Initial commit

src/writer.rs

@@ -0,0 +1,24 @@
+use std::path::Path;
+
+use tokio_rusqlite::{Connection, rusqlite};
+
+
+pub struct Writer {
+    // Note that I don't need to wrap this in a mutex because
+    // tokio_rusqlite already serializes each request into a single executor
+    pub connection: Connection,
+}
+
+impl Writer {
+    pub async fn new(path: &Path) -> Result<Self, tokio_rusqlite::Error> {
+        let connection = Connection::open(path).await?;
+
+        connection.call(|conn| -> rusqlite::Result<()> {
+            conn.execute("create table if not exists users (id primary key, username not null, secret not null, unique(username))", [])?;
+            conn.execute("create table if not exists progress (user_id not null, document_id not null, progress not null, percentage not null, device not null, device_id, timestamp not null, unique(user_id, document_id), foreign key (user_id) references users(id))", [])?;
+            Ok(())
+        }).await?;
+
+        Ok(Self{connection})
+    }
+}