initial commit

apps/backend/.env.example

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+DATABASE_URL=postgres://postgres:postgres@localhost:5432/bacchus
+JWT_SECRET=<secret here>
+RUST_LOG=bacchus=debug,axum=info,tower_http=info

apps/backend/Cargo.toml

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+[package]
+name = "bacchus"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+axum = { version = "0.8.4", features = ["macros","json"] }
+tokio = { version = "1", features = ["full"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+sqlx = { version = "0.8.6", features = ["runtime-tokio-rustls","postgres","macros","uuid","chrono","migrate"] }
+uuid = { version = "1", features = ["serde","v4"] }
+chrono = { version = "0.4", features = ["serde"] }
+tower-http = { version = "0.6.6", features = ["cors","trace"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+anyhow = "1"

apps/backend/migrations/0001_init.sql

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+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+
+CREATE TABLE users (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  email TEXT NOT NULL UNIQUE,
+  display_name TEXT NOT NULL,
+  password_hash TEXT NOT NULL,
+  role TEXT NOT NULL DEFAULT 'user' CHECK (role IN ('user','admin')),
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE TABLE products (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  name TEXT NOT NULL,
+  price_cents INT NOT NULL CHECK (price_cents >= 0),
+  active BOOLEAN NOT NULL DEFAULT TRUE,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE TABLE ledger (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id UUID NOT NULL REFERENCES users(id),
+  amount_cents INT NOT NULL,
+  kind TEXT NOT NULL CHECK (kind IN ('topup','purchase','adjustment')),
+  ref_id UUID,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE TABLE orders (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id UUID NOT NULL REFERENCES users(id),
+  total_cents INT NOT NULL CHECK (total_cents >= 0),
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE TABLE order_items (
+  order_id UUID NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
+  product_id UUID NOT NULL REFERENCES products(id),
+  qty INT NOT NULL CHECK (qty > 0),
+  price_cents INT NOT NULL CHECK (price_cents >= 0),
+  PRIMARY KEY (order_id, product_id)
+);
+
+CREATE TABLE inventory_movements (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  product_id UUID NOT NULL REFERENCES products(id),
+  qty INT NOT NULL,
+  reason TEXT NOT NULL CHECK (reason IN ('purchase','consumption','correction')),
+  note TEXT,
+  created_by UUID REFERENCES users(id),
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE VIEW user_balances AS
+SELECT user_id, COALESCE(SUM(amount_cents),0) AS balance_cents
+FROM ledger GROUP BY user_id;
+
+CREATE VIEW product_stock AS
+SELECT p.id AS product_id, COALESCE(SUM(m.qty),0) AS stock
+FROM products p
+LEFT JOIN inventory_movements m ON m.product_id = p.id
+GROUP BY p.id;

apps/backend/src/main.rs

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+use axum::{
+    routing::get,
+    Router,
+};
+
+#[tokio::main]
+async fn main() {
+    // build our application with a single route
+    let app = Router::new().route("/", get(|| async { "Hello, World!" }));
+
+    // run our app with hyper, listening globally on port 3000
+    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
+    axum::serve(listener, app).await.unwrap();
+}