// Prevents additional console window on Windows in release, DO NOT REMOVE!!
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

use std::sync::mpsc::Receiver;
use std::{path::PathBuf, sync::Mutex};

use config::Config;
use crossbeam::channel::Sender;
use notify::PollWatcher;
use overlay::{Event, Overlay};

use plan::{Plan, PlanMetadata};
use poe_data::world_area::WorldAreasMap;
use poe_reader::filter_func;
use poe_reader::{blocking_area_filtered_rx, poe_client_log_receiver};
use simple_logger::SimpleLogger;
use storage::Storage;
use tauri::CustomMenuItem;
use tauri::Manager;

use tauri::SystemTray;
use tauri::SystemTrayEvent;
use tauri::SystemTrayMenu;
use tauri::SystemTrayMenuItem;
use tauri::Window;

use lazy_static::lazy_static;

mod config;
mod overlay;
mod plan;
mod poe_reader;
mod storage;

lazy_static! {
    static ref WORLD_AREAS_MAP: WorldAreasMap = poe_data::world_area::load_world_areas_map(
        include_str!("../../data/processed_world_areas.json")
    );
}

#[tauri::command]
fn set_interactable(interactable: bool, state: tauri::State<Sender<Event>>) {
    if interactable {
        state.send(overlay::State::Interactable {}.into()).ok();
    } else {
        state.send(overlay::Event::Return).ok();
    }
}

#[tauri::command]
fn load_world_areas() -> WorldAreasMap {
    log::info!("Loading world areas");
    WORLD_AREAS_MAP.clone()
}

#[tauri::command]
fn load_config(state: tauri::State<Mutex<Storage>>) -> Option<Config> {
    Some(state.lock().ok()?.config.clone())
}

#[tauri::command]
fn update_config(config: Config, state: tauri::State<Mutex<Storage>>) {
    log::info!("Saved config: {:?}", config);
    if let Ok(mut storage) = state.lock() {
        storage.config = config.clone();
        storage.save_config();
    }
}

#[tauri::command]
fn enumerate_stored_plans() -> Vec<PlanMetadata> {
    Storage::enumerate_plans()
}

#[tauri::command]
fn load_plan_at_path(
    path: PathBuf,
    save_local: Option<bool>,
    state: tauri::State<Mutex<Storage>>,
) -> Option<Plan> {
    if !path.exists() {
        return None;
    }

    let mut storage = match state.lock() {
        Ok(storage) => storage,
        Err(_) => return None,
    };

    let save_local = save_local.unwrap_or(true);

    storage.last_plan = Some(path.clone());
    Storage::load_plan_at_path(path, save_local)
}

#[tauri::command]
fn save_plan_at_path(path: PathBuf, plan: Plan) -> bool {
    if let Some(path_string) = path.with_extension("json").to_str() {
        return Storage::save_plan_at_path(path_string, plan).is_ok();
    }

    false
}

#[tauri::command]
fn save_plan_at_store(name: String, plan: Plan) -> Option<PathBuf> {
    Storage::save_plan_at_store_path(&name, plan).ok()
}

#[tauri::command]
fn base_plan() -> Plan {
    const BASE_PLAN_STRING: &str = include_str!("../../data/base_plan.json");
    serde_json::from_str(BASE_PLAN_STRING).expect("could not load base_plan")
}

fn main() {
    SimpleLogger::new()
        .with_module_level("underlayer", log::LevelFilter::Info)
        .with_level(log::LevelFilter::Trace)
        .init()
        .expect("Could not init logger");

    let settings = CustomMenuItem::new("settings".to_string(), "Settings");
    let editor = CustomMenuItem::new("editor".to_string(), "Plan Editor");
    let force_show = CustomMenuItem::new("force_show".to_string(), "Force show");
    let exit = CustomMenuItem::new("exit".to_string(), "Exit");
    let tray_menu = SystemTrayMenu::new()
        .add_item(settings)
        .add_item(editor)
        .add_item(force_show)
        .add_native_item(SystemTrayMenuItem::Separator)
        .add_item(exit);
    let system_tray = SystemTray::new().with_menu(tray_menu);

    tauri::Builder::default()
        .setup(|app| {
            let tx = Overlay::initialize(
                app.get_window("Overlay")
                    .expect("Could not get main overlay window"),
                "Path of Exile",
            );
            app.manage(tx);
            app.manage(Mutex::new(Storage::default()));

            if let Ok(storage) = app.state::<Mutex<Storage>>().lock() {
                listen_for_zone_changes(
                    storage.config.poe_client_log_path.clone(),
                    app.get_window("Overlay")
                        .expect("Could not get main overlay window"),
                );
            }

            // app.get_window("Overlay")
            //     .expect("Could not get main overlay window")
            //     .open_devtools();

            Ok(())
        })
        .invoke_handler(tauri::generate_handler![
            set_interactable,
            load_world_areas,
            load_config,
            update_config,
            enumerate_stored_plans,
            load_plan_at_path,
            save_plan_at_path,
            save_plan_at_store,
            base_plan,
        ])
        .system_tray(system_tray)
        .on_system_tray_event(|app, event| match event {
            SystemTrayEvent::MenuItemClick { id, .. } => match id.as_str() {
                "exit" => {
                    std::process::exit(0);
                }
                "editor" | "settings" => {
                    if let Some(window) = app.get_window("Normal") {
                        window.show().ok();
                        window.emit_to("Normal", "loadTab", id).ok();
                    }
                }
                "force_show" => {
                    app.state::<Sender<Event>>()
                        .send(overlay::State::Interactable {}.into())
                        .ok();
                }
                _ => {}
            },
            _ => {}
        })
        .on_window_event(|event| match event.event() {
            tauri::WindowEvent::CloseRequested { api, .. } => {
                event.window().hide().ok();
                api.prevent_close();
            }
            _ => {}
        })
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

fn listen_for_zone_changes(poe_client_log_path: Option<PathBuf>, window: Window) {
    std::thread::spawn(move || {
        // need _watcher
        if let Some((enter_area_receiver, _watcher)) = receiver_from_path(&poe_client_log_path) {
            let world_areas: WorldAreasMap = load_world_areas();
            for area in blocking_area_filtered_rx(&enter_area_receiver) {
                if let Some(area) = filter_func(area) {
                    if let Some(entered) = world_areas.get(&area) {
                        window.emit_to("Overlay", "entered", &entered.named_id).ok();
                    }
                }
            }
        }
    });
}

fn receiver_from_path(path: &Option<PathBuf>) -> Option<(Receiver<String>, PollWatcher)> {
    if let Some(poe_path) = path {
        if poe_path.exists() {
            return Some(poe_client_log_receiver(poe_path.clone()));
        }
    }

    None
}