huskies: merge 670_refactor_hoist_chat_history_persistence_into_a_shared_module_replaces_658

server/src/chat/transport/slack/history.rs

@@ -1,40 +1,21 @@
 //! Slack conversation history persistence.
 
-use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::sync::Arc;
 use tokio::sync::Mutex as TokioMutex;
 
+use crate::chat::history::{load_chat_history, save_chat_history};
 use crate::chat::transport::matrix::RoomConversation;
-use crate::slog;
 
 /// Per-channel conversation history, keyed by channel ID.
 pub type SlackConversationHistory = Arc<TokioMutex<HashMap<String, RoomConversation>>>;
 
-/// On-disk format for persisted Slack conversation history.
-#[derive(Serialize, Deserialize)]
-struct PersistedSlackHistory {
-    channels: HashMap<String, RoomConversation>,
-}
-
 /// Path to the persisted Slack conversation history file.
 const SLACK_HISTORY_FILE: &str = ".huskies/slack_history.json";
 
 /// Load Slack conversation history from disk.
 pub fn load_slack_history(project_root: &std::path::Path) -> HashMap<String, RoomConversation> {
-    let path = project_root.join(SLACK_HISTORY_FILE);
-    let data = match std::fs::read_to_string(&path) {
-        Ok(d) => d,
-        Err(_) => return HashMap::new(),
-    };
-    let persisted: PersistedSlackHistory = match serde_json::from_str(&data) {
-        Ok(p) => p,
-        Err(e) => {
-            slog!("[slack] Failed to parse history file: {e}");
-            return HashMap::new();
-        }
-    };
-    persisted.channels
+    load_chat_history(project_root, SLACK_HISTORY_FILE, "slack")
 }
 
 /// Save Slack conversation history to disk.
@@ -42,18 +23,7 @@ pub(super) fn save_slack_history(
     project_root: &std::path::Path,
     history: &HashMap<String, RoomConversation>,
 ) {
-    let persisted = PersistedSlackHistory {
-        channels: history.clone(),
-    };
-    let path = project_root.join(SLACK_HISTORY_FILE);
-    match serde_json::to_string_pretty(&persisted) {
-        Ok(json) => {
-            if let Err(e) = std::fs::write(&path, json) {
-                slog!("[slack] Failed to write history file: {e}");
-            }
-        }
-        Err(e) => slog!("[slack] Failed to serialise history: {e}"),
-    }
+    save_chat_history(project_root, SLACK_HISTORY_FILE, "slack", history);
 }
 
 // ── Tests ───────────────────────────────────────────────────────────────