From bedaa624a3562e6a0c7a5d1493f438c36254e730 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Mon, 6 Jun 2016 23:01:51 -0400
Subject: [PATCH] CmdLengthen: Implemented 'lengthen' command

---
 src/commands/CMakeLists.txt  |  1 +
 src/commands/CmdLengthen.cpp | 85 ++++++++++++++++++++++++++++++++++++
 src/commands/commands.h      |  1 +
 src/init.cpp                 |  2 +
 4 files changed, 89 insertions(+)
 create mode 100644 src/commands/CmdLengthen.cpp

diff --git a/src/commands/CMakeLists.txt b/src/commands/CMakeLists.txt
index 9cd3b1b5..40d5d993 100644
--- a/src/commands/CMakeLists.txt
+++ b/src/commands/CMakeLists.txt
@@ -17,6 +17,7 @@ set (commands_SRCS CmdCancel.cpp
                    CmdGaps.cpp
                    CmdHelp.cpp
                    CmdImport.cpp
+                   CmdLengthen.cpp
                    CmdReport.cpp
                    CmdStart.cpp
                    CmdStop.cpp
diff --git a/src/commands/CmdLengthen.cpp b/src/commands/CmdLengthen.cpp
new file mode 100644
index 00000000..0926a914
--- /dev/null
+++ b/src/commands/CmdLengthen.cpp
@@ -0,0 +1,85 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 - 2016, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <Duration.h>
+#include <commands.h>
+#include <timew.h>
+#include <iostream>
+#include <stdlib.h>
+
+////////////////////////////////////////////////////////////////////////////////
+int CmdLengthen (
+  const CLI& cli,
+  Rules& rules,
+  Database& database)
+{
+  // Gather IDs and TAGs.
+  std::vector <int> ids;
+  std::string delta;
+  for (auto& arg : cli._args)
+  {
+    if (arg.hasTag ("ID"))
+      ids.push_back (strtol (arg.attribute ("value").c_str (), NULL, 10));
+
+    if (arg.hasTag ("FILTER") &&
+        arg._lextype == Lexer::Type::duration)
+      delta = arg.attribute ("raw");
+  }
+
+  // TODO Support :adjust
+
+  // Load the data.
+  // Note: There is no filter.
+  Interval filter;
+  auto tracked = getTracked (database, rules, filter);
+
+  // Apply tags to ids.
+  for (auto& id : ids)
+  {
+    if (id <= static_cast <int> (tracked.size ()))
+    {
+      // Note: It's okay to subtract a one-based number from a zero-based index.
+      Interval i = tracked[tracked.size () - id];
+      if (! i.range.is_open ())
+      {
+        Duration dur (delta);
+        i.range.end += dur.toTime_t ();
+
+        database.modifyInterval (tracked[tracked.size () - id], i);
+
+        // Feedback.
+        std::cout << "Lengthened @" << id << " by " << dur.formatHours () << '\n';
+      }
+      else
+        std::cout << "Cannot lengthen open interval @" << id << '\n';
+    }
+  }
+
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/commands/commands.h b/src/commands/commands.h
index 310112b5..a4077d11 100644
--- a/src/commands/commands.h
+++ b/src/commands/commands.h
@@ -44,6 +44,7 @@ int CmdGaps          (const CLI&, Rules&, Database&                   );
 int CmdHelpUsage     (                                                );
 int CmdHelp          (const CLI&                                      );
 int CmdImport        (                                                );
+int CmdLengthen      (const CLI&, Rules&, Database&                   );
 int CmdReport        (const CLI&, Rules&, Database&, const Extensions&);
 int CmdShorten       (const CLI&, Rules&, Database&                   );
 int CmdShow          (            Rules&                              );
diff --git a/src/init.cpp b/src/init.cpp
index b07fc166..d226e7df 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -67,6 +67,7 @@ void initializeEntities (CLI& cli)
   cli.entity ("command", "gaps");
   cli.entity ("command", "help");
   cli.entity ("command", "import");
+  cli.entity ("command", "lengthen");
   cli.entity ("command", "report");
   cli.entity ("command", "shorten");
   cli.entity ("command", "show");
@@ -258,6 +259,7 @@ int dispatchCommand (
     else if (command == "gaps")        status = CmdGaps          (cli, rules, database            );
     else if (command == "help")        status = CmdHelp          (cli                             );
     else if (command == "import")      status = CmdImport        (                                );
+    else if (command == "lengthen")    status = CmdLengthen      (cli, rules, database            );
     else if (command == "month")       status = CmdChartMonth    (cli, rules, database            );
     else if (command == "report")      status = CmdReport        (cli, rules, database, extensions);
     else if (command == "shorten")     status = CmdShorten       (cli, rules, database            );