<?php

function email_list_theme() {
  return array(
    'email_list_form' => array(
      'arguments' => array('form'),
    ),
  );
}

function email_list_menu() {
  $items = array();
  
  $items['admin/email'] = array(
    'title' => 'Email',
    'description' => 'Collects a list of emails',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('email_list_form'),
    'access arguments' => array('administer email list'),
  );
  
  return $items;
}

function email_list_form(&$form_state) {
  $form = array();
  
  if (isset($form_state['storage']['name'])) {
    $form['lastname'] = array(
      '#type' => 'textfield',
      '#title' => t('Last name'),
    );
  }
  else {
    $form['email'] = array(
      '#type' => 'textfield',
      '#title' => t('E-mail address'),
      '#required' => TRUE,
      '#description' => t('The email address, duh')
    );
    
    $form['name'] = array(
      '#type' => 'textfield',
      '#title' => t('First name'),
      '#description' => t('The first name of the person who\'s email address this is'),
    );
  }
  
  $form['submit'] = array(
    '#type' => 'submit', 
    '#value' => t('Submit'),
  );
  
  return $form;
}

function email_list_form_validate(&$form, &$form_state) {
  if (!isset($form_state['storage']['name']) && !valid_email_address($form_state['values']['email'])) {
    form_error($form['email'], 'This is not a valid email address');
  }
}

function email_list_form_submit($form, &$form_state) {
  if (!isset($form_state['storage']['name'])) {
    $form_state['storage']['name'] = $form_state['values']['name'];
    $form_state['storage']['email'] = $form_state['values']['email'];
    $form_state['rebuild'] = TRUE;
  }
  else {
    drupal_set_message($form_state['storage']['name'] .' '. $form_state['values']['lastname'] .'\'s email address is '. $form_state['storage']['email']);
    $form_state['redirect'] = 'admin';
    unset($form_state['storage']);
  }
}

function theme_email_list_form($form) {
  $output = "";
  if (isset($form['name'])) {
    //$output .= drupal_render($form['name']);
    //$output .= drupal_render($form['email']);
    
    $form['name']['#size'] = 30;
    $form['email']['#size'] = 30;
    unset($form['name']['#title']);
    unset($form['email']['#title']);
    $output .= theme(
      'table',
      array(
        t('Name'),
        t('E-mail')
      ),
      array(
        array(
          drupal_render($form['name']),
          drupal_render($form['email'])
        )
      )
    );
  }
  $output .= drupal_render($form);
  return $output;
}