mod bookmark;
mod database;
mod history;
mod identity;

use gtk::glib::user_config_dir;
use sqlite::{Connection, Transaction};
use std::{
    fs::create_dir_all,
    path::{Path, PathBuf},
    rc::Rc,
    sync::RwLock,
};

const VENDOR: &str = "YGGverse";
const APP_ID: &str = "Yoda";
const BRANCH: &str = "master";

const DB_NAME: &str = "profile.sqlite3";

pub struct Profile {
    database: Rc<RwLock<Connection>>,
    config_path: PathBuf,
}

impl Profile {
    // Constructors

    pub fn new() -> Self {
        // Init profile path
        let mut config_path = user_config_dir();

        config_path.push(VENDOR);
        config_path.push(APP_ID);
        config_path.push(BRANCH);
        config_path.push(format!(
            "{}.{}",
            env!("CARGO_PKG_VERSION_MAJOR"),
            env!("CARGO_PKG_VERSION_MINOR")
        )); // @TODO remove after auto-migrate feature implementation

        if let Err(reason) = create_dir_all(&config_path) {
            panic!("{reason}")
        }

        // Init database path
        let mut database_path = config_path.clone();
        database_path.push(DB_NAME);

        // Init database connection
        let connection = match Connection::open(database_path.as_path()) {
            Ok(connection) => Rc::new(RwLock::new(connection)),
            Err(reason) => panic!("{reason}"),
        };

        // Init profile components
        {
            // Init writable connection
            let mut connection = match connection.write() {
                Ok(connection) => connection,
                Err(e) => todo!("{e}"),
            };

            // Init new transaction
            let transaction = match connection.transaction() {
                Ok(transaction) => transaction,
                Err(e) => todo!("{e}"),
            };

            // Begin migration
            match migrate(&transaction) {
                Ok(_) => {
                    // Confirm changes
                    match transaction.commit() {
                        Ok(_) => {} // @TODO
                        Err(e) => todo!("{e}"),
                    }
                }
                Err(e) => todo!("{e}"),
            }
        } // unlock database

        // Result
        Self {
            database: connection,
            config_path,
        }
    }

    // Getters

    pub fn database(&self) -> &Rc<RwLock<Connection>> {
        &self.database
    }

    pub fn config_path(&self) -> &Path {
        self.config_path.as_path()
    }
}

pub fn migrate(tx: &Transaction) -> Result<(), String> {
    // Migrate self components
    if let Err(e) = database::init(tx) {
        return Err(e.to_string());
    }

    // Delegate migration to children components
    bookmark::migrate(tx)?;
    history::migrate(tx)?;
    identity::migrate(tx)?;

    // Success
    Ok(())
}