Add a save reminder to notifications panel

internal/notify/notifications.lua

@@ -14,6 +14,8 @@ local buildings = df.global.world.buildings
 local caravans = df.global.plotinfo.caravans
 local units = df.global.world.units
 
+SaveDur = 0
+
 function for_iter(vec, match_fn, action_fn, reverse)
     local offset = type(vec) == 'table' and 1 or 0
     local idx1 = reverse and #vec-1+offset or offset
@@ -524,6 +526,25 @@ NOTIFICATIONS_BY_IDX = {
         adv_fn=curry(get_bar, get_blood, get_max_blood, "Blood", COLOR_RED),
         on_click=nil,
     },
+    {
+        name='autosave',
+        desc='Shows a reminder to save now and then.',
+        default=true,
+        dwarf_fn=function ()
+            local minsSinceSave = dfhack.persistent.getUnsavedSeconds()//60
+            if minsSinceSave < 15 then
+                return nil
+            end
+            return "Last save: ".. (dfhack.formatInt(minsSinceSave)) ..' mins ago'
+        end,
+        on_click=function ()
+            local minsSinceSave = dfhack.persistent.getUnsavedSeconds()//60
+            local message = 'It has been ' .. (dfhack.formatInt(minsSinceSave)) .. ' mins since your last save. \n\nWould you like to save now? ' ..
+            '(Note: You can still close this reminder and save manually)'
+            dlg.showYesNoPrompt('Save now?', message, nil, function()
+                dfhack.run_script('quicksave') end)
+        end,
+    },
 }
 
 NOTIFICATIONS_BY_NAME = {}