<?php

/**
 * @file
 * Contains the muamba transaction status views field handler.
 */

/**
 * Field handler for muamba transaction status.
 */
class views_handler_field_muamba_status extends views_handler_field {
  /**
   * Renders the field.
   */
  function render($values) {
    if (isset($values->muamba_status)) {
      return t(muamba_statuses($values->muamba_status));
    }
  }
}

/**
 * Filter by transaction status
 */
class views_handler_filter_muamba_status extends views_handler_filter_in_operator {
  function get_value_options() {
    if (!isset($this->value_options)) {
      $this->value_title   = t('Transaction status');
      $this->value_options = muamba_statuses();
    }
  }
}

/**
 * Field handler for muamba transaction status.
 */
class views_handler_field_muamba_available extends views_handler_field {
  /**
   * Implements views_handler_field#query().
   */
  function query() {
    // Provide an field alias but don't actually alter the query.
    $this->field_alias = 'views_muamba_available_' . $this->position;
  }

  /**
   * Renders the field.
   */
  function render($values) {
    if (isset($values->mid)) {
      $transaction = muamba_get_transaction($values->mid);
      return muamba_availability_info($transaction['nid']);
    }
    elseif (isset($values->nid)) {
      return muamba_availability_info($values->nid);
    }
  }
}

/**
 * Field handler for muamba transaction status.
 */
class views_handler_field_muamba_actions extends views_handler_field {
  /**
   * Implements views_handler_field#query().
   */
  function query() {
    // Provide an field alias but don't actually alter the query.
    $this->field_alias = 'views_muamba_actions_' . $this->position;
  }

  /**
   * Option definition.
   */
  function option_definition() {
    $options             = parent::option_definition();
    $options['messages'] = array('default' => FALSE);
    return $options;
  }

  /**
   * Provide link to node option.
   */
  function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);

    $form['messages'] = array(
      '#type'          => 'checkbox',
      '#title'         => t('Show messages link'),
      '#default_value' => isset($this->options['messages']) ? $this->options['messages'] : FALSE,
      '#description'   => t('Add a link to the transaction thread.'),
    );
  }

  /**
   * Renders the field.
   */
  function render($values) {
    global $user;

    if (isset($values->mid)) {
      // We should point to the current transaction.
      $old         = muamba_get_transaction($values->mid);
      $transaction = muamba_current_transactions($old['nid'], $old['uid']);

      if (empty($transaction)) {
        return;
      }

      if ($transaction['owner'] == $user->uid) {
        return theme('muamba_widget_owner', array(
          'transaction' => $transaction,
          'messages'    => $this->options['messages'],
        ));
      }
      elseif ($transaction['uid'] == $user->uid) {
        return theme('muamba_widget_requester', array(
          'transaction' => $transaction,
          'messages'    => $this->options['messages'],
        ));
      }
    }
    elseif (isset($values->nid)) {
      if (isset($values->users_muamba_uid)) {
        $transaction = muamba_current_transactions($values->nid, $values->users_muamba_uid);

        // Current user may be the requester
        if (empty($transaction)) {
          $transaction = muamba_current_transactions($values->nid, $user->uid);
        }

        if ($transaction['owner'] == $user->uid) {
          return theme('muamba_widget_owner', array(
            'transaction' => $transaction,
            'messages'    => $this->options['messages'],
          ));
        }
        elseif ($transaction['uid'] == $user->uid) {
          return theme('muamba_widget_requester', array(
            'transaction' => $transaction,
            'messages'    => $this->options['messages'],
          ));
        }
      }
      else {
        $node = node_load($values->nid);
        return muamba_widget($node, 'small', $this->options['messages']);
      }
    }
  }
}

/**
 * Field handler for muamba total transactions.
 */
class views_handler_field_muamba_total extends views_handler_field {
  /**
   * Implements views_handler_field#query().
   */
  function query() {
    // Provide an field alias but don't actually alter the query.
    $this->field_alias = 'views_muamba_total_' . $this->position;
  }

  /**
   * Option definition.
   */
  function option_definition() {
    $options          = parent::option_definition();
    $options['value'] = array('default' => 'transactions');
    return $options;
  }

  /**
   * Provide link to node option.
   */
  function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);

    $form['value'] = array(
      '#type' => 'select',
      '#title' => t('Which value'),
      '#options' => array(
        'transactions' => t('Number of transactions'),
        'requested'    => t('Number of current requests'),
        'rejected'     => t('Number of rejections'),
        'borrowed'     => t('Number of times it was borrowed'),
      ),
      '#default_value' => isset($this->options['value']) ? $this->options['value'] : 'transactions',
    );
  }

  /**
   * Renders the field.
   */
  function render($values) {
    if (isset($values->nid)) {
      return muamba_total($values->nid, $this->options['value']);
    }
  }
}