<?php
/**
 * @file
 * Openlayers module - installation procedure.
 */

/**
 * Implements hook_uninstall().
 */
function openlayers_uninstall() {
  // Get module variables.
  global $conf;
  foreach (array_keys($conf) as $key) {
    // Find variables that have the module prefix.
    if (strpos($key, 'openlayers_') === 0) {
      variable_del($key);
    }
  }
}

/**
 * Implements hook_schema().
 */
function openlayers_schema() {
  $schema = array();
  // Maps table (ctools extras).
  $schema['openlayers_maps'] = array(
    'description' => 'Storage for User defined Openlayers maps.',
    'export' => array(
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_map',
      'default hook' => 'default_openlayers_maps',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_maps',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'description' => 'The primary identifier for the map.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'name' => array(
        'description' => 'The title of the map.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
      ),
      'description' => array(
        'description' => 'The description of the map.',
        'type' => 'text',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Map service.',
      ),
      'options' => array(
        'description' => 'The serialized map.',
        'type' => 'text',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Layers table (ctools extras).
  $schema['openlayers_layers'] = array(
    'description' => 'Storage for user defined Openlayers layers.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_layer',
      'default hook' => 'default_openlayers_layers',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_layers',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Layer system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Layer name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Layer description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Layer service.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Layer options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Sources table (ctools extras).
  $schema['openlayers_sources'] = array(
    'description' => 'Storage for user defined Openlayers sources.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_source',
      'default hook' => 'default_openlayers_sources',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_sources',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Source system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Source name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Source description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Service class.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Source options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Controls table.
  $schema['openlayers_controls'] = array(
    'description' => 'Storage for user defined Openlayers controls.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_control',
      'default hook' => 'default_openlayers_controls',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_controls',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Control system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Control name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Control description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Control service.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Control options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Interactions table.
  $schema['openlayers_interactions'] = array(
    'description' => 'Storage for user defined Openlayers interactions.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_interaction',
      'default hook' => 'default_openlayers_interactions',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_interactions',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Interaction system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Interaction name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Interaction description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Interaction service.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Interaction options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Components table.
  $schema['openlayers_components'] = array(
    'description' => 'Storage for user defined Openlayers components.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_component',
      'default hook' => 'default_openlayers_components',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_components',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Component system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Component name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Component description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Component service.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Component options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Projections table.
  $schema['openlayers_projections'] = array(
    'description' => 'Storage for user defined Openlayers projections.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_projection',
      'default hook' => 'default_openlayers_projections',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_projections',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Projection system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Projection name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Projection description.',
      ),
      'definition' => array(
        'type' => 'text',
        'description' => 'Projection options definition.',
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  // Styles table.
  $schema['openlayers_styles'] = array(
    'description' => 'Storage for user defined Openlayers styles.',
    'export' => array(
      'admin_title' => 'machine_name',
      'key' => 'machine_name',
      'key name' => 'Machine name',
      'primary key' => 'machine_name',
      'identifier' => 'ol_style',
      'default hook' => 'default_openlayers_styles',
      'cache defaults' => TRUE,
      'api' => array(
        'owner' => 'openlayers',
        'api' => 'default_openlayers_styles',
        'minimum_version' => 1,
        'current_version' => 1,
      ),
    ),
    'fields' => array(
      'machine_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Style system name.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
        'default' => '',
        'description' => 'Style name.',
      ),
      'description' => array(
        'type' => 'text',
        'description' => 'Style description.',
      ),
      'factory_service' => array(
        'type' => 'text',
        'description' => 'Style service.',
      ),
      'options' => array(
        'type' => 'text',
        'description' => 'Style options serialized.',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('machine_name'),
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );
  return $schema;
}

/**
 * Implements hook__requirements().
 */
function openlayers_requirements($phase) {
  $requirements = array();
  $t = get_t();

  if ($phase != 'install') {
    if (($library = libraries_detect('openlayers3')) && !empty($library['installed'])) {
      $requirements['openlayers3'] = array(
        'title' => $t('Openlayers'),
        'severity' => REQUIREMENT_OK,
        'value' => $t('Openlayers %version installed at %path', array('%path' => $library['library path'], '%version' => $library['version'])),
      );
    }
    else {
      $requirements['openlayers3'] = array(
        'title' => $t('Openlayers'),
        'severity' => REQUIREMENT_ERROR,
        'value' => $t('Openlayers library was not found. To install it, <a href="@url">download it manually</a> or use <em>drush dl-openlayers</em>. The library directory must be named <em>openlayers3</em> to be recognized by this module.', array('@url' => $library['download url'])),
      );
    }
  }

  return $requirements;
}

/**
 * Update to the 3.x version.
 */
function openlayers_update_7350() {

  // Enable new dependencies.
  $dependencies = array(
    'registry_autoload',
    'service_container',
  );
  foreach ($dependencies as $module) {
    if (!module_exists($module)) {
      $enabled = module_enable(array($module));
      if (!$enabled) {
        throw new DrupalUpdateException('Could not enable ' . $module . ' module. Make sure it exists and try again.');
      }
    }
  }

  // Ensure update 7201 is done.
  if (db_table_exists('openlayers_map_presets')) {
    // Change table name.
    db_rename_table('openlayers_map_presets', 'openlayers_maps');
    // Set default map variable.
    variable_set('openlayers_default_map', variable_get('openlayers_default_preset', 'default'));
    variable_del('openlayers_default_preset');
  }

  $schema = openlayers_schema();
  // Create missing tables.
  foreach ($schema as $table => $table_schema) {
    if (!db_table_exists($table)) {
      db_create_table($table, $table_schema);
    }
  }
  // Add the machine name column - and deal with the title column.
  foreach ($schema as $table => $table_schema) {
    if (isset($table_schema['fields']['machine_name']) && db_field_exists($table, 'name') && !db_field_exists($table, 'machine_name')) {
      // Add field and index.
      db_add_field($table, 'machine_name', $table_schema['fields']['machine_name'], array('machine_name' => array('machine_name')));
      db_query('UPDATE {' . $table . '} SET machine_name = LOWER(name);');
      db_drop_primary_key($table);
      db_add_primary_key($table, array('machine_name'));
      db_drop_index($table, 'name');

      // If there's a title field this is the new content for name.
      if (db_field_exists($table, 'title')) {
        db_query('UPDATE {' . $table . '} SET name = title;');
        db_drop_field($table, 'title');
      }
    }
    // If there's a data field but none is defined in the schema drop it.
    // @TODO This leads to data loss! Can we do anything better?
    if (!isset($table_schema['data']) && db_field_exists($table, 'data')) {
      db_drop_field($table, 'data');
    }
  }
  // Create missing columns.
  foreach ($schema as $table => $table_schema) {
    foreach (array_keys($table_schema['fields']) as $field) {
      if (!db_field_exists($table, $field)) {
        db_add_field($table, $field, $table_schema['fields'][$field]);
      }
    }
  }
  // Drop extra projection columns.
  // @TODO This ALSO leads to data loss! Can we do anything better?
  $old_projection_columns = array(
    'identifier',
    'authority',
    'code',
    'definition',
    'projectedextentleft',
    'projectedextentbottom',
    'projectedextentright',
    'projectedextenttop',
  );
  foreach ($old_projection_columns as $column) {
    if (db_field_exists('openlayers_projections', $column)) {
      db_drop_field('openlayers_projections', $column);
    }
  }
  // Truncate the styles table to remove old OL 2.x styles.
  // @TODO Yes... more data loss...
  db_query('TRUNCATE {openlayers_styles}');
}

/**
 * Update factory_service property of each OL objects.
 */
function openlayers_update_7360() {
  $tables = openlayers_schema();
  foreach ($tables as $table => $table_data) {
    if (!isset($table_data['fields']['factory_service'])) {
      continue;
    }

    $plugin_type = array_pop(explode('_', $table_data['export']['identifier']));
    $fs_before = 'openlayers.' . $plugin_type . '.';
    $fs_after = 'openlayers.' . drupal_ucfirst($plugin_type) . '.';

    db_update($table)
      ->expression('factory_service', 'REPLACE(factory_service, :before, :after)', array(':before' => $fs_before, ':after' => $fs_after))
      ->execute();
  }
}

/**
 * Update factory_service property of each OL objects to remove '.internal.'.
 */
function openlayers_update_7370() {
  $tables = openlayers_schema();
  foreach ($tables as $table => $table_data) {
    if (!isset($table_data['fields']['factory_service'])) {
      continue;
    }

    $fs_before = '.internal.';
    $fs_after = ':';

    db_update($table)
      ->expression('factory_service', 'REPLACE(factory_service, :before, :after)', array(':before' => $fs_before, ':after' => $fs_after))
      ->execute();
  }
}

/**
 * Make sure that the submodule service_container_symfony from
 * module service_container is properly enabled.
 */
function openlayers_update_7380() {
  if (!module_exists('service_container_symfony')) {
    $enabled = module_enable(array('service_container_symfony'));
    if (!$enabled) {
      throw new DrupalUpdateException('Unable to enable the module service_container_symfony from service_container.');
    }
  }
}

/**
 * Make sure that the submodule service_container_annotation_discovery
 * from module service_container is properly enabled.
 */
function openlayers_update_7390() {
  if (!module_exists('service_container_annotation_discovery')) {
    $enabled = module_enable(array('service_container_annotation_discovery'));
    if (!$enabled) {
      throw new DrupalUpdateException('Unable to enable the module service_container_annotation_discovery from service_container.');
    }
  }
}