add: polls backend

TODO: polls frontend

crates/app/src/routes/api/v1/mod.rs

@@ -19,7 +19,7 @@ use serde::Deserialize;
 use tetratto_core::model::{
     communities::{
         CommunityContext, CommunityJoinAccess, CommunityReadAccess, CommunityWriteAccess,
-        PostContext,
+        PollOption, PostContext,
     },
     communities_permissions::CommunityPermission,
     permissions::FinePermission,
@@ -113,6 +113,10 @@ pub fn routes() -> Router {
             "/posts/{id}/context",
             post(communities::posts::update_context_request),
         )
+        .route(
+            "/posts/{id}/poll_vote",
+            post(communities::posts::vote_request),
+        )
         // drafts
         .route("/drafts", post(communities::drafts::create_request))
         .route("/drafts/{id}", delete(communities::drafts::delete_request))
@@ -419,6 +423,14 @@ pub struct UpdateCommunityJoinAccess {
     pub access: CommunityJoinAccess,
 }
 
+#[derive(Deserialize)]
+pub struct CreatePostPoll {
+    pub option_a: String,
+    pub option_b: String,
+    pub option_c: String,
+    pub option_d: String,
+}
+
 #[derive(Deserialize)]
 pub struct CreatePost {
     pub content: String,
@@ -427,6 +439,8 @@ pub struct CreatePost {
     pub replying_to: Option<String>,
     #[serde(default)]
     pub answering: String,
+    #[serde(default)]
+    pub poll: Option<CreatePostPoll>,
 }
 
 #[derive(Deserialize)]
@@ -597,3 +611,8 @@ pub struct UpdateEmojiName {
 pub struct CreatePostDraft {
     pub content: String,
 }
+
+#[derive(Deserialize)]
+pub struct VoteInPoll {
+    pub option: PollOption,
+}