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})
    }
}