Rename from_proposal to from_original

Using bip77 nomenclature.

Author: arminsabouri

payjoin/src/core/receive/mod.rs

@@ -517,11 +517,11 @@ pub struct WantsOutputs {
 }
 
 impl WantsOutputs {
-    pub(crate) fn from_proposal(proposal: Original, owned_vouts: Vec<usize>) -> Self {
+    pub(crate) fn from_original(original: Original, owned_vouts: Vec<usize>) -> Self {
         Self {
-            original_psbt: proposal.psbt.clone(),
-            payjoin_psbt: proposal.psbt,
-            params: proposal.params,
+            original_psbt: original.psbt.clone(),
+            payjoin_psbt: original.psbt,
+            params: original.params,
             change_vout: owned_vouts[0],
             owned_vouts,
         }

payjoin/src/core/receive/v1/mod.rs

@@ -205,7 +205,7 @@ impl OutputsUnknown {
         // In case of there being multiple outputs paying to the receiver, we select the first one
         // as the `change_vout`, which we will default to when making single output changes in
         // future mutating typestates.
-        Ok(WantsOutputs::from_proposal(self.original, owned_vouts))
+        Ok(WantsOutputs::from_original(self.original, owned_vouts))
     }
 }
 
@@ -269,8 +269,8 @@ impl WantsOutputs {
     #[cfg_attr(not(feature = "v1"), allow(dead_code))]
     pub fn commit_outputs(self) -> WantsInputs { WantsInputs::from_wants_outputs(self.inner) }
 
-    pub(crate) fn from_proposal(proposal: Original, owned_vouts: Vec<usize>) -> Self {
-        Self { inner: crate::receive::WantsOutputs::from_proposal(proposal, owned_vouts) }
+    pub(crate) fn from_original(original: Original, owned_vouts: Vec<usize>) -> Self {
+        Self { inner: crate::receive::WantsOutputs::from_original(original, owned_vouts) }
     }
 }
 

payjoin/src/core/receive/v2/mod.rs

@@ -706,7 +706,7 @@ impl Receiver<OutputsUnknown> {
             },
         };
         let wants_outputs =
-            crate::receive::WantsOutputs::from_proposal(self.state.original, owned_vouts);
+            crate::receive::WantsOutputs::from_original(self.state.original, owned_vouts);
         MaybeFatalTransition::success(
             SessionEvent::WantsOutputs(wants_outputs.clone()),
             Receiver {