use actix_web::web::{HttpResponse, Json};
use actix_web::{post, Responder};
use chrono::{Duration, Utc};
use jsonwebtoken::{encode, EncodingKey, Header};
use log::debug;

use crate::data::LoginRequest;
use crate::data::{secret_key, Claims, CreateAccountRequest, Token};
use crate::database::{create_user, get_user, user_exists};

#[post("/register")]
async fn register(user: Json<CreateAccountRequest>) -> impl Responder {
    if !user.username.is_empty() && user.password.len() > 5 && user.password == user.confirmation {
        if user_exists(&user.username) {
            HttpResponse::BadRequest()
        } else if let Some(_user) = create_user(&user.username, &user.password) {
            HttpResponse::Ok()
        } else {
            HttpResponse::InternalServerError()
        }
    } else {
        HttpResponse::BadRequest()
    }
}

#[post("/login")]
async fn login(creds: Json<LoginRequest>) -> impl Responder {
    debug!("Logging in: {}", creds.username);
    if let Some(user) = get_user(&creds.username, &creds.password) {
        let claims = Claims {
            sub: user.id.to_string(),
            exp: (Utc::now() + Duration::days(5)).timestamp(),
        };
        let token = encode(
            &Header::default(),
            &claims,
            &EncodingKey::from_secret(secret_key().as_bytes()),
        )
        .unwrap();
        HttpResponse::Ok().json(Token { token: &token })
    } else {
        HttpResponse::NotFound().finish()
    }
}