path: root/server/lemmy_db/src/post.rs

use crate::{
  naive_now,
  schema::{post, post_like, post_read, post_saved},
  Crud,
  Likeable,
  Readable,
  Saveable,
};
use diesel::{dsl::*, result::Error, *};
use serde::{Deserialize, Serialize};

#[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
#[table_name = "post"]
pub struct Post {
  pub id: i32,
  pub name: String,
  pub url: Option<String>,
  pub body: Option<String>,
  pub creator_id: i32,
  pub community_id: i32,
  pub removed: bool,
  pub locked: bool,
  pub published: chrono::NaiveDateTime,
  pub updated: Option<chrono::NaiveDateTime>,
  pub deleted: bool,
  pub nsfw: bool,
  pub stickied: bool,
  pub embed_title: Option<String>,
  pub embed_description: Option<String>,
  pub embed_html: Option<String>,
  pub thumbnail_url: Option<String>,
  pub ap_id: String,
  pub local: bool,
}

#[derive(Insertable, AsChangeset, Clone, Debug)]
#[table_name = "post"]
pub struct PostForm {
  pub name: String,
  pub url: Option<String>,
  pub body: Option<String>,
  pub creator_id: i32,
  pub community_id: i32,
  pub removed: Option<bool>,
  pub locked: Option<bool>,
  pub published: Option<chrono::NaiveDateTime>,
  pub updated: Option<chrono::NaiveDateTime>,
  pub deleted: Option<bool>,
  pub nsfw: bool,
  pub stickied: Option<bool>,
  pub embed_title: Option<String>,
  pub embed_description: Option<String>,
  pub embed_html: Option<String>,
  pub thumbnail_url: Option<String>,
  pub ap_id: String,
  pub local: bool,
}

impl Post {
  pub fn read(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;
    post.filter(id.eq(post_id)).first::<Self>(conn)
  }

  pub fn list_for_community(
    conn: &PgConnection,
    the_community_id: i32,
  ) -> Result<Vec<Self>, Error> {
    use crate::schema::post::dsl::*;
    post
      .filter(community_id.eq(the_community_id))
      .load::<Self>(conn)
  }

  pub fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;
    post.filter(ap_id.eq(object_id)).first::<Self>(conn)
  }

  pub fn update_ap_id(conn: &PgConnection, post_id: i32, apub_id: String) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;

    diesel::update(post.find(post_id))
      .set(ap_id.eq(apub_id))
      .get_result::<Self>(conn)
  }

  pub fn permadelete(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;

    let perma_deleted = "*Permananently Deleted*";
    let perma_deleted_url = "https://deleted.com";

    diesel::update(post.find(post_id))
      .set((
        name.eq(perma_deleted),
        url.eq(perma_deleted_url),
        body.eq(perma_deleted),
        deleted.eq(true),
        updated.eq(naive_now()),
      ))
      .get_result::<Self>(conn)
  }
}

impl Crud<PostForm> for Post {
  fn read(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;
    post.find(post_id).first::<Self>(conn)
  }

  fn delete(conn: &PgConnection, post_id: i32) -> Result<usize, Error> {
    use crate::schema::post::dsl::*;
    diesel::delete(post.find(post_id)).execute(conn)
  }

  fn create(conn: &PgConnection, new_post: &PostForm) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;
    insert_into(post).values(new_post).get_result::<Self>(conn)
  }

  fn update(conn: &PgConnection, post_id: i32, new_post: &PostForm) -> Result<Self, Error> {
    use crate::schema::post::dsl::*;
    diesel::update(post.find(post_id))
      .set(new_post)
      .get_result::<Self>(conn)
  }
}

#[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
#[belongs_to(Post)]
#[table_name = "post_like"]
pub struct PostLike {
  pub id: i32,
  pub post_id: i32,
  pub user_id: i32,
  pub score: i16,
  pub published: chrono::NaiveDateTime,
}

#[derive(Insertable, AsChangeset, Clone)]
#[table_name = "post_like"]
pub struct PostLikeForm {
  pub post_id: i32,
  pub user_id: i32,
  pub score: i16,
}

impl Likeable<PostLikeForm> for PostLike {
  fn read(conn: &PgConnection, post_id_from: i32) -> Result<Vec<Self>, Error> {
    use crate::schema::post_like::dsl::*;
    post_like
      .filter(post_id.eq(post_id_from))
      .load::<Self>(conn)
  }
  fn like(conn: &PgConnection, post_like_form: &PostLikeForm) -> Result<Self, Error> {
    use crate::schema::post_like::dsl::*;
    insert_into(post_like)
      .values(post_like_form)
      .get_result::<Self>(conn)
  }
  fn remove(conn: &PgConnection, post_like_form: &PostLikeForm) -> Result<usize, Error> {
    use crate::schema::post_like::dsl::*;
    diesel::delete(
      post_like
        .filter(post_id.eq(post_like_form.post_id))
        .filter(user_id.eq(post_like_form.user_id)),
    )
    .execute(conn)
  }
}

#[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
#[belongs_to(Post)]
#[table_name = "post_saved"]
pub struct PostSaved {
  pub id: i32,
  pub post_id: i32,
  pub user_id: i32,
  pub published: chrono::NaiveDateTime,
}

#[derive(Insertable, AsChangeset, Clone)]
#[table_name = "post_saved"]
pub struct PostSavedForm {
  pub post_id: i32,
  pub user_id: i32,
}

impl Saveable<PostSavedForm> for PostSaved {
  fn save(conn: &PgConnection, post_saved_form: &PostSavedForm) -> Result<Self, Error> {
    use crate::schema::post_saved::dsl::*;
    insert_into(post_saved)
      .values(post_saved_form)
      .get_result::<Self>(conn)
  }
  fn unsave(conn: &PgConnection, post_saved_form: &PostSavedForm) -> Result<usize, Error> {
    use crate::schema::post_saved::dsl::*;
    diesel::delete(
      post_saved
        .filter(post_id.eq(post_saved_form.post_id))
        .filter(user_id.eq(post_saved_form.user_id)),
    )
    .execute(conn)
  }
}

#[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
#[belongs_to(Post)]
#[table_name = "post_read"]
pub struct PostRead {
  pub id: i32,
  pub post_id: i32,
  pub user_id: i32,
  pub published: chrono::NaiveDateTime,
}

#[derive(Insertable, AsChangeset, Clone)]
#[table_name = "post_read"]
pub struct PostReadForm {
  pub post_id: i32,
  pub user_id: i32,
}

impl Readable<PostReadForm> for PostRead {
  fn mark_as_read(conn: &PgConnection, post_read_form: &PostReadForm) -> Result<Self, Error> {
    use crate::schema::post_read::dsl::*;
    insert_into(post_read)
      .values(post_read_form)
      .get_result::<Self>(conn)
  }
  fn mark_as_unread(conn: &PgConnection, post_read_form: &PostReadForm)</