use crate::model::user::{AdminUser, User};
use rocket::{
    form::Form,
    get, post,
    request::FlashMessage,
    response::{Flash, Redirect},
    routes, FromForm, Route, State,
};
use rocket_dyn_templates::{tera::Context, Template};
use sqlx::SqlitePool;

#[get("/user")]
async fn index(
    db: &State<SqlitePool>,
    admin: AdminUser,
    flash: Option<FlashMessage<'_>>,
) -> Template {
    let users = User::all(db).await;

    let mut context = Context::new();
    if let Some(msg) = flash {
        context.insert("flash", &msg.into_inner());
    }
    context.insert("users", &users);
    context.insert("loggedin_user", &admin.user);

    Template::render("admin/user/index", context.into_json())
}

#[get("/user/<user>/reset-pw")]
async fn resetpw(db: &State<SqlitePool>, _admin: AdminUser, user: i32) -> Flash<Redirect> {
    let user = User::find_by_id(db, user).await;
    match user {
        Some(user) => {
            user.reset_pw(db).await;
            Flash::success(
                Redirect::to("/admin/user"),
                format!("Successfully reset pw of {}", user.name),
            )
        }
        None => Flash::error(Redirect::to("/admin/user"), "User does not exist"),
    }
}

#[get("/user/<user>/delete")]
async fn delete(db: &State<SqlitePool>, _admin: AdminUser, user: i32) -> Flash<Redirect> {
    let user = User::find_by_id(db, user).await;
    match user {
        Some(user) => {
            user.delete(db).await;
            Flash::success(
                Redirect::to("/admin/user"),
                format!("Sucessfully deleted user {}", user.name),
            )
        }
        None => Flash::error(Redirect::to("/admin/user"), "User does not exist"),
    }
}

#[derive(FromForm)]
struct UserEditForm {
    id: i32,
    is_guest: bool,
    is_cox: bool,
    is_admin: bool,
}

#[post("/user", data = "<data>")]
async fn update(
    db: &State<SqlitePool>,
    data: Form<UserEditForm>,
    _admin: AdminUser,
) -> Flash<Redirect> {
    let user = User::find_by_id(db, data.id).await;
    let Some(user) = user else {
            return Flash::error(
                Redirect::to("/admin/user"),
                format!("User with ID {} does not exist!", data.id),
            )
    };

    user.update(db, data.is_cox, data.is_admin, data.is_guest)
        .await;

    Flash::success(Redirect::to("/admin/user"), "Successfully updated user")
}

#[derive(FromForm)]
struct UserAddForm<'r> {
    name: &'r str,
    is_guest: bool,
}

#[post("/user/new", data = "<data>")]
async fn create(
    db: &State<SqlitePool>,
    data: Form<UserAddForm<'_>>,
    _admin: AdminUser,
) -> Flash<Redirect> {
    if User::create(db, data.name, data.is_guest).await {
        Flash::success(Redirect::to("/admin/user"), "Successfully created user")
    } else {
        Flash::error(
            Redirect::to("/admin/user"),
            format!("User {} already exists", data.name),
        )
    }
}

pub fn routes() -> Vec<Route> {
    routes![index, resetpw, update, create, delete]
}