feat: Add db_post_from_url function

The commit adds the `db_post_from_url` function to the `conversion.rs` file. This function retrieves a post from the database based on a given URL. If the post is not found in the database, it fetches the post from the URL, saves it to the database, and returns the post. This change enhances the functionality of the codebase by providing a convenient way to retrieve and store posts.

src/lysand/conversion.rs

@@ -23,6 +23,23 @@ pub async fn option_content_format_text(opt: Option<ContentFormat>) -> Option<St
     None
 }
 
+pub async fn db_post_from_url(url: Url) -> anyhow::Result<entities::post::Model> {
+    if !url.domain().eq(&Some(LYSAND_DOMAIN.as_str())) {
+        return Err(anyhow!("not lysands domain"));
+    }
+    let str_url = url.to_string();
+    let post_res: Option<post::Model> = prelude::Post::find().filter(entities::post::Column::Url.eq(str_url.clone())).one(DB.get().unwrap()).await?;
+
+    if let Some(post) = post_res {
+        Ok(post)
+    } else {
+        let post = fetch_note_from_url(url.clone()).await?;
+        receive_lysand_note(post, "1".to_string()).await?;
+        let post_res: Option<post::Model> = prelude::Post::find().filter(entities::post::Column::Url.eq(str_url)).one(DB.get().unwrap()).await?;
+        Ok(post_res.unwrap())
+    }
+}
+
 pub async fn db_user_from_url(url: Url) -> anyhow::Result<entities::user::Model> {
     if !url.domain().eq(&Some(LYSAND_DOMAIN.as_str())) {
         return Err(anyhow!("not lysands domain"));
@@ -155,10 +172,10 @@ pub async fn receive_lysand_note(note: Note, db_id: String) -> anyhow::Result<cr
             super::objects::VisibilityType::Unlisted => "unlisted",
         };
         if let Some(obj) = quote {
-            println!("Quoting: {}", obj.dereference(&data.to_request_data()).await.unwrap().url);
+            println!("Quoting: {}", db_post_from_url(note.replies_to.unwrap()).await?.url);
         }
         if let Some(obj) = reply {
-            println!("Replying to: {}", obj.dereference(&data.to_request_data()).await.unwrap().url);
+            println!("Replying to: {}", db_post_from_url(note.quotes.unwrap()).await?.url);
         }
         let post = entities::post::ActiveModel {
             id: Set(note.id.to_string()),