initial project structure

Cargo.toml

@@ -4,7 +4,9 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-serde = { version = "1.0.217", features = ["derive"] }
-serde_json = "1.0.138"
-tokio = { version = "1.43.0", features = ["full"] }
-tokio-postgres = { version = "0.7.13", features = ["with-uuid-1"] }
+clap = { version = "4.5.29", features = ["derive"] }
+prost = "0.13.5"
+sqlx = { version = "0.8.3", features = ["postgres", "runtime-tokio"] }
+tokio = { version = "1.43.0", features = ["full", "macros"] }
+tonic = "0.12.3"
+tonic-build = "0.12.3"

src/client/mod.rs

@@ -0,0 +1,21 @@
+use multieko2::accounting_client::AccountingClient;
+use multieko2::{CreateAccountRequest, GetAccountRequest};
+
+pub async fn run_client(server_url: String) -> Result<(), Box<dyn std::error::Error>> {
+    let mut client = AccountingClient::connect(server_url).await?;
+
+    // Create an account
+    let create_response = client
+        .create_account(CreateAccountRequest { name: "John Doe".into() })
+        .await?;
+    println!("Created account with ID: {}", create_response.into_inner().id);
+
+    // Get an account
+    let get_response = client
+        .get_account(GetAccountRequest { id: "1".into() })
+        .await?;
+    let account = get_response.into_inner();
+    println!("Account ID: {}, Name: {}", account.id, account.name);
+
+    Ok(())
+}

src/main.rs

@@ -1,3 +1,35 @@
-fn main() {
-    println!("Hello, world!");
+use clap::{Parser, Subcommand};
+use sqlx::PgPool;
+
+#[derive(Parser)]
+struct Cli {
+    #[clap(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    Standalone,
+    Server,
+    Client { server_url: String },
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let args = Cli::parse();
+
+    match args.command {
+        Commands::Standalone => {
+            standalone::run().await?;
+        }
+        Commands::Server => {
+            let db_pool = PgPool::connect("postgres://user:password@localhost/multieko2").await?;
+            server::run_server(db_pool).await?;
+        }
+        Commands::Client { server_url } => {
+            client::run_client(server_url).await?;
+        }
+    }
+
+    Ok(())
 }

src/server/mod.rs

@@ -0,0 +1,52 @@
+use tonic::{Request, Response, Status};
+use sqlx::PgPool;
+use multieko2::accounting_server::{Accounting, AccountingServer};
+use multieko2::{CreateAccountRequest, CreateAccountResponse, GetAccountRequest, GetAccountResponse};
+
+pub struct MyAccountingService {
+    db_pool: PgPool,
+}
+
+#[tonic::async_trait]
+impl Accounting for MyAccountingService {
+    async fn create_account(
+        &self,
+        request: Request<CreateAccountRequest>,
+    ) -> Result<Response<CreateAccountResponse>, Status> {
+        let name = request.into_inner().name;
+        let account = sqlx::query!("INSERT INTO accounts (name) VALUES ($1) RETURNING id", name)
+            .fetch_one(&self.db_pool)
+            .await
+            .map_err(|e| Status::internal(e.to_string()))?;
+
+        Ok(Response::new(CreateAccountResponse { id: account.id.to_string() }))
+    }
+
+    async fn get_account(
+        &self,
+        request: Request<GetAccountRequest>,
+    ) -> Result<Response<GetAccountResponse>, Status> {
+        let id = request.into_inner().id;
+        let account = sqlx::query!("SELECT id, name FROM accounts WHERE id = $1", id)
+            .fetch_one(&self.db_pool)
+            .await
+            .map_err(|e| Status::internal(e.to_string()))?;
+
+        Ok(Response::new(GetAccountResponse {
+            id: account.id.to_string(),
+            name: account.name,
+        }))
+    }
+}
+
+pub async fn run_server(db_pool: PgPool) -> Result<(), Box<dyn std::error::Error>> {
+    let addr = "[::1]:50051".parse()?;
+    let service = MyAccountingService { db_pool };
+
+    tonic::transport::Server::builder()
+        .add_service(AccountingServer::new(service))
+        .serve(addr)
+        .await?;
+
+    Ok(())
+}

src/standalone/mod.rs

@@ -0,0 +1,21 @@
+use crate::server::run_server;
+use crate::client::run_client;
+use sqlx::PgPool;
+
+pub async fn run() -> Result<(), Box<dyn std::error::Error>> {
+    // Set up local PostgreSQL connection
+    let db_pool = PgPool::connect("postgres://user:password@localhost/multieko2").await?;
+
+    // Run the server in the background
+    let server_handle = tokio::spawn(async move {
+        run_server(db_pool).await.unwrap();
+    });
+
+    // Run the client
+    run_client("http://[::1]:50051".to_string()).await?;
+
+    // Wait for the server to finish (it won't, but this keeps the app running)
+    server_handle.await?;
+
+    Ok(())
+}