From c60dd433bc7266a990f0fd9b9d3ed67b7b22f740 Mon Sep 17 00:00:00 2001
From: sifnoc <sifnoc09@gmail.com>
Date: Fri, 15 Sep 2023 16:08:37 +0000
Subject: [PATCH] feat: create submit proof of ownership example

---
 backend/examples/submit_ownership.rs  | 81 +++++++++++++++++++++++++++
 backend/src/apis/address_ownership.rs |  4 ++
 backend/src/contracts/signer.rs       |  7 +--
 3 files changed, 87 insertions(+), 5 deletions(-)
 create mode 100644 backend/examples/submit_ownership.rs

diff --git a/backend/examples/submit_ownership.rs b/backend/examples/submit_ownership.rs
new file mode 100644
index 00000000..73707318
--- /dev/null
+++ b/backend/examples/submit_ownership.rs
@@ -0,0 +1,81 @@
+use std::sync::Arc;
+
+use ethers::{
+    abi::{encode, Token},
+    types::{Address, U256},
+    utils::keccak256,
+};
+
+use summa_backend::{
+    apis::address_ownership::AddressOwnership, contracts::generated::summa_contract::Summa,
+    tests::initialize_anvil,
+};
+
+// In this example, we will demonstrate how to submit ownership of address to the Summa contract.
+#[tokio::main]
+async fn main() {
+    // We have already demonstrated how to generate a CSV file containing the asset ownership proofs, `AddressOwnershipProof`.
+    // For more details on this, kindly refer to the "generate_signature" example.
+    //
+    // For the current demonstration, we'll use the same CSV file produced in `generate_signature` example.
+    let signature_csv_path = "src/apis/csv/signatures.csv";
+
+    // Initialize test environment
+    let (anvil, _, _, client, _) = initialize_anvil().await;
+
+    // Deploy contracts with null addresses for verifier contracts for this example
+    let summa_contract = Summa::deploy(Arc::clone(&client), (Address::zero(), Address::zero()))
+        .unwrap()
+        .send()
+        .await
+        .unwrap();
+
+    // Initialize `AddressOwnership` client
+    let mut address_ownership_client = AddressOwnership::new(
+        "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80",
+        anvil.chain_id(),
+        anvil.endpoint().as_str(),
+        summa_contract.address(),
+        signature_csv_path,
+    )
+    .unwrap();
+
+    // Get hashed addresses using the `keccak256` method.
+    let address_hashes = address_ownership_client
+        .get_ownership_proofs()
+        .iter()
+        .map(|x| keccak256(encode(&[Token::String(x.cex_address.clone())])))
+        .collect::<Vec<[u8; 32]>>();
+
+    // Dispatches the proof of address ownership.
+    // In the client, the `dispatch_proof_of_address_ownership` function sends a transaction to the Summa contract
+    address_ownership_client
+        .dispatch_proof_of_address_ownership()
+        .await
+        .unwrap();
+
+    // If the `addressHash` isn't found in the `addressOwnershipProofs` mapping of the Summa contract,
+    // it will return 0; otherwise, it will return a non-zero value.
+    //
+    // You can find unregistered address with null bytes as follows:
+    //
+    // let unregistered = summa_contract
+    //     .ownership_proof_by_address([0u8; 32])
+    //     .call()
+    //     .await
+    //     .unwrap();
+    //
+    // assert_eq!(unregistered, 0);
+
+    // Check if the addresses are registered on the Summa contract.
+    for address_hash in address_hashes.iter() {
+        let registered = summa_contract
+            .ownership_proof_by_address(*address_hash)
+            .call()
+            .await
+            .unwrap();
+
+        assert_ne!(registered, U256::from(0));
+    }
+    println!("Ownership proofs are submitted successfully!")
+}
diff --git a/backend/src/apis/address_ownership.rs b/backend/src/apis/address_ownership.rs
index 1eb6b34b..7b56348b 100644
--- a/backend/src/apis/address_ownership.rs
+++ b/backend/src/apis/address_ownership.rs
@@ -25,6 +25,10 @@ impl AddressOwnership {
         })
     }
 
+    pub fn get_ownership_proofs(&self) -> &Vec<AddressOwnershipProof> {
+        &self.address_ownership_proofs
+    }
+
     // This function dispatches the proof of address ownership. Before calling this function,
     // ensure externally that the provided `addresses` in `address_ownership_proof` are not already registered
     // on the Summa contract.
diff --git a/backend/src/contracts/signer.rs b/backend/src/contracts/signer.rs
index 7303c841..5b4f3ccc 100644
--- a/backend/src/contracts/signer.rs
+++ b/backend/src/contracts/signer.rs
@@ -1,13 +1,10 @@
 use crate::contracts::generated::summa_contract::Summa;
 use ethers::{
-    abi::{encode, Token},
     prelude::SignerMiddleware,
     providers::{Http, Provider},
-    signers::{LocalWallet, Signer, WalletError},
-    types::{Address, Signature},
-    utils::keccak256,
+    signers::{LocalWallet, Signer},
+    types::Address,
 };
-use futures::future::join_all;
 use serde_json::Value;
 use std::{
     error::Error, fs::File, io::BufReader, path::Path, str::FromStr, sync::Arc, time::Duration,