// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package api

import (
	"encoding/json"

	"github.com/ethereum/go-ethereum/rpc/shared"
)

type NewAccountArgs struct {
	Passphrase string
}

func (args *NewAccountArgs) UnmarshalJSON(b []byte) (err error) {
	var obj []interface{}
	if err := json.Unmarshal(b, &obj); err != nil {
		return shared.NewDecodeParamError(err.Error())
	}

	if len(obj) < 1 {
		return shared.NewInsufficientParamsError(len(obj), 1)
	}

	if passhrase, ok := obj[0].(string); ok {
		args.Passphrase = passhrase
		return nil
	}

	return shared.NewInvalidTypeError("passhrase", "not a string")
}

type UnlockAccountArgs struct {
	Address    string
	Passphrase string
	Duration   int
}

func (args *UnlockAccountArgs) UnmarshalJSON(b []byte) (err error) {
	var obj []interface{}
	if err := json.Unmarshal(b, &obj); err != nil {
		return shared.NewDecodeParamError(err.Error())
	}

	args.Duration = 0

	if len(obj) < 1 {
		return shared.NewInsufficientParamsError(len(obj), 1)
	}

	if addrstr, ok := obj[0].(string); ok {
		args.Address = addrstr
	} else {
		return shared.NewInvalidTypeError("address", "not a string")
	}

	if len(obj) >= 2 && obj[1] != nil {
		if passphrasestr, ok := obj[1].(string); ok {
			args.Passphrase = passphrasestr
		} else {
			return shared.NewInvalidTypeError("passphrase", "not a string")
		}
	}

	if len(obj) >= 3 && obj[2] != nil {
		if duration, ok := obj[2].(float64); ok {
			args.Duration = int(duration)
		}
	}

	return nil
}