From 3554f3a70bd703b7f0e77683617521a99a68e490 Mon Sep 17 00:00:00 2001
From: x <x@x>
Date: Tue, 8 Nov 2022 12:04:15 +0000
Subject: [PATCH] dao: construct signatures for tx

---
 example/dao2/src/main.rs | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/example/dao2/src/main.rs b/example/dao2/src/main.rs
index 853a3785e..034c10f0c 100644
--- a/example/dao2/src/main.rs
+++ b/example/dao2/src/main.rs
@@ -15,6 +15,7 @@ use darkfi_sdk::{
     crypto::{
         constants::MERKLE_DEPTH, pedersen::pedersen_commitment_u64, poseidon_hash, ContractId,
         Keypair, MerkleNode, MerkleTree, PublicKey, SecretKey, TokenId,
+        schnorr::SchnorrSecret,
     },
     tx::ContractCall,
 };
@@ -34,13 +35,14 @@ use std::{
 };
 
 use dao_contract::{DaoFunction, DaoMintParams};
+use money_contract::{MoneyFunction, MoneyTransferParams};
 
 use crate::{
     contract::{dao, example, money},
     note::EncryptedNote2,
     schema::WalletCache,
     tx::Transaction,
-    util::{sign, StateRegistry, ZkContractTable},
+    util::{StateRegistry, ZkContractTable},
 };
 
 mod contract;
@@ -414,7 +416,28 @@ async fn main() -> BoxResult<()> {
                 user_data,
             }],
         };
-        let (params, dao_mint_proofs) = builder.build(&zk_bins)?;
+        let (params, proofs) = builder.build(&zk_bins)?;
+
+        // Write the actual call data
+        let mut calldata = Vec::new();
+        // Selects which path executes in the contract.
+        calldata.write_u8(MoneyFunction::Transfer as u8)?;
+        params.encode(&mut calldata)?;
+
+        let calls = vec![ContractCall { contract_id: money_contract_id, data: calldata }];
+
+        let proofs = vec![proofs];
+
+        // We sign everything
+        let mut unsigned_tx_data = vec![];
+        calls.encode(&mut unsigned_tx_data)?;
+        proofs.encode(&mut unsigned_tx_data)?;
+        let signature = cashier_signature_secret.sign(&mut OsRng, &unsigned_tx_data[..]);
+
+        // Our tx has a single contract call which itself has a single input
+        let signatures = vec![vec![signature]];
+
+        Transaction { calls, proofs, signatures }
     };