tetratto-core 18.0.2

use oiseau::cache::Cache;
use crate::model::{Error, Result, auth::User, communities::PostView};
use crate::{auto_method, DataManager};
use oiseau::{execute, get, params, query_row, PostgresRow};

impl DataManager {
    /// Get a [`PostView`] from an SQL row.
    pub(crate) fn get_post_view_from_row(x: &PostgresRow) -> PostView {
        PostView {
            id: get!(x->0(i64)) as usize,
            created: get!(x->1(i64)) as usize,
            owner: get!(x->2(i64)) as usize,
            post: get!(x->3(i64)) as usize,
        }
    }

    auto_method!(get_post_view_by_id()@get_post_view_from_row -> "SELECT * FROM post_views WHERE id = $1" --name="post_view" --returns=PostView --cache-key-tmpl="atto.post_view:{}");

    /// Get a post view by `owner` and `post`.
    pub async fn get_post_view_by_owner_post(&self, owner: usize, post: usize) -> Result<PostView> {
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = query_row!(
            &conn,
            "SELECT * FROM post_views WHERE owner = $1 AND post = $2 LIMIT 1",
            &[&(owner as i64), &(post as i64)],
            |x| { Ok(Self::get_post_view_from_row(x)) }
        );

        if res.is_err() {
            return Err(Error::GeneralNotFound("post view".to_string()));
        }

        Ok(res.unwrap())
    }

    /// Create a new post view in the database.
    ///
    /// # Arguments
    /// * `data` - a mock [`PostView`] object to insert
    pub async fn create_post_view(&self, data: PostView) -> Result<usize> {
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = execute!(
            &conn,
            "INSERT INTO post_views VALUES ($1, $2, $3, $4)",
            params![
                &(data.id as i64),
                &(data.created as i64),
                &(data.owner as i64),
                &(data.post as i64),
            ]
        );

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        // incr post views count
        self.incr_post_views(data.post).await?;

        // return
        Ok(data.id)
    }

    pub async fn delete_post_view(&self, id: usize, user: &User) -> Result<()> {
        let y = self.get_post_view_by_id(id).await?;

        if user.id != y.owner {
            return Err(Error::NotAllowed);
        }

        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = execute!(
            &conn,
            "DELETE FROM post_views WHERE id = $1",
            &[&(id as i64)]
        );

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        self.0.1.remove(format!("atto.post_view:{}", id)).await;

        // decr post views count
        self.decr_post_views(y.post).await?;

        // return
        Ok(())
    }
}