Adding EVM example readme.

Tweaking the binding to address the recent change.

Author: dssei

Diff for: contracts/sei-tester/Cargo.toml

@@ -47,7 +47,7 @@ cw2 = "0.13.2"
 schemars = "0.8.8"
 serde = { version = "1.0.137", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
-base64 = { version = "0.13.0" }
+base64 = { version = "0.21.7" }
 thiserror = { version = "1.0.31" }
 protobuf = { version = "3.2.0", features = ["with-bytes"] }
 

Diff for: contracts/sei-tester/README.md

@@ -12,10 +12,160 @@ sei-chain integration in your smart contracts.
 First we need deploy an EVM contract on the Sei chain. Let's use a simple counter contract and
 foundry tooling to deploy it.
 
-Install the [foundry tooling](https://book.getfoundry.sh/) by following this [guide](https://book.getfoundry.sh/getting-started/installation.html).
+Install the [foundry tooling](https://book.getfoundry.sh/) by following this [installation guide](https://book.getfoundry.sh/getting-started/installation.html).
 
-```shell
+
+Create a new project following the [Creating New Project Guide](https://book.getfoundry.sh/projects/creating-a-new-project).
+
+Once project is created, tweak the contract code to the following, by adding a `getCounter` function:
 
 ```solidity
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+contract Counter {
+    uint256 public number;
+
+    function setNumber(uint256 newNumber) public {
+        number = newNumber;
+    }
+
+    function increment() public {
+        number++;
+    }
+
+    function getCount() public view returns (uint256) {
+        return number;
+    }
+}
+
+```
+
+And the test to the following:
+```solidity
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+import {Test, console} from "forge-std/Test.sol";
+import {Counter} from "../src/Counter.sol";
+
+contract CounterTest is Test {
+    Counter public counter;
+
+    function setUp() public {
+        counter = new Counter();
+        counter.setNumber(0);
+    }
+
+    function test_Increment() public {
+        counter.increment();
+        assertEq(counter.number(), 1);
+    }
 
+    function testFuzz_SetNumber(uint256 x) public {
+        counter.setNumber(x);
+        assertEq(counter.number(), x);
+    }
+
+    function test_GetCount() public {
+        uint256 initialCount = counter.getCount();
+        counter.increment();
+        assertEq(counter.getCount(), initialCount + 1);
+    }
+}
+```
+Run the tests with the following command:
+```shell
+forge test
+```
+If tests pass, deploy the contract to the Sei chain with the following command:
+```shell
+forge create --rpc-url $SEI_NODE_URI --mnemonic $MNEMONIC src/Counter.sol:Counter
+```
+Where `$SEI_NODE_URI` is the URI of the Sei node and `$MNEMONIC` is the mnemonic of the account that will deploy the 
+contract.
+If you run local Sei node the address will  be `http://localhost:8545`.
+If deployment is successful, you will get the EVM contract address.
+```shell
+[⠒] Compiling...
+No files changed, compilation skipped
+Deployer: 0xAddress
+Deployed to: 0xContractAddress
+Transaction hash: 0xTransactionHash
+
+```
+Let's use the `cast` command to query the contract:
+```shell
+cast call $0X_CONTRACT_ADDRESS "getCount()(uint256)"
+```
+Where `$0X_CONTRACT_ADDRESS` is the address of the deployed contract that you take from `Deployed to` row in the output
+of the previous command.
+The command should return `0` as the initial value of the counter.
+
+Now we can use the `cast` command to call the `increment` function:
+```shell
+cast send $0X_CONTRACT_ADDRESS "increment()" --mnemonic $MNEMONIC
+```
+If command is successful, you will get the transaction hash and other info back.
+
+Now let's call the `getCount` function again and this case it should return `1`.
+
+If that works, we can now deploy the CosmWasm contract that will call the EVM contract.
+
+Follow the instructions in [this README](../../README.md)  to deploy the test contract.
+
+Once the contract is deployed, we can query EVM contract from the CosmWasm contract.
+Please note the contract address of the CosmWasm contract or export it as `$COSMWASM_CONTRACT_ADDRESS`.
+Before we do that, we need to get the correct inputs.
+To generate inputs, we can use the `seid` command line tool.
+
+First we need to get the ABI of the EVM contract. It was generated by the foundry tooling and is usually located in the 
+`out` folder. E.g. at path `out/Counter.sol/Counter.json`.
+
+For our example the ABI looks like this:
+
+```json
+[{"type":"function","name":"getCount","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"increment","inputs":[],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"number","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"setNumber","inputs":[{"name":"newNumber","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"}]
+```
+For convenience, we can save the ABI to a file, e.g. `abi.json`.
+
+Now let's generate the inputs for the `seid` command line tool.
+
+```shell
+seid q evm payload abi.json increment
+```
+That could produce result like `d09de08a`. This is hex encoded function input.
+For our example though we need bash64 encoded bytes. So let's convert it:
+```shell
+echo -n 'd09de08a' | xxd -r -p | base64
+```
+This should produce result like `0J3gig==`
+
+```shell
+seid tx wasm execute  $COSMWASM_CONTRACT_ADDRESS '{"call_evm": {"value": "0", "to": "$0X_CONTRACT_ADDRESS", "data": "0J3gig==" }}' --from=admin --broadcast-mode=block --fees=200000usei --gas=3000000
+```
+This command will call the `increment` function of the EVM contract from the CosmWasm contract.
+So now the counter should be `2`. Let's verify with the `cast` command first:
+```shell
+cast call $0X_CONTRACT_ADDRESS "getCount()(uint256)"
+```
+And now also with the `seid` command:
+```shell
+seid q evm payload out/abi.json getCount
+```
+```shell
+echo -n 'a87d942c' | xxd -r -p | base64
+```
+```shell
+seid q wasm contract-state smart $COSMWASM_CONTRACT_ADDRESS '{"static_call": {"from": "$SEI_ACCOUNT_ADDRESS", "to": "$0X_CONTRACT_ADDRESS", "data": "qH2ULA==" }}' 
+```
+The above command should return output like this:
+```shell
+data:
+  encoded_data: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAI=
+```
+Let's decode it:
+```shell
+echo 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAI=' | base64 -D | od -t u1 -An -j 31
 ```
+This should return `2` as well.

Diff for: contracts/sei-tester/src/contract.rs

@@ -1,5 +1,6 @@
+use base64::{Engine as _, engine::{general_purpose}};
 use cosmwasm_std::to_json_binary;
-// #[cfg(not(feature = "library"))]
+#[cfg(not(feature = "library"))]
 use cosmwasm_std::{
     coin, entry_point, Attribute, BankMsg, Binary, Coin, Decimal, Deps, DepsMut, Env, MessageInfo,
     Order as IteratorOrder, Reply, Response, StdError, StdResult, SubMsg, SubMsgResponse, Uint128,
@@ -12,14 +13,7 @@ use crate::{
     types::{OrderData, PositionEffect},
 };
 use protobuf::Message;
-use sei_cosmwasm::{
-    BulkOrderPlacementsResponse, Cancellation, DenomAuthorityMetadataResponse, DenomUnit,
-    DenomsFromCreatorResponse, DepositInfo, DexTwapsResponse, EpochResponse, EvmAddressResponse,
-    ExchangeRatesResponse, GetLatestPriceResponse, GetOrderByIdResponse, GetOrdersResponse,
-    Metadata, MsgPlaceOrdersResponse, OracleTwapsResponse, Order, OrderSimulationResponse,
-    OrderType, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuerier, SeiQueryWrapper,
-    SettlementEntry, SudoMsg,
-};
+use sei_cosmwasm::{BulkOrderPlacementsResponse, Cancellation, DenomAuthorityMetadataResponse, DenomUnit, DenomsFromCreatorResponse, DepositInfo, DexTwapsResponse, EpochResponse, EvmAddressResponse, ExchangeRatesResponse, GetLatestPriceResponse, GetOrderByIdResponse, GetOrdersResponse, Metadata, MsgPlaceOrdersResponse, OracleTwapsResponse, Order, OrderSimulationResponse, OrderType, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuerier, SeiQueryWrapper, SettlementEntry, SudoMsg, StaticCallResponse};
 
 const PLACE_ORDER_REPLY_ID: u64 = 1;
 // version info for migration info
@@ -338,7 +332,7 @@ pub fn process_bulk_order_placements(
         Ok(val) => val,
         Err(error) => panic!("Problem parsing response: {:?}", error),
     };
-    let base64_json_str = base64::encode(serialized_json);
+    let base64_json_str = general_purpose::STANDARD.encode(serialized_json);
     let binary = match Binary::from_base64(base64_json_str.as_ref()) {
         Ok(val) => val,
         Err(error) => panic!("Problem converting binary for order request: {:?}", error),
@@ -575,10 +569,10 @@ pub fn query_static_call(
     from: String,
     to: String,
     data: String,
-) -> StdResult<String> {
+) -> StdResult<StaticCallResponse> {
     let valid_from_addr = deps.api.addr_validate(&from)?;
     let querier = SeiQuerier::new(&deps.querier);
-    let res: String = querier.static_call(valid_from_addr.to_string(), to, data)?;
+    let res: StaticCallResponse = querier.static_call(valid_from_addr.to_string(), to, data)?;
 
     Ok(res)
 }

Diff for: contracts/sei-tester/tests/sei_tester_integration_tests.rs

@@ -1,3 +1,4 @@
+use base64::{Engine as _, engine::{general_purpose}};
 use cosmwasm_std::{
     coin, from_json,
     testing::{MockApi, MockStorage},
@@ -10,7 +11,7 @@ use cw_multi_test::{
     StakeKeeper, WasmKeeper,
 };
 
-use sei_cosmwasm::{Cancellation, DenomOracleExchangeRatePair, DexPair, DexTwap, DexTwapsResponse, EpochResponse, EvmAddressResponse, ExchangeRatesResponse, GetOrderByIdResponse, GetOrdersResponse, OracleExchangeRate, OracleTwapsResponse, Order, OrderSimulationResponse, OrderStatus, OrderType, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuery, SeiQueryWrapper, SeiRoute};
+use sei_cosmwasm::{Cancellation, DenomOracleExchangeRatePair, DexPair, DexTwap, DexTwapsResponse, EpochResponse, EvmAddressResponse, ExchangeRatesResponse, GetOrderByIdResponse, GetOrdersResponse, OracleExchangeRate, OracleTwapsResponse, Order, OrderSimulationResponse, OrderStatus, OrderType, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuery, SeiQueryWrapper, SeiRoute, StaticCallResponse};
 use sei_integration_tests::{
     helper::{get_balance, mock_app},
     module::{SeiModule, EVM_ADDRESS, SEI_ADDRESS},
@@ -935,19 +936,21 @@ fn test_static_call_query() {
     let mut app = mock_app(init_default_balances, vec![]);
     let sei_tester_addr = setup_test(&mut app);
 
-    let res: String = app
+    let res: StaticCallResponse = app
         .wrap()
         .query_wasm_smart(
             sei_tester_addr.clone(),
             &QueryMsg::StaticCall {
                 from: SEI_ADDRESS.to_string(),
                 to: EVM_ADDRESS.to_string(),
-                data: "qH2ULA==".to_string(),
+                data: "".to_string(),
             },
         )
         .unwrap();
 
-    let expected_res = "static call response".to_string();
+    let expected_res = StaticCallResponse {
+        encoded_data: general_purpose::STANDARD.encode(b"static call response")
+    };
     assert_eq!(res, expected_res);
 
 }

Diff for: packages/sei-cosmwasm/src/querier.rs

@@ -7,10 +7,10 @@ use crate::query::{
     Erc721NameSymbolResponse, Erc721OwnerResponse, Erc721UriResponse, ErcPayloadResponse,
     EvmAddressResponse, ExchangeRatesResponse, GetLatestPriceResponse, GetOrderByIdResponse,
     GetOrdersResponse, OracleTwapsResponse, OrderSimulationResponse, SeiAddressResponse, SeiQuery,
-    SeiQueryWrapper,
+    SeiQueryWrapper,StaticCallResponse
 };
 use crate::route::SeiRoute;
-use crate::Order;
+use crate::{Order};
 
 /// This is a helper wrapper to easily use our custom queries
 pub struct SeiQuerier<'a> {
@@ -196,7 +196,7 @@ impl<'a> SeiQuerier<'a> {
         from: String,
         to: String,
         data: String,
-    ) -> StdResult<String> {
+    ) -> StdResult<StaticCallResponse> {
         let request = SeiQueryWrapper {
             route: SeiRoute::Evm,
             query_data: SeiQuery::StaticCall { from, to, data },

Diff for: packages/sei-cosmwasm/src/query.rs

@@ -272,7 +272,7 @@ pub struct DenomsFromCreatorResponse {
 pub struct StaticCallResponse {
     /// The result of the static call to the EVM contract. It's represented as a base64 encoded
     /// string.
-    pub data: String, // base64
+    pub encoded_data: String, // base64
 }
 
 /// `ErcPayloadResponse` is a struct that represents a response containing the encoded payload for

Diff for: packages/sei-integration-tests/Cargo.toml

@@ -14,4 +14,6 @@ cosmwasm-std = "1.0.0"
 cw20-base = "0.13.4"
 schemars = "0.8.8"
 serde = { version = "1.0.137", default-features = false, features = ["derive"] }
-serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
+serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
+[dependencies]
+base64 = "0.21.7"

Diff for: packages/sei-integration-tests/src/module.rs

@@ -5,19 +5,14 @@ use cosmwasm_std::{
 };
 use cw_multi_test::{AppResponse, BankSudo, CosmosRouter, Module, SudoMsg};
 use schemars::JsonSchema;
-use sei_cosmwasm::{
-    Cancellation, DenomOracleExchangeRatePair, DexPair, DexTwap, DexTwapsResponse, Epoch,
-    EpochResponse, EvmAddressResponse, ExchangeRatesResponse, GetOrderByIdResponse,
-    GetOrdersResponse, OracleTwap, OracleTwapsResponse, Order, OrderResponse,
-    OrderSimulationResponse, OrderStatus, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuery,
-    SeiQueryWrapper, SudoMsg as SeiSudoMsg,
-};
+use sei_cosmwasm::{Cancellation, DenomOracleExchangeRatePair, DexPair, DexTwap, DexTwapsResponse, Epoch, EpochResponse, EvmAddressResponse, ExchangeRatesResponse, GetOrderByIdResponse, GetOrdersResponse, OracleTwap, OracleTwapsResponse, Order, OrderResponse, OrderSimulationResponse, OrderStatus, PositionDirection, SeiAddressResponse, SeiMsg, SeiQuery, SeiQueryWrapper, StaticCallResponse, SudoMsg as SeiSudoMsg};
 use serde::de::DeserializeOwned;
 use std::{
     collections::HashMap,
     fmt::Debug,
     ops::{Add, Div, Mul, Sub},
 };
+use base64::{Engine as _, engine::{general_purpose}};
 
 pub struct SeiModule {
     epoch: Epoch,
@@ -192,7 +187,7 @@ impl Module for SeiModule {
                 );
             }
             SeiQuery::StaticCall { .. } => {
-                Ok(to_json_binary("static call response")?)
+                Ok(to_json_binary(&get_static_call_response())?)
             }
             SeiQuery::GetEvmAddress { sei_address } => {
                 Ok(to_json_binary(&get_evm_address(sei_address))?)
@@ -658,6 +653,12 @@ fn get_epoch(epoch: Epoch) -> EpochResponse {
     EpochResponse { epoch: epoch }
 }
 
+fn get_static_call_response() -> StaticCallResponse {
+    StaticCallResponse {
+        encoded_data: general_purpose::STANDARD.encode(b"static call response")
+    }
+}
+
 fn get_evm_address(sei_address: String) -> EvmAddressResponse {
     let (evm_address, associated) = match sei_address.as_str() {
         SEI_ADDRESS => (EVM_ADDRESS.to_string(), true),