use log::info;
use rusqlite;
use std::time;

const DB_PATH: &str = "/usr/local/clinte/clinte.db";

#[derive(Debug)]
pub struct Post {
    pub id: u32,
    pub title: String,
    pub author: String,
    pub body: String,
}

#[derive(Debug)]
pub struct Conn {
    pub conn: rusqlite::Connection,
}

impl Conn {
    pub fn init(path: &str) -> rusqlite::Connection {
        let start = time::Instant::now();
        info!("Connecting to database");
        let conn = rusqlite::Connection::open_with_flags(
            path,
            rusqlite::OpenFlags::SQLITE_OPEN_FULL_MUTEX
                | rusqlite::OpenFlags::SQLITE_OPEN_CREATE
                | rusqlite::OpenFlags::SQLITE_OPEN_READ_WRITE,
        )
        .expect("Could not connect to DB");

        conn.execute(
            "CREATE TABLE IF NOT EXISTS posts (
            id INTEGER PRIMARY KEY NOT NULL,
            title TEXT NOT NULL,
            author TEXT NOT NULL,
            body TEXT NOT NULL
        )",
            rusqlite::NO_PARAMS,
        )
        .expect("Could not initialize DB");

        info!(
            "Database connection established in {}ms",
            start.elapsed().as_millis()
        );

        conn
    }

    pub fn new() -> Self {
        Conn {
            conn: Conn::init(DB_PATH),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_new() {
        let conn = Conn::init("/tmp/clinte-test.db");
        let mut stmt = conn.prepare("SELECT * FROM POSTS").unwrap();

        stmt.query_map(rusqlite::NO_PARAMS, |_| Ok(())).unwrap();
    }
}