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// Copyright 2014 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 state

import (
    "encoding/json"
    "fmt"

    "github.com/dexon-foundation/dexon/common"
    "github.com/dexon-foundation/dexon/rlp"
    "github.com/dexon-foundation/dexon/trie"
)

type DumpAccount struct {
    Balance  string            `json:"balance"`
    Nonce    uint64            `json:"nonce"`
    Root     string            `json:"root"`
    CodeHash string            `json:"codeHash"`
    Code     string            `json:"code"`
    Storage  map[string]string `json:"storage"`
}

type Dump struct {
    Root     string                 `json:"root"`
    Accounts map[string]DumpAccount `json:"accounts"`
}

func (self *StateDB) RawDump() Dump {
    dump := Dump{
        Root:     fmt.Sprintf("%x", self.trie.Hash()),
        Accounts: make(map[string]DumpAccount),
    }

    it := trie.NewIterator(self.trie.NodeIterator(nil))
    for it.Next() {
        addr := self.trie.GetKey(it.Key)
        var data Account
        if err := rlp.DecodeBytes(it.Value, &data); err != nil {
            panic(err)
        }

        obj := newObject(nil, common.BytesToAddress(addr), data)
        account := DumpAccount{
            Balance:  data.Balance.String(),
            Nonce:    data.Nonce,
            Root:     common.Bytes2Hex(data.Root[:]),
            CodeHash: common.Bytes2Hex(data.CodeHash),
            Code:     common.Bytes2Hex(obj.Code(self.db)),
            Storage:  make(map[string]string),
        }
        storageIt := trie.NewIterator(obj.getTrie(self.db).NodeIterator(nil))
        for storageIt.Next() {
            account.Storage[common.Bytes2Hex(self.trie.GetKey(storageIt.Key))] = common.Bytes2Hex(storageIt.Value)
        }
        dump.Accounts[common.Bytes2Hex(addr)] = account
    }
    return dump
}

func (self *StateDB) Dump() []byte {
    json, err := json.MarshalIndent(self.RawDump(), "", "    ")
    if err != nil {
        fmt.Println("dump err", err)
    }

    return json
}