main.rs

//from: https://github.com/GenezysDigitalAssets/clashofcars-node-service/blob/main/src/routes/get_player_data.ts
use actix_web::{
    get,
    web::{Data, Json},
    App, HttpServer, Result,
};
use serde::{Deserialize, Serialize};
use solana_account_decoder::parse_token::UiTokenAmount;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_program::pubkey::Pubkey;
use spl_associated_token_account::get_associated_token_address;

struct Settings {
    clash_token_pk: Pubkey,
}

#[derive(Deserialize, Serialize)]
struct GetPlayerData {
    player_wallet: Pubkey,
}

#[derive(Deserialize, Serialize)]
struct GetPlayerDataResponse {
    success: bool,
    balance: UiTokenAmount,
}

#[get("/getPlayerData")]
async fn get_player_data(
    body: Json<GetPlayerData>,
    settings: Data<Settings>,
    connection: Data<RpcClient>,
) -> Result<Json<GetPlayerDataResponse>> {
    let player_clash_wallet =
        get_associated_token_address(&body.player_wallet, &settings.clash_token_pk);
    let clash_balance = connection
        .get_token_account_balance(&player_clash_wallet)
        .await
        .unwrap();

    Ok(Json(GetPlayerDataResponse {
        success: true,
        balance: clash_balance,
    }))
}

#[cfg(test)]
mod tests {
    use super::*;
    use actix_web::{
        http::{self, header::ContentType},
        test,
    };

    #[actix_web::test]
    async fn test_get_player_data() {
        let app = test::init_service(
            App::new()
                .app_data(Data::new(Settings {
                    clash_token_pk: "ENUPKrN5RFzCU5nfnLF6GxJ6deSRtM6whmi3s5yM2ftB"
                        .try_into()
                        .unwrap(),
                }))
                .app_data(Data::new(RpcClient::new(
                    "https://api.devnet.solana.com".to_string(),
                )))
                .service(get_player_data),
        )
        .await;

        let req = test::TestRequest::default()
            .insert_header(ContentType::json())
            .set_json(GetPlayerData {
                player_wallet: Pubkey::new_unique(),
            })
            .uri("/getPlayerData")
            .to_request();

        let resp = test::call_service(&app, req).await;
        assert_eq!(resp.status(), http::StatusCode::OK);
    }
}