Started on user management routes

src/db/users.rs

@@ -1,5 +1,5 @@
 use diesel::{prelude::*, AsChangeset, Insertable, Queryable};
-use serde::Serialize;
+use serde::{Serialize, Deserialize};
 use uuid::Uuid;
 
 use crate::{
@@ -19,7 +19,7 @@ pub struct User
     pub admin: bool,
 }
 
-#[derive(Insertable, AsChangeset)]
+#[derive(Insertable, AsChangeset, Deserialize)]
 #[table_name = "users"]
 pub struct NewUser
 {
@@ -32,3 +32,23 @@ pub fn all(conn: &PgConnection) -> crate::Result<Vec<User>>
 {
     users.load::<User>(conn).map_err(|_| RBError::DBError)
 }
+
+pub fn find(conn: &PgConnection, user_id: Uuid) -> Option<User> {
+    users.find(user_id).first::<User>(conn).ok()
+}
+
+pub fn create(conn: &PgConnection, new_user: &NewUser) -> crate::Result<()> {
+    let count = diesel::insert_into(users).values(new_user).execute(conn).map_err(|_| RBError::DBError)?;
+
+    if count == 0 {
+        return Err(RBError::DuplicateUser);
+    }
+
+    Ok(())
+}
+
+pub fn delete(conn: &PgConnection, user_id: Uuid) -> crate::Result<()> {
+    diesel::delete(users.filter(id.eq(user_id))).execute(conn).map_err(|_| RBError::DBError)?;
+
+    Ok(())
+}