Carry conversations into new sessions with a visible summary

- Bots get continue_in_new_session: the bot writes a title and summary, the session closes for good (read-only) and the new one opens with the summary as a "Carried over from the last session" message that links back to the old session. - Continue in new session (conversation menu, sessions modal) and the automatic rollover at the session length do the same; New session now starts a fresh, unlinked session. - Session length is an app setting in Settings > General. - ?session_id= opens a session; a carried-over one shows a bar linking to where the conversation went on instead of the composer. - The thread can open the previous session above the current one (shown only, never in the prompt), and replies get search_past_sessions and read_past_session. - Sessions are named from their opening messages, not their latest, and a carried summary is labelled as the earlier session's. Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-26 05:35:52 +01:00
parent 1e6833b5d8
commit cc109bc361
64 changed files with 2074 additions and 128 deletions
@@ -0,0 +1,88 @@
+import { AppData } from "@/src/data/app-data";
+
+/**
+ * Which earlier sessions are read: one user's conversation with one bot,
+ * in its own chat or one workspace, without the session being answered.
+ */
+export type PastSessionScope = {
+    user_id: number | string;
+    bot_id: number | string;
+    workspace_id?: number | string | null;
+    /**
+     * The session the bot is answering in: its messages are already in
+     * the prompt.
+     */
+    current_session_id: number | string;
+};
+
+export type SearchPastSessionsParams = PastSessionScope & {
+    /**
+     * Words to find in the messages; every one must be there.
+     */
+    query: string;
+    /**
+     * Only messages older than this one (paging).
+     */
+    before_id?: number | string | null;
+    limit?: number;
+    snippet_chars?: number;
+};
+
+/**
+ * Finds messages of the conversation's earlier sessions, newest first,
+ * with their session's title and the text around the first word's match
+ * (cut in SQL). Every word must match, in any case; `%` and `_` match
+ * only themselves.
+ */
+export default function searchPastSessionsSql({
+    user_id,
+    bot_id,
+    workspace_id,
+    current_session_id,
+    query,
+    before_id,
+    limit = AppData.PastSessionSearchLimit,
+    snippet_chars = AppData.PastSessionSnippetChars,
+}: SearchPastSessionsParams) {
+    const words = query.trim().split(/\s+/).filter(Boolean).slice(0, 8);
+    const first = words[0] || "";
+    const lead = Math.floor(snippet_chars / 3);
+
+    const values: (string | number | null)[] = [
+        first,
+        lead,
+        snippet_chars,
+        Number(user_id),
+        Number(bot_id),
+        workspace_id ? Number(workspace_id) : null,
+        Number(current_session_id),
+    ];
+    const where = [
+        `s.user_id = ?`,
+        `s.bot_id = ?`,
+        `s.workspace_id IS ?`,
+        `s.id != ?`,
+    ];
+
+    for (const word of words) {
+        where.push(`m.text LIKE ? ESCAPE '\\'`);
+        values.push(`%${word.replace(/[\\%_]/g, (c) => `\\${c}`)}%`);
+    }
+
+    if (before_id) {
+        where.push(`m.id < ?`);
+        values.push(Number(before_id));
+    }
+
+    values.push(Math.min(Math.max(Math.floor(limit) || 1, 1), 100));
+
+    return {
+        sql: `SELECT m.id, m.session_id, m.author, m.created_at, s.title AS session_title,
+                substr(m.text, max(1, instr(lower(m.text), lower(?)) - ?), ?) AS snippet
+            FROM bot_messages m JOIN bot_sessions s ON s.id = m.session_id
+            WHERE ${where.join(" AND ")}
+            ORDER BY m.id DESC
+            LIMIT ?`,
+        values,
+    };
+}