Add chat and id fields to Story struct

crates/teloxide-core/src/types/story.rs

@@ -1,5 +1,79 @@
 use serde::{Deserialize, Serialize};
 
-/// TBA 6.8: currently it holds no information
+use crate::types::{Chat, ChatKind, StoryId};
+
+/// This object represents a story.
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
-pub struct Story {}
+pub struct Story {
+    /// Unique identifier for the story in the chat.
+    pub id: StoryId,
+
+    /// Chat that posted the story.
+    pub chat: Chat,
+}
+
+impl Story {
+    /// Returns an URL that links to the story with it's id and chat username in
+    /// the form of `tg://resolve?domain=<…>&story=<…>`.
+    #[must_use]
+    pub fn url(&self) -> Option<url::Url> {
+        let username = match &self.chat.kind {
+            ChatKind::Public(c) => match &c.kind {
+                super::PublicChatKind::Channel(c) => c.username.as_ref(),
+                super::PublicChatKind::Group(_) => None,
+                super::PublicChatKind::Supergroup(g) => g.username.as_ref(),
+            },
+            ChatKind::Private(c) => c.username.as_ref(),
+        };
+        username.map(|username| {
+            reqwest::Url::parse(&format!("tg://resolve?domain={username}&story={}", self.id))
+                .unwrap()
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::types::{
+        Chat, ChatFullInfo, ChatId, ChatKind, ChatPublic, PublicChatKind, PublicChatSupergroup,
+        Story, StoryId,
+    };
+
+    #[test]
+    fn url_works() {
+        let story = Story {
+            chat: Chat {
+                id: ChatId(-1001389841361),
+                kind: ChatKind::Public(ChatPublic {
+                    title: Some("GNOME".to_owned()),
+                    kind: PublicChatKind::Supergroup(PublicChatSupergroup {
+                        username: Some("gnome_ru".to_owned()),
+                        active_usernames: None,
+                        is_forum: false,
+                        sticker_set_name: None,
+                        can_set_sticker_set: None,
+                        permissions: None,
+                        slow_mode_delay: None,
+                        linked_chat_id: None,
+                        location: None,
+                        join_to_send_messages: None,
+                        join_by_request: None,
+                    }),
+                    description: None,
+                    invite_link: None,
+                    has_protected_content: None,
+                }),
+                photo: None,
+                available_reactions: None,
+                pinned_message: None,
+                message_auto_delete_time: None,
+                has_hidden_members: false,
+                has_aggressive_anti_spam_enabled: false,
+                chat_full_info: ChatFullInfo::default(),
+            },
+            id: StoryId(420),
+        };
+
+        assert_eq!(story.url().unwrap(), "tg://resolve?domain=gnome_ru&story=420".parse().unwrap());
+    }
+}