<?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 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().
   *
   * @see views_php_views_pre_execute()
   */
  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) {
    global $user;
    $available = muamba_check_availability($values->nid);

    if ($values->users_node_uid == $user->uid) {
      return t('You own the item');
    }
    elseif (!$available) {
      $transaction = muamba_current_transactions($values->nid, $user->uid);

      if (isset($transaction['uid']) && $transaction['uid'] == $user->uid) {
        return t('You requested');
      }
      else {
        return t('No');
      }
    }

    return t('Yes');
  }
}

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

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

    if (isset($values->mid)) {
      $transaction = muamba_get_transaction($values->mid);
      // @todo
      return 'TODO';
    }
    elseif (isset($values->nid)) {
      $available = muamba_check_availability($values->nid);
      $node      = node_load($values->nid);

      // Check if widget can be shown
      if ($node->type != MUAMBA_NODE_TYPE || !muamba_has_request_access($node)) {
        return;
      }

      if ($node->uid != $user->uid) {
        $transactions = muamba_current_transactions($values->nid, $user->uid);
      }
      else {
        $transactions = muamba_current_transactions($values->nid);
      }

      return theme('muamba_widget', array(
        'node'         => $node,
        'transactions' => $transactions,
        'available'    => $available,
      ));
    }
  }
}