use crate::Result;
use geoffrey_db::database::Database;
use geoffrey_models::models::parameters::{CommandRequest, GeoffreyParam, GeoffreyRequest};
use geoffrey_models::models::player::Player;
use geoffrey_models::models::response::api_error::GeoffreyAPIError;
use geoffrey_models::models::token::Token;

pub fn get_player_from_req<T: GeoffreyParam>(
    db: &Database,
    req: &CommandRequest<T>,
) -> Result<Option<Player>> {
    if let Some(user_id) = &req.user_id {
        Ok(db
            .filter(|_, player: &Player| player.has_user_id(user_id))?
            .next())
    } else {
        Ok(None)
    }
}

pub fn get_token_from_req<T: GeoffreyParam, U: GeoffreyRequest<T>>(
    db: &Database,
    req: &U,
) -> Result<Option<Token>> {
    Ok(db
        .filter(|_, token: &Token| token.secret == req.get_token())?
        .next())
}

pub fn validate_string_parameter(param_name: &str, s: &str, max_len: usize) -> Result<()> {
    if s.len() < max_len {
        Ok(())
    } else {
        Err(GeoffreyAPIError::ParameterInvalid(param_name.to_string()))
    }
}