<?php
// $Id: uc_weightquote.admin.inc,v 1.18 2011-02-16 19:43:36 tr Exp $

/**
 * @file
 * Weight quote shipping method administration menu items.
 */

/**
 * Lists and compares all weight-based shipping quote methods.
 */
function uc_weightquote_admin_methods() {
  $build = array();

  $rows = array();
  $result = db_query("SELECT mid, title, label, base_rate, product_rate FROM {uc_weightquote_methods}");
  foreach ($result as $method) {
    $row = array();
    $row[] = check_plain($method->title);
    $row[] = check_plain($method->label);
    $row[] = uc_currency_format($method->base_rate);
    $row[] = uc_currency_format($method->product_rate);
    $row[] = l(t('edit'), 'admin/store/settings/quotes/methods/weightquote/' . $method->mid);
    $rows[] = $row;
  }
  if (count($rows)) {
    $header = array(t('Title'), t('Label'), t('Base rate'), t('Default product rate'), array('data' => t('Operations'), 'colspan' => 1));
    $build['methods'] = array(
      '#theme' => 'table',
      '#header' => $header,
      '#rows' => $rows,
    );
  }

  return $build;
}

/**
 * Configures the store default product shipping rates.
 *
 * @see uc_weightquote_admin_method_edit_form_validate()
 * @see uc_weightquote_admin_method_edit_form_submit()
 * @see uc_weightquote_admin_method_edit_form_delete()
 * @ingroup forms
 */
function uc_weightquote_admin_method_edit_form($form, &$form_state, $mid = 0) {
  $sign_flag = variable_get('uc_sign_after_amount', FALSE);
  $currency_sign = variable_get('uc_currency_sign', '$');

  if ($mid && ($method = db_query("SELECT * FROM {uc_weightquote_methods} WHERE mid = :mid", array(':mid' => $mid))->fetchObject())) {
    $form['mid'] = array('#type' => 'value', '#value' => $mid);
  }
  else {
    $method = (object) array(
      'title' => '',
      'label' => '',
      'base_rate' => '',
      'product_rate' => '',
    );
  }

  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => t('Shipping method title'),
    '#description' => t('The name shown to distinguish it from other weightquote methods.'),
    '#default_value' => $method->title,
  );
  $form['label'] = array(
    '#type' => 'textfield',
    '#title' => t('Line item label'),
    '#description' => t('The name shown to the customer when they choose a shipping method at checkout.'),
    '#default_value' => $method->label,
  );
  $form['base_rate'] = array(
    '#type' => 'textfield',
    '#title' => t('Base price'),
    '#description' => t('The starting price for weight-based shipping costs.'),
    '#default_value' => $method->base_rate,
    '#size' => 16,
    '#field_prefix' => $sign_flag ? '' : $currency_sign,
    '#field_suffix' => $sign_flag ? $currency_sign : '',
  );
  $form['product_rate'] = array(
    '#type' => 'textfield',
    '#title' => t('Default cost adjustment per !unit', array('!unit' => variable_get('uc_weight_unit', 'lb'))),
    '#description' => t('The amount per weight unit to add to the shipping cost for an item.<br />Example: to add $5 per pound, put 5 in here.'),
    '#default_value' => $method->product_rate,
    '#size' => 16,
    '#field_prefix' => $sign_flag ? '' : $currency_sign,
    '#field_suffix' => t('!sign per !unit', array('!sign' => $sign_flag ? $currency_sign : '', '!unit' => variable_get('uc_weight_unit', 'lb'))),
  );

  $conditions = rules_config_load('get_quote_from_weightquote_' . $mid);
  if ($conditions) {
    $conditions->form($form, $form_state);
  }

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

  if (isset($form['mid'])) {
    $form['actions']['delete'] = array(
      '#type' => 'submit',
      '#value' => t('Delete'),
      '#validate' => array(),
      '#submit' => array('uc_weightquote_admin_method_edit_form_delete'),
    );
  }

  return $form;
}

/**
 * Form validation for uc_weightquote_admin_method_edit_form().
 *
 * @see uc_weightquote_admin_method_edit_form()
 * @see uc_weightquote_admin_method_edit_form_submit()
 */
function uc_weightquote_admin_method_edit_form_validate($form, &$form_state) {
  if (!empty($form_state['values']['base_rate']) && !is_numeric($form_state['values']['base_rate'])) {
    form_set_error('base_rate', t('The base rate must be a numeric amount.'));
  }
  if (!empty($form_state['values']['product_rate']) && !is_numeric($form_state['values']['product_rate'])) {
    form_set_error('product_rate', t('The product rate must be a numeric amount.'));
  }
}

/**
 * @see uc_weightquote_admin_method_edit_form()
 */
function uc_weightquote_admin_method_edit_form_delete($form, &$form_state) {
  drupal_goto('admin/store/settings/quotes/weightquote/' . $form_state['values']['mid'] . '/delete');
}

/**
 * Form submission handler for uc_weightquote_admin_method_edit_form().
 *
 * @see uc_weightquote_admin_method_edit_form()
 * @see uc_weightquote_admin_method_edit_form_validate()
 */
function uc_weightquote_admin_method_edit_form_submit($form, &$form_state) {
  if (isset($form_state['values']['mid'])) {
    drupal_write_record('uc_weightquote_methods', $form_state['values'], 'mid');
    drupal_set_message(t("Weight quote shipping method was updated."));
  }
  else {
    drupal_write_record('uc_weightquote_methods', $form_state['values']);
    $mid = $form_state['values']['mid'];

    $enabled = variable_get('uc_quote_enabled', array());
    $enabled['weightquote_' . $mid] = TRUE;
    variable_set('uc_quote_enabled', $enabled);

    $weight = variable_get('uc_quote_method_weight', array());
    $weight['weightquote_' . $mid] = 0;
    variable_set('uc_quote_method_weight', $weight);

    // Ensure Rules picks up the new condition.
    entity_flush_caches();

    drupal_set_message(t("Created and enabled new weight quote shipping method."));
  }

  $form_state['redirect'] = 'admin/store/settings/quotes/methods/weightquote';
}

/******************************************************************************
 * Menu Callbacks                                                             *
 ******************************************************************************/

/**
 * Confirms deletion of a weight-based shipping method.
 *
 * @see uc_weightquote_admin_method_confirm_delete_submit()
 * @ingroup forms
 */
function uc_weightquote_admin_method_confirm_delete($form, &$form_state, $mid) {
  $form['mid'] = array('#type' => 'value', '#value' => $mid);

  return confirm_form($form, t('Do you want to delete this shipping method?'),
    'admin/store/settings/quotes/methods/weightquote',
    t('This will remove the shipping method and the product-specific overrides (if applicable). This action can not be undone.'),
    t('Delete'));
}

/**
 * Form submission handler for uc_weightquote_admin_method_confirm_delete().
 *
 * @see uc_weightquote_admin_method_confirm_delete()
 */
function uc_weightquote_admin_method_confirm_delete_submit($form, &$form_state) {
  $mid = $form_state['values']['mid'];

  db_delete('uc_weightquote_methods')
    ->condition('mid', $mid)
    ->execute();
  db_delete('uc_weightquote_products')
    ->condition('mid', $mid)
    ->execute();

  rules_config_delete(array('get_quote_from_weightquote_' . $form_state['values']['mid']));

  $enabled = variable_get('uc_quote_enabled', array());
  unset($enabled['weightquote_' . $mid]);
  variable_set('uc_quote_enabled', $enabled);

  $weight = variable_get('uc_quote_method_weight', array());
  unset($weight['weightquote_' . $mid]);
  variable_set('uc_quote_method_weight', $weight);

  drupal_set_message(t('Weight quote shipping method deleted.'));
  $form_state['redirect'] = 'admin/store/settings/quotes/methods/weightquote';
}