("/n_fill", 17)
  , ("/n_before", 18)
  , ("/n_after", 19)
  , -- /u = ugen
    ("/u_cmd", 20)
  , -- /g = group
    ("/g_new", 21)
  , ("/g_head", 22)
  , ("/g_tail", 23)
  , ("/g_freeAll", 24)
  , -- /c = control
    ("/c_set", 25)
  , ("/c_setn", 26)
  , ("/c_fill", 27)
  , -- /b = buffer
    ("/b_alloc", 28)
  , ("/b_allocRead", 29)
  , ("/b_read", 30)
  , ("/b_write", 31)
  , ("/b_free", 32)
  , ("/b_close", 33)
  , ("/b_zero", 34)
  , ("/b_set", 35)
  , ("/b_setn", 36)
  , ("/b_fill", 37)
  , ("/b_gen", 38)
  , --
    ("/dumpOSC", 39)
  , -- _get
    ("/c_get", 40)
  , ("/c_getn", 41)
  , ("/b_get", 42)
  , ("/b_getn", 43)
  , ("/s_get", 44)
  , ("/s_getn", 45)
  , -- _query
    ("/n_query", 46)
  , ("/b_query", 47)
  , --
    ("/n_mapn", 48)
  , ("/s_noid", 49)
  , --
    ("/g_deepFree", 50)
  , ("/clearSched", 51)
  , --
    ("/sync", 52)
  , --
    ("/d_free", 53)
  , -- _channel
    ("/b_allocReadChannel", 54)
  , ("/b_readChannel", 55)
  , -- _tree
    ("/g_dumpTree", 56)
  , ("/g_queryTree", 57)
  , -- error
    ("/error", 58)
  , -- _args
    ("/s_newargs", 59)
  , --
    ("/n_mapa", 60)
  , ("/n_mapan", 61)
  , ("/n_order", 62)
  ]

{- | Lookup command number in 'sc3_cmd_enumeration'.

>>> map sc3_cmd_number ["/b_alloc","/s_new"]
[Just 28,Just 9]
-}
sc3_cmd_number :: SC3_Command -> Maybe Int
sc3_cmd_number = flip lookup sc3_cmd_enumeration

-- | 'isJust' of 'sc3_cmd_number'.
known_sc3_cmd :: SC3_Command -> Bool
known_sc3_cmd = isJust . sc3_cmd_number

-- | List of asynchronous server commands, ie. commands that reply with @/done@.
async_cmds :: [SC3_Command]
async_cmds =
  [ "/b_alloc"
  , "/b_allocRead"
  , "/b_allocReadChannel"
  , "/b_close"
  , "/b_free"
  , "/b_read"
  , "/b_readChannel"
  , "/b_write"
  , "/b_zero"
  , "/d_load"
  , "/d_loadDir"
  , "/d_recv"
  , "/notify"
  , "/quit"
  , "/sync"
  ]

{- | 'True' if 'Message' is an asynchronous 'Message'.

> import Sound.Sc3.Server.Command.Plain
> map isAsync [b_close 0,n_set1 0 "0" 0,status] == [True,False,False]
-}
isAsync :: Osc.Message -> Bool
isAsync (Osc.Message a _) = a `elem` async_cmds

{- | Asynchronous commands are at the left.
This function should preserve the ordering of both branches.

> partition_async [b_close 0,n_set1 0 "0" 0]
-}
partition_async :: [Osc.Message] -> ([Osc.Message], [Osc.Message])
partition_async = partition isAsync

-- | Types & names for @b_info@ message fields.
b_info_fields :: [(String, String)]
b_info_fields =
  [ ("int", "buffer-id")
  , ("int", "frame-count")
  , ("int", "channels-count")
  , ("float", "sample-rate")
  ]

-- | Type, name and value descriptors for fields of @n_info@ message.
n_info_fields :: [(String, String, String)]
n_info_fields =
  [ ("int", "node-id", "")
  , ("int", "parent group-id", "-1 = nil")
  , ("int", "previous node-id", "-1 = nil")
  , ("int", "next node-id", "-1 = nil")
  , ("int", "node-type", "0 = synth,1 = group")
  , ("int", "head node-id", "-1 = nil")
  , ("int", "tail node-id", "-1 = nil")
  ]