feat: add base support

Author: mickvandijke

src/services/avatar.rs

@@ -45,6 +45,7 @@ impl AvatarService {
                                     "mainnet" | "ethereum" => SupportedNetworks::Ethereum,
                                     "sepolia" => SupportedNetworks::Sepolia,
                                     "polygon" => SupportedNetworks::Polygon,
+                                    "base" => SupportedNetworks::Base,
                                     _ => { continue; }
                                 };
 
@@ -79,7 +80,8 @@ impl AvatarService {
             let provider = match network {
                 SupportedNetworks::Ethereum => rpc::ethereum::new(),
                 SupportedNetworks::Sepolia => rpc::sepolia::new(),
-                SupportedNetworks::Polygon => rpc::polygon::new()
+                SupportedNetworks::Polygon => rpc::polygon::new(),
+                SupportedNetworks::Base => rpc::base::new(),
             };
 
             let maybe_avatar_info = provider.get_avatar_info_with_metadata(address, self.cache.clone()).await.ok();
@@ -89,4 +91,8 @@ impl AvatarService {
 
         Ok(response)
     }
+
+    pub async fn listen_contract_events(&self) {
+
+    }
 }

src/services/rpc/base.rs

@@ -0,0 +1,20 @@
+use std::sync::LazyLock;
+
+use alloy::primitives::Address;
+
+use crate::services::rpc::Client;
+use crate::supported_networks::SupportedNetworks;
+
+static BASE_RPC_URL: LazyLock<String> = LazyLock::new(|| {
+    std::env::var("BASE_RPC_URL").expect("BASE_RPC_URL not set")
+});
+
+static BASE_AVATAR_SERVICE: LazyLock<String> = LazyLock::new(|| {
+    std::env::var("BASE_AVATAR_SERVICE").expect("BASE_AVATAR_SERVICE not set")
+});
+
+pub fn new() -> Client {
+    let contract_address = BASE_AVATAR_SERVICE.parse::<Address>().unwrap();
+    
+    Client::new(SupportedNetworks::Ethereum, &BASE_RPC_URL, contract_address).unwrap()
+}

src/services/rpc/mod.rs

@@ -14,6 +14,7 @@ use crate::supported_networks::SupportedNetworks;
 pub mod sepolia;
 pub mod polygon;
 pub mod ethereum;
+pub mod base;
 
 const IPFS_GATEWAYS: [&str; 4] = [
     "https://ipfs.io/ipfs/",

src/supported_networks.rs

@@ -5,7 +5,8 @@ use strum::{Display, EnumIter, IntoEnumIterator};
 pub enum SupportedNetworks {
     Ethereum,
     Sepolia,
-    Polygon
+    Polygon,
+    Base
 }
 
 impl SupportedNetworks {