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#ifndef LIGHTNING_COMMON_FUNDING_TX_H
#define LIGHTNING_COMMON_FUNDING_TX_H
#include "config.h"
#include <bitcoin/chainparams.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
#include <common/amount.h>
struct bitcoin_tx;
struct ext_key;
struct privkey;
struct pubkey;
struct utxo;
/**
* funding_tx: create a P2WSH funding transaction for a channel.
* @ctx: context to tal from.
* @chainparams: (in) the params for the resulting transaction.
* @outnum: (out) txout (0 or 1) which is the funding output.
* @utxomap: (in/out) tal_arr of UTXO pointers to spend (permuted to match)
* @funding: (in) satoshis to output.
* @local_fundingkey: (in) local key for 2of2 funding output.
* @remote_fundingkey: (in) remote key for 2of2 funding output.
* @change: (in) amount to send as change.
* @changekey: (in) key to send change to (only used if change_satoshis != 0).
* @bip32_base: (in) bip32 base for key derivation, or NULL.
*
* If bip32_base is supplied, scriptSig will be added for p2sh inputs: this
* means our signing code will fail, but txid will be correct. If NULL,
* the txid will be incorrect, by signing will succeed.
*
* This is done because all other txs have no scriptSig (being pure Segwit)
* so our signature code simply asserts there's no scriptsig (which would
* have to be removed for signing anyway). The funding transaction is
* a special case because of the P2SH inputs.
*/
struct bitcoin_tx *funding_tx(const tal_t *ctx,
const struct chainparams *chainparams,
u16 *outnum,
const struct utxo **utxomap,
struct amount_sat funding,
const struct pubkey *local_fundingkey,
const struct pubkey *remote_fundingkey,
struct amount_sat change,
const struct pubkey *changekey,
const struct ext_key *bip32_base);
#endif /* LIGHTNING_COMMON_FUNDING_TX_H */