src/Gargantext/Database/Root.hs

   1 {-|
   2 Module      : Gargantext.Database.Root
   3 Description : Main requests to get root of users
   4 Copyright   : (c) CNRS, 2017-Present
   5 License     : AGPL + CECILL v3
   6 Maintainer  : team@gargantext.org
   7 Stability   : experimental
   8 Portability : POSIX
   9 -}
  10
  11 {-# OPTIONS_GHC -fno-warn-name-shadowing #-}
  12 {-# OPTIONS_GHC -fno-warn-orphans        #-}
  13
  14 {-# LANGUAGE Arrows                 #-}
  15 {-# LANGUAGE DeriveGeneric          #-}
  16 {-# LANGUAGE ConstraintKinds        #-}
  17 {-# LANGUAGE FlexibleContexts       #-}
  18 {-# LANGUAGE FlexibleInstances      #-}
  19 {-# LANGUAGE FunctionalDependencies #-}
  20 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
  21 {-# LANGUAGE OverloadedStrings #-}
  22 {-# LANGUAGE MultiParamTypeClasses  #-}
  23 {-# LANGUAGE NoImplicitPrelude      #-}
  24 {-# LANGUAGE RankNTypes             #-}
  25 {-# LANGUAGE TemplateHaskell        #-}
  26
  27 module Gargantext.Database.Root where
  28
  29 import Opaleye (restrict, (.==), Query)
  30 import Opaleye.PGTypes (pgStrictText, pgInt4)
  31 import Control.Arrow (returnA)
  32 import Gargantext.Prelude
  33 import Gargantext.Database.Types.Node (Node, NodePoly(..), NodeType(NodeUser), HyperdataUser)
  34 import Gargantext.Database.Schema.Node (NodeRead)
  35 import Gargantext.Database.Schema.Node (queryNodeTable)
  36 import Gargantext.Database.Schema.User (queryUserTable, UserPoly(..))
  37 import Gargantext.Database.Config (nodeTypeId)
  38 import Gargantext.Core.Types.Individu (Username)
  39 import Gargantext.Database.Utils (Cmd, runOpaQuery)
  40
  41 getRoot :: Username -> Cmd err [Node HyperdataUser]
  42 getRoot = runOpaQuery . selectRoot
  43
  44 selectRoot :: Username -> Query NodeRead
  45 selectRoot username = proc () -> do
  46     row   <- queryNodeTable -< ()
  47     users <- queryUserTable -< ()
  48     restrict -< _node_typename row   .== (pgInt4 $ nodeTypeId NodeUser)
  49     restrict -< user_username  users .== (pgStrictText username)
  50     restrict -< _node_userId   row   .== (user_id users)
  51     returnA  -< row
  52
  53