Migration_24.php
| 1 | <?php |
| 2 | |
| 3 | namespace IAWP\Migrations; |
| 4 | |
| 5 | use IAWP\Query; |
| 6 | /** @internal */ |
| 7 | class Migration_24 extends \IAWP\Migrations\Step_Migration |
| 8 | { |
| 9 | /** |
| 10 | * @return int |
| 11 | */ |
| 12 | protected function database_version() : int |
| 13 | { |
| 14 | return 24; |
| 15 | } |
| 16 | /** |
| 17 | * @return array |
| 18 | */ |
| 19 | protected function queries() : array |
| 20 | { |
| 21 | return [$this->add_column(), $this->insert_campaigns(), $this->link_sessions_with_campaigns(), $this->delete_unused_campaigns()]; |
| 22 | } |
| 23 | private function add_column() : string |
| 24 | { |
| 25 | $campaigns_table = Query::get_table_name(Query::CAMPAIGNS); |
| 26 | return "\n ALTER TABLE {$campaigns_table}\n ADD COLUMN landing_page_title VARCHAR(128) AFTER campaign_id\n "; |
| 27 | } |
| 28 | private function insert_campaigns() : string |
| 29 | { |
| 30 | $views_table = Query::get_table_name(Query::VIEWS); |
| 31 | $sessions_table = Query::get_table_name(Query::SESSIONS); |
| 32 | $campaigns_table = Query::get_table_name(Query::CAMPAIGNS); |
| 33 | $resources_table = Query::get_table_name(Query::RESOURCES); |
| 34 | return "\n INSERT INTO {$campaigns_table} (landing_page_title, utm_source, utm_medium, utm_campaign, utm_term, utm_content)\n SELECT DISTINCT\n initial_resource.cached_title,\n campaigns.utm_source,\n campaigns.utm_medium,\n campaigns.utm_campaign,\n campaigns.utm_term,\n campaigns.utm_content\n FROM {$resources_table} AS initial_resource\n JOIN {$views_table} AS initial_view ON initial_resource.id = initial_view.resource_id\n JOIN {$sessions_table} AS sessions ON initial_view.session_id = sessions.session_id AND initial_view.id = sessions.initial_view_id\n JOIN {$campaigns_table} AS campaigns ON sessions.campaign_id = campaigns.campaign_id \n "; |
| 35 | } |
| 36 | private function link_sessions_with_campaigns() : string |
| 37 | { |
| 38 | $views_table = Query::get_table_name(Query::VIEWS); |
| 39 | $sessions_table = Query::get_table_name(Query::SESSIONS); |
| 40 | $campaigns_table = Query::get_table_name(Query::CAMPAIGNS); |
| 41 | $resources_table = Query::get_table_name(Query::RESOURCES); |
| 42 | return "\n UPDATE {$sessions_table} AS sessions\n JOIN {$views_table} AS initial_view ON initial_view.session_id = sessions.session_id AND sessions.initial_view_id = initial_view.id\n JOIN {$resources_table} AS initial_resource ON initial_view.resource_id = initial_resource.id\n JOIN {$campaigns_table} AS campaigns ON sessions.campaign_id = campaigns.campaign_id\n JOIN {$campaigns_table} AS new_campaign ON initial_resource.cached_title = new_campaign.landing_page_title\n AND campaigns.utm_source = new_campaign.utm_source\n AND campaigns.utm_medium = new_campaign.utm_medium\n AND campaigns.utm_campaign = new_campaign.utm_campaign\n AND (campaigns.utm_term = new_campaign.utm_term OR (campaigns.utm_term IS NULL AND new_campaign.utm_term IS NULL))\n AND (campaigns.utm_content = new_campaign.utm_content OR (campaigns.utm_content IS NULL AND new_campaign.utm_content IS NULL))\n SET sessions.campaign_id = new_campaign.campaign_id \n "; |
| 43 | } |
| 44 | private function delete_unused_campaigns() : string |
| 45 | { |
| 46 | $sessions_table = Query::get_table_name(Query::SESSIONS); |
| 47 | $campaigns_table = Query::get_table_name(Query::CAMPAIGNS); |
| 48 | return "\n DELETE campaigns from {$campaigns_table} AS campaigns\n LEFT JOIN {$sessions_table} AS sessions ON campaigns.campaign_id = sessions.campaign_id\n WHERE sessions.session_id IS NULL \n "; |
| 49 | } |
| 50 | } |
| 51 |