feat: proof agg service contract

Author: MarcosNicolau

batcher/aligned-sdk/src/eth/aligned_proof_agg_service.rs

@@ -0,0 +1,33 @@
+use std::sync::Arc;
+
+use ethers::prelude::*;
+
+use crate::core::errors::VerificationError;
+
+abigen!(
+    ProofAggregationServiceContract,
+    "abi/AlignedProofAggregationService.json"
+);
+
+pub type AlignedProofAggregationService = ProofAggregationServiceContract<Provider<Http>>;
+
+pub async fn aligned_proof_aggregation_service(
+    provider: Provider<Http>,
+    contract_address: H160,
+) -> Result<AlignedProofAggregationService, VerificationError> {
+    let client = Arc::new(provider);
+
+    // Verify that the contract has code at the given address
+    let code = client
+        .get_code(contract_address, None)
+        .await
+        .map_err(|e| VerificationError::EthereumProviderError(e.to_string()))?;
+    if code.is_empty() {
+        return Err(VerificationError::EthereumNotAContract(contract_address));
+    }
+
+    Ok(AlignedProofAggregationService::new(
+        contract_address,
+        client,
+    ))
+}