use std::{
    env::{self, VarError},
    error::Error,
    fs,
    path::PathBuf,
    sync::LazyLock,
};

use crate::db;

pub static STORE_DIR: LazyLock<PathBuf> = LazyLock::new(|| {
    env::var("PERSISTENT_STORE")
        .map(PathBuf::from)
        .unwrap_or_else(|_| PathBuf::from("./store"))
});

pub static DATABASE: LazyLock<PathBuf> = LazyLock::new(|| STORE_DIR.join("database.sqlite"));
pub static BLOB_STORE: LazyLock<PathBuf> = LazyLock::new(|| STORE_DIR.join("blobs"));
pub static FEATURES_FILE: LazyLock<PathBuf> = LazyLock::new(|| STORE_DIR.join("features.json"));

pub fn setup() -> Result<(), Box<dyn Error>> {
    tracing_subscriber::fmt::init();

    fs::create_dir_all(&*STORE_DIR)?;
    fs::create_dir_all(&*BLOB_STORE)?;
    db::run_migrations()?;

    Ok(())
}

pub fn port() -> u16 {
    match env::var("PORT") {
        Ok(p) => match p.parse::<u16>() {
            Ok(port) => return port,
            _ => log::error!("Failed to parse port."),
        },
        Err(VarError::NotPresent) => log::warn!("No port set, using default."),
        Err(VarError::NotUnicode(payload)) => log::error!("Invalid port: {:?}", payload),
    };
    2004
}