<?php

/**
 * @file
 * webform_chart.install
 *
 * Provides installing functions for the webform_chart module.
 */

/**
 * Implements hook_schema_alter().
 */
function webform_chart_schema_alter(&$schema) {
  // Add charting settings to the global webform setting.
  if (isset($schema['webform'])) {
    // Add field to existing schema.
    $schema['webform']['fields']['charting'] = array(
      'type'        => 'text',
      'description' => 'Webform charting global configuration.',
    );
  }
  // Add component charting settings to component setting.
  if (isset($schema['webform_component'])) {
    // Add field to existing schema.
    $schema['webform_component']['fields']['charting'] = array(
      'type'        => 'text',
      'description' => 'Charting settings for this component.',
    );
  }
}

/**
 * Implements hook_install().
 */
function webform_chart_install() {

  $schema['webform'] = array();
  $schema['webform_component'] = array();
  webform_chart_schema_alter($schema);

  // Update the webform table according to schema_alter/
  foreach ($schema['webform']['fields'] as $name => $spec) {
    db_add_field('webform', $name, $spec);
  }
  // Update the webform_component table according to schema_alter.
  foreach ($schema['webform_component']['fields'] as $name => $spec) {
    db_add_field('webform_component', $name, $spec);
  }
}

/**
 * Install the database for the first time.
 */
function webform_chart_update_7000() {

  webform_chart_install();

  return t('The update has correctly installed the database.');
}

/**
 * Get ready for Webform Chart 7.x-1.0-rc3.
 */
function webform_chart_update_7001() {

  webform_chart_uninstall();
  webform_chart_install();

  return t('The update has correctly reset the webform chart configurations.');
}

/**
 * Implements hook_uninstall().
 */
function webform_chart_uninstall() {
  $schema['webform'] = array();
  $schema['webform_component'] = array();
  webform_chart_schema_alter($schema);

  // Delete the webform table according to schema_alter.
  foreach ($schema['webform']['fields'] as $name => $spec) {
    db_drop_field('webform', $name);
  }
  // Delete the webform_component table according to schema_alter.
  foreach ($schema['webform_component']['fields'] as $name => $spec) {
    db_drop_field('webform_component', $name);
  }
}