mod capture;
mod fieldlens;
mod model;
mod printers;
mod state;
mod zpl;

use parking_lot::Mutex;
use tauri::{AppHandle, Manager, State};

use capture::CaptureRuntime;
use model::{AppConfig, CaptureStatus, JobSummary, LoginPoll, LoginStart, SyncResult};
use printers::{SystemPrinter, VirtualPrinterStatus};
use state::SharedState;

struct AppState {
    shared: SharedState,
    runtime: Mutex<Option<CaptureRuntime>>,
}

#[tauri::command]
fn get_config(state: State<'_, AppState>) -> AppConfig {
    state.shared.config.lock().clone()
}

#[tauri::command]
fn save_config(config: AppConfig, state: State<'_, AppState>) -> Result<AppConfig, String> {
    state
        .shared
        .replace_config(config)
        .map_err(|error| error.to_string())
}

#[tauri::command]
fn get_status(state: State<'_, AppState>) -> CaptureStatus {
    CaptureStatus {
        running: state.runtime.lock().is_some(),
        mode: state.shared.config.lock().mode.clone(),
        pending: state.shared.pending_count(),
        jobs: state.shared.jobs.lock().len(),
    }
}

#[tauri::command]
fn recent_jobs(state: State<'_, AppState>) -> Vec<JobSummary> {
    state.shared.jobs.lock().iter().cloned().collect()
}

#[tauri::command]
fn start_capture(app: AppHandle, state: State<'_, AppState>) -> Result<(), String> {
    let mut runtime = state.runtime.lock();
    if runtime.is_some() {
        return Ok(());
    }

    let config = state.shared.config.lock().clone();
    let next = capture::start(config, state.shared.clone(), app).map_err(|error| error.to_string())?;
    *runtime = Some(next);
    Ok(())
}

#[tauri::command]
fn stop_capture(state: State<'_, AppState>) {
    if let Some(runtime) = state.runtime.lock().take() {
        runtime.stop();
    }
}

#[tauri::command]
fn list_system_printers() -> Result<Vec<SystemPrinter>, String> {
    printers::list_system_printers().map_err(|error| error.to_string())
}

#[tauri::command]
fn get_virtual_printer_status() -> Result<VirtualPrinterStatus, String> {
    printers::virtual_printer_status().map_err(|error| error.to_string())
}

#[tauri::command]
fn install_virtual_printer(target_printer: String) -> Result<VirtualPrinterStatus, String> {
    printers::install_virtual_printer(&target_printer).map_err(|error| error.to_string())
}

#[tauri::command]
fn remove_virtual_printer() -> Result<VirtualPrinterStatus, String> {
    printers::remove_virtual_printer().map_err(|error| error.to_string())
}

#[tauri::command]
fn begin_login(state: State<'_, AppState>) -> Result<LoginStart, String> {
    fieldlens::begin_login(&state.shared).map_err(|error| error.to_string())
}

#[tauri::command]
fn poll_login(state: State<'_, AppState>) -> Result<LoginPoll, String> {
    fieldlens::poll_login(&state.shared).map_err(|error| error.to_string())
}

#[tauri::command]
fn sync_pending(state: State<'_, AppState>) -> Result<SyncResult, String> {
    fieldlens::sync_pending(&state.shared).map_err(|error| error.to_string())
}

pub fn run() {
    tauri::Builder::default()
        .plugin(tauri_plugin_opener::init())
        .plugin(tauri_plugin_process::init())
        .plugin(tauri_plugin_updater::Builder::new().build())
        .setup(|app| {
            let data_dir = app.path().app_data_dir()?;
            let shared = SharedState::load(data_dir)
                .map_err(|error| std::io::Error::other(error.to_string()))?;
            app.manage(AppState {
                shared,
                runtime: Mutex::new(None),
            });
            Ok(())
        })
        .invoke_handler(tauri::generate_handler![
            get_config,
            save_config,
            get_status,
            recent_jobs,
            start_capture,
            stop_capture,
            list_system_printers,
            get_virtual_printer_status,
            install_virtual_printer,
            remove_virtual_printer,
            begin_login,
            poll_login,
            sync_pending
        ])
        .run(tauri::generate_context!())
        .expect("error while running FieldLens Print");
}