package config

import (
	"encoding"
	"time"

	"github.com/ipfs/go-cid"

	miner5 "github.com/filecoin-project/specs-actors/v5/actors/builtin/miner"

	"github.com/filecoin-project/lotus/chain/types"
	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
)

// Common is common config between full node and miner
type Common struct {
	API    API
	Backup Backup
	Libp2p Libp2p
	Pubsub Pubsub
}

// FullNode is a full node config
type FullNode struct {
	Common
	Client     Client
	Metrics    Metrics
	Wallet     Wallet
	Fees       FeeConfig
	Chainstore Chainstore
}

// // Common

type Backup struct {
	DisableMetadataLog bool
}

// StorageMiner is a miner config
type StorageMiner struct {
	Common

	Dealmaking DealmakingConfig
	Sealing    SealingConfig
	Storage    sectorstorage.SealerConfig
	Fees       MinerFeeConfig
	Addresses  MinerAddressConfig
}

type DealmakingConfig struct {
	ConsiderOnlineStorageDeals     bool
	ConsiderOfflineStorageDeals    bool
	ConsiderOnlineRetrievalDeals   bool
	ConsiderOfflineRetrievalDeals  bool
	ConsiderVerifiedStorageDeals   bool
	ConsiderUnverifiedStorageDeals bool
	PieceCidBlocklist              []cid.Cid
	ExpectedSealDuration           Duration
	// The amount of time to wait for more deals to arrive before
	// publishing
	PublishMsgPeriod Duration
	// The maximum number of deals to include in a single PublishStorageDeals
	// message
	MaxDealsPerPublishMsg uint64
	// The maximum collateral that the provider will put up against a deal,
	// as a multiplier of the minimum collateral bound
	MaxProviderCollateralMultiplier uint64

	Filter          string
	RetrievalFilter string
}

type SealingConfig struct {
	// 0 = no limit
	MaxWaitDealsSectors uint64

	// includes failed, 0 = no limit
	MaxSealingSectors uint64

	// includes failed, 0 = no limit
	MaxSealingSectorsForDeals uint64

	WaitDealsDelay Duration

	AlwaysKeepUnsealedCopy bool

	BatchPreCommits     bool
	MaxPreCommitBatch   int
	MinPreCommitBatch   int
	PreCommitBatchWait  Duration
	PreCommitBatchSlack Duration

	AggregateCommits bool
	MinCommitBatch   int
	MaxCommitBatch   int
	CommitBatchWait  Duration
	CommitBatchSlack Duration

	TerminateBatchMax  uint64
	TerminateBatchMin  uint64
	TerminateBatchWait Duration

	// Keep this many sectors in sealing pipeline, start CC if needed
	// todo TargetSealingSectors uint64

	// todo TargetSectors - stop auto-pleding new sectors after this many sectors are sealed, default CC upgrade for deals sectors if above
}

type MinerFeeConfig struct {
	MaxPreCommitGasFee     types.FIL
	MaxCommitGasFee        types.FIL
	MaxTerminateGasFee     types.FIL
	MaxWindowPoStGasFee    types.FIL
	MaxPublishDealsFee     types.FIL
	MaxMarketBalanceAddFee types.FIL
}

type MinerAddressConfig struct {
	PreCommitControl []string
	CommitControl    []string
	TerminateControl []string

	// DisableOwnerFallback disables usage of the owner address for messages
	// sent automatically
	DisableOwnerFallback bool
	// DisableWorkerFallback disables usage of the worker address for messages
	// sent automatically, if control addresses are configured.
	// A control address that doesn't have enough funds will still be chosen
	// over the worker address if this flag is set.
	DisableWorkerFallback bool
}

// API contains configs for API endpoint
type API struct {
	ListenAddress       string
	RemoteListenAddress string
	Timeout             Duration
}

// Libp2p contains configs for libp2p
type Libp2p struct {
	ListenAddresses     []string
	AnnounceAddresses   []string
	NoAnnounceAddresses []string
	BootstrapPeers      []string
	ProtectedPeers      []string

	ConnMgrLow   uint
	ConnMgrHigh  uint
	ConnMgrGrace Duration
}

type Pubsub struct {
	Bootstrapper          bool
	DirectPeers           []string
	IPColocationWhitelist []string
	RemoteTracer          string
}

type Chainstore struct {
	EnableSplitstore bool
	Splitstore       Splitstore
}

type Splitstore struct {
	HotStoreType         string
	TrackingStoreType    string
	MarkSetType          string
	EnableFullCompaction bool
	EnableGC             bool // EXPERIMENTAL
	Archival             bool
}

// // Full Node

type Metrics struct {
	Nickname   string
	HeadNotifs bool
}

type Client struct {
	UseIpfs               bool
	IpfsOnlineMode        bool
	IpfsMAddr             string
	IpfsUseForRetrieval   bool
	SimultaneousTransfers uint64
}

type Wallet struct {
	RemoteBackend string
	EnableLedger  bool
	DisableLocal  bool
}

type FeeConfig struct {
	DefaultMaxFee types.FIL
}

func defCommon() Common {
	return Common{
		API: API{
			ListenAddress: "/ip4/127.0.0.1/tcp/1234/http",
			Timeout:       Duration(30 * time.Second),
		},
		Libp2p: Libp2p{
			ListenAddresses: []string{
				"/ip4/0.0.0.0/tcp/0",
				"/ip6/::/tcp/0",
			},
			AnnounceAddresses:   []string{},
			NoAnnounceAddresses: []string{},

			ConnMgrLow:   150,
			ConnMgrHigh:  180,
			ConnMgrGrace: Duration(20 * time.Second),
		},
		Pubsub: Pubsub{
			Bootstrapper: false,
			DirectPeers:  nil,
			RemoteTracer: "/dns4/pubsub-tracer.filecoin.io/tcp/4001/p2p/QmTd6UvR47vUidRNZ1ZKXHrAFhqTJAD27rKL9XYghEKgKX",
		},
	}

}

var DefaultDefaultMaxFee = types.MustParseFIL("0.007")
var DefaultSimultaneousTransfers = uint64(20)

// DefaultFullNode returns the default config
func DefaultFullNode() *FullNode {
	return &FullNode{
		Common: defCommon(),
		Fees: FeeConfig{
			DefaultMaxFee: DefaultDefaultMaxFee,
		},
		Client: Client{
			SimultaneousTransfers: DefaultSimultaneousTransfers,
		},
		Chainstore: Chainstore{
			EnableSplitstore: false,
			Splitstore: Splitstore{
				HotStoreType: "badger",
			},
		},
	}
}

func DefaultStorageMiner() *StorageMiner {
	cfg := &StorageMiner{
		Common: defCommon(),

		Sealing: SealingConfig{
			MaxWaitDealsSectors:       2, // 64G with 32G sectors
			MaxSealingSectors:         0,
			MaxSealingSectorsForDeals: 0,
			WaitDealsDelay:            Duration(time.Hour * 6),
			AlwaysKeepUnsealedCopy:    true,

			BatchPreCommits:     true,
			MinPreCommitBatch:   1,                        // we must have at least one proof to aggregate
			MaxPreCommitBatch:   miner5.PreCommitSectorBatchMaxSize,                      //
			PreCommitBatchWait:  Duration(24 * time.Hour), // this can be up to 6 days
			PreCommitBatchSlack: Duration(3 * time.Hour),

			AggregateCommits: true,
			MinCommitBatch:   1,                        // we must have at least one proof to aggregate
			MaxCommitBatch:   miner5.MaxAggregatedSectors,                      // this is the maximum aggregation per FIP13
			CommitBatchWait:  Duration(24 * time.Hour), // this can be up to 6 days
			CommitBatchSlack: Duration(1 * time.Hour),

			TerminateBatchMin:  1,
			TerminateBatchMax:  100,
			TerminateBatchWait: Duration(5 * time.Minute),
		},

		Storage: sectorstorage.SealerConfig{
			AllowAddPiece:   true,
			AllowPreCommit1: true,
			AllowPreCommit2: true,
			AllowCommit:     true,
			AllowUnseal:     true,

			// Default to 10 - tcp should still be able to figure this out, and
			// it's the ratio between 10gbit / 1gbit
			ParallelFetchLimit: 10,
		},

		Dealmaking: DealmakingConfig{
			ConsiderOnlineStorageDeals:     true,
			ConsiderOfflineStorageDeals:    true,
			ConsiderOnlineRetrievalDeals:   true,
			ConsiderOfflineRetrievalDeals:  true,
			ConsiderVerifiedStorageDeals:   true,
			ConsiderUnverifiedStorageDeals: true,
			PieceCidBlocklist:              []cid.Cid{},
			// TODO: It'd be nice to set this based on sector size
			ExpectedSealDuration:            Duration(time.Hour * 24),
			PublishMsgPeriod:                Duration(time.Hour),
			MaxDealsPerPublishMsg:           8,
			MaxProviderCollateralMultiplier: 2,
		},

		Fees: MinerFeeConfig{
			MaxPreCommitGasFee:     types.MustParseFIL("0.025"),
			MaxCommitGasFee:        types.MustParseFIL("0.05"),
			MaxTerminateGasFee:     types.MustParseFIL("0.5"),
			MaxWindowPoStGasFee:    types.MustParseFIL("5"),
			MaxPublishDealsFee:     types.MustParseFIL("0.05"),
			MaxMarketBalanceAddFee: types.MustParseFIL("0.007"),
		},

		Addresses: MinerAddressConfig{
			PreCommitControl: []string{},
			CommitControl:    []string{},
		},
	}
	cfg.Common.API.ListenAddress = "/ip4/127.0.0.1/tcp/2345/http"
	cfg.Common.API.RemoteListenAddress = "127.0.0.1:2345"
	return cfg
}

var _ encoding.TextMarshaler = (*Duration)(nil)
var _ encoding.TextUnmarshaler = (*Duration)(nil)

// Duration is a wrapper type for time.Duration
// for decoding and encoding from/to TOML
type Duration time.Duration

// UnmarshalText implements interface for TOML decoding
func (dur *Duration) UnmarshalText(text []byte) error {
	d, err := time.ParseDuration(string(text))
	if err != nil {
		return err
	}
	*dur = Duration(d)
	return err
}

func (dur Duration) MarshalText() ([]byte, error) {
	d := time.Duration(dur)
	return []byte(d.String()), nil
}