Added teardown command

Author: joegreen88

bin/teardown

@@ -0,0 +1,3 @@
+#!/usr/bin/env php
+<?php
+include('teardown.php');

bin/teardown.php

@@ -0,0 +1,14 @@
+<?php
+
+require_once realpath(dirname(__FILE__).'/../../../autoload.php');
+
+$app = new \Symfony\Component\Console\Application('teardown');
+
+foreach (\Smrtr\MysqlVersionControl\DbConfig::getEnvironments() as $env) {
+
+    $app->add(
+        new \Smrtr\MysqlVersionControl\TeardownCommand($env)
+    );
+}
+
+$app->run();

composer.lock

@@ -0,0 +1,79 @@
+<?php
+
+namespace Smrtr\MysqlVersionControl;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Class TeardownCommand
+ * @package Smrtr\MysqlVersionControl
+ * @author Joe Green
+ */
+class TeardownCommand extends Command
+{
+    protected $env;
+
+    public function __construct($env)
+    {
+        $this->env = $env;
+        parent::__construct();
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName($this->env)
+            ->setDescription('Install the '.$this->env.' versions')
+            ->addArgument(
+                'mysqlbin',
+                InputArgument::OPTIONAL,
+                'Where is the MySQL binary located?'
+            )
+            ->addOption(
+                'confirm',
+                null,
+                InputOption::VALUE_NONE,
+                'If set, the command will bypass the confirmation prompt'
+            )
+        ;
+    }
+    /**
+     * Confirmation prompt then tear down the database tables
+     *
+     * @param InputInterface $input
+     * @param OutputInterface $output
+     * @return int|null|void
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $con = DbConfig::getPDO($this->env, true);
+        $stmt = $con->query("SHOW TABLES");
+        $result = $stmt->fetchAll();
+
+        $tables = array();
+        foreach ($result as $row) {
+            $tables[] = array_shift($row);
+        }
+
+        $dialogue = $this->getHelperSet()->get('dialog');
+        if (!$input->getOption('confirm')) {
+            $tableCount = count($tables);
+            $answer = $dialogue->askConfirmation(
+                $output,
+                "<question>Tear down $tableCount tables(y/n)?</question>",
+                false
+            );
+            if (!$answer) {
+                exit;
+            }
+        }
+
+        foreach ($tables as $table) {
+            $con->exec("DROP TABLE IF EXISTS `$table`");
+            $output->writeln("Dropped table $table");
+        }
+    }
+
+}

src/Smrtr/MysqlVersionControl/TeardownCommand.php

@@ -34,12 +34,6 @@ protected function configure()
                 InputArgument::OPTIONAL,
                 'Where is the MySQL binary located?'
             )
-            ->addOption(
-                'confirm',
-                null,
-                InputOption::VALUE_NONE,
-                'If set, the command will bypass the confirmation prompt'
-            )
         ;
     }