add: community topic endpoints

crates/core/src/model/communities.rs

@@ -1,3 +1,5 @@
+use std::collections::HashMap;
+
 use serde::{Deserialize, Serialize};
 use tetratto_shared::{snow::Snowflake, unix_epoch_timestamp};
 use super::communities_permissions::CommunityPermission;
@@ -19,14 +21,20 @@ pub struct Community {
     pub write_access: CommunityWriteAccess,
     /// Who can join the community.
     pub join_access: CommunityJoinAccess,
-    // likes
     pub likes: isize,
     pub dislikes: isize,
-    // ...
     pub member_count: usize,
     pub is_forge: bool,
     pub post_count: usize,
     pub is_forum: bool,
+    /// The topics of a community if the community has `is_forum` enabled.
+    ///
+    /// Since topics are given a unique ID (the key of the hashmap), a removal of a topic
+    /// should be done through a specific DELETE endpoint which ALSO deletes all posts
+    /// within the topic.
+    ///
+    /// Communities should be limited to 10 topics per community.
+    pub topics: HashMap<usize, ForumTopic>,
 }
 
 impl Community {
@@ -50,6 +58,7 @@ impl Community {
             is_forge: false,
             post_count: 0,
             is_forum: false,
+            topics: HashMap::new(),
         }
     }
 
@@ -71,6 +80,7 @@ impl Community {
             is_forge: false,
             post_count: 0,
             is_forum: false,
+            topics: HashMap::new(),
         }
     }
 }
@@ -521,10 +531,25 @@ impl PollVote {
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct ForumTopic {
-    pub id: usize,
-    pub created: usize,
-    pub owner: usize,
-    pub community: usize,
     pub title: String,
     pub description: String,
+    pub color: String,
+}
+
+impl ForumTopic {
+    /// Create a new [`ForumTopic`].
+    ///
+    /// # Returns
+    /// * ID for [`Community`] hashmap
+    /// * [`ForumTopic`]
+    pub fn new(title: String, description: String, color: String) -> (usize, Self) {
+        (
+            Snowflake::new().to_string().parse::<usize>().unwrap(),
+            Self {
+                title,
+                description,
+                color,
+            },
+        )
+    }
 }