Add bff

como_bff/Cargo.toml

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+[package]
+name = "como_bff"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+axum = "0.5.13"
+axum-extra = { version = "*", features = ["cookie", "cookie-private"] }
+axum-sessions = { version = "*" }
+tokio = { version = "1.20.1", features = ["full"] }
+uuid = { version = "1.1.2", features = ["v4", "fast-rng"] }
+sqlx = { version = "0.6", features = [
+  "runtime-tokio-rustls",
+  "postgres",
+  "migrate",
+  "uuid",
+  "offline",
+] }
+anyhow = "1.0.60"
+dotenv = "0.15.0"
+tracing = "0.1.36"
+tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }
+tower-http = { version = "0.3.4", features = ["full"] }

como_bff/README.md

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+# Como BFF
+
+```mermaid
+sequenceDiagram
+  client ->> bff: request /events
+  bff ->> bff: Validates cookie como.sid
+  bff ->> bff: Cookie does not exist
+  bff ->> client: 401
+  client ->> bff: Redirect /login
+  bff ->> auth: /login
+  auth ->> client: show webpage (give options)
+  client ->> auth: Submit credentials
+  auth ->> auth: Produce JWT
+  auth ->> bff: redirect with jwt/refreshtoken
+  bff ->> bff: wrap in cookie
+  bff ->> client: Redirect with cookie
+  client ->> bff: request /events
+  bff ->> events: forward request
+  events --> bff: returns events
+  bff --> client: return events
+```

como_bff/src/main.rs

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+use std::env::{self, current_dir};
+
+use async_graphql_axum::{GraphQLRequest, GraphQLResponse};
+use axum::{
+    extract::Extension,
+    http::{Method, StatusCode},
+    response::{Html, IntoResponse},
+    routing::{get, post},
+    Json, Router,
+};
+use axum_extra::extract::{cookie::Key, PrivateCookieJar};
+
+use async_graphql::{
+    http::{playground_source, GraphQLPlaygroundConfig},
+    EmptySubscription, Request, Response, Schema,
+};
+use axum_sessions::{
+    async_session::MemoryStore,
+    extractors::{ReadableSession, WritableSession},
+    SessionLayer,
+};
+use error::AppError;
+use graphql::CibusSchema;
+use serde::{Deserialize, Serialize};
+use serde_json::{json, Value};
+use services::users_service;
+use sqlx::PgPool;
+use tower_http::{cors::CorsLayer, trace::TraceLayer};
+use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
+
+use crate::graphql::{MutationRoot, QueryRoot};
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    // Environment
+    tracing::info!("Loading dotenv");
+    dotenv::dotenv()?;
+
+    // Logging
+    tracing_subscriber::registry()
+        .with(tracing_subscriber::EnvFilter::new(
+            std::env::var("RUST_LOG").unwrap_or_else(|_| {
+                "como_bin=debug,tower_http=debug,axum_extra=debug,hyper=info,mio=info,sqlx=info,async_graphql=debug"
+                    .into()
+            }),
+        ))
+        .with(tracing_subscriber::fmt::layer())
+        .init();
+
+    // Database
+    tracing::info!("Creating pool");
+    let db_url = env::var("DATABASE_URL")?;
+    let pool = PgPool::connect(&db_url).await?;
+
+    // Database Migrate
+    tracing::info!("Migrating db");
+    sqlx::migrate!("db/migrations").run(&pool).await?;
+
+    tracing::info!("current path: {}", current_dir()?.to_string_lossy());
+
+    // CORS
+    let cors = vec!["http://localhost:3000".parse().unwrap()];
+
+    // Webserver
+    tracing::info!("Building router");
+    let app = Router::new()
+        .layer(TraceLayer::new_for_http())
+        .layer(Extension(pool))
+        .layer(
+            CorsLayer::new()
+                .allow_origin(cors)
+                .allow_headers([axum::http::header::CONTENT_TYPE])
+                .allow_methods([Method::GET, Method::POST, Method::OPTIONS]),
+        );
+
+    tracing::info!("Starting webserver");
+    axum::Server::bind(&"0.0.0.0:3002".parse().unwrap())
+        .serve(app.into_make_service())
+        .await
+        .unwrap();
+
+    Ok(())
+}