<?php

/**
 * Change teams abbreviations into short names.
 */
add_action( 'admin_init', function() {

	/**
	 * Admin(s) only.
	 */
	if ( ! current_user_can( 'manage_options' ) ) {
		return;
	}

	/**
	 * Skip AJAX.
	 */
	if ( wp_doing_ajax() ) {
		return;
	}

	/**
	 * Teams with an abbreviation but not a short name.
	 */
	$teams = get_posts( [
		'post_type' => 'sp_team',
		'numberposts' => -1,
		'meta_query' => [
			[
				'key' => 'sp_abbreviation',
			],
			[
				'key' => 'sp_short_name',
				'value' => '',
			],
		],
	] );

	if ( ! $teams ) {
		return;
	}

	$updated .= '';
	$i = 0;
	foreach ( $teams as $team ) {
		$abbreviation = get_post_meta( $team->ID, 'sp_abbreviation', true );
		if ( ! strlen( $abbreviation ) ) {
			delete_post_meta( $team->ID, 'sp_abbreviation' );
			continue;
		}
		$i++;
		$updated .= sprintf( '%03d. %s &mdash; %s<br>', $i, $team->post_title, $abbreviation );
		delete_post_meta( $team->ID, 'sp_abbreviation' );
		delete_post_meta( $team->ID, 'sp_short_name' );
		add_post_meta( $team->ID, 'sp_short_name', $abbreviation, true );
	}

	$title = 'teams abbreviations changed into short names';

	$output = '';
	$output .= sprintf( '<h2>%d %s</h2>', $i, $title );
	$output .= sprintf( '<p>%s</p>', $updated );
	$output .= '<p style="color: #dc3232; font-weight: bold">You should now delete the code from your installation, otherwise you won\'t be able to save abbreviations.<p>';
	$output .= sprintf( '<p><a href="%s">Go to teams page</a>', admin_url( 'edit.php?post_type=sp_team' ) );

	wp_die( $output, $title );
} );