From af2f09ea4cbb97d3ee91e30bb58e85508989d63a Mon Sep 17 00:00:00 2001
From: clarkzjw <i@jinwei.me>
Date: Wed, 26 Jul 2023 12:37:38 -0700
Subject: add example from
 https://github.com/LemmyNet/activitypub-federation-rust

---
 fedi/live_federation/activities/create_post.rs | 69 ++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 fedi/live_federation/activities/create_post.rs

(limited to 'fedi/live_federation/activities/create_post.rs')

diff --git a/fedi/live_federation/activities/create_post.rs b/fedi/live_federation/activities/create_post.rs
new file mode 100644
index 0000000..66928a6
--- /dev/null
+++ b/fedi/live_federation/activities/create_post.rs
@@ -0,0 +1,69 @@
+use crate::{
+    database::DatabaseHandle,
+    error::Error,
+    objects::{person::DbUser, post::Note},
+    utils::generate_object_id,
+    DbPost,
+};
+use activitypub_federation::{
+    activity_queue::send_activity,
+    config::Data,
+    fetch::object_id::ObjectId,
+    kinds::activity::CreateType,
+    protocol::{context::WithContext, helpers::deserialize_one_or_many},
+    traits::{ActivityHandler, Object},
+};
+use serde::{Deserialize, Serialize};
+use url::Url;
+
+#[derive(Deserialize, Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct CreatePost {
+    pub(crate) actor: ObjectId<DbUser>,
+    #[serde(deserialize_with = "deserialize_one_or_many")]
+    pub(crate) to: Vec<Url>,
+    pub(crate) object: Note,
+    #[serde(rename = "type")]
+    pub(crate) kind: CreateType,
+    pub(crate) id: Url,
+}
+
+impl CreatePost {
+    pub async fn send(note: Note, inbox: Url, data: &Data<DatabaseHandle>) -> Result<(), Error> {
+        print!("Sending reply to {}", &note.attributed_to);
+        let create = CreatePost {
+            actor: note.attributed_to.clone(),
+            to: note.to.clone(),
+            object: note,
+            kind: CreateType::Create,
+            id: generate_object_id(data.domain())?,
+        };
+        let create_with_context = WithContext::new_default(create);
+        send_activity(create_with_context, &data.local_user(), vec![inbox], data).await?;
+        Ok(())
+    }
+}
+
+#[async_trait::async_trait]
+impl ActivityHandler for CreatePost {
+    type DataType = DatabaseHandle;
+    type Error = crate::error::Error;
+
+    fn id(&self) -> &Url {
+        &self.id
+    }
+
+    fn actor(&self) -> &Url {
+        self.actor.inner()
+    }
+
+    async fn verify(&self, data: &Data<Self::DataType>) -> Result<(), Self::Error> {
+        DbPost::verify(&self.object, &self.id, data).await?;
+        Ok(())
+    }
+
+    async fn receive(self, data: &Data<Self::DataType>) -> Result<(), Self::Error> {
+        DbPost::from_json(self.object, data).await?;
+        Ok(())
+    }
+}
-- 
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