package main

import (
	"fmt"
	"os"
	"sort"
	"strconv"
	"strings"
	"time"

	"github.com/docker/go-units"
	"github.com/fatih/color"
	"github.com/urfave/cli/v2"
	"golang.org/x/xerrors"

	"github.com/filecoin-project/go-state-types/abi"
	"github.com/filecoin-project/go-state-types/big"

	"github.com/filecoin-project/lotus/api"
	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
	"github.com/filecoin-project/lotus/chain/actors/policy"
	"github.com/filecoin-project/lotus/chain/types"
	"github.com/filecoin-project/lotus/lib/tablewriter"

	lcli "github.com/filecoin-project/lotus/cli"
	sealing "github.com/filecoin-project/lotus/extern/storage-sealing"
)

var sectorsCmd = &cli.Command{
	Name:  "sectors",
	Usage: "interact with sector store",
	Subcommands: []*cli.Command{
		sectorsStatusCmd,
		sectorsListCmd,
		sectorsRefsCmd,
		sectorsUpdateCmd,
		sectorsPledgeCmd,
		sectorsTerminateCmd,
		sectorsRemoveCmd,
		sectorsMarkForUpgradeCmd,
		sectorsStartSealCmd,
		sectorsSealDelayCmd,
		sectorsCapacityCollateralCmd,
	},
}

var sectorsPledgeCmd = &cli.Command{
	Name:  "pledge",
	Usage: "store random data in a sector",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)

		return nodeApi.PledgeSector(ctx)
	},
}

var sectorsStatusCmd = &cli.Command{
	Name:      "status",
	Usage:     "Get the seal status of a sector by its number",
	ArgsUsage: "<sectorNum>",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "log",
			Usage: "display event log",
		},
		&cli.BoolFlag{
			Name:  "on-chain-info",
			Usage: "show sector on chain info",
		},
	},
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)

		if !cctx.Args().Present() {
			return fmt.Errorf("must specify sector number to get status of")
		}

		id, err := strconv.ParseUint(cctx.Args().First(), 10, 64)
		if err != nil {
			return err
		}

		onChainInfo := cctx.Bool("on-chain-info")
		status, err := nodeApi.SectorsStatus(ctx, abi.SectorNumber(id), onChainInfo)
		if err != nil {
			return err
		}

		fmt.Printf("SectorID:\t%d\n", status.SectorID)
		fmt.Printf("Status:\t\t%s\n", status.State)
		fmt.Printf("CIDcommD:\t%s\n", status.CommD)
		fmt.Printf("CIDcommR:\t%s\n", status.CommR)
		fmt.Printf("Ticket:\t\t%x\n", status.Ticket.Value)
		fmt.Printf("TicketH:\t%d\n", status.Ticket.Epoch)
		fmt.Printf("Seed:\t\t%x\n", status.Seed.Value)
		fmt.Printf("SeedH:\t\t%d\n", status.Seed.Epoch)
		fmt.Printf("Precommit:\t%s\n", status.PreCommitMsg)
		fmt.Printf("Commit:\t\t%s\n", status.CommitMsg)
		fmt.Printf("Proof:\t\t%x\n", status.Proof)
		fmt.Printf("Deals:\t\t%v\n", status.Deals)
		fmt.Printf("Retries:\t%d\n", status.Retries)
		if status.LastErr != "" {
			fmt.Printf("Last Error:\t\t%s\n", status.LastErr)
		}

		if onChainInfo {
			fmt.Printf("\nSector On Chain Info\n")
			fmt.Printf("SealProof:\t\t%x\n", status.SealProof)
			fmt.Printf("Activation:\t\t%v\n", status.Activation)
			fmt.Printf("Expiration:\t\t%v\n", status.Expiration)
			fmt.Printf("DealWeight:\t\t%v\n", status.DealWeight)
			fmt.Printf("VerifiedDealWeight:\t\t%v\n", status.VerifiedDealWeight)
			fmt.Printf("InitialPledge:\t\t%v\n", status.InitialPledge)
			fmt.Printf("\nExpiration Info\n")
			fmt.Printf("OnTime:\t\t%v\n", status.OnTime)
			fmt.Printf("Early:\t\t%v\n", status.Early)
		}

		if cctx.Bool("log") {
			fmt.Printf("--------\nEvent Log:\n")

			for i, l := range status.Log {
				fmt.Printf("%d.\t%s:\t[%s]\t%s\n", i, time.Unix(int64(l.Timestamp), 0), l.Kind, l.Message)
				if l.Trace != "" {
					fmt.Printf("\t%s\n", l.Trace)
				}
			}
		}
		return nil
	},
}

var sectorsListCmd = &cli.Command{
	Name:  "list",
	Usage: "List sectors",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "show-removed",
			Usage: "show removed sectors",
		},
		&cli.BoolFlag{
			Name:    "color",
			Aliases: []string{"c"},
			Value:   true,
		},
		&cli.BoolFlag{
			Name:  "fast",
			Usage: "don't show on-chain info for better performance",
		},
		&cli.BoolFlag{
			Name:  "events",
			Usage: "display number of events the sector has received",
		},
		&cli.BoolFlag{
			Name:  "seal-time",
			Usage: "display how long it took for the sector to be sealed",
		},
		&cli.StringFlag{
			Name:  "states",
			Usage: "filter sectors by a comma-separated list of states",
		},
	},
	Action: func(cctx *cli.Context) error {
		color.NoColor = !cctx.Bool("color")

		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()

		fullApi, closer2, err := lcli.GetFullNodeAPI(cctx) // TODO: consider storing full node address in config
		if err != nil {
			return err
		}
		defer closer2()

		ctx := lcli.ReqContext(cctx)

		var list []abi.SectorNumber

		showRemoved := cctx.Bool("show-removed")
		states := cctx.String("states")
		if len(states) == 0 {
			list, err = nodeApi.SectorsList(ctx)
		} else {
			showRemoved = true
			sList := strings.Split(states, ",")
			ss := make([]api.SectorState, len(sList))
			for i := range sList {
				ss[i] = api.SectorState(sList[i])
			}
			list, err = nodeApi.SectorsListInStates(ctx, ss)
		}

		if err != nil {
			return err
		}

		maddr, err := nodeApi.ActorAddress(ctx)
		if err != nil {
			return err
		}

		head, err := fullApi.ChainHead(ctx)
		if err != nil {
			return err
		}

		activeSet, err := fullApi.StateMinerActiveSectors(ctx, maddr, head.Key())
		if err != nil {
			return err
		}
		activeIDs := make(map[abi.SectorNumber]struct{}, len(activeSet))
		for _, info := range activeSet {
			activeIDs[info.SectorNumber] = struct{}{}
		}

		sset, err := fullApi.StateMinerSectors(ctx, maddr, nil, head.Key())
		if err != nil {
			return err
		}
		commitedIDs := make(map[abi.SectorNumber]struct{}, len(sset))
		for _, info := range sset {
			commitedIDs[info.SectorNumber] = struct{}{}
		}

		sort.Slice(list, func(i, j int) bool {
			return list[i] < list[j]
		})

		tw := tablewriter.New(
			tablewriter.Col("ID"),
			tablewriter.Col("State"),
			tablewriter.Col("OnChain"),
			tablewriter.Col("Active"),
			tablewriter.Col("Expiration"),
			tablewriter.Col("SealTime"),
			tablewriter.Col("Events"),
			tablewriter.Col("Deals"),
			tablewriter.Col("DealWeight"),
			tablewriter.Col("VerifiedPower"),
			tablewriter.NewLineCol("Error"),
			tablewriter.NewLineCol("RecoveryTimeout"))

		fast := cctx.Bool("fast")

		for _, s := range list {
			st, err := nodeApi.SectorsStatus(ctx, s, !fast)
			if err != nil {
				tw.Write(map[string]interface{}{
					"ID":    s,
					"Error": err,
				})
				continue
			}

			if showRemoved || st.State != api.SectorState(sealing.Removed) {
				_, inSSet := commitedIDs[s]
				_, inASet := activeIDs[s]

				dw, vp := .0, .0
				if st.Expiration-st.Activation > 0 {
					rdw := big.Add(st.DealWeight, st.VerifiedDealWeight)
					dw = float64(big.Div(rdw, big.NewInt(int64(st.Expiration-st.Activation))).Uint64())
					vp = float64(big.Div(big.Mul(st.VerifiedDealWeight, big.NewInt(9)), big.NewInt(int64(st.Expiration-st.Activation))).Uint64())
				}

				var deals int
				for _, deal := range st.Deals {
					if deal != 0 {
						deals++
					}
				}

				exp := st.Expiration
				if st.OnTime > 0 && st.OnTime < exp {
					exp = st.OnTime // Can be different when the sector was CC upgraded
				}

				m := map[string]interface{}{
					"ID":      s,
					"State":   color.New(stateOrder[sealing.SectorState(st.State)].col).Sprint(st.State),
					"OnChain": yesno(inSSet),
					"Active":  yesno(inASet),
				}

				if deals > 0 {
					m["Deals"] = color.GreenString("%d", deals)
				} else {
					m["Deals"] = color.BlueString("CC")
					if st.ToUpgrade {
						m["Deals"] = color.CyanString("CC(upgrade)")
					}
				}

				if !fast {
					if !inSSet {
						m["Expiration"] = "n/a"
					} else {
						m["Expiration"] = lcli.EpochTime(head.Height(), exp)

						if !fast && deals > 0 {
							m["DealWeight"] = units.BytesSize(dw)
							if vp > 0 {
								m["VerifiedPower"] = color.GreenString(units.BytesSize(vp))
							}
						}

						if st.Early > 0 {
							m["RecoveryTimeout"] = color.YellowString(lcli.EpochTime(head.Height(), st.Early))
						}
					}
				}

				if cctx.Bool("events") {
					var events int
					for _, sectorLog := range st.Log {
						if !strings.HasPrefix(sectorLog.Kind, "event") {
							continue
						}
						if sectorLog.Kind == "event;sealing.SectorRestart" {
							continue
						}
						events++
					}

					pieces := len(st.Deals)

					switch {
					case events < 12+pieces:
						m["Events"] = color.GreenString("%d", events)
					case events < 20+pieces:
						m["Events"] = color.YellowString("%d", events)
					default:
						m["Events"] = color.RedString("%d", events)
					}
				}

				if cctx.Bool("seal-time") && len(st.Log) > 1 {
					start := time.Unix(int64(st.Log[0].Timestamp), 0)

					for _, sectorLog := range st.Log {
						if sectorLog.Kind == "event;sealing.SectorProving" {
							end := time.Unix(int64(sectorLog.Timestamp), 0)
							dur := end.Sub(start)

							switch {
							case dur < 12*time.Hour:
								m["SealTime"] = color.GreenString("%s", dur)
							case dur < 24*time.Hour:
								m["SealTime"] = color.YellowString("%s", dur)
							default:
								m["SealTime"] = color.RedString("%s", dur)
							}

							break
						}
					}
				}

				tw.Write(m)
			}
		}

		return tw.Flush(os.Stdout)
	},
}

var sectorsRefsCmd = &cli.Command{
	Name:  "refs",
	Usage: "List References to sectors",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)

		refs, err := nodeApi.SectorsRefs(ctx)
		if err != nil {
			return err
		}

		for name, refs := range refs {
			fmt.Printf("Block %s:\n", name)
			for _, ref := range refs {
				fmt.Printf("\t%d+%d %d bytes\n", ref.SectorID, ref.Offset, ref.Size)
			}
		}
		return nil
	},
}

var sectorsTerminateCmd = &cli.Command{
	Name:      "terminate",
	Usage:     "Terminate sector on-chain then remove (WARNING: This means losing power and collateral for the removed sector)",
	ArgsUsage: "<sectorNum>",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "really-do-it",
			Usage: "pass this flag if you know what you are doing",
		},
	},
	Subcommands: []*cli.Command{
		sectorsTerminateFlushCmd,
		sectorsTerminatePendingCmd,
	},
	Action: func(cctx *cli.Context) error {
		if !cctx.Bool("really-do-it") {
			return xerrors.Errorf("pass --really-do-it to confirm this action")
		}
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)
		if cctx.Args().Len() != 1 {
			return xerrors.Errorf("must pass sector number")
		}

		id, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		return nodeApi.SectorTerminate(ctx, abi.SectorNumber(id))
	},
}

var sectorsTerminateFlushCmd = &cli.Command{
	Name:  "flush",
	Usage: "Send a terminate message if there are sectors queued for termination",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)

		mcid, err := nodeApi.SectorTerminateFlush(ctx)
		if err != nil {
			return err
		}

		if mcid == nil {
			return xerrors.New("no sectors were queued for termination")
		}

		fmt.Println(mcid)

		return nil
	},
}

var sectorsTerminatePendingCmd = &cli.Command{
	Name:  "pending",
	Usage: "List sector numbers of sectors pending termination",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		api, nCloser, err := lcli.GetFullNodeAPI(cctx)
		if err != nil {
			return err
		}
		defer nCloser()
		ctx := lcli.ReqContext(cctx)

		pending, err := nodeApi.SectorTerminatePending(ctx)
		if err != nil {
			return err
		}

		maddr, err := nodeApi.ActorAddress(ctx)
		if err != nil {
			return err
		}

		dl, err := api.StateMinerProvingDeadline(ctx, maddr, types.EmptyTSK)
		if err != nil {
			return xerrors.Errorf("getting proving deadline info failed: %w", err)
		}

		for _, id := range pending {
			loc, err := api.StateSectorPartition(ctx, maddr, id.Number, types.EmptyTSK)
			if err != nil {
				return xerrors.Errorf("finding sector partition: %w", err)
			}

			fmt.Print(id.Number)

			if loc.Deadline == (dl.Index+1)%miner.WPoStPeriodDeadlines || // not in next (in case the terminate message takes a while to get on chain)
				loc.Deadline == dl.Index || // not in current
				(loc.Deadline+1)%miner.WPoStPeriodDeadlines == dl.Index { // not in previous
				fmt.Print(" (in proving window)")
			}
			fmt.Println()
		}

		return nil
	},
}

var sectorsRemoveCmd = &cli.Command{
	Name:      "remove",
	Usage:     "Forcefully remove a sector (WARNING: This means losing power and collateral for the removed sector (use 'terminate' for lower penalty))",
	ArgsUsage: "<sectorNum>",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "really-do-it",
			Usage: "pass this flag if you know what you are doing",
		},
	},
	Action: func(cctx *cli.Context) error {
		if !cctx.Bool("really-do-it") {
			return xerrors.Errorf("this is a command for advanced users, only use it if you are sure of what you are doing")
		}
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)
		if cctx.Args().Len() != 1 {
			return xerrors.Errorf("must pass sector number")
		}

		id, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		return nodeApi.SectorRemove(ctx, abi.SectorNumber(id))
	},
}

var sectorsMarkForUpgradeCmd = &cli.Command{
	Name:      "mark-for-upgrade",
	Usage:     "Mark a committed capacity sector for replacement by a sector with deals",
	ArgsUsage: "<sectorNum>",
	Action: func(cctx *cli.Context) error {
		if cctx.Args().Len() != 1 {
			return lcli.ShowHelp(cctx, xerrors.Errorf("must pass sector number"))
		}

		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)

		id, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		return nodeApi.SectorMarkForUpgrade(ctx, abi.SectorNumber(id))
	},
}

var sectorsStartSealCmd = &cli.Command{
	Name:      "seal",
	Usage:     "Manually start sealing a sector (filling any unused space with junk)",
	ArgsUsage: "<sectorNum>",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)
		if cctx.Args().Len() != 1 {
			return xerrors.Errorf("must pass sector number")
		}

		id, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		return nodeApi.SectorStartSealing(ctx, abi.SectorNumber(id))
	},
}

var sectorsSealDelayCmd = &cli.Command{
	Name:      "set-seal-delay",
	Usage:     "Set the time, in minutes, that a new sector waits for deals before sealing starts",
	ArgsUsage: "<minutes>",
	Action: func(cctx *cli.Context) error {
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)
		if cctx.Args().Len() != 1 {
			return xerrors.Errorf("must pass duration in minutes")
		}

		hs, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		delay := hs * uint64(time.Minute)

		return nodeApi.SectorSetSealDelay(ctx, time.Duration(delay))
	},
}

var sectorsCapacityCollateralCmd = &cli.Command{
	Name:  "get-cc-collateral",
	Usage: "Get the collateral required to pledge a committed capacity sector",
	Flags: []cli.Flag{
		&cli.Uint64Flag{
			Name:  "expiration",
			Usage: "the epoch when the sector will expire",
		},
	},
	Action: func(cctx *cli.Context) error {

		mApi, mCloser, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer mCloser()

		nApi, nCloser, err := lcli.GetFullNodeAPI(cctx)
		if err != nil {
			return err
		}
		defer nCloser()

		ctx := lcli.ReqContext(cctx)

		maddr, err := mApi.ActorAddress(ctx)
		if err != nil {
			return err
		}

		pci := miner.SectorPreCommitInfo{
			Expiration: abi.ChainEpoch(cctx.Uint64("expiration")),
		}
		if pci.Expiration == 0 {
			pci.Expiration = policy.GetMaxSectorExpirationExtension()
		}
		pc, err := nApi.StateMinerInitialPledgeCollateral(ctx, maddr, pci, types.EmptyTSK)
		if err != nil {
			return err
		}

		fmt.Printf("Estimated collateral: %s\n", types.FIL(pc))

		return nil
	},
}

var sectorsUpdateCmd = &cli.Command{
	Name:      "update-state",
	Usage:     "ADVANCED: manually update the state of a sector, this may aid in error recovery",
	ArgsUsage: "<sectorNum> <newState>",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "really-do-it",
			Usage: "pass this flag if you know what you are doing",
		},
	},
	Action: func(cctx *cli.Context) error {
		if !cctx.Bool("really-do-it") {
			return xerrors.Errorf("this is a command for advanced users, only use it if you are sure of what you are doing")
		}
		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
		if err != nil {
			return err
		}
		defer closer()
		ctx := lcli.ReqContext(cctx)
		if cctx.Args().Len() < 2 {
			return xerrors.Errorf("must pass sector number and new state")
		}

		id, err := strconv.ParseUint(cctx.Args().Get(0), 10, 64)
		if err != nil {
			return xerrors.Errorf("could not parse sector number: %w", err)
		}

		newState := cctx.Args().Get(1)
		if _, ok := sealing.ExistSectorStateList[sealing.SectorState(newState)]; !ok {
			fmt.Printf(" \"%s\" is not a valid state. Possible states for sectors are: \n", newState)
			for state := range sealing.ExistSectorStateList {
				fmt.Printf("%s\n", string(state))
			}
			return nil
		}

		return nodeApi.SectorsUpdate(ctx, abi.SectorNumber(id), api.SectorState(cctx.Args().Get(1)))
	},
}

func yesno(b bool) string {
	if b {
		return color.GreenString("YES")
	}
	return color.RedString("NO")
}