-- http://sccode.org/1-4QN

import Control.Concurrent {- base -}
import Control.Monad {- base -}
import Sound.OSC {- hosc -}
import Sound.SC3 {- hsc3 -}
import qualified Sound.SC3.Lang.Pattern.Plain as P {- hsc3-lang -}
import qualified Sound.SC3.Lang.Random.IO as L

-- > withSC3 init_b
init_b :: Transport m => m Message
init_b = do
  _ <- async (b_alloc 0 512 1)
  async (b_gen_sine1 0 [Normalise,Wavetable,Clear] (map recip [1,2,3,4]))

-- > Sound.SC3.UGen.Dot.draw (mk_g (lfNoise0 'α'))
-- > audition (mk_g (lfNoise0 'α'))
mk_g :: (Rate -> UGen -> UGen) -> Synthdef
mk_g o =
    let k = control KR
        b = k "bufnum" 0
        d = k "dur" 1
        r = k "rate" 1
        p = k "pos" 0
        sd = k "sdens" 1
        ed = k "edens" 1
        l = line KR sd ed d DoNothing
        t = o AR l
        e_p = envPerc (rand 'β' 0.0001 0.1) (d * rand 'γ' 0.5 4)
        e = envGen KR 1 1 0 1 RemoveSynth e_p
        g = grainBuf 2 t (1 / l) b r p 2 0 (-1) 512
    in synthdef "g" (out 0 (g * e))

pb :: [P.Param]
pb =
    [[("dur",repeat 4)
     ,("sdens",cycle [9000,1000,500] ./ 100)
     ,("edens",concat (P.rand 'α' [[9000,1000,500] ./ 10
                                  ,[1,1,1]]))
     ,("rate",P.white 'β' (-10) 10)
     ,("pos",P.white 'γ' (-10) 10)]
    ,[("dur",repeat (4/3))
     ,("sdens",cycle [9000,1000,500,25])
     ,("edens",concat (P.rand 'δ' [[9000,1000,500,25]
                                  ,[1,1,1,1]]))
     ,("rate",P.white 'ε' (-100) 100)
     ,("pos",P.white 'ζ' (-10) 10)]]

push_g :: Transport m => m Message
push_g = do
  let ph u r f = u r f 0
      wd u r f = u r f 0 0
      o_set = [lfNoise0 'α',ph sinOsc,ph impulse,wd lfPulse,ph lfSaw]
  o <- L.choose o_set
  async (d_recv (mk_g o))

update_g :: Transport m => m ()
update_g = do
  _ <- push_g
  dt <- L.choose [1,2,4,8,16,32]
  wait dt

-- 1. there is a 'pattern' that plays the 'g'
-- 2. there is a process that sends new 'g' definitions to scsynth
main :: IO ()
main = do
  _ <- forkIO (withSC3 (reset >> init_b >> forever update_g))
  let g = mk_g (lfNoise0 'α')
      sc = P.sbind (zip (repeat g) pb)
  audition sc