From 64e0659e0eaa49427e6253e6f8c5bf3e697d0b8e Mon Sep 17 00:00:00 2001
From: Wigy <wigy_opensource_developer@yahoo.com>
Date: Tue, 28 Jul 2020 08:59:15 +0000
Subject: [PATCH] Add FFI calls required for the Dart tutorials

---
 morpheus-core-ffi/src/hydra/private.rs        |  2 --
 morpheus-core-ffi/src/hydra_signer.rs         | 16 +++++++++++
 morpheus-core-ffi/src/lib.rs                  |  3 +++
 morpheus-core-ffi/src/morpheus/public_kind.rs | 11 ++++++++
 morpheus-core-ffi/src/tx.rs                   | 27 ++++++++++++++++++-
 5 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 morpheus-core-ffi/src/hydra_signer.rs

diff --git a/morpheus-core-ffi/src/hydra/private.rs b/morpheus-core-ffi/src/hydra/private.rs
index 42fb096..9ad9674 100644
--- a/morpheus-core-ffi/src/hydra/private.rs
+++ b/morpheus-core-ffi/src/hydra/private.rs
@@ -1,7 +1,5 @@
 use super::*;
 
-use iop_morpheus_core::hydra::transaction::TransactionData;
-
 #[no_mangle]
 pub extern "C" fn delete_HydraPrivate(private: *mut Private) {
     delete(private)
diff --git a/morpheus-core-ffi/src/hydra_signer.rs b/morpheus-core-ffi/src/hydra_signer.rs
new file mode 100644
index 0000000..03ac95a
--- /dev/null
+++ b/morpheus-core-ffi/src/hydra_signer.rs
@@ -0,0 +1,16 @@
+use super::*;
+
+#[no_mangle]
+pub extern "C" fn SecpPrivateKey_sign_hydra_tx(
+    sk: *mut SecpPrivateKey, unsigned_tx: *const raw::c_char,
+) -> CPtrResult<raw::c_char> {
+    let sk = unsafe { convert::borrow_in(sk) };
+    let fun = || {
+        let tx_str = unsafe { convert::str_in(unsigned_tx)? };
+        let mut tx_data: TransactionData = serde_json::from_str(tx_str)?;
+        sk.sign_hydra_transaction(&mut tx_data)?;
+        let signed_tx_str = serde_json::to_string(&tx_data)?;
+        Ok(convert::string_out(signed_tx_str))
+    };
+    cresult(fun())
+}
diff --git a/morpheus-core-ffi/src/lib.rs b/morpheus-core-ffi/src/lib.rs
index 14e802c..506f740 100644
--- a/morpheus-core-ffi/src/lib.rs
+++ b/morpheus-core-ffi/src/lib.rs
@@ -1,4 +1,5 @@
 #![allow(clippy::not_unsafe_ptr_arg_deref)]
+#![allow(non_snake_case)]
 
 mod bip39;
 mod bip44;
@@ -6,6 +7,7 @@ mod crypto;
 mod did;
 mod ffi;
 mod hydra;
+mod hydra_signer;
 mod morpheus;
 mod multicipher;
 mod secp;
@@ -30,6 +32,7 @@ use iop_morpheus_core::{
         sign::*,
     },
     data::{claim::*, did::*, diddoc::*, present::*, validation::*},
+    hydra::{crypto::HydraSigner, transaction::TransactionData},
 };
 
 use crate::ffi::{convert, *};
diff --git a/morpheus-core-ffi/src/morpheus/public_kind.rs b/morpheus-core-ffi/src/morpheus/public_kind.rs
index 9e21569..a0d8d51 100644
--- a/morpheus-core-ffi/src/morpheus/public_kind.rs
+++ b/morpheus-core-ffi/src/morpheus/public_kind.rs
@@ -36,3 +36,14 @@ pub extern "C" fn MorpheusPublicKind_key(
     };
     cresult(fun())
 }
+
+#[no_mangle]
+pub extern "C" fn MorpheusPublicKind_did(kind: *const PublicKind, idx: i32) -> CPtrResult<Did> {
+    let kind = unsafe { convert::borrow_in(kind) };
+    let fun = || {
+        let pk = kind.key(idx)?;
+        let did = Did::from(pk.key_id());
+        Ok(convert::move_out(did))
+    };
+    cresult(fun())
+}
diff --git a/morpheus-core-ffi/src/tx.rs b/morpheus-core-ffi/src/tx.rs
index 75dbf09..52deafd 100644
--- a/morpheus-core-ffi/src/tx.rs
+++ b/morpheus-core-ffi/src/tx.rs
@@ -1,7 +1,9 @@
 use super::*;
 
 use iop_keyvault::Networks;
-use iop_morpheus_core::hydra::txtype::{hyd_core, Aip29Transaction, CommonTransactionFields};
+use iop_morpheus_core::hydra::txtype::{
+    hyd_core, morpheus, Aip29Transaction, CommonTransactionFields,
+};
 
 #[no_mangle]
 pub extern "C" fn TxBuilder_hydraTransferTx(
@@ -26,3 +28,26 @@ pub extern "C" fn TxBuilder_hydraTransferTx(
     };
     cresult(fun())
 }
+
+#[no_mangle]
+pub extern "C" fn TxBuilder_morpheusTx(
+    network: *const raw::c_char, sender_public_key: *const raw::c_char,
+    attempts: *const raw::c_char, nonce: u64,
+) -> CPtrResult<raw::c_char> {
+    let fun = || {
+        let network = unsafe { convert::str_in(network)? };
+        let attempts = unsafe { convert::str_in(attempts)? };
+        let sender_public_key = unsafe { convert::str_in(sender_public_key)? };
+        let op_attempts: Vec<morpheus::OperationAttempt> = serde_json::from_str(attempts)?;
+        let common_fields = CommonTransactionFields {
+            network: Networks::by_name(network)?,
+            sender_public_key: sender_public_key.to_owned(),
+            nonce,
+            ..Default::default()
+        };
+        let transfer_tx = morpheus::Transaction::new(common_fields, op_attempts);
+        let tx_str = serde_json::to_string(&transfer_tx.to_data())?;
+        Ok(convert::string_out(tx_str))
+    };
+    cresult(fun())
+}