package tree

import (
	"crypto/sha256"

	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/tree"
	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
	"github.com/spf13/cobra"
)

var removeCmd = &cobra.Command{
	Use:   "remove",
	Short: "Remove node",
	Run:   remove,
	PersistentPreRun: func(cmd *cobra.Command, _ []string) {
		commonflags.Bind(cmd)
	},
}

func initRemoveCmd() {
	commonflags.Init(removeCmd)
	initCTID(removeCmd)

	ff := removeCmd.Flags()
	ff.Uint64(nodeIDFlagKey, 0, "Node ID.")

	_ = getSubtreeCmd.MarkFlagRequired(nodeIDFlagKey)

	_ = cobra.MarkFlagRequired(ff, commonflags.RPC)
}

func remove(cmd *cobra.Command, _ []string) {
	pk := key.GetOrGenerate(cmd)
	cidString, _ := cmd.Flags().GetString(commonflags.CIDFlag)

	var cnr cid.ID
	err := cnr.DecodeString(cidString)
	commonCmd.ExitOnErr(cmd, "decode container ID string: %w", err)

	ctx, cancel := contextWithTimeout(cmd)
	defer cancel()

	cli, err := _client()
	commonCmd.ExitOnErr(cmd, "failed to create client: %w", err)

	rawCID := make([]byte, sha256.Size)
	cnr.Encode(rawCID)

	tid, _ := cmd.Flags().GetString(treeIDFlagKey)

	nid, _ := cmd.Flags().GetUint64(nodeIDFlagKey)

	var bt []byte
	if t := common.ReadBearerToken(cmd, bearerFlagKey); t != nil {
		bt = t.Marshal()
	}
	req := &tree.RemoveRequest{
		Body: &tree.RemoveRequest_Body{
			ContainerId: rawCID,
			TreeId:      tid,
			NodeId:      nid,
			BearerToken: bt,
		},
	}

	commonCmd.ExitOnErr(cmd, "signing message: %w", tree.SignMessage(req, pk))

	_, err = cli.Remove(ctx, req)
	commonCmd.ExitOnErr(cmd, "failed to call remove: %w", err)
	common.PrintVerbose(cmd, "Successful remove invocation.")
}