use axum::routing::trace;
use sqlx::{PgPool, Pool, Postgres};

use crate::routes::posts::Post;

pub struct PostsDatasource;
impl PostsDatasource {
    pub async fn get_all(pool: &Pool<Postgres>) -> Result<Vec<Post>, sqlx::Error> {
        sqlx::query_as!(Post, "SELECT p.post_id, a.first_name, a.last_name, p.title, p.body, p.created_at FROM posts p LEFT JOIN authors a ON a.author_id = p.author_id WHERE p.deleted_at IS NULL ORDER BY p.created_at DESC LIMIT 10")
        .fetch_all(pool)
        .await
    }

    pub async fn get_one(pool: &Pool<Postgres>, post_id: i32) -> Result<Post, sqlx::Error> {
        sqlx::query_as!(Post, "SELECT p.post_id, a.first_name, a.last_name, p.title, p.body, p.created_at FROM posts p LEFT JOIN authors a ON a.author_id = p.author_id WHERE p.deleted_at IS NULL AND p.post_id = $1 ORDER BY p.created_at DESC", post_id)
        .fetch_one(pool)
        .await
    }

    pub async fn get_popular(pool: &Pool<Postgres>) -> Result<Vec<Post>, sqlx::Error> {
        sqlx::query_as!(Post, "SELECT p.post_id, a.first_name, a.last_name, p.title, p.body, p.created_at FROM posts p LEFT JOIN authors a ON a.author_id = p.author_id LEFT JOIN comments c ON p.post_id = c.post_id WHERE p.deleted_at IS NULL GROUP BY p.post_id, a.first_name, a.last_name ORDER BY p.created_at DESC LIMIT 3")
        .fetch_all(pool)
        .await
    }
}