use rusqlite::Connection;

use std::{sync::RwLock, path::PathBuf, process::Command};

pub static PROGRAM_HOME_PATH: RwLock<std::string::String> = RwLock::new(String::new());

pub fn init() {
    let program_home_path = if cfg!(target_os = "windows") {
        let binding = std::env::var("APP_DATA").expect("No APP_DATA directory");
        let mut appdata = PathBuf::from(&binding);

        appdata = appdata.join("learn-hieroglyph");
        Command::new("mkdir").arg(&appdata).spawn().expect(&format!("Cannot create program's home: {}", &appdata.to_str().unwrap())).wait().unwrap();

        appdata
    } else {
        let binding = std::env::var("HOME").expect("No HOME directory");
        let mut home = PathBuf::from(&binding);

        home = home.join(".config/learn-hieroglyph");
        Command::new("mkdir").args(["-p", &home.to_str().unwrap()]).spawn().expect(&format!("Cannot create program's home: {}", &home.to_str().unwrap())).wait().unwrap();

        home
    };
    let mut p = PROGRAM_HOME_PATH.write().unwrap();
    *p = program_home_path.as_path().to_str().unwrap().to_string();

    let db_path = program_home_path.join("db.sqlite");


    let connection = Connection::open(db_path).unwrap();

    connection.execute("CREATE TABLE IF NOT EXISTS cards (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        image_hash CHAR(64),
        hieroglyph VARCHAR(2),
        translation VARCHAR(128)
    )",()).unwrap();
}

pub fn get_program_home_path() -> &'static RwLock<String> {
    &PROGRAM_HOME_PATH
}