package main

import (
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/common/hexutil"
	"github.com/ethereum/go-ethereum/core/types"
)

// See github.com/ethereum/go-ethereum/internal/ethapi

// RPCMarshalHeader converts the given header to the RPC output .
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
	result := map[string]interface{}{
		"number":           (*hexutil.Big)(head.Number),
		"hash":             head.Hash(),
		"parentHash":       head.ParentHash,
		"nonce":            head.Nonce,
		"mixHash":          head.MixDigest,
		"sha3Uncles":       head.UncleHash,
		"logsBloom":        head.Bloom,
		"stateRoot":        head.Root,
		"miner":            head.Coinbase,
		"difficulty":       (*hexutil.Big)(head.Difficulty),
		"extraData":        hexutil.Bytes(head.Extra),
		"gasLimit":         hexutil.Uint64(head.GasLimit),
		"gasUsed":          hexutil.Uint64(head.GasUsed),
		"timestamp":        hexutil.Uint64(head.Time),
		"transactionsRoot": head.TxHash,
		"receiptsRoot":     head.ReceiptHash,
	}
	if head.BaseFee != nil {
		result["baseFeePerGas"] = (*hexutil.Big)(head.BaseFee)
	}
	if head.WithdrawalsHash != nil {
		result["withdrawalsRoot"] = head.WithdrawalsHash
	}
	if head.BlobGasUsed != nil {
		result["blobGasUsed"] = hexutil.Uint64(*head.BlobGasUsed)
	}
	if head.ExcessBlobGas != nil {
		result["excessBlobGas"] = hexutil.Uint64(*head.ExcessBlobGas)
	}
	if head.ParentBeaconRoot != nil {
		result["parentBeaconBlockRoot"] = head.ParentBeaconRoot
	}
	return result
}

// RPCMarshalBlock converts the given block to the RPC output.
// Since the genesis block contains no transactions, we don't have to worry about them.
func RPCMarshalBlock(block *types.Block) map[string]interface{} {
	fields := RPCMarshalHeader(block.Header())
	fields["size"] = hexutil.Uint64(block.Size())
	uncles := block.Uncles()
	uncleHashes := make([]common.Hash, len(uncles))
	for i, uncle := range uncles {
		uncleHashes[i] = uncle.Hash()
	}
	fields["uncles"] = uncleHashes
	if block.Header().WithdrawalsHash != nil {
		fields["withdrawals"] = block.Withdrawals()
	}
	return fields
}