From 88b4fdd50ee162d8734843f965d657a522a6fc62 Mon Sep 17 00:00:00 2001
From: John Hernandez <129467592+H3rnand3zzz@users.noreply.github.com>
Date: Sun, 29 Oct 2023 13:29:51 +0100
Subject: [PATCH] Add database borders check

Stop fetching message from DB when profanity reached start or end of the history
with the user. This allows to save resources on page up/down
when ceiling or bottom accordingly are reached.
---
 src/ui/window.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/ui/window.c b/src/ui/window.c
index 730859d2..808c26bc 100644
--- a/src/ui/window.c
+++ b/src/ui/window.c
@@ -75,6 +75,9 @@ static void _win_print_internal(ProfWin* window, const char* show_char, int pad_
                                 int flags, theme_item_t theme_item, const char* const from, const char* const message, DeliveryReceipt* receipt);
 static void _win_print_wrapped(WINDOW* win, const char* const message, size_t indent, int pad_indent);
 
+static gboolean _reached_top_of_database = FALSE;
+static gboolean _reached_bottom_of_database = FALSE;
+
 int
 win_roster_cols(void)
 {
@@ -622,6 +625,7 @@ win_free(ProfWin* window)
 void
 win_page_up(ProfWin* window)
 {
+    _reached_bottom_of_database = FALSE;
     int rows = getmaxy(stdscr);
     int y = getcury(window->layout->win);
     int page_space = rows - 4;
@@ -635,7 +639,11 @@ win_page_up(ProfWin* window)
 
         // Don't do anything if still fetching mam messages
         if (first_entry && !(first_entry->theme_item == THEME_ROOMINFO && g_strcmp0(first_entry->message, LOADING_MESSAGE) == 0)) {
-            if (!chatwin_db_history(chatwin, NULL, NULL, TRUE) && prefs_get_boolean(PREF_MAM)) {
+            if (!_reached_top_of_database) {
+                _reached_top_of_database = !chatwin_db_history(chatwin, NULL, NULL, TRUE);
+            }
+
+            if (_reached_top_of_database && prefs_get_boolean(PREF_MAM)) {
                 win_print_loading_history(window);
                 iq_mam_request_older(chatwin);
             }
@@ -658,6 +666,7 @@ win_page_up(ProfWin* window)
 void
 win_page_down(ProfWin* window)
 {
+    _reached_top_of_database = FALSE;
     int rows = getmaxy(stdscr);
     int y = getcury(window->layout->win);
     int page_space = rows - 4;
@@ -673,7 +682,9 @@ win_page_down(ProfWin* window)
             GDateTime* now = g_date_time_new_now_local();
             gchar* end = g_date_time_format_iso8601(now);
             // end is free'd inside
-            chatwin_db_history((ProfChatWin*)window, start, end, FALSE);
+            if (!_reached_bottom_of_database && !chatwin_db_history((ProfChatWin*)window, start, end, FALSE)) {
+                _reached_bottom_of_database = TRUE;
+            }
 
             g_date_time_unref(now);
         }