From b9127b0e4ac187074a5c99fa4d29dc6ac726e3ff Mon Sep 17 00:00:00 2001
From: felix <felix@seconddrawer.com.au>
Date: Tue, 17 May 2011 08:57:50 +0700
Subject: basic sqlite functions

---
 lib/timetrackr/sqlite.rb | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 lib/timetrackr/sqlite.rb

diff --git a/lib/timetrackr/sqlite.rb b/lib/timetrackr/sqlite.rb
new file mode 100644
index 0000000..d51f699
--- /dev/null
+++ b/lib/timetrackr/sqlite.rb
@@ -0,0 +1,65 @@
+class SqliteTimeTrackr < TimeTrackr
+
+  def initialize(path)
+    @log_path = path
+    if !File.exist? @log_path
+      @db = SQLite3::Database.new(@log_path)
+      sql_events = "CREATE TABLE events (
+      id INTEGER AUTO_INCREMENT PRIMARY KEY,
+      task VARCHAR(50),
+      start DATETIME,
+      stop DATETIME,
+      notes VARCHAR(255));"
+      @db.execute(sql_events)
+    else
+      @db = SQLite3::Database.open(@log_path)
+    end
+    @db.type_translation = true
+    puts "Using DB file '#{@log_path}'" if $verbose
+  end
+
+  def current
+    sql = "SELECT DISTINCT task FROM events WHERE stop IS NULL;"
+    @db.execute(sql).collect{|row|
+      row.first
+    }
+  end
+
+  def tasks
+    sql = "SELECT DISTINCT task FROM events;"
+    @db.execute(sql).collect{ |row|
+      row.first
+    }
+  end
+
+  def start(task, notes)
+    sql = "SELECT id FROM events WHERE task = :task AND stop IS NULL;"
+    exists = @db.get_first_value(sql, 'task' => task)
+    if !exists
+      sql = "INSERT INTO events (task,start,notes) VALUES (:task,:start,:notes);"
+      @db.execute(sql,'task' => task, 'start' => Time.now.to_s, 'notes' => notes)
+    end
+  end
+
+  def stop(task)
+    sql = "SELECT id FROM events WHERE task = :task AND stop IS NULL;"
+    exists = @db.get_first_value(sql, 'task' => task).first
+    if exists
+      sql = "UPDATE events SET stop = :stop WHERE id = :current;"
+      @db.execute(sql, 'current' => exists, 'stop' => Time.now.to_s)
+    end
+  end
+
+  def history(task, p_begin=nil, p_end=nil)
+    sql = "SELECT start, stop, notes FROM events WHERE task = :task ORDER BY start;"
+    @db.execute(sql,'task' => task).collect{ |row|
+      Period.new(task,row[0],row[1],row[2])
+    }
+  end
+
+  def clear(task)
+    sql = "DELETE FROM events WHERE task = :task;"
+    @db.execute(sql, 'task' => task)
+  end
+
+end
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