package control

import (
	"encoding/hex"

	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/util"
	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
	apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
	"github.com/spf13/cobra"
)

var getRuleCmd = &cobra.Command{
	Use:   "get-rule",
	Short: "Get local override",
	Long:  "Get local APE override of the node",
	Run:   getRule,
}

func getRule(cmd *cobra.Command, _ []string) {
	pk := key.Get(cmd)

	target := parseTarget(cmd)

	chainID, _ := cmd.Flags().GetString(chainIDFlag)
	hexEncoded, _ := cmd.Flags().GetBool(chainIDHexFlag)

	if hexEncoded {
		chainIDBytes, err := hex.DecodeString(chainID)
		commonCmd.ExitOnErr(cmd, "can't decode chain ID as hex: %w", err)
		chainID = string(chainIDBytes)
	}

	req := &control.GetChainLocalOverrideRequest{
		Body: &control.GetChainLocalOverrideRequest_Body{
			Target:  target,
			ChainId: []byte(chainID),
		},
	}

	signRequest(cmd, pk, req)

	cli := getClient(cmd, pk)

	var resp *control.GetChainLocalOverrideResponse
	var err error
	err = cli.ExecRaw(func(client *client.Client) error {
		resp, err = control.GetChainLocalOverride(client, req)
		return err
	})
	commonCmd.ExitOnErr(cmd, "rpc error: %w", err)

	verifyResponse(cmd, resp.GetSignature(), resp.GetBody())

	var chain apechain.Chain
	commonCmd.ExitOnErr(cmd, "decode error: %w", chain.DecodeBytes(resp.GetBody().GetChain()))
	util.PrintHumanReadableAPEChain(cmd, &chain)
}

func initControGetRuleCmd() {
	initControlFlags(getRuleCmd)

	ff := getRuleCmd.Flags()
	ff.String(targetNameFlag, "", targetNameDesc)
	ff.String(targetTypeFlag, "", targetTypeDesc)
	_ = getRuleCmd.MarkFlagRequired(targetTypeFlag)
	ff.String(chainIDFlag, "", "Chain id")
	ff.Bool(chainIDHexFlag, false, "Flag to parse chain ID as hex")
}