use crate::async_handler;
use actix::{Handler, ResponseActFuture, WrapFuture};
use sqlx::PgPool;

use crate::database::Database;
use crate::model::*;

use super::Result;

#[derive(Debug, thiserror::Error)]
pub enum Error {
    #[error("Can't create order item")]
    CantCreate,
    #[error("Can't find order item does to lack of identity")]
    NoIdentity,
    #[error("Order item does not exists")]
    NotExists,
    #[error("Failed to load all order items")]
    All,
}

#[derive(actix::Message)]
#[rtype(result = "Result<Vec<OrderItem>>")]
pub struct AllOrderItems;

async_handler!(AllOrderItems, all_order_items, Vec<OrderItem>);

pub async fn all_order_items(_msg: AllOrderItems, pool: PgPool) -> Result<Vec<OrderItem>> {
    sqlx::query_as(
        r#"
SELECT id, buyer_id, status
FROM order_items
    "#,
    )
    .fetch_all(&pool)
    .await
    .map_err(|e| {
        log::error!("{e:?}");
        super::Error::OrderItem(Error::All)
    })
}

#[derive(actix::Message)]
#[rtype(result = "Result<OrderItem>")]
pub struct CreateOrderItem {
    pub buyer_id: AccountId,
    pub status: OrderStatus,
}

async_handler!(CreateOrderItem, create_order_item, OrderItem);

async fn create_order_item(msg: CreateOrderItem, db: PgPool) -> Result<OrderItem> {
    sqlx::query_as(
        r#"
INSERT INTO order_items (buyer_id, status)
VALUES ($1, $2)
RETURNING id, buyer_id, status
    "#,
    )
    .bind(msg.buyer_id)
    .bind(msg.status)
    .fetch_one(&db)
    .await
    .map_err(|e| {
        log::error!("{e:?}");
        super::Error::OrderItem(Error::CantCreate)
    })
}

#[derive(actix::Message)]
#[rtype(result = "Result<OrderItem>")]
pub struct FindOrderItem {
    pub id: OrderItemId,
}

async_handler!(FindOrderItem, find_order_item, OrderItem);

async fn find_order_item(msg: FindOrderItem, db: PgPool) -> Result<OrderItem> {
    sqlx::query_as(
        r#"
SELECT id, buyer_id, status
FROM order_items
WHERE id = $1
    "#,
    )
    .bind(msg.id)
    .fetch_one(&db)
    .await
    .map_err(|e| {
        log::error!("{e:?}");
        super::Error::OrderItem(Error::NotExists)
    })
}