use actix_cors::Cors;
use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer, Responder};
use actix_web_actors::ws;
use clap::Parser;
use env_logger::Env;

use sea_battle_backend::data::{GameRules, PlayConfiguration};
use sea_battle_backend::human_player_ws::{HumanPlayerWS, StartMode};

/// Simple sea battle server
#[derive(Parser, Debug, Clone)]
#[clap(author, version, about, long_about = None)]
struct Args {
    /// The address this server will listen to
    #[clap(short, long, value_parser, default_value = "0.0.0.0:7000")]
    listen_address: String,

    /// CORS (allowed origin) set to '*' to allow all origins
    #[clap(short, long, value_parser)]
    cors: Option<String>,
}

/// The default '/' route
async fn index() -> impl Responder {
    HttpResponse::Ok().json("Sea battle backend")
}

/// The default 404 route
async fn not_found() -> impl Responder {
    HttpResponse::NotFound().json("You missed your strike lol")
}

/// Get bot configuration
async fn bot_configuration() -> impl Responder {
    HttpResponse::Ok().json(PlayConfiguration::default())
}

/// Start bot game
async fn start_bot_play(
    req: HttpRequest,
    stream: web::Payload,
    query: web::Query<GameRules>,
) -> Result<HttpResponse, actix_web::Error> {
    let errors = query.0.get_errors();
    if !errors.is_empty() {
        return Ok(HttpResponse::BadRequest().json(errors));
    }

    let mut player_ws = HumanPlayerWS::default();
    player_ws.start_mode = StartMode::Bot(query.0.clone());

    let resp = ws::start(player_ws, &req, stream);
    log::info!("New bot play with configuration: {:?}", &query.0);
    resp
}

/// Multi-players configuration
async fn multi_players_config() -> impl Responder {
    HttpResponse::Ok().json(GameRules::multi_players_rules())
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();

    let args: Args = Args::parse();
    let args_clone = args.clone();

    HttpServer::new(move || {
        let mut cors = Cors::default();
        match args_clone.cors.as_deref() {
            Some("*") => cors = cors.allow_any_origin(),
            Some(orig) => cors = cors.allowed_origin(orig),
            None => {}
        }

        App::new()
            .wrap(cors)
            .route("/bot/config", web::get().to(bot_configuration))
            .route("/bot/play", web::get().to(start_bot_play))
            .route("/random/config", web::get().to(multi_players_config))
            .route("/", web::get().to(index))
            .route("{tail:.*}", web::get().to(not_found))
    })
    .bind(args.listen_address)?
    .run()
    .await
}