-- |
-- Module     : Simulation.Aivika.Activity.Random
-- Copyright  : Copyright (c) 2009-2017, David Sorokin <david.sorokin@gmail.com>
-- License    : BSD3
-- Maintainer : David Sorokin <david.sorokin@gmail.com>
-- Stability  : experimental
-- Tested with: GHC 8.0.1
--
-- This module defines some useful predefined activities that
-- hold the current process for the corresponding random time
-- interval, when processing every input element.
--

module Simulation.Aivika.Activity.Random
       (newRandomUniformActivity,
        newRandomUniformIntActivity,
        newRandomTriangularActivity,
        newRandomNormalActivity,
        newRandomLogNormalActivity,
        newRandomExponentialActivity,
        newRandomErlangActivity,
        newRandomPoissonActivity,
        newRandomBinomialActivity,
        newRandomGammaActivity,
        newRandomBetaActivity,
        newRandomWeibullActivity,
        newRandomDiscreteActivity,
        newPreemptibleRandomUniformActivity,
        newPreemptibleRandomUniformIntActivity,
        newPreemptibleRandomTriangularActivity,
        newPreemptibleRandomNormalActivity,
        newPreemptibleRandomLogNormalActivity,
        newPreemptibleRandomExponentialActivity,
        newPreemptibleRandomErlangActivity,
        newPreemptibleRandomPoissonActivity,
        newPreemptibleRandomBinomialActivity,
        newPreemptibleRandomGammaActivity,
        newPreemptibleRandomBetaActivity,
        newPreemptibleRandomWeibullActivity,
        newPreemptibleRandomDiscreteActivity) where

import Simulation.Aivika.Generator
import Simulation.Aivika.Simulation
import Simulation.Aivika.Process
import Simulation.Aivika.Process.Random
import Simulation.Aivika.Activity

-- | Create a new activity that holds the process for a random time interval
-- distributed uniformly, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomUniformActivity :: Double
                            -- ^ the minimum time interval
                            -> Double
                            -- ^ the maximum time interval
                            -> Simulation (Activity () a a)
newRandomUniformActivity =
  newPreemptibleRandomUniformActivity False

-- | Create a new activity that holds the process for a random time interval
-- distributed uniformly, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomUniformIntActivity :: Int
                               -- ^ the minimum time interval
                               -> Int
                               -- ^ the maximum time interval
                               -> Simulation (Activity () a a)
newRandomUniformIntActivity =
  newPreemptibleRandomUniformIntActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the triangular distribution, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomTriangularActivity :: Double
                               -- ^ the minimum time interval
                               -> Double
                               -- ^ the median of the time interval
                               -> Double
                               -- ^ the maximum time interval
                               -> Simulation (Activity () a a)
newRandomTriangularActivity =
  newPreemptibleRandomTriangularActivity False

-- | Create a new activity that holds the process for a random time interval
-- distributed normally, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomNormalActivity :: Double
                           -- ^ the mean time interval
                           -> Double
                           -- ^ the time interval deviation
                           -> Simulation (Activity () a a)
newRandomNormalActivity =
  newPreemptibleRandomNormalActivity False
         
-- | Create a new activity that holds the process for a random time interval
-- having the lognormal distribution, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomLogNormalActivity :: Double
                              -- ^ the mean of a normal distribution which
                              -- this distribution is derived from
                              -> Double
                              -- ^ the deviation of a normal distribution which
                              -- this distribution is derived from
                              -> Simulation (Activity () a a)
newRandomLogNormalActivity =
  newPreemptibleRandomLogNormalActivity False

-- | Create a new activity that holds the process for a random time interval
-- distributed exponentially with the specified mean (the reciprocal of the rate),
-- when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomExponentialActivity :: Double
                                -- ^ the mean time interval (the reciprocal of the rate)
                                -> Simulation (Activity () a a)
newRandomExponentialActivity =
  newPreemptibleRandomExponentialActivity False
         
-- | Create a new activity that holds the process for a random time interval
-- having the Erlang distribution with the specified scale (the reciprocal of the rate)
-- and shape parameters, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomErlangActivity :: Double
                           -- ^ the scale (the reciprocal of the rate)
                           -> Int
                           -- ^ the shape
                           -> Simulation (Activity () a a)
newRandomErlangActivity =
  newPreemptibleRandomErlangActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the Poisson distribution with the specified mean, when processing
-- every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomPoissonActivity :: Double
                            -- ^ the mean time interval
                            -> Simulation (Activity () a a)
newRandomPoissonActivity =
  newPreemptibleRandomPoissonActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the binomial distribution with the specified probability and trials,
-- when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomBinomialActivity :: Double
                             -- ^ the probability
                             -> Int
                             -- ^ the number of trials
                             -> Simulation (Activity () a a)
newRandomBinomialActivity =
  newPreemptibleRandomBinomialActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the Gamma distribution with the specified shape and scale,
-- when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomGammaActivity :: Double
                          -- ^ the shape
                          -> Double
                          -- ^ the scale (a reciprocal of the rate)
                          -> Simulation (Activity () a a)
newRandomGammaActivity =
  newPreemptibleRandomGammaActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the Beta distribution with the specified shape parameters (alpha and beta),
-- when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomBetaActivity :: Double
                         -- ^ shape (alpha)
                         -> Double
                         -- ^ shape (beta)
                         -> Simulation (Activity () a a)
newRandomBetaActivity =
  newPreemptibleRandomBetaActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the Weibull distribution with the specified shape and scale,
-- when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomWeibullActivity :: Double
                            -- ^ shape
                            -> Double
                            -- ^ scale
                            -> Simulation (Activity () a a)
newRandomWeibullActivity =
  newPreemptibleRandomWeibullActivity False

-- | Create a new activity that holds the process for a random time interval
-- having the specified discrete distribution, when processing every input element.
--
-- By default, it is assumed that the activity process cannot be preempted,
-- because the handling of possible task preemption is rather costly
-- operation.
newRandomDiscreteActivity :: DiscretePDF Double
                             -- ^ the discrete probability density function
                             -> Simulation (Activity () a a)
newRandomDiscreteActivity =
  newPreemptibleRandomDiscreteActivity False

-- | Create a new activity that holds the process for a random time interval
-- distributed uniformly, when processing every input element.
newPreemptibleRandomUniformActivity :: Bool
                                       -- ^ whether the activity process can be preempted
                                       -> Double
                                       -- ^ the minimum time interval
                                       -> Double
                                       -- ^ the maximum time interval
                                       -> Simulation (Activity () a a)
newPreemptibleRandomUniformActivity preemptible min max =
  newPreemptibleActivity preemptible $ \a ->
  do randomUniformProcess_ min max
     return a

-- | Create a new activity that holds the process for a random time interval
-- distributed uniformly, when processing every input element.
newPreemptibleRandomUniformIntActivity :: Bool
                                          -- ^ whether the activity process can be preempted
                                          -> Int
                                          -- ^ the minimum time interval
                                          -> Int
                                          -- ^ the maximum time interval
                                          -> Simulation (Activity () a a)
newPreemptibleRandomUniformIntActivity preemptible min max =
  newPreemptibleActivity preemptible $ \a ->
  do randomUniformIntProcess_ min max
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the triangular distribution, when processing every input element.
newPreemptibleRandomTriangularActivity :: Bool
                                          -- ^ whether the activity process can be preempted
                                          -> Double
                                          -- ^ the minimum time interval
                                          -> Double
                                          -- ^ the median of the time interval
                                          -> Double
                                          -- ^ the maximum time interval
                                          -> Simulation (Activity () a a)
newPreemptibleRandomTriangularActivity preemptible min median max =
  newPreemptibleActivity preemptible $ \a ->
  do randomTriangularProcess_ min median max
     return a

-- | Create a new activity that holds the process for a random time interval
-- distributed normally, when processing every input element.
newPreemptibleRandomNormalActivity :: Bool
                                      -- ^ whether the activity process can be preempted
                                      -> Double
                                      -- ^ the mean time interval
                                      -> Double
                                      -- ^ the time interval deviation
                                      -> Simulation (Activity () a a)
newPreemptibleRandomNormalActivity preemptible mu nu =
  newPreemptibleActivity preemptible $ \a ->
  do randomNormalProcess_ mu nu
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the lognormal distribution, when processing every input element.
newPreemptibleRandomLogNormalActivity :: Bool
                                         -- ^ whether the activity process can be preempted
                                         -> Double
                                         -- ^ the mean of a normal distribution which
                                         -- this distribution is derived from
                                         -> Double
                                         -- ^ the deviation of a normal distribution which
                                         -- this distribution is derived from
                                         -> Simulation (Activity () a a)
newPreemptibleRandomLogNormalActivity preemptible mu nu =
  newPreemptibleActivity preemptible $ \a ->
  do randomLogNormalProcess_ mu nu
     return a

-- | Create a new activity that holds the process for a random time interval
-- distributed exponentially with the specified mean (the reciprocal of the rate),
-- when processing every input element.
newPreemptibleRandomExponentialActivity :: Bool
                                           -- ^ whether the activity process can be preempted
                                           -> Double
                                           -- ^ the mean time interval (the reciprocal of the rate)
                                           -> Simulation (Activity () a a)
newPreemptibleRandomExponentialActivity preemptible mu =
  newPreemptibleActivity preemptible $ \a ->
  do randomExponentialProcess_ mu
     return a
         
-- | Create a new activity that holds the process for a random time interval
-- having the Erlang distribution with the specified scale (the reciprocal of the rate)
-- and shape parameters, when processing every input element.
newPreemptibleRandomErlangActivity :: Bool
                                      -- ^ whether the activity process can be preempted
                                      -> Double
                                      -- ^ the scale (the reciprocal of the rate)
                                      -> Int
                                      -- ^ the shape
                                      -> Simulation (Activity () a a)
newPreemptibleRandomErlangActivity preemptible beta m =
  newPreemptibleActivity preemptible $ \a ->
  do randomErlangProcess_ beta m
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the Poisson distribution with the specified mean, when processing
-- every input element.
newPreemptibleRandomPoissonActivity :: Bool
                                       -- ^ whether the activity process can be preempted
                                       -> Double
                                       -- ^ the mean time interval
                                       -> Simulation (Activity () a a)
newPreemptibleRandomPoissonActivity preemptible mu =
  newPreemptibleActivity preemptible $ \a ->
  do randomPoissonProcess_ mu
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the binomial distribution with the specified probability and trials,
-- when processing every input element.
newPreemptibleRandomBinomialActivity :: Bool
                                        -- ^ whether the activity process can be preempted
                                        -> Double
                                        -- ^ the probability
                                        -> Int
                                        -- ^ the number of trials
                                        -> Simulation (Activity () a a)
newPreemptibleRandomBinomialActivity preemptible prob trials =
  newPreemptibleActivity preemptible $ \a ->
  do randomBinomialProcess_ prob trials
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the Gamma distribution with the specified shape and scale,
-- when processing every input element.
newPreemptibleRandomGammaActivity :: Bool
                                     -- ^ whether the activity process can be preempted
                                     -> Double
                                     -- ^ the shape
                                     -> Double
                                     -- ^ the scale
                                     -> Simulation (Activity () a a)
newPreemptibleRandomGammaActivity preemptible kappa theta =
  newPreemptibleActivity preemptible $ \a ->
  do randomGammaProcess_ kappa theta
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the Beta distribution with the specified shape parameters (alpha and beta),
-- when processing every input element.
newPreemptibleRandomBetaActivity :: Bool
                                    -- ^ whether the activity process can be preempted
                                    -> Double
                                    -- ^ shape (alpha)
                                    -> Double
                                    -- ^ shape (beta)
                                    -> Simulation (Activity () a a)
newPreemptibleRandomBetaActivity preemptible alpha beta =
  newPreemptibleActivity preemptible $ \a ->
  do randomBetaProcess_ alpha beta
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the Weibull distribution with the specified shape and scale,
-- when processing every input element.
newPreemptibleRandomWeibullActivity :: Bool
                                       -- ^ whether the activity process can be preempted
                                       -> Double
                                       -- ^ shape
                                       -> Double
                                       -- ^ scale
                                       -> Simulation (Activity () a a)
newPreemptibleRandomWeibullActivity preemptible alpha beta =
  newPreemptibleActivity preemptible $ \a ->
  do randomWeibullProcess_ alpha beta
     return a

-- | Create a new activity that holds the process for a random time interval
-- having the specified discrete distribution, when processing every input element.
newPreemptibleRandomDiscreteActivity :: Bool
                                        -- ^ whether the activity process can be preempted
                                        -> DiscretePDF Double
                                        -- ^ the discrete probability density function
                                        -> Simulation (Activity () a a)
newPreemptibleRandomDiscreteActivity preemptible dpdf =
  newPreemptibleActivity preemptible $ \a ->
  do randomDiscreteProcess_ dpdf
     return a