A Simple ToDo App Using PHP and MongoDB

mongo.todo.php

#!/usr/bin/env php
<?php

	error_reporting( E_ERROR | E_PARSE );

	class ToDo {

		protected $argv = array();

		public function __construct ( $argv ) {
			$this->argv = $argv;
			try {
				$this->mongo_connection = $mongo = new Mongo();
				$this->mongo_db = $this->mongo_connection->todo;
			}
			catch ( Exception $e ) {
				throw new Exception ( "Oops! Error connecting to MongoDB: " . $e->getMessage() );
			}
		}

		protected function help ( $error = null ) {
			if( ! is_null( $error ) ) {
				print "$error\n";
				print "\n";
			}

			$out = <<<EOF
usage: {$this->argv[0]} <method>

== Methods ==

<none>             list all incomplete tasks sorted by priority then chronologically
help               show this help
next               list all incomplete tasks that are high priority
done               list all complete tasks chronologically
high <argument>    add high priority task called <argument>
low <argument>     add low priority task called <argument>
finish <argument>  complete task called <argument>
dont <argument>    delete unfinished task called <argument>

EOF;
			print $out;
		}

		public function run () {
			try {
				if ( 1 >= count( $this->argv ) ) {
					$this->show(
						array( "complete" => false ),
						array( "level" => 1, "added" => 1 )
					);
				}
				else {
					$argument = strtolower( $this->argv[1] );
					if ( "help" == $argument )
						$this->help();
					else if ( "next" == $argument )
						$this->show(
							array( "level" => "high", "complete" => false ),
							array( "level" => 1, "added" => 1 )
						);
					else if ( "done" == $argument )
						$this->show(
							array( "complete" => array( '$ne' => false ) ),
							array( 'completed' => 1 )
						);
					else if ( "high" == $argument )
						$this->add( "high", $this->argv[2] );
					else if ( "low" == $argument )
						$this->add( "low", $this->argv[2] );
					else if ( "finish" == $argument )
						$this->complete( true, $this->argv[2] );
					else if ( "dont" == $argument )
						$this->complete( false, $this->argv[2] );
					else
						throw new Exception( "Bad Method" );
				}
			}
			catch ( Exception $e ) {
				$this->help( $e->getMessage() );
			}
		}

		protected function show ( $params = null, $sort = null ) {
			$cursor = $this->mongo_db->todos->find( $params );
			if( ! is_null( $sort ) )
				$cursor->sort( $sort );
			foreach ( $cursor as $row )
				print $row['task'] . "\n";
		}

		protected function add ( $level, $item ) {
			if ( 2 >= count( $this->argv ) )
				throw new Exception( "missing argument" );
			$this->mongo_db->todos->insert( array(
				"task" => $item,
				"level" => $level,
				"complete" => false,
				"added" => time()
			) );
		}

		protected function complete ( $finish, $item ) {
			if ( 2 >= count( $this->argv ) )
				throw new Exception( "missing argument" );
			$document = $this->mongo_db->todos->findOne( array( "complete" => false, "task" => $item ) );
			if ( is_null( $document ) )
				print "No Matching ToDo Found\n";
			else {
				if ( $finish ) {
					$document['complete'] = time();
					$this->mongo_db->todos->save( $document );
				}
				else {
					$this->mongo_db->todos->remove( $document );
				}
			}
		}

	} // Class ToDo

	if( 'cli' == PHP_SAPI ) {
		try {
			$app = new ToDo( $argv );
			$app->run();
		}
		catch( Exception $e ) {
			print $e->getMessage() . "\n";
		}
	}