{-|
Module      : Gargantext.Database.Types.Nodes
Description : Main Types of Nodes in Database
Copyright   : (c) CNRS, 2017-Present
License     : AGPL + CECILL v3
Maintainer  : team@gargantext.org
Stability   : experimental
Portability : POSIX

-}

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

{-# LANGUAGE BangPatterns        #-}
{-# LANGUAGE DeriveAnyClass      #-}
{-# LANGUAGE DerivingStrategies  #-}
{-# LANGUAGE DerivingVia         #-}
{-# LANGUAGE LambdaCase          #-}
{-# LANGUAGE TemplateHaskell     #-}
{-# LANGUAGE TypeFamilies        #-}

-- {-# LANGUAGE DuplicateRecordFields #-}

module Gargantext.Database.Admin.Types.Node
  where

import Codec.Serialise (Serialise())
import Data.Aeson as JSON
import Data.Aeson.Types
import Data.Csv qualified as Csv
import Data.Morpheus.Kind (SCALAR)
import Data.Morpheus.Types ( DecodeScalar(..), EncodeScalar(..), GQLType(KIND) )
import Data.Swagger
import Data.Text (pack, unpack)
import Data.Time (UTCTime)
import Data.TreeDiff
import Database.PostgreSQL.Simple.FromField (FromField, fromField, fromJSONField)
import Database.PostgreSQL.Simple.ToField (ToField, toField, toJSONField)
import Database.PostgreSQL.Simple.ToRow (ToRow, toRow)
import Fmt ( Buildable(..) )
import Gargantext.Core.Utils.Prefix (unPrefix, unPrefixSwagger, wellNamedSchema)
import Gargantext.Database.Schema.Context
import Gargantext.Database.Schema.Node ( NodePoly(Node), NodePolySearch(NodeSearch) )
import Gargantext.Prelude
import Gargantext.Prelude.Crypto.Hash (Hash)
import Opaleye (DefaultFromField, defaultFromField, SqlInt4, SqlText, Nullable, fromPGSFromField)
import Opaleye.TextSearch (SqlTSVector)
import Opaleye qualified as O
import Prelude qualified
import Servant hiding (Context)
import Test.QuickCheck (elements, Positive (getPositive))
import Test.QuickCheck.Arbitrary ( Arbitrary(arbitrary), arbitraryBoundedEnum)
import Test.QuickCheck.Instances.Text ()
import Test.QuickCheck.Instances.Time ()
import Text.Read (read)

-- | A class generalising over resource identifiers in gargantext
class ResourceId a where
  isPositive :: a -> Bool

-- | A unique identifier for users within gargantext. Note that the 'UserId' for users is
-- typically /different/ from their 'NodeId', as the latter tracks the resources being created,
-- whereas this one tracks only users.
newtype UserId = UnsafeMkUserId { _UserId :: Int }
  deriving stock (Show, Eq, Ord, Generic)
  deriving newtype (ToSchema, ToJSON, FromJSON, FromField, ToField)

-- The 'UserId' is isomprohic to an 'Int'.
instance GQLType UserId where
  type KIND UserId = SCALAR

instance EncodeScalar UserId where
  encodeScalar = encodeScalar . _UserId

instance DecodeScalar UserId where
  decodeScalar = fmap UnsafeMkUserId . decodeScalar

instance ResourceId UserId where
  isPositive = (> 0) . _UserId

instance Arbitrary UserId where
  arbitrary = UnsafeMkUserId . getPositive <$> arbitrary

instance DefaultFromField SqlInt4 UserId
  where
    defaultFromField = fromPGSFromField

type MasterUserId = UserId

type NodeTypeId   = Int
type NodeName     = Text
type ContextName  = Text

type TSVector     = Text
type ContextTitle  = Text


------------------------------------------------------------------------
-- | NodePoly indicates that Node has a Polymorphism Type
type Node    json = NodePoly    NodeId (Maybe Hash) NodeTypeId UserId (Maybe ParentId) NodeName UTCTime json
type Context json = ContextPoly NodeId (Maybe Hash) NodeTypeId UserId (Maybe ParentId) ContextTitle UTCTime json

-- | NodeSearch (queries)
-- type NodeSearch json   = NodePolySearch NodeId NodeTypeId UserId (Maybe ParentId) NodeName UTCTime json (Maybe TSVector)

------------------------------------------------------------------------

instance (Typeable hyperdata, ToSchema hyperdata) =>
         ToSchema (NodePoly NodeId Hash NodeTypeId
                            (Maybe UserId)
                            ParentId NodeName
                            UTCTime hyperdata
                  ) where
  declareNamedSchema = wellNamedSchema "_node_"

instance (Typeable hyperdata, ToSchema hyperdata) =>
         ToSchema (NodePoly NodeId Hash NodeTypeId
                            UserId
                            (Maybe ParentId) NodeName
                            UTCTime hyperdata
                  ) where
  declareNamedSchema = wellNamedSchema "_node_"

instance (Typeable hyperdata, ToSchema hyperdata) =>
         ToSchema (NodePoly NodeId (Maybe Hash) NodeTypeId
                            UserId
                            (Maybe ParentId) NodeName
                            UTCTime hyperdata
                  ) where
  declareNamedSchema = wellNamedSchema "_node_"

instance (Typeable hyperdata, ToSchema hyperdata) =>
         ToSchema (NodePolySearch NodeId
                                  NodeTypeId
                                  (Maybe UserId)
                                  ParentId
                                  NodeName
                                  UTCTime
                                  hyperdata
                                  (Maybe TSVector)
                  ) where
  declareNamedSchema = wellNamedSchema "_ns_"

instance (Typeable hyperdata, ToSchema hyperdata) =>
         ToSchema (NodePolySearch NodeId
                                  NodeTypeId
                                  UserId
                                  (Maybe ParentId)
                                  NodeName
                                  UTCTime
                                  hyperdata
                                  (Maybe TSVector)
                  ) where
  declareNamedSchema = wellNamedSchema "_ns_"

instance (Arbitrary nodeId
         ,Arbitrary hashId
         ,Arbitrary toDBid
         ,Arbitrary userId
         ,Arbitrary nodeParentId
         , Arbitrary hyperdata
         ) => Arbitrary (NodePoly nodeId hashId toDBid userId nodeParentId
                                  NodeName UTCTime hyperdata) where
    --arbitrary = Node 1 1 (Just 1) 1 "name" (jour 2018 01 01) (arbitrary) (Just "")
    arbitrary = Node <$> arbitrary <*> arbitrary <*> arbitrary
                     <*> arbitrary <*> arbitrary <*> arbitrary
                     <*> arbitrary <*> arbitrary



instance (Arbitrary hyperdata
         ,Arbitrary nodeId
         ,Arbitrary toDBid
         ,Arbitrary userId
         ,Arbitrary nodeParentId
         ) => Arbitrary (NodePolySearch nodeId
                                        toDBid
                                        userId
                                        nodeParentId
                                        NodeName
                                        UTCTime
                                        hyperdata
                                        (Maybe TSVector)
                        ) where
    --arbitrary = Node 1 1 (Just 1) 1 "name" (jour 2018 01 01) (arbitrary) (Just "")
    arbitrary = NodeSearch <$> arbitrary
                           <*> arbitrary
                           <*> arbitrary
                           <*> arbitrary
                           <*> arbitrary
                           <*> arbitrary
                           <*> arbitrary
                           <*> arbitrary


instance (Arbitrary contextId
         ,Arbitrary hashId
         ,Arbitrary toDBid
         ,Arbitrary userId
         ,Arbitrary contextParentId
         , Arbitrary hyperdata
         ) => Arbitrary (ContextPoly contextId hashId toDBid userId contextParentId
                                  ContextName UTCTime hyperdata) where
    --arbitrary = Node 1 1 (Just 1) 1 "name" (jour 2018 01 01) (arbitrary) (Just "")
    arbitrary = Context <$> arbitrary <*> arbitrary <*> arbitrary
                        <*> arbitrary <*> arbitrary <*> arbitrary
                        <*> arbitrary <*> arbitrary

instance (Arbitrary hyperdata
         ,Arbitrary contextId
         ,Arbitrary toDBid
         ,Arbitrary userId
         ,Arbitrary contextParentId
         ) => Arbitrary (ContextPolySearch contextId
                                        toDBid
                                        userId
                                        contextParentId
                                        ContextName
                                        UTCTime
                                        hyperdata
                                        (Maybe TSVector)
                        ) where
    --arbitrary = Node 1 1 (Just 1) 1 "name" (jour 2018 01 01) (arbitrary) (Just "")
    arbitrary = ContextSearch <$> arbitrary
                              <*> arbitrary
                              <*> arbitrary
                              <*> arbitrary
                              <*> arbitrary
                              <*> arbitrary
                              <*> arbitrary
                              <*> arbitrary




------------------------------------------------------------------------
pgNodeId :: NodeId -> O.Column O.SqlInt4
pgNodeId = pgResourceId _NodeId

pgResourceId :: (a -> Int) -> a -> O.Column O.SqlInt4
pgResourceId id2int = O.sqlInt4 . id2int

pgContextId :: ContextId -> O.Column O.SqlInt4
pgContextId = pgResourceId _ContextId

------------------------------------------------------------------------
-- | A unique identifier for a /node/ in the gargantext tree. Every time
-- we create something in Gargantext (a user, a corpus, etc) we add a node
-- to a tree, and each node has its unique identifier. Note how nodes might
-- have also /other/ identifiers, to better qualify them.
newtype NodeId = UnsafeMkNodeId { _NodeId :: Int }
  deriving stock (Read, Generic, Eq, Ord)
  deriving newtype (Num, Enum, ToJSONKey, FromJSONKey, ToJSON, FromJSON, Hashable, Csv.ToField)
  deriving anyclass (ToExpr)

instance ResourceId NodeId where
  isPositive = (> 0) . _NodeId

instance Buildable NodeId where
  build (UnsafeMkNodeId nid) = build nid

instance GQLType NodeId
instance Prelude.Show NodeId where
  show (UnsafeMkNodeId n) = "nodeId-" <> show n
instance Serialise NodeId
instance ToField NodeId where
  toField (UnsafeMkNodeId n) = toField n
instance ToRow NodeId where
  toRow (UnsafeMkNodeId i) = [toField i]

instance FromField NodeId where
  fromField field mdata = do
    n <- UnsafeMkNodeId <$> fromField field mdata
    if isPositive n
       then pure n
       else mzero
instance ToSchema NodeId

-- | An identifier for a 'Context' in gargantext.
newtype ContextId = UnsafeMkContextId { _ContextId :: Int }
  deriving stock   (Show, Eq, Ord, Generic)
  deriving newtype (Csv.ToField, ToJSONKey, FromJSONKey, ToJSON, FromJSON, ToField, ToSchema)
  deriving anyclass ToExpr
  deriving FromField via NodeId

instance ToParamSchema ContextId

instance Arbitrary ContextId where
  arbitrary = UnsafeMkContextId . getPositive <$> arbitrary

instance FromHttpApiData ContextId where
  parseUrlPiece n = pure $ UnsafeMkContextId $ (read . cs) n
instance ToHttpApiData ContextId where
  toUrlPiece (UnsafeMkContextId n) = toUrlPiece n

newtype NodeContextId = UnsafeMkNodeContextId { _NodeContextId :: Int }
  deriving stock (Read, Generic, Eq, Ord)
  deriving newtype (Num, Enum, ToJSONKey, FromJSONKey, ToJSON, FromJSON, Hashable, Csv.ToField)
  deriving anyclass (ToExpr)


--instance Csv.ToField NodeId where
--  toField (NodeId nodeId) = Csv.toField nodeId

unNodeId :: NodeId -> Int
unNodeId = _NodeId

-- | Converts a 'NodeId' into a 'ContextId'.
-- FIXME(adn) We should audit the usage of this function,
-- to make sure that a ContextId and a NodeId are /really/
-- conceptually the same thing.
nodeId2ContextId :: NodeId -> ContextId
nodeId2ContextId = UnsafeMkContextId . _NodeId

contextId2NodeId :: ContextId -> NodeId
contextId2NodeId = UnsafeMkNodeId . _ContextId

------------------------------------------------------------------------
------------------------------------------------------------------------
instance FromHttpApiData NodeId where
  parseUrlPiece n = pure $ UnsafeMkNodeId $ (read . cs) n
instance ToHttpApiData NodeId where
  toUrlPiece (UnsafeMkNodeId n) = toUrlPiece n
instance ToParamSchema NodeId

-- | It makes sense to generate only positive ids.
instance Arbitrary NodeId where
  arbitrary = UnsafeMkNodeId . getPositive <$> arbitrary

type ParentId    = NodeId
type CorpusId    = NodeId
type CommunityId = NodeId
type ListId      = NodeId
type DocumentId  = NodeId
type DocId       = NodeId
type RootId      = NodeId
type MasterCorpusId = CorpusId
type UserCorpusId   = CorpusId

type GraphId  = NodeId
type PhyloId  = NodeId
type AnnuaireId = NodeId
type ContactId  = NodeId

------------------------------------------------------------------------
data Status  = Status { status_failed    :: !Int
                      , status_succeeded :: !Int
                      , status_remaining :: !Int
                      } deriving (Show, Generic)
$(deriveJSON (unPrefix "status_") ''Status)

instance Arbitrary Status where
  arbitrary = Status <$> arbitrary <*> arbitrary <*> arbitrary


------------------------------------------------------------------------
data LanguageNodes = LanguageNodes { languageNodes___unknown__ :: [Int]}
    deriving (Show, Generic)
$(deriveJSON (unPrefix "languageNodes_") ''LanguageNodes)

------------------------------------------------------------------------
-- level: debug | dev  (fatal = critical)
data EventLevel = CRITICAL | FATAL | ERROR | WARNING | INFO | DEBUG
  deriving (Show, Generic, Enum, Bounded)

instance FromJSON EventLevel
instance ToJSON EventLevel

instance Arbitrary EventLevel where
  arbitrary = elements [minBound..maxBound]

instance ToSchema EventLevel where
  declareNamedSchema proxy = genericDeclareNamedSchema defaultSchemaOptions proxy

------------------------------------------------------------------------
data Event = Event { event_level   :: !EventLevel
                   , event_message :: !Text
                   , event_date    :: !UTCTime
            } deriving (Show, Generic)
$(deriveJSON (unPrefix "event_") ''Event)

instance Arbitrary Event where
  arbitrary = Event <$> arbitrary <*> arbitrary <*> arbitrary

instance ToSchema Event where
  declareNamedSchema = genericDeclareNamedSchema (unPrefixSwagger "event_")

------------------------------------------------------------------------
data Resource = Resource { resource_path    :: !(Maybe Text)
                         , resource_scraper :: !(Maybe Text)
                         , resource_query   :: !(Maybe Text)
                         , resource_events  :: !([Event])
                         , resource_status  :: !Status
                         , resource_date    :: !UTCTime
                         } deriving (Show, Generic)
$(deriveJSON (unPrefix "resource_") ''Resource)

instance Arbitrary Resource where
    arbitrary = Resource <$> arbitrary
                         <*> arbitrary
                         <*> arbitrary
                         <*> arbitrary
                         <*> arbitrary
                         <*> arbitrary

instance ToSchema Resource where
  declareNamedSchema = genericDeclareNamedSchema (unPrefixSwagger "resource_")

------------------------------------------------------------------------
-- | Then a Node can be either a Folder or a Corpus or a Document
data NodeType
  = NodeUser
  | NodeFolderPrivate
  | NodeFolderShared
  | NodeTeam
  | NodeFolderPublic
  | NodeFolder
  | NodeCorpus
  | NodeCorpusV3
  | NodeTexts
  | NodeDocument
  | NodeAnnuaire
  | NodeContact
  | NodeGraph
  | NodePhylo
  | NodeDashboard
  | NodeList
  | NodeModel
  | NodeListCooc
  -- Optional Nodes
  | Notes
  | Calc
  | NodeFrameVisio
  | NodeFrameNotebook
  | NodeFile
  deriving (Show, Read, Eq, Ord, Generic, Bounded, Enum)

instance GQLType NodeType

-- /NOTE/ (adn) For backward-compatibility reasons, we keep the format for ToJSON/FromJSON similar
-- to what 'Show/Read' would generate, but we otherwise generate \"by hand\" the mapping between a
-- NodeType and its JSON representation, because this way we reduce the odds of /breaking the frontend/
-- in case we change the Show/Read instances in the future.
instance ToJSON NodeType where
  toJSON = JSON.String . \case
    NodeUser
      -> "NodeUser"
    NodeFolderPrivate
      -> "NodeFolderPrivate"
    NodeFolderShared
      -> "NodeFolderShared"
    NodeTeam
      -> "NodeTeam"
    NodeFolderPublic
      -> "NodeFolderPublic"
    NodeFolder
      -> "NodeFolder"
    NodeCorpus
      -> "NodeCorpus"
    NodeCorpusV3
      -> "NodeCorpusV3"
    NodeTexts
      -> "NodeTexts"
    NodeDocument
      -> "NodeDocument"
    NodeAnnuaire
      -> "NodeAnnuaire"
    NodeContact
      -> "NodeContact"
    NodeGraph
      -> "NodeGraph"
    NodePhylo
      -> "NodePhylo"
    NodeDashboard
      -> "NodeDashboard"
    NodeList
      -> "NodeList"
    NodeModel
      -> "NodeModel"
    NodeListCooc
      -> "NodeListCooc"
    Notes
      -> "Notes"
    Calc
      -> "Calc"
    NodeFrameVisio
      -> "NodeFrameVisio"
    NodeFrameNotebook
      -> "NodeFrameNotebook"
    NodeFile
      -> "NodeFile"

instance FromJSON NodeType where
  parseJSON = withText "NodeType" $ \t -> case t of
    "NodeUser"
      -> pure NodeUser
    "NodeFolderPrivate"
      -> pure NodeFolderPrivate
    "NodeFolderShared"
      -> pure NodeFolderShared
    "NodeTeam"
      -> pure NodeTeam
    "NodeFolderPublic"
      -> pure NodeFolderPublic
    "NodeFolder"
      -> pure NodeFolder
    "NodeCorpus"
      -> pure NodeCorpus
    "NodeCorpusV3"
      -> pure NodeCorpusV3
    "NodeTexts"
      -> pure NodeTexts
    "NodeDocument"
      -> pure NodeDocument
    "NodeAnnuaire"
      -> pure NodeAnnuaire
    "NodeContact"
      -> pure NodeContact
    "NodeGraph"
      -> pure NodeGraph
    "NodePhylo"
      -> pure NodePhylo
    "NodeDashboard"
      -> pure NodeDashboard
    "NodeList"
      -> pure NodeList
    "NodeModel"
      -> pure NodeModel
    "NodeListCooc"
      -> pure NodeListCooc
    "Notes"
      -> pure Notes
    "Calc"
      -> pure Calc
    "NodeFrameVisio"
      -> pure NodeFrameVisio
    "NodeFrameNotebook"
      -> pure NodeFrameNotebook
    "NodeFile"
      -> pure NodeFile
    unhandled
      -> typeMismatch "NodeType" (JSON.String unhandled)

-- | FIXME(adn) these instances could reuse the fromJSON/toJSON instances,
-- but for some reason this broke the frontend:
-- https://gitlab.iscpif.fr/gargantext/haskell-gargantext/merge_requests/277#note_10388
instance FromHttpApiData NodeType where
  parseUrlPiece = Right . read . unpack
instance ToHttpApiData NodeType where
  toUrlPiece = pack . show
instance ToParamSchema NodeType
instance ToSchema      NodeType
instance Arbitrary NodeType where
  arbitrary = arbitraryBoundedEnum
instance FromField NodeType where
  fromField = fromJSONField
instance ToField NodeType where
  toField = toJSONField


allNodeTypes :: [NodeType]
allNodeTypes = [minBound .. maxBound]

defaultName :: NodeType -> Text
defaultName NodeUser       = "User"
defaultName NodeContact    = "Contact"

defaultName NodeCorpus     = "Corpus"
defaultName NodeCorpusV3   = "Corpus"
defaultName NodeAnnuaire   = "Annuaire"

defaultName NodeDocument   = "Doc"
defaultName NodeTexts      = "Docs"
defaultName NodeList       = "Terms"
defaultName NodeListCooc   = "List"
defaultName NodeModel      = "Model"

defaultName NodeFolder        = "Folder"
defaultName NodeFolderPrivate = "Private"
defaultName NodeFolderShared  = "Share"
defaultName NodeTeam          = "Team"
defaultName NodeFolderPublic  = "Public"

defaultName NodeDashboard     = "Board"
defaultName NodeGraph         = "Graph"
defaultName NodePhylo         = "Phylo"

defaultName Notes    = "Note"
defaultName Calc     = "Calc"
defaultName NodeFrameVisio    = "Visio"
defaultName NodeFrameNotebook = "Code"

defaultName NodeFile          = "File"



------------------------------------------------------------------------
-- Instances
------------------------------------------------------------------------
instance ToSchema Status where
  declareNamedSchema = genericDeclareNamedSchema (unPrefixSwagger "status_")

------------------------------------------------------------------------
{-
instance FromField (NodeId, Text)
  where
    fromField = fromField'
-}
------------------------------------------------------------------------
instance DefaultFromField SqlTSVector (Maybe TSVector)
  where
    defaultFromField = fromPGSFromField

instance DefaultFromField SqlInt4 (Maybe NodeId)
  where
    defaultFromField = fromPGSFromField

instance DefaultFromField SqlInt4 NodeId
  where
    defaultFromField = fromPGSFromField

instance DefaultFromField (Nullable SqlInt4) NodeId
  where
    defaultFromField = fromPGSFromField

instance (DefaultFromField (Nullable O.SqlTimestamptz) UTCTime)
  where
    defaultFromField = fromPGSFromField

instance DefaultFromField SqlText (Maybe Hash)
  where
    defaultFromField = fromPGSFromField

---------------------------------------------------------------------

context2node :: Context a -> Node a
context2node (Context ci ch ct cu cp cn cd chy) = Node ci ch ct cu cp cn cd chy
