use std::error::Error;

use crate::DBPool;

pub type GResult = Result<(), Box<dyn Error>>;
const DATAVERSION: &str = "0.0.10";

fn create_database(pool: DBPool) -> GResult {
    let conn = pool.get()?;

    println!("Createing the database");

    println!("Createing new meta table. With version {}", DATAVERSION);
    println!("Drop old meta table");
    conn.execute("DROP TABLE IF EXISTS meta;", ())?;
    // Create the database
    println!("create new meta table");
    conn.execute(
        "CREATE TABLE meta (
            id      INTEGER PRIMARY KEY,
            version TEXT,
            configured Boolean
        );",
        (),
    )?;
    println!("insert data");
    conn.execute(
        "INSERT INTO meta (version, configured) VALUES (?1, ?2);",
        (&DATAVERSION, false),
    )?;

    println!(
        "Createing new configuration table. With version {}",
        DATAVERSION
    );
    println!("Drop configuration table");
    conn.execute("DROP TABLE IF EXISTS configuration", ())?;
    println!("Create new configuration table");
    conn.execute(
        "CREATE TABLE configuration (
            id INTEGER PRIMARY KEY,
            ledcount INTEGER,
            directionX INTEGER,
            directionY INTEGER,
            directionZ INTEGER,
            tags VARCHAR(255)
        );",
        (),
    )?;

    println!(
        "Createing new Animation table. With version {}",
        DATAVERSION
    );
    println!("Drop Animation table and references");
    conn.execute("DROP TABLE IF EXISTS lightsetting", ())?;
    conn.execute("DROP TABLE IF EXISTS keyframe", ())?;
    conn.execute("DROP TABLE IF EXISTS animation", ())?;
    println!("Create new animation table");
    conn.execute(
        "CREATE TABLE animation (
            id INTEGER PRIMARY KEY,
            priority INTEGER,
            name VARCHAR(255),
            repeat BOOLEAN
        );",
        (),
    )?;

    println!(
        "Createing new key_frame table. With version {}",
        DATAVERSION
    );
    println!("Drop key_frame table");
    println!("Create new key_frame table");
    conn.execute(
        "CREATE TABLE keyframe (
            id INTEGER PRIMARY KEY,
            i INTEGER,
            duration INTEGER,
            animation INTEGER,
            FOREIGN KEY(animation) REFERENCES animation(id) ON DELETE CASCADE
        );",
        (),
    )?;

    println!(
        "Createing new LigthSetting table. With version {}",
        DATAVERSION
    );
    println!("Drop LigthSetting table");
    println!("Create new light_setting table");
    conn.execute(
        "CREATE TABLE lightsetting (
            id INTEGER PRIMARY KEY,
            start INTEGER,
            end INTEGER,
            tags VARCHAR(255),
            r INTEGER,
            b INTEGER,
            g INTEGER,
            keyframe INTEGER,
            FOREIGN KEY(keyframe) REFERENCES keyframe(id) ON DELETE CASCADE
        );",
        (),
    )?;

    Ok(())
}

pub fn setup_database(pool: DBPool) -> GResult {
    let conn = pool.get()?;

    println!("Trying to get meta data");

    let stmt = conn.prepare("SELECT version from meta");

    if stmt.is_err() || stmt.as_ref().ok().is_none() {
        return create_database(pool);
    }

    let mut stmt = stmt?;

    struct Data {
        version: String,
    }

    let version_iter = stmt.query_map([], |row| {
        Ok(Data {
            version: row.get(0)?,
        })
    });

    println!("Process meta");

    if version_iter.is_err() || version_iter.as_ref().ok().is_none() {
        create_database(pool)?;
    } else {
        let version_iter = version_iter.ok().unwrap();

        let mut recreate = true;

        for data in version_iter {
            let version = data.unwrap().version;
            println!("Found version {}", version);

            if !DATAVERSION.to_string().eq(&version) {
                println!("Mismatched versions recreating database");
                recreate = true;
                break;
            }

            recreate = false;
        }

        if recreate {
            create_database(pool)?;
        }
    }
    Ok(())
}