// Copyright © 2019, 2020 Weald Technology Trading
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package cmd

import (
	"context"
	"os"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
)

var accountUnlockCmd = &cobra.Command{
	Use:   "unlock",
	Short: "Unlock a remote account",
	Long: `Unlock a remote account.  For example:

    ethdo account unlock --account="primary/my funds" --passphrase="secret"

In quiet mode this will return 0 if the account is unlocked, otherwise 1.`,
	Run: func(_ *cobra.Command, _ []string) {
		ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
		defer cancel()

		assert(viper.GetString("account") != "", "--account is required")

		_, account, err := walletAndAccountFromInput(ctx)
		errCheck(err, "Failed to obtain account")

		locker, isLocker := account.(e2wtypes.AccountLocker)
		assert(isLocker, "Account does not support unlocking")

		unlocked := false
		for _, passphrase := range getPassphrases() {
			ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
			err := locker.Unlock(ctx, []byte(passphrase))
			cancel()
			if err == nil {
				// Success.
				unlocked = true
				break
			}
		}

		assert(unlocked, "Failed to unlock account")
		os.Exit(_exitSuccess)
	},
}

func init() {
	accountCmd.AddCommand(accountUnlockCmd)
	accountFlags(accountUnlockCmd)
}