[C#] Update auto-generated C# bindings
[ldk-java] / c_sharp / src / org / ldk / structs / CoinSelectionSource.cs
1
2 using org.ldk.impl;
3 using org.ldk.enums;
4 using org.ldk.util;
5 using System;
6
7 namespace org { namespace ldk { namespace structs {
8
9
10
11 /** An implementation of CoinSelectionSource */
12 public interface CoinSelectionSourceInterface {
13         /**Performs coin selection of a set of UTXOs, with at least 1 confirmation each, that are
14          * available to spend. Implementations are free to pick their coin selection algorithm of
15          * choice, as long as the following requirements are met:
16          * 
17          * 1. `must_spend` contains a set of [`Input`]s that must be included in the transaction
18          * throughout coin selection, but must not be returned as part of the result.
19          * 2. `must_pay_to` contains a set of [`TxOut`]s that must be included in the transaction
20          * throughout coin selection. In some cases, like when funding an anchor transaction, this
21          * set is empty. Implementations should ensure they handle this correctly on their end,
22          * e.g., Bitcoin Core's `fundrawtransaction` RPC requires at least one output to be
23          * provided, in which case a zero-value empty OP_RETURN output can be used instead.
24          * 3. Enough inputs must be selected/contributed for the resulting transaction (including the
25          * inputs and outputs noted above) to meet `target_feerate_sat_per_1000_weight`.
26          * 
27          * Implementations must take note that [`Input::satisfaction_weight`] only tracks the weight of
28          * the input's `script_sig` and `witness`. Some wallets, like Bitcoin Core's, may require
29          * providing the full input weight. Failing to do so may lead to underestimating fee bumps and
30          * delaying block inclusion.
31          * 
32          * The `claim_id` must map to the set of external UTXOs assigned to the claim, such that they
33          * can be re-used within new fee-bumped iterations of the original claiming transaction,
34          * ensuring that claims don't double spend each other. If a specific `claim_id` has never had a
35          * transaction associated with it, and all of the available UTXOs have already been assigned to
36          * other claims, implementations must be willing to double spend their UTXOs. The choice of
37          * which UTXOs to double spend is left to the implementation, but it must strive to keep the
38          * set of other claims being double spent to a minimum.
39          */
40         Result_CoinSelectionNoneZ select_confirmed_utxos(byte[] claim_id, Input[] must_spend, TxOut[] must_pay_to, int target_feerate_sat_per_1000_weight);
41         /**Signs and provides the full witness for all inputs within the transaction known to the
42          * trait (i.e., any provided via [`CoinSelectionSource::select_confirmed_utxos`]).
43          */
44         Result_TransactionNoneZ sign_tx(byte[] tx);
45 }
46
47 /**
48  * An abstraction over a bitcoin wallet that can perform coin selection over a set of UTXOs and can
49  * sign for them. The coin selection method aims to mimic Bitcoin Core's `fundrawtransaction` RPC,
50  * which most wallets should be able to satisfy. Otherwise, consider implementing [`WalletSource`],
51  * which can provide a default implementation of this trait when used with [`Wallet`].
52  */
53 public class CoinSelectionSource : CommonBase {
54         internal bindings.LDKCoinSelectionSource bindings_instance;
55         internal long instance_idx;
56
57         internal CoinSelectionSource(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
58         ~CoinSelectionSource() {
59                 if (ptr != 0) { bindings.CoinSelectionSource_free(ptr); }
60         }
61
62         private class LDKCoinSelectionSourceHolder { internal CoinSelectionSource held; }
63         private class LDKCoinSelectionSourceImpl : bindings.LDKCoinSelectionSource {
64                 internal LDKCoinSelectionSourceImpl(CoinSelectionSourceInterface arg, LDKCoinSelectionSourceHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
65                 private CoinSelectionSourceInterface arg;
66                 private LDKCoinSelectionSourceHolder impl_holder;
67                 public long select_confirmed_utxos(long _claim_id, long _must_spend, long _must_pay_to, int _target_feerate_sat_per_1000_weight) {
68                         byte[] _claim_id_conv = InternalUtils.decodeUint8Array(_claim_id);
69                         int _must_spend_conv_7_len = InternalUtils.getArrayLength(_must_spend);
70                         Input[] _must_spend_conv_7_arr = new Input[_must_spend_conv_7_len];
71                         for (int h = 0; h < _must_spend_conv_7_len; h++) {
72                                 long _must_spend_conv_7 = InternalUtils.getU64ArrayElem(_must_spend, h);
73                                 org.ldk.structs.Input _must_spend_conv_7_hu_conv = null; if (_must_spend_conv_7 < 0 || _must_spend_conv_7 > 4096) { _must_spend_conv_7_hu_conv = new org.ldk.structs.Input(null, _must_spend_conv_7); }
74                                 if (_must_spend_conv_7_hu_conv != null) { _must_spend_conv_7_hu_conv.ptrs_to.AddLast(this); };
75                                 _must_spend_conv_7_arr[h] = _must_spend_conv_7_hu_conv;
76                         }
77                         bindings.free_buffer(_must_spend);
78                         int _must_pay_to_conv_7_len = InternalUtils.getArrayLength(_must_pay_to);
79                         TxOut[] _must_pay_to_conv_7_arr = new TxOut[_must_pay_to_conv_7_len];
80                         for (int h = 0; h < _must_pay_to_conv_7_len; h++) {
81                                 long _must_pay_to_conv_7 = InternalUtils.getU64ArrayElem(_must_pay_to, h);
82                                 TxOut _must_pay_to_conv_7_conv = new TxOut(null, _must_pay_to_conv_7);
83                                 _must_pay_to_conv_7_arr[h] = _must_pay_to_conv_7_conv;
84                         }
85                         bindings.free_buffer(_must_pay_to);
86                         Result_CoinSelectionNoneZ ret = arg.select_confirmed_utxos(_claim_id_conv, _must_spend_conv_7_arr, _must_pay_to_conv_7_arr, _target_feerate_sat_per_1000_weight);
87                                 GC.KeepAlive(arg);
88                         long result = ret == null ? 0 : ret.clone_ptr();
89                         return result;
90                 }
91                 public long sign_tx(long _tx) {
92                         byte[] _tx_conv = InternalUtils.decodeUint8Array(_tx);
93                         Result_TransactionNoneZ ret = arg.sign_tx(_tx_conv);
94                                 GC.KeepAlive(arg);
95                         long result = ret == null ? 0 : ret.clone_ptr();
96                         return result;
97                 }
98         }
99
100         /** Creates a new instance of CoinSelectionSource from a given implementation */
101         public static CoinSelectionSource new_impl(CoinSelectionSourceInterface arg) {
102                 LDKCoinSelectionSourceHolder impl_holder = new LDKCoinSelectionSourceHolder();
103                 LDKCoinSelectionSourceImpl impl = new LDKCoinSelectionSourceImpl(arg, impl_holder);
104                 long[] ptr_idx = bindings.LDKCoinSelectionSource_new(impl);
105
106                 impl_holder.held = new CoinSelectionSource(null, ptr_idx[0]);
107                 impl_holder.held.instance_idx = ptr_idx[1];
108                 impl_holder.held.bindings_instance = impl;
109                 return impl_holder.held;
110         }
111
112         /**
113          * Performs coin selection of a set of UTXOs, with at least 1 confirmation each, that are
114          * available to spend. Implementations are free to pick their coin selection algorithm of
115          * choice, as long as the following requirements are met:
116          * 
117          * 1. `must_spend` contains a set of [`Input`]s that must be included in the transaction
118          * throughout coin selection, but must not be returned as part of the result.
119          * 2. `must_pay_to` contains a set of [`TxOut`]s that must be included in the transaction
120          * throughout coin selection. In some cases, like when funding an anchor transaction, this
121          * set is empty. Implementations should ensure they handle this correctly on their end,
122          * e.g., Bitcoin Core's `fundrawtransaction` RPC requires at least one output to be
123          * provided, in which case a zero-value empty OP_RETURN output can be used instead.
124          * 3. Enough inputs must be selected/contributed for the resulting transaction (including the
125          * inputs and outputs noted above) to meet `target_feerate_sat_per_1000_weight`.
126          * 
127          * Implementations must take note that [`Input::satisfaction_weight`] only tracks the weight of
128          * the input's `script_sig` and `witness`. Some wallets, like Bitcoin Core's, may require
129          * providing the full input weight. Failing to do so may lead to underestimating fee bumps and
130          * delaying block inclusion.
131          * 
132          * The `claim_id` must map to the set of external UTXOs assigned to the claim, such that they
133          * can be re-used within new fee-bumped iterations of the original claiming transaction,
134          * ensuring that claims don't double spend each other. If a specific `claim_id` has never had a
135          * transaction associated with it, and all of the available UTXOs have already been assigned to
136          * other claims, implementations must be willing to double spend their UTXOs. The choice of
137          * which UTXOs to double spend is left to the implementation, but it must strive to keep the
138          * set of other claims being double spent to a minimum.
139          */
140         public Result_CoinSelectionNoneZ select_confirmed_utxos(byte[] claim_id, Input[] must_spend, TxOut[] must_pay_to, int target_feerate_sat_per_1000_weight) {
141                 long ret = bindings.CoinSelectionSource_select_confirmed_utxos(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(claim_id, 32)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(must_spend, must_spend_conv_7 => must_spend_conv_7 == null ? 0 : must_spend_conv_7.ptr)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(must_pay_to, must_pay_to_conv_7 => must_pay_to_conv_7.ptr)), target_feerate_sat_per_1000_weight);
142                 GC.KeepAlive(this);
143                 GC.KeepAlive(claim_id);
144                 GC.KeepAlive(must_spend);
145                 GC.KeepAlive(must_pay_to);
146                 GC.KeepAlive(target_feerate_sat_per_1000_weight);
147                 if (ret >= 0 && ret <= 4096) { return null; }
148                 Result_CoinSelectionNoneZ ret_hu_conv = Result_CoinSelectionNoneZ.constr_from_ptr(ret);
149                 foreach (Input must_spend_conv_7 in must_spend) { if (this != null) { this.ptrs_to.AddLast(must_spend_conv_7); }; };
150                 return ret_hu_conv;
151         }
152
153         /**
154          * Signs and provides the full witness for all inputs within the transaction known to the
155          * trait (i.e., any provided via [`CoinSelectionSource::select_confirmed_utxos`]).
156          */
157         public Result_TransactionNoneZ sign_tx(byte[] tx) {
158                 long ret = bindings.CoinSelectionSource_sign_tx(this.ptr, InternalUtils.encodeUint8Array(tx));
159                 GC.KeepAlive(this);
160                 GC.KeepAlive(tx);
161                 if (ret >= 0 && ret <= 4096) { return null; }
162                 Result_TransactionNoneZ ret_hu_conv = Result_TransactionNoneZ.constr_from_ptr(ret);
163                 return ret_hu_conv;
164         }
165
166 }
167 } } }