add lib crate

Cargo.toml

@@ -16,3 +16,10 @@ tower-http = { version = "0.4", features = ["add-extension", "trace"] }
 uuid = { version = "1.3", features = ["serde", "v4"] }
 serde = { version = "1", features = ["derive"] }
 sqlx = { version = "0.5.10", features = ["runtime-tokio-rustls", "any", "sqlite", "chrono", "time", "uuid"] }
+argon2 = "0.5"
+rand_core = { version = "0.6", features = ["getrandom"] }
+thiserror = "1.0.40"
+justerror = "1.1.0"
+password-hash = { version = "0.5.0", features = ["std", "getrandom"] }
+async-sqlx-session = { version = "0.4.0", default-features = false, features = ["sqlite", "rustls"] }
+axum-sessions = "0.5.0"

migrations/20230426221940_init.up.sql

@@ -7,7 +7,8 @@
 create table if not exists witches (
   id blob not null primary key,
   last_seen int,
-  name text,
+  username text not null unique,
+  displayname text,
   email text,
   secret blob not null, -- encrypted password? need to figure auth out
   created_at int not null default (unixepoch()),

src/lib.rs

@@ -0,0 +1,35 @@
+#[macro_use]
+extern crate justerror;
+
+use argon2::{
+    password_hash::{rand_core::OsRng, PasswordHash, PasswordHasher, PasswordVerifier, SaltString},
+    Argon2,
+};
+use uuid::Uuid;
+
+pub mod db;
+pub mod handlers;
+
+fn create_user(username: &str, password: &[u8]) -> Result<Uuid, CreateUserError> {
+    // Argon2 with default params (Argon2id v19)
+    let argon2 = Argon2::default();
+
+    let salt = SaltString::generate(&mut OsRng);
+    let password_hash = argon2
+        .hash_password(password, &salt)
+        .unwrap() // safe to unwrap, we know the salt is valid
+        .to_string();
+
+    todo!()
+}
+
+#[Error(desc = "Could not create user.")]
+#[non_exhaustive]
+pub struct CreateUserError(#[from] CreateUserErrorKind);
+
+#[Error]
+#[non_exhaustive]
+pub enum CreateUserErrorKind {
+    AlreadyExists,
+    Unknown,
+}

src/main.rs

@@ -2,9 +2,7 @@ use std::net::SocketAddr;
 
 use axum::{routing::get, Router};
 use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
-
-mod db;
-mod handlers;
+use witch_watch::{db, handlers};
 
 #[tokio::main]
 async fn main() {