add: communities list page

TODO(ui): implement community creation, community viewing, community posting
TODO(ui): implement profile following, followers, and posts feed

crates/core/src/database/communities.rs

@@ -0,0 +1,101 @@
+use super::*;
+use crate::cache::Cache;
+use crate::model::communities::{CommunityContext, CommunityMembership};
+use crate::model::communities_permissions::CommunityPermission;
+use crate::model::{
+    Error, Result,
+    auth::User,
+    communities::Community,
+    communities::{CommunityReadAccess, CommunityWriteAccess},
+    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 [`Community`] from an SQL row.
+    pub(crate) fn get_community_from_row(
+        #[cfg(feature = "sqlite")] x: &Row<'_>,
+        #[cfg(feature = "postgres")] x: &Row,
+    ) -> Community {
+        Community {
+            id: get!(x->0(i64)) as usize,
+            created: get!(x->1(i64)) as usize,
+            title: get!(x->2(String)),
+            context: serde_json::from_str(&get!(x->3(String))).unwrap(),
+            owner: get!(x->4(i64)) as usize,
+            read_access: serde_json::from_str(&get!(x->5(String))).unwrap(),
+            write_access: serde_json::from_str(&get!(x->6(String))).unwrap(),
+            // likes
+            likes: get!(x->6(i64)) as isize,
+            dislikes: get!(x->7(i64)) as isize,
+        }
+    }
+
+    auto_method!(get_page_by_id()@get_community_from_row -> "SELECT * FROM journals WHERE id = $1" --name="journal" --returns=Community --cache-key-tmpl="atto.journal:{}");
+
+    /// Create a new journal page in the database.
+    ///
+    /// # Arguments
+    /// * `data` - a mock [`Journal`] object to insert
+    pub async fn create_community(&self, data: Community) -> Result<()> {
+        // check values
+        if data.title.len() < 2 {
+            return Err(Error::DataTooShort("title".to_string()));
+        } else if data.title.len() > 32 {
+            return Err(Error::DataTooLong("title".to_string()));
+        }
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "INSERT INTO journals VALUES ($1, $2, $3, $4, $5, $6, $7)",
+            &[
+                &data.id.to_string().as_str(),
+                &data.created.to_string().as_str(),
+                &data.title.as_str(),
+                &serde_json::to_string(&data.context).unwrap().as_str(),
+                &data.owner.to_string().as_str(),
+                &serde_json::to_string(&data.read_access).unwrap().as_str(),
+                &serde_json::to_string(&data.write_access).unwrap().as_str(),
+            ]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        // add journal page owner as admin
+        self.create_membership(CommunityMembership::new(
+            data.owner,
+            data.id,
+            CommunityPermission::ADMINISTRATOR,
+        ))
+        .await
+        .unwrap();
+
+        // return
+        Ok(())
+    }
+
+    auto_method!(delete_community()@get_page_by_id:MANAGE_JOURNAL_PAGES -> "DELETE journals pages WHERE id = $1" --cache-key-tmpl="atto.journal:{}");
+    auto_method!(update_community_title(String)@get_page_by_id:MANAGE_JOURNAL_PAGES -> "UPDATE journals SET title = $1 WHERE id = $2" --cache-key-tmpl="atto.journal:{}");
+    auto_method!(update_community_context(CommunityContext)@get_page_by_id:MANAGE_JOURNAL_PAGES -> "UPDATE journals SET prompt = $1 WHERE id = $2" --serde --cache-key-tmpl="atto.journal:{}");
+    auto_method!(update_community_read_access(CommunityReadAccess)@get_page_by_id:MANAGE_JOURNAL_PAGES -> "UPDATE journals SET read_access = $1 WHERE id = $2" --serde --cache-key-tmpl="atto.journal:{}");
+    auto_method!(update_community_write_access(CommunityWriteAccess)@get_page_by_id:MANAGE_JOURNAL_PAGES -> "UPDATE journals SET write_access = $1 WHERE id = $2" --serde --cache-key-tmpl="atto.journal:{}");
+
+    auto_method!(incr_page_likes() -> "UPDATE journals SET likes = likes + 1 WHERE id = $1" --cache-key-tmpl="atto.journal:{}"  --incr);
+    auto_method!(incr_page_dislikes() -> "UPDATE journals SET likes = dislikes + 1 WHERE id = $1" --cache-key-tmpl="atto.journal:{}" --incr);
+    auto_method!(decr_page_likes() -> "UPDATE journals SET likes = likes - 1 WHERE id = $1" --cache-key-tmpl="atto.journal:{}" --decr);
+    auto_method!(decr_page_dislikes() -> "UPDATE journals SET likes = dislikes - 1 WHERE id = $1" --cache-key-tmpl="atto.journal:{}" --decr);
+}