Filter summary based on ids

Closes  #573

Signed-off-by: Thomas Lauf <thomas.lauf@tngtech.com>

AUTHORS

@@ -122,3 +122,4 @@ Thanks to the following, who submitted detailed bug reports and excellent sugges
   Beshoy Girgis
   Sergey Zhuravlevich
   catexis
+  Aniket Meshram

ChangeLog

@@ -5,6 +5,8 @@
 - #494    Expand annotations in summary
           (thanks to catexis)
 - #566    Set table width dynamically to terminal width
+- #573    Filter summary based on ids
+          (thanks to Aniket Meshram)
 - #576    Fix quoting of tags in DOM output
 -         Add ':today' hint
 -         Refactor holidays/refresh script

doc/man1/timew-summary.1.adoc

@@ -6,10 +6,14 @@ timew-summary - display a time-tracking summary
 == SYNOPSIS
 [verse]
 *timew summary* [_<range>_] [_<tag>_**...**]
+*timew summary* [_<id>_**...**]
 
 == DESCRIPTION
 Displays a table summarizing tracked time, by default for the current day.
-Accepts date ranges, or range hints, and tags for filtering.
+Accepts date ranges (or range hints) and tags, or ids for filtering.
+
+When ids are given, date ranges are ignored.
+Specifying both, tags and ids, is an error.
 
 == HINTS
 Apart from range hints (see **timew-hints**(7)), the summary report adheres to the following hints:

src/commands/CmdSummary.cpp

@@ -25,6 +25,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include <IntervalFilterAllInRange.h>
+#include <IntervalFilterAllWithIds.h>
 #include <IntervalFilterAllWithTags.h>
 #include <IntervalFilterAndGroup.h>
 #include <SummaryTable.h>
@@ -53,16 +54,57 @@ int CmdSummary (
   Range default_range = {};
   expandIntervalHint (":" + report_hint, default_range);
 
-  auto range = cli.getRange (default_range);
+  auto ids = cli.getIds ();
   auto tags = cli.getTags ();
 
-  // Load the data.
+  if (! ids.empty () && ! tags.empty ())
+  {
+    throw std::string ("You cannot filter intervals by both, ids and tags.");
+  }
+
+  Range range;
+
+  std::vector <Interval> tracked;
+
+  if (! ids.empty ())
+  {
+    auto filtering = IntervalFilterAllWithIds (ids);
+    tracked = getTracked (database, rules, filtering);
+
+    if (tracked.size () != ids.size ())
+    {
+      for (auto& id: ids)
+      {
+        bool found = false;
+
+        for (auto& interval: tracked)
+        {
+          if (interval.id == id)
+          {
+            found = true;
+            break;
+          }
+        }
+        if (! found)
+        {
+          throw format ("ID '@{1}' does not correspond to any tracking.", id);
+        }
+      }
+    }
+
+    range = Range {tracked.begin ()->end, tracked.end ()->start};
+  }
+  else
+  {
+    range = cli.getRange (default_range);
+
     IntervalFilterAndGroup filtering ({
       std::make_shared <IntervalFilterAllInRange> (range),
       std::make_shared <IntervalFilterAllWithTags> (tags)
     });
 
-  auto tracked = getTracked (database, rules, filtering);
+    tracked = getTracked (database, rules, filtering);
+  }
 
   if (tracked.empty ())
   {

test/summary.t

@@ -174,6 +174,24 @@ W10 2017-03-09 Thu @4 Tag1 8:43:08 9:38:15 0:55:07 0:55:07
                                                    0:55:07
 """, out)
 
+    def test_with_id_filter(self):
+        """Summary should print data filtered by tag"""
+        self.t("track Tag1 2017-03-09T08:43:08 - 2017-03-09T09:38:15")
+        self.t("track Tag2 2017-03-09T11:38:39 - 2017-03-09T11:45:35")
+        self.t("track Tag2 Tag3 2017-03-09T11:46:21 - 2017-03-09T12:00:17")
+        self.t("track Tag2 Tag4 2017-03-09T12:01:49 - 2017-03-09T12:28:46")
+
+        code, out, err = self.t("summary @2 @4 :ids")
+
+        self.assertIn("""
+Wk  Date       Day ID Tags          Start      End    Time   Total
+--- ---------- --- -- ---------- -------- -------- ------- -------
+W10 2017-03-09 Thu @4 Tag1        8:43:08  9:38:15 0:55:07
+                   @2 Tag2, Tag3 11:46:21 12:00:17 0:13:56 1:09:03
+
+                                                           1:09:03
+""", out)
+
     def test_non_contiguous_with_tag_filter(self):
         """Summary should print data filtered by tag when tags are non-contiguous"""
         self.t("track Tag1 2017-03-09T08:43:08 - 2017-03-09T09:38:15")