mod commands;
mod db;
mod error;
mod models;
mod services;

use std::sync::{Arc, Mutex};
use tauri::Manager;

pub struct AppState {
    pub db: Arc<Mutex<rusqlite::Connection>>,
    pub encryption_key: [u8; 32],
    pub http_client: reqwest::Client,
}

#[cfg_attr(mobile, tauri::mobile_entry_point)]
pub fn run() {
    tauri::Builder::default()
        .plugin(tauri_plugin_dialog::init())
        .plugin(tauri_plugin_notification::init())
        .setup(|app| {
            let db_dir = app.path().app_data_dir()?;
            std::fs::create_dir_all(&db_dir)?;

            let db_path = db_dir.join("orchai.db");
            let conn = db::init(&db_path).expect("Failed to initialize database");

            let key_path = db_dir.join("orchai.key");
            let encryption_key = load_or_generate_key(&key_path)?;

            let http_client = reqwest::Client::new();

            let db_arc = Arc::new(Mutex::new(conn));
            app.manage(AppState {
                db: db_arc.clone(),
                encryption_key,
                http_client: http_client.clone(),
            });

            // Start background poller
            services::poller::start(
                db_arc.clone(),
                encryption_key,
                http_client,
                app.handle().clone(),
            );

            // Start agent orchestrator
            services::orchestrator::start(
                db_arc,
                app.handle().clone(),
            );

            Ok(())
        })
        .invoke_handler(tauri::generate_handler![
            commands::project::create_project,
            commands::project::list_projects,
            commands::project::get_project,
            commands::project::update_project,
            commands::project::delete_project,
            commands::credential::set_tuleap_credentials,
            commands::credential::get_tuleap_credentials,
            commands::credential::delete_tuleap_credentials,
            commands::credential::test_tuleap_connection,
            commands::tracker::add_tracker,
            commands::tracker::list_trackers,
            commands::tracker::update_tracker,
            commands::tracker::remove_tracker,
            commands::tracker::get_tracker_fields,
            commands::tracker::list_processed_tickets,
            commands::poller::manual_poll,
            commands::poller::get_queue_status,
            commands::notification::list_notifications,
            commands::notification::mark_notification_read,
            commands::notification::mark_all_notifications_read,
            commands::orchestrator::get_ticket_result,
            commands::orchestrator::retry_ticket,
            commands::orchestrator::cancel_ticket,
            commands::worktree::list_worktrees,
            commands::worktree::get_worktree_diff,
            commands::worktree::apply_fix_to_branch,
            commands::worktree::delete_worktree_cmd,
            commands::worktree::list_local_branches,
        ])
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

fn load_or_generate_key(path: &std::path::Path) -> Result<[u8; 32], Box<dyn std::error::Error>> {
    use rand::RngCore;
    if path.exists() {
        let bytes = std::fs::read(path)?;
        if bytes.len() != 32 {
            return Err("Invalid key file size".into());
        }
        let mut key = [0u8; 32];
        key.copy_from_slice(&bytes);
        Ok(key)
    } else {
        let mut key = [0u8; 32];
        rand::rngs::OsRng.fill_bytes(&mut key);
        std::fs::write(path, key)?;
        Ok(key)
    }
}