use std::path::PathBuf;
use std::sync::Mutex;

use rusqlite::Connection;

use crate::db;
use crate::llama::LlamaManager;

/// Shared application state managed by Tauri.
pub struct AppState {
    pub db: Mutex<Connection>,
    pub data_dir: PathBuf,
}

impl AppState {
    pub fn new() -> Result<Self, String> {
        let data_dir = LlamaManager::data_dir();
        std::fs::create_dir_all(&data_dir)
            .map_err(|e| format!("Cannot create data dir: {e}"))?;

        let db_path = data_dir.join("voice_to_notes.db");
        let conn = db::open_database(&db_path)
            .map_err(|e| format!("Cannot open database: {e}"))?;

        Ok(Self {
            db: Mutex::new(conn),
            data_dir,
        })
    }
}