add: user follows, user blocks, ip bans

TODO: implement user following API endpoints
TODO: implement user blocking API endpoints
TODO: don't allow blocked users to interact with the users who blocked them

crates/core/src/database/posts.rs

@@ -0,0 +1,106 @@
+use super::*;
+use crate::cache::Cache;
+use crate::model::journal::JournalPostContext;
+use crate::model::{
+    Error, Result, auth::User, journal::JournalPost, journal::JournalWriteAccess,
+    permissions::FinePermission,
+};
+use crate::{auto_method, execute, get, query_row};
+
+#[cfg(feature = "sqlite")]
+use rusqlite::Row;
+
+#[cfg(feature = "postgres")]
+use tokio_postgres::Row;
+
+impl DataManager {
+    /// Get a [`JournalEntry`] from an SQL row.
+    pub(crate) fn get_post_from_row(
+        #[cfg(feature = "sqlite")] x: &Row<'_>,
+        #[cfg(feature = "postgres")] x: &Row,
+    ) -> JournalPost {
+        JournalPost {
+            id: get!(x->0(i64)) as usize,
+            created: get!(x->1(i64)) as usize,
+            content: get!(x->2(String)),
+            owner: get!(x->3(i64)) as usize,
+            journal: get!(x->4(i64)) as usize,
+            context: serde_json::from_str(&get!(x->5(String))).unwrap(),
+            // likes
+            likes: get!(x->6(i64)) as isize,
+            dislikes: get!(x->7(i64)) as isize,
+        }
+    }
+
+    auto_method!(get_post_by_id()@get_post_from_row -> "SELECT * FROM entries WHERE id = $1" --name="journal entry" --returns=JournalPost --cache-key-tmpl="atto.entry:{}");
+
+    /// Create a new journal entry in the database.
+    ///
+    /// # Arguments
+    /// * `data` - a mock [`JournalEntry`] object to insert
+    pub async fn create_entry(&self, data: JournalPost) -> Result<()> {
+        // check values
+        if data.content.len() < 2 {
+            return Err(Error::DataTooShort("content".to_string()));
+        } else if data.content.len() > 4096 {
+            return Err(Error::DataTooLong("username".to_string()));
+        }
+
+        // check permission in page
+        let page = match self.get_page_by_id(data.journal).await {
+            Ok(p) => p,
+            Err(e) => return Err(e),
+        };
+
+        match page.write_access {
+            JournalWriteAccess::Owner => {
+                if data.owner != page.owner {
+                    return Err(Error::NotAllowed);
+                }
+            }
+            JournalWriteAccess::Joined => {
+                if let Err(_) = self
+                    .get_membership_by_owner_journal(data.owner, page.id)
+                    .await
+                {
+                    return Err(Error::NotAllowed);
+                }
+            }
+            _ => (),
+        };
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "INSERT INTO entries VALUES ($1, $2, $3, $4, $5",
+            &[
+                &data.id.to_string().as_str(),
+                &data.created.to_string().as_str(),
+                &data.content.as_str(),
+                &data.owner.to_string().as_str(),
+                &data.journal.to_string().as_str(),
+                &serde_json::to_string(&data.context).unwrap().as_str(),
+            ]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        Ok(())
+    }
+
+    auto_method!(delete_entry()@get_post_by_id:MANAGE_JOURNAL_ENTRIES -> "DELETE FROM entries WHERE id = $1" --cache-key-tmpl="atto.entry:{}");
+    auto_method!(update_post_content(String)@get_post_by_id:MANAGE_JOURNAL_ENTRIES -> "UPDATE entries SET content = $1 WHERE id = $2" --cache-key-tmpl="atto.entry:{}");
+    auto_method!(update_post_context(JournalPostContext)@get_post_by_id:MANAGE_JOURNAL_ENTRIES -> "UPDATE entries SET context = $1 WHERE id = $2" --serde --cache-key-tmpl="atto.entry:{}");
+
+    auto_method!(incr_post_likes() -> "UPDATE entries SET likes = likes + 1 WHERE id = $1" --cache-key-tmpl="atto.entry:{}" --incr);
+    auto_method!(incr_post_dislikes() -> "UPDATE entries SET likes = dislikes + 1 WHERE id = $1" --cache-key-tmpl="atto.entry:{}" --incr);
+    auto_method!(decr_post_likes() -> "UPDATE entries SET likes = likes - 1 WHERE id = $1" --cache-key-tmpl="atto.entry:{}" --decr);
+    auto_method!(decr_post_dislikes() -> "UPDATE entries SET likes = dislikes - 1 WHERE id = $1" --cache-key-tmpl="atto.entry:{}" --decr);
+}