add: post drafts

fix: allow question sender to view question

crates/core/src/database/drafts.rs

@@ -0,0 +1,185 @@
+use super::*;
+use crate::cache::Cache;
+use crate::model::moderation::AuditLogEntry;
+use crate::model::{Error, Result, auth::User, communities::PostDraft, permissions::FinePermission};
+use crate::{auto_method, execute, get, query_row, query_rows, params};
+
+#[cfg(feature = "sqlite")]
+use rusqlite::Row;
+
+#[cfg(feature = "postgres")]
+use tokio_postgres::Row;
+
+impl DataManager {
+    /// Get a [`PostDraft`] from an SQL row.
+    pub(crate) fn get_draft_from_row(
+        #[cfg(feature = "sqlite")] x: &Row<'_>,
+        #[cfg(feature = "postgres")] x: &Row,
+    ) -> PostDraft {
+        PostDraft {
+            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,
+        }
+    }
+
+    auto_method!(get_draft_by_id()@get_draft_from_row -> "SELECT * FROM drafts WHERE id = $1" --name="draft" --returns=PostDraft --cache-key-tmpl="atto.draft:{}");
+
+    /// Get all drafts from the given user (from most recent, paginated).
+    ///
+    /// # Arguments
+    /// * `id` - the ID of the user the requested drafts belong to
+    /// * `batch` - the limit of posts in each page
+    /// * `page` - the page number
+    pub async fn get_drafts_by_user(
+        &self,
+        id: usize,
+        batch: usize,
+        page: usize,
+    ) -> Result<Vec<PostDraft>> {
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        // ...
+        let res = query_rows!(
+            &conn,
+            "SELECT * FROM drafts WHERE owner = $1 ORDER BY created DESC LIMIT $2 OFFSET $3",
+            &[&(id as i64), &(batch as i64), &((page * batch) as i64)],
+            |x| { Self::get_draft_from_row(x) }
+        );
+
+        if res.is_err() {
+            return Err(Error::GeneralNotFound("draft".to_string()));
+        }
+
+        Ok(res.unwrap())
+    }
+
+    /// Get all drafts from the given user (from most recent).
+    ///
+    /// # Arguments
+    /// * `id` - the ID of the user the requested drafts belong to
+    pub async fn get_drafts_by_user_all(&self, id: usize) -> Result<Vec<PostDraft>> {
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        // ...
+        let res = query_rows!(
+            &conn,
+            "SELECT * FROM drafts WHERE owner = $1 ORDER BY created DESC",
+            &[&(id as i64)],
+            |x| { Self::get_draft_from_row(x) }
+        );
+
+        if res.is_err() {
+            return Err(Error::GeneralNotFound("draft".to_string()));
+        }
+
+        Ok(res.unwrap())
+    }
+
+    /// Create a new post draft in the database.
+    ///
+    /// # Arguments
+    /// * `data` - a mock [`PostDraft`] object to insert
+    pub async fn create_draft(&self, data: PostDraft) -> Result<usize> {
+        // check values
+        if data.content.len() < 2 {
+            return Err(Error::DataTooShort("content".to_string()));
+        } else if data.content.len() > 4096 {
+            return Err(Error::DataTooLong("content".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 drafts VALUES ($1, $2, $3, $4)",
+            params![
+                &(data.id as i64),
+                &(data.created as i64),
+                &data.content,
+                &(data.owner as i64),
+            ]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        Ok(data.id)
+    }
+
+    pub async fn delete_draft(&self, id: usize, user: User) -> Result<()> {
+        let y = self.get_draft_by_id(id).await?;
+
+        if user.id != y.owner {
+            if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                return Err(Error::NotAllowed);
+            } else {
+                self.create_audit_log_entry(AuditLogEntry::new(
+                    user.id,
+                    format!("invoked `delete_draft` with x value `{id}`"),
+                ))
+                .await?
+            }
+        }
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(&conn, "DELETE FROM drafts WHERE id = $1", &[&(id as i64)]);
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        self.2.remove(format!("atto.draft:{}", id)).await;
+
+        Ok(())
+    }
+
+    pub async fn update_draft_content(&self, id: usize, user: User, x: String) -> Result<()> {
+        let y = self.get_draft_by_id(id).await?;
+
+        if user.id != y.owner {
+            if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                return Err(Error::NotAllowed);
+            } else {
+                self.create_audit_log_entry(AuditLogEntry::new(
+                    user.id,
+                    format!("invoked `update_draft_content` with x value `{id}`"),
+                ))
+                .await?
+            }
+        }
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "UPDATE drafts SET content = $1 WHERE id = $2",
+            params![&x, &(id as i64)]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        Ok(())
+    }
+}