{-# LANGUAGE DataKinds, GADTs, KindSignatures, TypeOperators, ScopedTypeVariables #-}
{-# LANGUAGE StrictData, BangPatterns, PatternSynonyms, ViewPatterns #-}
{-# LANGUAGE OverloadedStrings, RecordWildCards, DeriveGeneric, RankNTypes #-}
{-# LANGUAGE TypeFamilies, PolyKinds, ConstraintKinds, QuantifiedConstraints #-}
{-# LANGUAGE FunctionalDependencies, MultiParamTypeClasses, FlexibleInstances #-}
{-# LANGUAGE TemplateHaskell #-}

-- =====================================================================
-- QUANTUM PIPER: Manifest-Driven Orchestration for BOB Quantum Engine
-- Integrated into sov-kernel-monster
-- =====================================================================

module LiquidLean.QuantumPiper
  ( QPManifest(..)
  , QPImage(..)
  , QPRuntime(..)
  , ExecutionResult(..)
  , PipelineStage(..)
  , executeManifest
  , buildImage
  , initRuntime
  ) where

import Data.Text (Text)
import qualified Data.Text as T
import Data.ByteString (ByteString)
import qualified Data.ByteString as BS
import Data.Aeson (ToJSON, FromJSON, encode, decode, eitherDecode, object, (.=), withObject, (.:), Parser)
import GHC.Generics (Generic)
import Control.Monad.State.Strict
import Control.Monad.Except
import Control.Concurrent.STM
import Control.Concurrent.Async
import Data.List (foldl', sortBy)
import Data.Map.Strict (Map)
import qualified Data.Map.Strict as Map
import Data.Set (Set)
import qualified Data.Set as Set
import Data.Word (Word64, Word32, Word16, Word8)
import Data.Int (Int64)
import Data.Bits (xor, shiftR, shiftL, (.&.))
import Crypto.Hash (SHA3_256, hash, Digest)
import Crypto.PubKey.Ed25519 (PublicKey, SecretKey, sign, verify, toPublic, secretKey)
import qualified Data.ByteArray as BA
import Data.Time.Clock.POSIX (getPOSIXTime)
import Data.Maybe (fromMaybe, catMaybes, mapMaybe)
import System.FilePath ((</>), takeDirectory, takeFileName)
import System.Directory (createDirectoryIfMissing, doesFileExist, removePathForcibly)
import Foreign.C.Types
import Foreign.C.String
import Foreign.Ptr
import Foreign.Storable
import System.Process (callProcess)

-- =====================================================================
-- TYPE DEFINITIONS: BOB Quantum Workspace & Artifacts
-- =====================================================================

type TeamID = Text
type ArtifactHash = ByteString
type TxHash = ByteString
type ArtifactStore = TVar (Map ArtifactHash QArtifact)
type CapabilityStore = TVar (Map (Realm, TeamID) Capability)

data Realm
  = Hamiltonian | Trotter | Pulse | Verification | QuantumIR | Runtime | WORM
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON Realm
instance FromJSON Realm

data Permission = Read | Write | Verify | Calibrate | Deploy | Attest | Admin
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON Permission
instance FromJSON Permission

data Capability = Capability
  { capRealm :: Realm
  , capTeam :: TeamID
  , capPermissions :: Set Permission
  , capDenyPermissions :: Set Permission
  , capExpiration :: Maybe Word64
  , capNotes :: Text
  } deriving (Show, Generic)

instance ToJSON Capability
instance FromJSON Capability

data ArtifactType
  = FortranModule | CmmModule | MLIRModule | LLVMModule | PulseSchedule
  | IsabelleTheorem | ProofCertificate | ConfigFile
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON ArtifactType
instance FromJSON ArtifactType

data VerificationStatus
  = Unverified | TypeChecked | Alive2Verified [Text] | IsabelleProven | QuantumValidated
  deriving (Show, Generic)

instance ToJSON VerificationStatus
instance FromJSON VerificationStatus

data QuantumProperties = QuantumProperties
  { qpQubits :: Maybe Int
  , qpGateDepth :: Maybe Int
  , qpEntanglement :: Maybe Double
  } deriving (Show, Generic)

instance ToJSON QuantumProperties
instance FromJSON QuantumProperties

defaultQuantumProps :: QuantumProperties
defaultQuantumProps = QuantumProperties Nothing Nothing Nothing

data ArtifactMetadata = ArtifactMetadata
  { amCreated :: Word64
  , amTeam :: TeamID
  , amStatus :: VerificationStatus
  , amQuantumProps :: QuantumProperties
  , amSize :: Word64
  , amImmutable :: Bool
  } deriving (Show, Generic)

instance ToJSON ArtifactMetadata
instance FromJSON ArtifactMetadata

data QArtifact = QArtifact
  { qaHash :: ArtifactHash
  , qaType :: ArtifactType
  , qaRealm :: Realm
  , qaTeam :: TeamID
  , qaContent :: ByteString
  , qaMetadata :: ArtifactMetadata
  , qaDeps :: Set ArtifactHash
  , qaWORMAnchor :: Maybe TxHash
  } deriving (Show, Generic)

instance ToJSON QArtifact
instance FromJSON QArtifact

data QWorkspace = QWorkspace
  { wsRoot :: FilePath
  , wsTeam :: TeamID
  , wsArtifacts :: ArtifactStore
  , wsCapabilities :: CapabilityStore
  , wsWORM :: WORMChain
  } deriving (Generic)

data WORMChain = WORMChain
  { wcHead :: TVar BlockHeader
  , wcStore :: TVar (Map TxHash Block)
  , wcEd25519Key :: SecretKey
  } deriving (Generic)

data BlockHeader = BlockHeader
  { bhHeight :: Word64
  , bhMerkle :: Text
  , bhHash :: TxHash
  , bhTimestamp :: Word64
  } deriving (Show, Generic)

data Block = Block
  { bHeader :: BlockHeader
  , bTransactions :: [WORMTx]
  } deriving (Show, Generic)

data TxType = Theorem3Proof | QuantumExecution | PulseCompilation
  deriving (Show, Eq, Generic)

data WORMTx = WORMTx
  { wtType :: TxType
  , wtData :: ByteString
  , wtSignature :: ByteString
  } deriving (Show, Generic)

-- =====================================================================
-- MLIR & COMPILATION CONFIGURATION
-- =====================================================================

data MLIRPass = Canonicalize | CSE | QuantumGateFusion | LoopFusion | Vectorize
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON MLIRPass
instance FromJSON MLIRPass

data OptLevel = O0 | O1 | O2 | O3 | Os | Oz
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON OptLevel
instance FromJSON OptLevel

data TargetArch = X86_64 | ARM64 | PTX | WASM32
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON TargetArch
instance FromJSON TargetArch

data OverlayFS = OverLayFS
  { ofLayers :: Map FilePath ArtifactHash
  , ofMounts :: Map FilePath (Set FilePath)
  , ofDirty :: Set FilePath
  } deriving (Show, Generic)

data ProofCache = ProofCache
  { pcStore :: TVar (Map Text ByteString)
  , pcPeers :: TVar [Text]
  , pcPolicy :: CachePolicy
  , pcMaxSize :: Word64
  , pcTTL :: Word64
  , pcMinVerified :: VerificationStatus
  , pcReplicationFactor :: Int
  } deriving (Generic)

data CachePolicy = CachePolicy
  deriving (Show, Generic)

instance ToJSON CachePolicy
instance FromJSON CachePolicy

-- =====================================================================
-- MANIFEST TYPES
-- =====================================================================

data QPManifest = QPManifest
  { qpmVersion :: Text
  , qpmWorkspace :: Text
  , qpmRealm :: Realm
  , qpmTeam :: TeamID
  , qpmInputs :: [ManifestInput]
  , qpmPipeline :: [PipelineStage]
  , qpmOutputs :: [ManifestOutput]
  , qpmEnvironment :: EnvironmentSpec
  , qpmResources :: ResourceLimits
  , qpmCapabilities :: [CapabilityReq]
  , qpmAttestations :: [AttestationReq]
  } deriving (Show, Generic)

instance ToJSON QPManifest
instance FromJSON QPManifest

data ManifestInput
  = InputCAS ArtifactHash
  | InputPath FilePath
  | InputManifest Text
  deriving (Show, Generic)

instance ToJSON ManifestInput
instance FromJSON ManifestInput

data ManifestOutput
  = OutputCAS ArtifactType Text
  | OutputFile FilePath ArtifactType
  | OutputWASM FilePath
  | OutputNative FilePath
  | OutputPulse FilePath
  | OutputProof FilePath
  deriving (Show, Generic)

instance ToJSON ManifestOutput
instance FromJSON ManifestOutput

data PipelineStage
  = StageFortran FortranConfig
  | StageCmm CmmConfig
  | StageMLIR MLIRConfig
  | StageLLVM LLVMConfig
  | StageAlive2 Alive2Config
  | StageIsabelle IsabelleConfig
  | StageQuantumVerify QuantumVerifyConfig
  | StagePulseCompile PulseCompileConfig
  | StageWASM WASMConfig
  | StageNative NativeConfig
  | StageCustom CustomStageConfig
  deriving (Show, Generic)

instance ToJSON PipelineStage where
  toJSON (StageFortran c) = object ["type" .= ("fortran" :: Text), "config" .= c]
  toJSON (StageCmm c) = object ["type" .= ("cmm" :: Text), "config" .= c]
  toJSON (StageMLIR c) = object ["type" .= ("mlir" :: Text), "config" .= c]
  toJSON (StageLLVM c) = object ["type" .= ("llvm" :: Text), "config" .= c]
  toJSON (StageAlive2 c) = object ["type" .= ("alive2" :: Text), "config" .= c]
  toJSON (StageIsabelle c) = object ["type" .= ("isabelle" :: Text), "config" .= c]
  toJSON (StageQuantumVerify c) = object ["type" .= ("quantum-verify" :: Text), "config" .= c]
  toJSON (StagePulseCompile c) = object ["type" .= ("pulse-compile" :: Text), "config" .= c]
  toJSON (StageWASM c) = object ["type" .= ("wasm" :: Text), "config" .= c]
  toJSON (StageNative c) = object ["type" .= ("native" :: Text), "config" .= c]
  toJSON (StageCustom c) = object ["type" .= ("custom" :: Text), "config" .= c]

instance FromJSON PipelineStage where
  parseJSON = withObject "PipelineStage" $ \v -> do
    stageType <- v .: "type" :: Parser Text
    config <- v .: "config"
    case stageType of
      "fortran" -> StageFortran <$> parseJSON config
      "cmm" -> StageCmm <$> parseJSON config
      "mlir" -> StageMLIR <$> parseJSON config
      "llvm" -> StageLLVM <$> parseJSON config
      "alive2" -> StageAlive2 <$> parseJSON config
      "isabelle" -> StageIsabelle <$> parseJSON config
      "quantum-verify" -> StageQuantumVerify <$> parseJSON config
      "pulse-compile" -> StagePulseCompile <$> parseJSON config
      "wasm" -> StageWASM <$> parseJSON config
      "native" -> StageNative <$> parseJSON config
      "custom" -> StageCustom <$> parseJSON config
      _ -> fail $ "Unknown PipelineStage type: " ++ T.unpack stageType

data FortranConfig = FortranConfig
  { fcSourceFiles :: [FilePath]
  , fcFlags :: [Text]
  , fcOutputModule :: Text
  , fcOptimization :: OptLevel
  } deriving (Show, Generic)

instance ToJSON FortranConfig
instance FromJSON FortranConfig

data CmmConfig = CmmConfig
  { ccInputModule :: Text
  , ccOutputModule :: Text
  , ccTarget :: TargetArch
  } deriving (Show, Generic)

instance ToJSON CmmConfig
instance FromJSON CmmConfig

data MLIRConfig = MLIRConfig
  { mcInputModule :: Text
  , mcOutputModule :: Text
  , mcPasses :: [MLIRPass]
  , mcDialects :: [Text]
  } deriving (Show, Generic)

instance ToJSON MLIRConfig
instance FromJSON MLIRConfig

data LLVMConfig = LLVMConfig
  { lcInputModule :: Text
  , lcOutputModule :: Text
  , lcTargetTriple :: Text
  , lcOptLevel :: OptLevel
  , lcEnableVerifier :: Bool
  } deriving (Show, Generic)

instance ToJSON LLVMConfig
instance FromJSON LLVMConfig

data Alive2Config = Alive2Config
  { acSpecFile :: FilePath
  , acSourceIR :: Text
  , acTargetIR :: Text
  , acTimeout :: Int
  } deriving (Show, Generic)

instance ToJSON Alive2Config
instance FromJSON Alive2Config

data IsabelleConfig = IsabelleConfig
  { icTheoryFile :: FilePath
  , icImports :: [Text]
  , icProofMethod :: Text
  } deriving (Show, Generic)

instance ToJSON IsabelleConfig
instance FromJSON IsabelleConfig

data QuantumVerifyConfig = QuantumVerifyConfig
  { qvcCircuitFile :: FilePath
  , qvcChecks :: [QuantumCheck]
  } deriving (Show, Generic)

instance ToJSON QuantumVerifyConfig
instance FromJSON QuantumVerifyConfig

data QuantumCheck
  = CheckUnitarity | CheckNoCloning | CheckLinearity | CheckQubitCount Int
  | CheckDepth Int | CheckEntanglement Text
  deriving (Show, Generic)

instance ToJSON QuantumCheck
instance FromJSON QuantumCheck

data PulseCompileConfig = PulseCompileConfig
  { pccBackend :: Text
  , pccTarget :: PulseTarget
  , pccConstraints :: PulseConstraints
  } deriving (Show, Generic)

instance ToJSON PulseCompileConfig
instance FromJSON PulseCompileConfig

data PulseTarget = PulseIBM | PulseOpenPulse | PulseCustom Text
  deriving (Show, Generic)

instance ToJSON PulseTarget
instance FromJSON PulseTarget

data PulseConstraints = PulseConstraints
  { pcMaxAmplitude :: Double
  , pcMaxFrequency :: Double
  , pcSampleRate :: Word64
  , pcAlignment :: Word64
  , pcCrossTalkSuppression :: Bool
  } deriving (Show, Generic)

instance ToJSON PulseConstraints
instance FromJSON PulseConstraints

data WASMConfig = WASMConfig
  { wcInputModule :: Text
  , wcOutputFile :: FilePath
  , wcImports :: [Text]
  , wcExports :: [Text]
  } deriving (Show, Generic)

instance ToJSON WASMConfig
instance FromJSON WASMConfig

data NativeConfig = NativeConfig
  { ncInputModule :: Text
  , ncOutputFile :: FilePath
  , ncTargetTriple :: Text
  , ncLinkLibs :: [Text]
  } deriving (Show, Generic)

instance ToJSON NativeConfig
instance FromJSON NativeConfig

data CustomStageConfig = CustomStageConfig
  { cscCommand :: Text
  , cscArgs :: [Text]
  , cscEnv :: Map Text Text
  , cscInputs :: [Text]
  , cscOutputs :: [Text]
  } deriving (Show, Generic)

instance ToJSON CustomStageConfig
instance FromJSON CustomStageConfig

data EnvironmentSpec = EnvironmentSpec
  { esVariables :: Map Text Text
  , esMounts :: [MountSpec]
  , esDevices :: [DeviceSpec]
  , esNetwork :: NetworkMode
  , esUser :: Maybe Text
  } deriving (Show, Generic)

instance ToJSON EnvironmentSpec
instance FromJSON EnvironmentSpec

data MountSpec = MountSpec
  { msSource :: Text
  , msTarget :: FilePath
  , msReadOnly :: Bool
  , msType :: MountType
  } deriving (Show, Generic)

instance ToJSON MountSpec
instance FromJSON MountSpec

data MountType = Bind | CAS | Tmpfs | Volume
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON MountType
instance FromJSON MountType

data DeviceSpec = DeviceSpec
  { dsPath :: FilePath
  , dsPermissions :: Text
  } deriving (Show, Generic)

instance ToJSON DeviceSpec
instance FromJSON DeviceSpec

data NetworkMode = NetworkNone | NetworkHost | NetworkBridge Text
  deriving (Show, Eq, Ord, Generic)

instance ToJSON NetworkMode
instance FromJSON NetworkMode

data ResourceLimits = ResourceLimits
  { rlCPU :: Maybe Double
  , rlMemory :: Maybe Word64
  , rlDisk :: Maybe Word64
  , rlGPU :: Maybe Int
  , rlTime :: Maybe Int
  , rlPIDs :: Maybe Int
  } deriving (Show, Generic)

instance ToJSON ResourceLimits
instance FromJSON ResourceLimits

defaultResourceLimits :: ResourceLimits
defaultResourceLimits = ResourceLimits
  { rlCPU = Just 4.0
  , rlMemory = Just (8 * 1024 * 1024 * 1024)
  , rlDisk = Just (10 * 1024 * 1024 * 1024)
  , rlGPU = Just 1
  , rlTime = Just 3600
  , rlPIDs = Just 256
  }

data CapabilityReq = CapabilityReq
  { crRealm :: Realm
  , crPermissions :: [Permission]
  } deriving (Show, Generic)

instance ToJSON CapabilityReq
instance FromJSON CapabilityReq

data AttestationReq = AttestationReq
  { arStage :: Text
  , arType :: AttestationType
  } deriving (Show, Generic)

instance ToJSON AttestationReq
instance FromJSON AttestationReq

data AttestationType = AttestBuild | AttestVerify | AttestDeploy | AttestQuantum
  deriving (Show, Eq, Ord, Generic, Enum, Bounded)

instance ToJSON AttestationType
instance FromJSON AttestationType

-- =====================================================================
-- IMAGE & RUNTIME
-- =====================================================================

data QPImage = QPImage
  { qpiManifestHash :: ArtifactHash
  , qpiManifest :: QPManifest
  , qpiArtifacts :: Map ArtifactHash QArtifact
  , qpiLayerHashes :: [ArtifactHash]
  , qpiSignature :: ByteString
  } deriving (Show, Generic)

instance ToJSON QPImage
instance FromJSON QPImage

data StageResult = StageResult
  { srStage :: Text
  , srInputs :: Map Text ArtifactHash
  , srOutputs :: Map Text ArtifactHash
  , srLogs :: [Text]
  , srDuration :: Double
  , srSuccess :: Bool
  , srAttestation :: Maybe TxHash
  } deriving (Show, Generic)

instance ToJSON StageResult
instance FromJSON StageResult

data ExecutionResult = ExecutionResult
  { erImageHash :: ArtifactHash
  , erStageResults :: [StageResult]
  , erOutputs :: [ArtifactHash]
  , erDuration :: Double
  , erSuccess :: Bool
  } deriving (Show, Generic)

instance ToJSON ExecutionResult
instance FromJSON ExecutionResult

data QPRuntime = QPRuntime
  { qprWorkspace :: QWorkspace
  , qprImageStore :: TVar (Map ArtifactHash QPImage)
  } deriving (Generic)

-- =====================================================================
-- FORTRAN FFI BRIDGE
-- =====================================================================

foreign import ccall unsafe "bob_theorem3_enforce_genus_zero"
  c_theorem3_enforce :: CString -> CInt -> IO CInt

foreign import ccall unsafe "bob_worm_chain_checkpoint"
  c_worm_checkpoint :: Ptr () -> CString -> IO CInt

foreign import ccall unsafe "bob_worm_chain_restore"
  c_worm_restore :: Ptr () -> CString -> IO CInt

-- =====================================================================
-- CORE OPERATIONS
-- =====================================================================

buildImage :: QWorkspace -> QPManifest -> IO (Either String QPImage)
buildImage ws manifest = do
  let manifestBytes = encode manifest
  let manifestHash = hash manifestBytes
  let image = QPImage
        { qpiManifestHash = manifestHash
        , qpiManifest = manifest
        , qpiArtifacts = Map.empty
        , qpiLayerHashes = []
        , qpiSignature = ""
        }
  pure (Right image)

executePipeline :: QWorkspace -> QPManifest -> IO (Either String (Map ArtifactHash QArtifact, [StageResult]))
executePipeline ws manifest = do
  pure (Right (Map.empty, []))

executeManifest :: QPRuntime -> QPManifest -> IO (Either String ExecutionResult)
executeManifest runtime manifest = do
  startTime <- getPOSIXTime
  let ws = qprWorkspace runtime

  result <- executePipeline ws manifest
  case result of
    Left err -> pure (Left err)
    Right (finalArtifacts, stageResults) -> do
      imageResult <- buildImage ws manifest
      case imageResult of
        Left err -> pure (Left err)
        Right image -> do
          atomically $ modifyTVar' (qprImageStore runtime) (Map.insert (qpiManifestHash image) image)
          endTime <- getPOSIXTime
          pure (Right ExecutionResult
            { erImageHash = qpiManifestHash image
            , erStageResults = stageResults
            , erOutputs = Map.keys finalArtifacts
            , erDuration = realToFrac (endTime - startTime)
            , erSuccess = True
            })

initRuntime :: FilePath -> TeamID -> IO QPRuntime
initRuntime root team = do
  -- Initialize WORM chain with deterministic key from team ID
  -- In production: load from secure keyfile or KMS (e.g., AWS Secrets Manager)
  wcHeadVar <- newTVarIO (BlockHeader 0 "" "" 0)
  wcStoreVar <- newTVarIO Map.empty

  -- Derive 32-byte seed from team ID hash (secure only for testing)
  let teamStr = T.unpack team
      teamHash = hash (BS.pack teamStr) :: Digest SHA3_256
      seedBytes = BA.take 32 (BA.convert teamHash) :: ByteString

  case secretKey seedBytes of
    Just sk -> do
      let worm = WORMChain wcHeadVar wcStoreVar sk

      -- Initialize workspace
      artifactsVar <- newTVarIO Map.empty
      capsVar <- newTVarIO Map.empty

      let ws = QWorkspace root team artifactsVar capsVar worm

      -- Initialize runtime
      imageStoreVar <- newTVarIO Map.empty

      pure QPRuntime
        { qprWorkspace = ws
        , qprImageStore = imageStoreVar
        }
    Nothing -> fail "initRuntime: Failed to derive Ed25519 key from team ID"