<?php
// $Id: condition.admin.inc,v 1.6 2009-06-08 04:00:34 tobiassjosten Exp $

/**
 * @file
 * Conditions are sets of requirements that make the condition met or not.
 * Other modules can use this to provide conditional actions.
 */

/**
 * Listing conditions.
 */
function condition_list_form(&$form_state) {
  $conditions = condition_load();

  if (count($conditions)) {
    foreach ($conditions as $condition) {
      $form['conditions'][$condition->cid] = array(
        '#tree' => TRUE,
      );
      $form['conditions'][$condition->cid]['#item'] = $condition;
      $form['conditions'][$condition->cid]['name'] = array(
        '#value' => $condition->name,
      );
      $form['conditions'][$condition->cid]['status'] = array(
        '#type' => 'checkbox',
        '#default_value' => (bool) (isset($form_state['conditions'][$condition->cid]['status']) ? $form_state['conditions'][$condition->cid]['status'] : $condition->status),
      );
      $form['conditions'][$condition->cid]['weight'] = array(
        '#type' => 'weight',
        '#default_value' => isset($form_state['conditions'][$condition->cid]['weight']) ? $form_state['conditions'][$condition->cid]['weight'] : $condition->weight,
      );
      $form['conditions'][$condition->cid]['edit'] = array(
        '#value' => l(t('edit'), 'admin/settings/condition/'. $condition->cid .'/edit')
      );
      $form['conditions'][$condition->cid]['delete'] = array(
        '#value' => l(t('delete'), 'admin/settings/condition/'. $condition->cid .'/delete'),
      );
    }

    $form['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Save configuration'),
    );
  }
  else {
    $form['empty'] = array('#value' => t('There are no conditions yet. !Add a condition first.', array('!Add' => l(t('Add'), 'admin/settings/condition/add'))));
  }

  return $form;
}

/**
 * Theme: Listing rules or effects.
 */
function theme_condition_list_form($form) {
  drupal_add_tabledrag('order-conditions', 'order', 'sibling', 'condition-weight');

  $header = array(
    t('Condition'),
    array('data' => t('Enabled'), 'class' => 'checkbox'),
    t('Weight'),
    array('data' => t('Operations'), 'colspan' => '2'),
  );

  $conditions = array();

  foreach (element_children($form['conditions']) as $cid) {
    $form['conditions'][$cid]['weight']['#attributes']['class'] = 'condition-weight';

    $conditions[] = array(
      'data' => array(
        drupal_render($form['conditions'][$cid]['name']),
        array(
          'data' => drupal_render($form['conditions'][$cid]['status']),
          'class' => 'checkbox'
        ),
        drupal_render($form['conditions'][$cid]['weight']),
        drupal_render($form['conditions'][$cid]['edit']),
        drupal_render($form['conditions'][$cid]['delete']),
      ),
      'class' => 'draggable',
    );
  }

  $output = '';

  if (count($conditions)) {
    $output .= theme('table', $header, $conditions, array('id' => 'order-conditions'));
  }

  $output .= drupal_render($form);

  return $output;
}

/**
 * Submit: Listing rules or effects.
 */
function condition_list_form_submit($form, &$form_state) {
  foreach (element_children($form['conditions']) as $cid) {
    $condition          = $form['conditions'][$cid]['#item'];
    $condition->weight  = $form['conditions'][$cid]['weight']['#value'];
    $condition->status  = $form['conditions'][$cid]['status']['#value'];

    condition_save($condition);
  }
}

/**
 * Adding or editting a condition.
 */
function condition_edit_form(&$form_state, $condition = NULL) {
  if (is_object($condition)) {
    $form['#item'] = $condition;
  }

  $form['name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name'),
    '#description' => t('Name to indentify the condition.'),
    '#required' => TRUE,
    '#maxlength' => 255,
    '#default_value' => $condition->name,
  );

  $requirements = module_invoke_all('requirement_info');

  if (is_array($requirements) && count($requirements)) {
    foreach ($requirements as $requirement => $info) {
      $form['requirements'][$requirement] = array(
        '#type' => 'fieldset',
        '#title' => t('Requirement: @requirement', array('@requirement' => $info['name'])),
        '#description' => $info['description'],
        '#collapsible' => TRUE,
        '#collapsed' => !isset($condition->parameters[$requirement]),
      );

      $function                            = $requirement .'_form';
      $form['requirements'][$requirement]  = array_merge($form['requirements'][$requirement], $function($condition->parameters[$requirement]));
    }
  }
  else {
    $form['requirements'] = array(
      '#type' => 'fieldset',
      '#title' => t('Requirements'),
      '#description' => t('No requirement plug-ins found. Please !enable a module containing some or else this condition will always be met.', array('!enable' => l(t('enable'), 'admin/build/modules', array('fragment' => 'edit-status-requirements')))),
      '#collapsible' => TRUE,
      '#collapsed' => FALSE,
    );
  }

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save configuration'),
  );

  return $form;
}

/**
 * Theme: Adding or editting a condition.
 */
function theme_condition_edit_form($form) {
  if ($form['#item']) {
    drupal_set_title(t('Edit condition %name', array('%name' => $form['#item']->name)));
  }
  else {
    drupal_set_title(t('Add condition'));
  }

  return drupal_render($form);
}

/**
 * Submit: Adding or editting a condition.
 */
function condition_edit_form_submit($form, &$form_state) {
  $condition              = $form['#item'] ? $form['#item'] : new stdClass();
  $condition->name        = $form_state['values']['name'];

  foreach (element_children($form['requirements']) as $requirement) {
    $function                              = $requirement .'_form_submit';
    $condition->parameters[$requirement]  = $function($form, $form_state);
  }

  condition_save($condition);
  drupal_set_message(t('The condition %name has been saved.', array('%name' => $condition->name)));
  $form_state['redirect'] = 'admin/settings/condition';
}

/**
 * Deleting a condition.
 */
function condition_delete_form(&$form_state, $condition) {
  $form['#item'] = $condition;

  return confirm_form($form, t('Are you sure you wan to delete the condition %name?', array('%name' => $condition->name)), 'admin/settings/condition');
}

/**
 * Submit: Deleting a condition.
 */
function condition_delete_form_submit($form, &$form_state) {
  condition_delete($form['#item']);
  drupal_set_message(t('The condition %name has been deleted.', array('%name' => $form['#item']->name)));
  $form_state['redirect'] = 'admin/settings/condition';
}