#1750 TB feature/statistics issue

Change time to read book formula to: ((total_read_time / read_pages) * (all_pages - current_page))

frontend/apps/reader/modules/readerfooter.lua

@@ -230,7 +230,8 @@ function ReaderFooter:getProgressPercentage()
 end
 
 function ReaderFooter:getBookTimeToRead()
-    return self:getDataFromStatistics("TB: ", self.pages)
+    local current_page = self.view.document:getCurrentPage()
+    return self:getDataFromStatistics("TB: ", self.pages - current_page)
 end
 
 function ReaderFooter:getChapterTimeToRead()

plugins/statistics.koplugin/main.lua

@@ -236,10 +236,11 @@ function ReaderStatistics:updateCurrentStat()
     end
 
     local read_pages = util.tablelength(self.data.performance_in_pages)
+    local current_page = self.ui.document:getCurrentPage()
     local average_time_per_page = self.data.total_time_in_sec / read_pages
 
     table.insert(stats, { text = _("Current period"), mandatory = util.secondsToClock(self.current_period, false) })
-    table.insert(stats, { text = _("Time to read"), mandatory = util.secondsToClock(self.data.pages * average_time_per_page, false) })
+    table.insert(stats, { text = _("Time to read"), mandatory = util.secondsToClock((self.data.pages - current_page) * average_time_per_page, false) })
     table.insert(stats, { text = _("Total time"), mandatory = util.secondsToClock(self.data.total_time_in_sec, false) })
     table.insert(stats, { text = _("Total highlights"), mandatory = self.data.highlights })
     table.insert(stats, { text = _("Total notes"), mandatory = self.data.notes })