use std::borrow::Cow;
use serde::{Serialize, Deserialize};
use rocket_dyn_templates::Template;
use rocket::response::{Redirect};
use rocket::request::{FlashMessage};
use crate::schema;

#[derive(Serialize, Deserialize, Debug)]
struct FlashData {
    has_data: bool,
    kind: Cow<'static, str>,
    message: Cow<'static, str>
}

impl FlashData {
    const EMPTY: Self = Self { has_data: false, message: Cow::Borrowed(""), kind: Cow::Borrowed("") };
}

#[derive(Serialize, Deserialize, Debug)]
struct GameNightsData {
    gamenights: Vec::<schema::GameNight>,
    flash: FlashData
}

#[get("/gamenights")]
pub async fn gamenights(conn: schema::DbConn) -> Template {
    let gamenights = schema::get_all_gamenights(conn).await;
    
    let data = GameNightsData {
        gamenights: gamenights,
        flash: FlashData::EMPTY
    };

    Template::render("gamenights", &data)
}

#[get("/")]
pub async fn index() -> Redirect {
    Redirect::to(uri!(gamenights))
}

#[derive(Serialize, Deserialize, Debug)]
struct GameNightAddData {
    post_url: String,
    flash : FlashData
}

#[get("/gamenight/add")]
pub async fn add_game_night(flash: Option<FlashMessage<'_>>) -> Template {
    let flash_data = match flash {
        None => FlashData::EMPTY,
        Some(flash) => FlashData { 
            has_data: true, 
            message: Cow::Owned(flash.message().to_string()), 
            kind: Cow::Owned(flash.kind().to_string()) 
        }
    };
    
    let data = GameNightAddData {
        post_url: "/api/gamenight".to_string(),
        flash: flash_data
    };

    Template::render("gamenight_add", &data)
}

#[derive(Serialize, Deserialize, Debug)]
struct RegisterData {
    flash : FlashData
}

#[get("/register")]
pub async fn register(flash: Option<FlashMessage<'_>>) -> Template {
    let flash_data = match flash {
        None => FlashData::EMPTY,
        Some(flash) => FlashData { 
            has_data: true,
            message: Cow::Owned(flash.message().to_string()),
            kind: Cow::Owned(flash.kind().to_string())
        }
    };

    let data = RegisterData {
        flash: flash_data
    };

    Template::render("register", &data)
}