Default currency is not allow to delete, and value is always equal to 1.
'); + return $output; + } +} + +/** + * Implementation of hook_menu() + */ +function ecurrency_menu($may_cache) { + $items = array(); + + $access = user_access('administer store'); + + if ($may_cache) { + $items[] = array( + 'path' => 'admin/store/settings/ecurrency/configure', + 'title' => t('configure'), + 'type' => MENU_DEFAULT_LOCAL_TASK, + 'access' => $access, + ); + $items[] = array( + 'path' => 'admin/store/settings/ecurrency/list', + 'title' => t('list'), + 'callback' => 'ecurrency_admin_currency_list', + 'type' => MENU_LOCAL_TASK, + 'access' => $access, + ); + $items[] = array( + 'path' => 'admin/store/settings/ecurrency/add/currency', + 'title' => t('add currency'), + 'callback' => 'ecurrency_admin_currency_edit', + 'type' => MENU_LOCAL_TASK, + 'weight' => 1, + 'access' => $access, + ); + $items[] = array( + 'path' => 'admin/store/settings/ecurrency/edit/currency', + 'title' => t('edit currency'), + 'callback' => 'ecurrency_admin_currency_edit', + 'type' => MENU_CALLBACK, + 'access' => $access, + ); + $items[] = array( + 'path' => 'admin/store/settings/ecurrency/update/currency', + 'title' => t('edit currency'), + 'callback' => 'ecurrency_admin_currency_update', + 'type' => MENU_CALLBACK, + 'access' => $access, + ); + } + else { + // Add css for price formatting + theme_add_style(drupal_get_path('module', 'ecurrency') .'/ecurrency.css'); + + // Alway reset base currency value to 1 + $base = ecurrency_get_currency(variable_get('ecurrency_default_base', 1)); + if ($base['value'] != 1) { + $base['value'] = 1; + ecurrency_save_currency($base); + + $currencies = ecurrency_get_currencies_list(); + foreach ($currencies as $currencies_id => $currency) { + ecurrency_admin_currency_update($currencies_id, TRUE); + } + } + + // We change the selected currency by drop down select, save it, and back to currenct page + if ($_POST['edit']['ecurrency_custom_display']) { + db_query("UPDATE {ec_ecurrency_cache} SET currencies_id = %d, last_updated = %d WHERE cookie_id = '%s'", $_POST['edit']['ecurrency_custom_display'], time(), ecurrency_get_id()); + drupal_goto(); + } + } + + return $items; +} + +/** + * Implementation of hook_block() + */ +function ecurrency_block($op = "list", $delta = 0, $edit = array()) { + if ($op == 'list') { + $blocks[0]['info'] = t('Currencies'); + return $blocks; + } + else if ($op == 'view') { + /** + * Until Drupal can handle partial page caching, We should not display this + * block for anonymous users. This is due to all anonymous user will share + * the same session_id(), and so we can't handle it. + */ + global $user; + if ($user->uid == 0 && variable_get('cache', 0)) { + return FALSE; + } + + $list = ecurrency_get_currencies_list(); + $display = ecurrency_get_display(); + $form['ecurrency_custom_display'] = array( + '#type' => 'select', + '#default_value' => $display, + '#options' => $list, + '#attributes' => array('onChange' => 'this.form.submit()'), + ); + + $block['subject'] = t('Currencies'); + $block['content'] = drupal_get_form('ecurrency_block_form', $form); + return $block; + } +} + +/** + * implementation of hook_ec_settings() + */ +function ecurrency_ec_settings() { + $form['default'] = array( + '#type' => 'fieldset', + '#title' => t('Default Settings'), + '#collapsible' => TRUE, + '#collapsed' => FALSE, + ); + $form['default']['intro'] = array( + '#type' => 'item', + '#value' => t('Specify the base currency. All foregin exchange rate of other currencies will base on base currency. Note that change of default currency requires a manual update of database currency values.'), + ); + $form['default']['ecurrency_default_base'] = array( + '#type' => 'select', + '#title' => t('Default base currency'), + '#default_value' => variable_get('ecurrency_default_base', 1), + '#options' => ecurrency_get_currencies_list(), + ); + $form['default']['ecurrency_default_display'] = array( + '#type' => 'select', + '#title' => t('Default display currency'), + '#default_value' => variable_get('ecurrency_default_display', 1), + '#options' => ecurrency_get_currencies_list(), + '#description' => t('Default display currency. Anonymous user will use this as currency display format.'), + ); + $form['update'] = array( + '#type' => 'fieldset', + '#title' => t('Update Settings'), + '#collapsible' => TRUE, + '#collapsed' => FALSE, + ); + $form['update']['ecurrency_update_manual'] = array( + '#type' => 'select', + '#title' => t('Manual update foregin exchange rate'), + '#default_value' => variable_get('ecurrency_update_manual', array()), + '#options' => ecurrency_get_currencies_list(), + '#multiple' => TRUE, + '#description' => t("Admin can change the foregin exchange rate manually, by manual input or currency_api. Value of default base currency is always equal to 1, and can't be changed."), + ); + $form['update']['ecurrency_update_auto'] = array( + '#type' => 'select', + '#title' => t('Automatic update foregin exchange rate'), + '#default_value' => variable_get('ecurrency_update_auto', array()), + '#options' => ecurrency_get_currencies_list(), + '#multiple' => TRUE, + '#description' => t('Chose currencies that hope to handle update forgine exchange rate automatically by cron. Dependency: currency_api.module'), + ); + + if (!module_exist('currency_api')) { + $form['update']['ecurrency_update_auto']['#attributes'] = array('disabled' => 'disabled'); + } + + return $form; +} + +/** + * Implementation of hook_user(). + */ +function ecurrency_user($op, &$edit, &$user, $category = NULL) { + switch ($op) { + case 'login': + // Convert their cookie_id from session id to user id at login. + db_query("DELETE FROM {ec_ecurrency_cache} WHERE cookie_id = %d", $user->uid); + db_query("UPDATE {ec_ecurrency_cache} SET cookie_id = %d WHERE cookie_id = '%s'", $user->uid, session_id()); + break; + } +} + +/** + * Implementation of hook_cron() + */ +function ecurrency_cron() { + // Auto update foregin exchange rate + $currencies = ecurrency_get_currencies_list(); + $auto = variable_get('ecurrency_update_auto', array()); + foreach ($currencies as $currencies_id => $currency) { + if (array_key_exists($currencies_id, $auto)) { + ecurrency_admin_currency_update($currencies_id, TRUE); + } + } + + // Clean cache that month before + db_query('DELETE FROM {ec_ecurrency_cache} WHERE last_updated < %d', strtotime('last month')); +} + +/******************************************************************** + * API Functions + ********************************************************************/ + +/** + * Format the price according to input currency format. + */ +function ecurrency_format($from, $to, $price) { + static $formats = array(); + $formats = !empty($formats) ? $formats : ecurrency_get_currencies(); + + $price = (float) $price / (float) $formats[$from]['value'] * (float) $formats[$to]['value']; + $price = number_format((float) $price, + $formats[$to]['decimal_places'], + $formats[$to]['decimal_point'], + $formats[$to]['thousands_point']); + $price = $formats[$to]['symbol_left'] . $price . $formats[$to]['symbol_right']; + + ($from == $to) ? + $price = 'For more information about ISO 4217 three-character currency code, please read Wiki page.
', array('%wiki' => 'http://en.wikipedia.org/wiki/ISO_4217#Active_codes_.28sorted_by_code.29')), + ); + $form['title'] = array( + '#type' => 'textfield', + '#title' => t('Title'), + '#default_value' => $edit['title'], + '#size' => 32, + '#maxlength' => 32, + '#description' => t('Enter the title of this currency.'), + '#required' => TRUE, + ); + $form['code'] = array( + '#type' => 'textfield', + '#title' => t('Code'), + '#default_value' => $edit['code'], + '#size' => 32, + '#maxlength' => 3, + '#description' => t('Enter the ISO 4217 three-character currency code.'), + '#required' => TRUE, + ); + $form['symbol_left'] = array( + '#type' => 'textfield', + '#title' => t('Symbol Left'), + '#default_value' => $edit['symbol_left'], + '#size' => 32, + '#maxlength' => 12, + '#description' => t('Enter the left currency symbol. This will be displayed in front of the price.'), + ); + $form['symbol_right'] = array( + '#type' => 'textfield', + '#title' => t('Symbol Right'), + '#default_value' => $edit['symbol_right'], + '#size' => 32, + '#maxlength' => 12, + '#description' => t('Enter the right currency symbol. This will be displayed after the price.'), + ); + $form['decimal_point'] = array( + '#type' => 'textfield', + '#title' => t('Decimal Point'), + '#default_value' => $edit['decimal_point'], + '#size' => 32, + '#maxlength' => 1, + '#description' => t('Enter the sign to seperate real numbers from floating numbers.') + ); + $form['thousands_point'] = array( + '#type' => 'textfield', + '#title' => t('Thousands Point'), + '#default_value' => $edit['thousands_point'], + '#size' => 32, + '#maxlength' => 1, + '#description' => t('Enter the sign for the thousands separator.') + ); + $form['decimal_places'] = array( + '#type' => 'textfield', + '#title' => t('Decimal Places'), + '#default_value' => $edit['decimal_places'], + '#size' => 32, + '#maxlength' => 1, + '#description' => t('How many slots are needed after the decimal?') + ); + $form['value'] = array( + '#type' => 'textfield', + '#title' => t('Foreign Exchange Rate'), + '#default_value' => $edit['value'], + '#size' => 32, + '#maxlength' => 21, + '#description' => t('Current foreign exchange rate with default currency.'), + ); + if ($edit['currencies_id'] == variable_get('ecurrency_default_base', 1) || + ($edit['currencies_id'] && !array_key_exists($edit['currencies_id'], variable_get('ecurrency_update_manual', array())))) { + $form['value']['#attributes'] = array('disabled' => 'disabled'); + } + + $form['submit'] = array('#type' => 'submit', '#value' => t('Submit')); + if ($edit['currencies_id']) { + if ($edit['currencies_id'] != variable_get('ecurrency_default_base', 1)) { + $form['delete'] = array('#type' => 'submit', '#value' => t('Delete')); + } + $form['currencies_id'] = array('#type' => 'value', '#value' => $edit['currencies_id']); + } + return drupal_get_form('ecurrency_form_currency', $form); +} + +function ecurrency_form_currency_submit($form_id, $form_values) { + $form_values = array_filter($form_values); + switch (ecurrency_save_currency($form_values)) { + case SAVED_NEW: + drupal_set_message(t('Created new currency %title.', array('%title' => theme('placeholder', $form_values['title'])))); + break; + case SAVED_UPDATED: + drupal_set_message(t('Updated currency %title.', array('%title' => theme('placeholder', $form_values['title'])))); + break; + } + return 'admin/store/settings/ecurrency/list'; +} + +function _ecurrency_confirm_del_currency($currencies_id) { + $currency = ecurrency_get_currency($currencies_id); + + $form['type'] = array('#type' => 'value', '#value' => 'ecurrency'); + $form['currencies_id'] = array('#type' => 'value', '#value' => $currencies_id); + $form['title'] = array('#type' => 'value', '#value' => $currency['title']); + return confirm_form('ecurrency_currency_confirm_delete', $form, + t('Are you sure you want to delete the currency %title?', + array('%title' => theme('placeholder', $currency['title']))), + 'admin/store/settings/ecurrency', t('This action cannot be undone.'), + t('Delete'), + t('Cancel')); +} + +function ecurrency_currency_confirm_delete_submit($form_id, $form_values) { + $status = ecurrency_del_currency($form_values['currencies_id']); + drupal_set_message(t('Deleted currency %title.', array('%title' => theme('placeholder', $form_values['title'])))); + return 'admin/store/settings/ecurrency/list'; +} + + +/******************************************************************** + * Helper Functions + ********************************************************************/ + +/** + * Return the unique id (and hence the cookie_id) of the user. + */ +function ecurrency_get_id() { + global $user; + static $id = NULL; + + if (!$id) { + if ($user->uid) { + $id = $user->uid; + } + else if ($sid = session_id()) { + $id = $sid; + } + } + + return $id; +} + +/** + * Return current display currency format + */ +function ecurrency_get_display() { + global $user; + static $cookie = NULL; + + if ($user->uid == 0 && variable_get('cache', 0)) { + if (!$cookie) { + $cookie = variable_get('ecurrency_default_display', 1); + } + } + else { + $id = ecurrency_get_id(); + if (!$cookie) { + $cookie = db_result(db_query("SELECT currencies_id FROM {ec_ecurrency_cache} WHERE cookie_id = '%s'", $id)); + if (!$cookie) { + $cookie = variable_get('ecurrency_default_display', 1); + db_query("INSERT INTO {ec_ecurrency_cache} (cookie_id, currencies_id, last_updated) VALUES ('%s', %d, %d)", $id, $cookie, time()); + } + } + } + + return $cookie; +} + +/** + * Save change of currency format, due to update/delete/add + */ +function ecurrency_save_currency(&$edit) { + //Update currency + if ($edit['currencies_id'] && $edit['title'] && $edit['code']) { + db_query("UPDATE {ec_ecurrency} SET title = '%s', code = '%s', symbol_left = '%s', symbol_right = '%s', decimal_point = '%s', thousands_point = '%s', decimal_places = '%s', value = '%s', last_updated = %d where currencies_id = %d", $edit['title'], $edit['code'], $edit['symbol_left'], $edit['symbol_right'], $edit['decimal_point'], $edit['thousands_point'], $edit['decimal_places'], $edit['value'], time(), $edit['currencies_id']); + $status = SAVE_UPDATED; + } + //Delete currency + else if ($edit['currencies_id']) { + $status = ecurrency_del_currency($edit['currencies_id']); + } + //Add new currency + else { + $edit['currencies_id'] = db_next_id('{ec_ecurrency}_currencies_id'); + db_query("INSERT INTO {ec_ecurrency} (currencies_id, title, code, symbol_left, symbol_right, decimal_point, thousands_point, decimal_places, value, last_updated) VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)", $edit['currencies_id'], $edit['title'], $edit['code'], $edit['symbol_left'], $edit['symbol_right'], $edit['decimal_point'], $edit['thousands_point'], $edit['decimal_places'], $edit['value'], time()); + $status = SAVED_NEW; + } + return $status; +} + +/** + * Delete currency from DB + */ +function ecurrency_del_currency($currencies_id) { + db_query("DELETE FROM {ec_ecurrency} WHERE currencies_id = %d", $currencies_id); + return SAVED_DELETED; +} + +?>