{-|
Module      : Gargantext.Database.Action.Node
Description :
Copyright   : (c) CNRS, 2017-Present
License     : AGPL + CECILL v3
Maintainer  : team@gargantext.org
Stability   : experimental
Portability : POSIX
-}

{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
{-# OPTIONS_GHC -fno-warn-orphans        #-}

{-# LANGUAGE Arrows                 #-}
{-# LANGUAGE ConstraintKinds        #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE TemplateHaskell        #-}
{-# LANGUAGE TypeFamilies           #-}

module Gargantext.Database.Action.Node
  where

import Gargantext.Core.Types (Name)
import Gargantext.Database.Admin.Types.Hyperdata
import Gargantext.Database.Admin.Types.Node
import Gargantext.Database.Prelude (Cmd)
import Gargantext.Database.Query.Table.Node
import Gargantext.Database.Query.Table.Node.Error
import Gargantext.Database.Query.Table.Node.UpdateOpaleye (updateHyperdata)
import Gargantext.Prelude
import Gargantext.Core.Crypto.Hash (hash)
import Gargantext.Database.Prelude
import Control.Lens (view)
import Gargantext.Prelude.Config (GargConfig(..))

------------------------------------------------------------------------
-- | TODO mk all others nodes
mkNodeWithParent :: (HasNodeError err)
                 => NodeType
                 -> Maybe ParentId
                 -> UserId
                 -> Name
                 -> Cmd err [NodeId]
mkNodeWithParent NodeUser (Just _) _   _    = nodeError UserNoParent

------------------------------------------------------------------------
-- | MkNode, insert and eventually configure Hyperdata
mkNodeWithParent NodeUser Nothing uId name =
  insertNodesWithParentR Nothing [node NodeUser name defaultHyperdataUser Nothing uId]

mkNodeWithParent _ Nothing _ _ = nodeError HasParent
------------------------------------------------------------------------
mkNodeWithParent NodeFrameWrite i u n =
  mkNodeWithParent_ConfigureHyperdata NodeFrameWrite i u n

mkNodeWithParent NodeFrameCalc i u n =
  mkNodeWithParent_ConfigureHyperdata NodeFrameCalc i u n

mkNodeWithParent nt (Just pId) uId name  = insertNode nt (Just name) Nothing pId uId
-- mkNodeWithParent _ _ _ _ = errorWith "[G.D.A.Node.mkNodeWithParent] nees parent"


-- | Sugar to create a node, get its NodeId and update its Hyperdata after
mkNodeWithParent_ConfigureHyperdata :: (HasNodeError err)
                                    => NodeType
                                    -> Maybe ParentId
                                    -> UserId
                                    -> Name
                                    -> Cmd err [NodeId]
mkNodeWithParent_ConfigureHyperdata NodeFrameWrite (Just i) uId name =
  mkNodeWithParent_ConfigureHyperdata' NodeFrameWrite (Just i) uId name

mkNodeWithParent_ConfigureHyperdata NodeFrameCalc (Just i) uId name =
  mkNodeWithParent_ConfigureHyperdata' NodeFrameCalc (Just i) uId name

mkNodeWithParent_ConfigureHyperdata    _ _ _ _ = nodeError NotImplYet


-- | Function not exposed
mkNodeWithParent_ConfigureHyperdata' :: (HasNodeError err)
                                    => NodeType
                                    -> Maybe ParentId
                                    -> UserId
                                    -> Name
                                    -> Cmd err [NodeId]
mkNodeWithParent_ConfigureHyperdata' nt (Just i) uId name = do
  maybeNodeId <- case nt of
     NodeFrameWrite -> insertNode NodeFrameWrite (Just name) Nothing i uId
     NodeFrameCalc  -> insertNode NodeFrameCalc  (Just name) Nothing i uId
     _              -> nodeError NeedsConfiguration

  case maybeNodeId of
    []  -> nodeError (DoesNotExist i)
    [n] -> do
      config <- view hasConfig
      u <- case nt of
            NodeFrameWrite -> pure $ _gc_frame_write_url config
            NodeFrameCalc  -> pure $ _gc_frame_calc_url  config
            _              -> nodeError NeedsConfiguration
      let
        s = _gc_secretkey config
        hd = HyperdataFrame u (hash $ s <> (cs $ show n))
      _ <- updateHyperdata n hd
      pure [n]
    (_:_:_)  -> nodeError MkNode
mkNodeWithParent_ConfigureHyperdata' _ _ _ _ = nodeError HasParent