5 files changed, 70 insertions, 26 deletions

diff --git a/src/db.rs b/src/db.rs
new file mode 100644
index 0000000..b74550b
--- /dev/null
+++ b/src/db.rs
@@ -0,0 +1,19 @@
+use crate::errors::AppError;
+
+use tokio_postgres::{Client, NoTls};
+
+/// Setup database connection. Get variable `DATABASE_URL` from the environment.
+pub async fn setup() -> Result<Client, AppError> {
+    let database_url = &crate::config::CONFIG.database_url;
+
+    let (client, connection) = tokio_postgres::connect(database_url, NoTls).await.unwrap();
+
+    // Spawn a new task to run the connection to the database
+    tokio::spawn(async move {
+        if let Err(e) = connection.await {
+            eprintln!("Database connection error: {}", e);
+        }
+    });
+
+    Ok(client)
+}
diff --git a/src/errors.rs b/src/errors.rs
index e0a70b5..fafe0b0 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -6,6 +6,7 @@ use axum::{
 use serde_json::json;
 
 /// All errors raised by the web app
+#[derive(Debug)]
 pub enum AppError {
     /// Database error
     Database,
diff --git a/src/graphql.rs b/src/graphql.rs
index 12b6db3..2843156 100644
--- a/src/graphql.rs
+++ b/src/graphql.rs
@@ -1,14 +1,11 @@
-use async_graphql::{
-    http::GraphiQLSource, Context, EmptyMutation, EmptySubscription, Object, Schema,
-};
-use async_graphql_axum::GraphQL;
-use axum::{
-    response::{self, IntoResponse},
-    routing::get,
-    Router,
-};
+use std::sync::Arc;
 
-struct Query;
+use async_graphql::{Context, EmptyMutation, EmptySubscription, Object, Schema};
+use async_graphql_axum::{GraphQLRequest, GraphQLResponse};
+
+// use crate::state::AppState;
+
+pub struct Query;
 
 #[Object]
 impl Query {
@@ -23,6 +20,19 @@ impl Query {
         #[graphql(desc = "First value")] a: i32,
         #[graphql(desc = "Second value")] b: Option<i32>,
     ) -> i32 {
+        // let state = ctx.data::<AppState>().unwrap();
+        // let client = &*state.client;
+        //
+        // // Perform a database query
+        // let rows = client
+        //     .query("SELECT owner FROM payment", &[])
+        //     .await
+        //     .unwrap();
+        // for row in rows {
+        //     let owner: String = row.get(0);
+        //     println!("{owner}");
+        // }
+
         match b {
             Some(x) => a + x,
             None => a,
@@ -30,16 +40,9 @@ impl Query {
     }
 }
 
-pub async fn graphiql() -> impl IntoResponse {
-    response::Html(
-        GraphiQLSource::build()
-            .endpoint("/")
-            .subscription_endpoint("/ws")
-            .finish(),
-    )
-}
-
-pub fn create_route() -> Router {
-    let schema = Schema::new(Query, EmptyMutation, EmptySubscription);
-    Router::new().route("/", get(graphiql).post_service(GraphQL::new(schema)))
+pub async fn graphql_handler(
+    schema: Arc<Schema<Query, EmptyMutation, EmptySubscription>>,
+    req: GraphQLRequest,
+) -> GraphQLResponse {
+    schema.execute(req.into_inner()).await.into()
 }
diff --git a/src/main.rs b/src/main.rs
index 8643d71..7ef7ee6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,14 +1,18 @@
 mod config;
+mod db;
 mod errors;
 mod graphql;
 mod logger;
 mod routes;
-use std::{net::SocketAddr, time::Duration};
+mod state;
+use std::{net::SocketAddr, sync::Arc, time::Duration};
 
 use crate::config::CONFIG;
+use async_graphql::{EmptyMutation, EmptySubscription, Schema};
 use axum::{
     http::{header, Request},
-    Router,
+    routing::post,
+    Extension, Router,
 };
 use tokio::net::TcpListener;
 use tower_http::{
@@ -21,10 +25,19 @@ use tracing::Span;
 /// Create the app: setup everything and returns a `Router`
 async fn create_app() -> Router {
     logger::setup();
-    // let _ = db::setup().await;
+    let dbclient = db::setup().await.unwrap();
+    let state = state::AppState {
+        client: Arc::new(dbclient),
+    };
 
+    let schema = Schema::build(graphql::Query, EmptyMutation, EmptySubscription)
+        .data(state.clone())
+        .finish();
     Router::new()
-        .nest("/graphql", graphql::create_route())
+        .route(
+            "/graphql",
+            post(move |req| graphql::graphql_handler(schema.clone().into(), req)),
+        )
         .fallback(crate::routes::page_404)
         // Mark the `Authorization` request header as sensitive so it doesn't
         // show in logs.
@@ -43,6 +56,7 @@ async fn create_app() -> Router {
                     },
                 ),
         )
+        .layer(Extension(state))
 }
 
 #[tokio::main(flavor = "current_thread")]
diff --git a/src/state.rs b/src/state.rs
new file mode 100644
index 0000000..d4719b9
--- /dev/null
+++ b/src/state.rs
@@ -0,0 +1,7 @@
+use std::sync::Arc;
+
+use tokio_postgres::Client;
+#[derive(Clone)]
+pub struct AppState {
+    pub client: Arc<Client>,
+}