From e96446388f9b061206647aaa946340a0f601ebc4 Mon Sep 17 00:00:00 2001
From: Georgios Konstantopoulos <me@gakonst.com>
Date: Sat, 30 May 2020 17:24:50 +0300
Subject: [PATCH] WIP: Add ContractFactory

---
 crates/ethers-contract/src/factory.rs | 43 +++++++++++++++++++++++++++
 crates/ethers-contract/src/lib.rs     |  3 ++
 2 files changed, 46 insertions(+)
 create mode 100644 crates/ethers-contract/src/factory.rs

diff --git a/crates/ethers-contract/src/factory.rs b/crates/ethers-contract/src/factory.rs
new file mode 100644
index 00000000..cc49e8fb
--- /dev/null
+++ b/crates/ethers-contract/src/factory.rs
@@ -0,0 +1,43 @@
+use crate::Contract;
+
+use ethers_providers::{networks::Network, JsonRpcClient};
+use ethers_signers::{Client, Signer};
+use ethers_types::{
+    abi::{Abi, Tokenize},
+    Bytes,
+};
+
+#[derive(Debug, Clone)]
+pub struct ContractFactory<'a, P, N, S> {
+    client: &'a Client<'a, P, N, S>,
+    abi: &'a Abi,
+    bytecode: &'a Bytes,
+}
+
+impl<'a, P: JsonRpcClient, N: Network, S: Signer> ContractFactory<'a, P, N, S> {
+    /// Instantiate a new contract factory
+    pub fn new(client: &'a Client<'a, P, N, S>, abi: &'a Abi, bytecode: &'a Bytes) -> Self {
+        Self {
+            client,
+            abi,
+            bytecode,
+        }
+    }
+
+    /// Deploys an instance of the contract with the provider constructor arguments
+    /// and returns the contract's instance
+    pub async fn deploy<T: Tokenize>(
+        constructor_args: T,
+    ) -> Result<Contract<'a, P, N, S>, P::Error> {
+        // 1. Encode the constructor args
+        //
+        // 2. Create the runtime bytecode by concatenating the bytecode with the constructor
+        // arguments (?)
+        //
+        // 3. Call `client.send_transaction()` to deploy
+        //
+        // 4. Get the address of the contract from the transaction receipt
+        //
+        // 5. Instantiate & return the contract object
+    }
+}
diff --git a/crates/ethers-contract/src/lib.rs b/crates/ethers-contract/src/lib.rs
index 99352d49..c1498a0e 100644
--- a/crates/ethers-contract/src/lib.rs
+++ b/crates/ethers-contract/src/lib.rs
@@ -7,6 +7,9 @@ pub use event::Event;
 mod call;
 pub use call::{ContractCall, ContractError};
 
+mod factory;
+pub use factory::ContractFactory;
+
 #[cfg(feature = "abigen")]
 pub use ethers_contract_abigen::Builder;