<?php
/**
 * @file
 * Install, update, and uninstall functions for the emergency module.
 */

/**
 * Implements hook_requirements().
 */
function emergency_requirements($phase) {
  $requirements = array();

  // Report on the current emergency level.
  if ($phase == 'runtime') {
    $levels = emergency_levels();
    $current = variable_get('emergency', '0');
    $requirements['emergency'] = array(
      'title' => t('Emergency level'),
      'value' => $levels[$current],
      'severity' => $current ? REQUIREMENT_INFO : REQUIREMENT_OK,
    );
  }

  return $requirements;
}

/**
 * Implements hook_schema().
 */
function emergency_schema() {
  $schema = array();

  // The emergency level definition table.
  $schema['emergency_level'] = array(
    'description' => 'Defines emergency levels.',
    'fields' => array(
      'type' => array(
        'description' => 'The machine-readable name of this level.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
      'name' => array(
        'description' => 'The human-readable name of this level.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'translatable' => TRUE,
      ),
      'weight' => array(
        'description' => 'The weight of this level in relation to other levels.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array('type'),

    // CTools export definition.
    'export' => array(
      'key' => 'type',
      'key name' => 'Type',
      'primary key' => 'type',
      'identifier' => 'level',
      'default hook' => 'default_emergency_level',
      'export type string' => 'export_type_string',
      'api' => array(
        'owner' => 'emergency',
        'api' => 'default_emergency_levels',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
  );

  // The emergency details table.
  $schema['emergency'] = array(
    'description' => 'Stores the last declaration of each emergency type.',
    'fields' => array(
      'type' => array(
        'description' => 'The {emergency_level}.type of this emergency.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
      'title' => array(
        'description' => 'The title or brief summary of this emergency.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'details' => array(
        'description' => 'The details of the emergency.',
        'type' => 'text',
        'size' => 'big',
        'not null' => FALSE,
        'translatable' => TRUE,
      ),
      'format' => array(
        'description' => 'The {filter_format}.format of the details.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => FALSE,
      ),
      'start' => array(
        'description' => 'The time at which the emergency was declared.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'end' => array(
        'description' => 'The scheduled time at which the emergency state will be cancelled.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'additional' => array(
        'description' => 'Additional details about the emergency.',
        'type' => 'text',
        'size' => 'big',
        'not null' => FALSE,
        'translatable' => TRUE,
      ),
    ),
    'primary key' => array('type'),
  );

  return $schema;
}

/**
 * Add the 'additional' field.
 */
function emergency_update_7100() {
  db_add_field('emergency', 'additional', array(
    'description' => 'Additional details about the emergency.',
    'type' => 'text',
    'size' => 'big',
    'not null' => FALSE,
    'translatable' => TRUE,
  ));
}