use error::Result;

const SCHEMA: &'static str = "
    CREATE TABLE `tracks` (
        artist varchar(1024) NOT NULL,
        album varchar(1024) DEFAULT NULL,
        name varchar(1024) NOT NULL,
        timestamp integer(11) NOT NULL
    );
";

pub struct DB {
    conn: rusqlite::Connection,
}

impl DB {
    pub fn new<P: AsRef<std::path::Path>>(path: &P) -> Result<DB> {
        if !path.as_ref().exists() {
            Self::create(path)?;
        }

        return Ok(DB {
            conn: rusqlite::Connection::open(path)?,
        })
    }

    fn create<P: AsRef<std::path::Path>>(path: &P) -> Result<()> {
        println!(
            "Initializing database at {}",
            path.as_ref().to_string_lossy(),
        );

        if let Some(parent) = path.as_ref().parent() {
            std::fs::create_dir_all(parent)?;
            let conn = rusqlite::Connection::open(path)?;
            conn.execute(SCHEMA, rusqlite::NO_PARAMS)?;
            Ok(())
        }
        else {
            unimplemented!();
        }
    }
}