<?php
defined( 'ABSPATH' ) || exit;

/**
 * Shared admin date-range state (GET params -> cookie fallback -> normalized).
 *
 * Used by the admin shell (RT_WA_Analytics_Admin), the reports controller and
 * the leads controller so every screen renders against the same resolved range.
 */
trait RT_WA_Analytics_Date_Range {

	private $date_from          = '';
	private $date_to            = '';
	private $date_label         = '';
	private $has_explicit_range = false;

	private function resolve_date_range() {
		$date_from = isset( $_GET['date_from'] ) ? sanitize_text_field( wp_unslash( $_GET['date_from'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$date_to   = isset( $_GET['date_to'] ) ? sanitize_text_field( wp_unslash( $_GET['date_to'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended

		if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date_from ) ) {
			$date_from = '';
		}
		if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date_to ) ) {
			$date_to = '';
		}

		if ( empty( $date_from ) || empty( $date_to ) ) {
			$cookie  = isset( $_COOKIE['rt_wa_admin_date_range'] ) ? sanitize_text_field( wp_unslash( $_COOKIE['rt_wa_admin_date_range'] ) ) : '';
			$decoded = $cookie ? json_decode( $cookie, true ) : null;
			if ( is_array( $decoded ) && ! empty( $decoded['from'] ) && ! empty( $decoded['to'] ) ) {
				if ( preg_match( '/^\d{4}-\d{2}-\d{2}$/', $decoded['from'] ) && preg_match( '/^\d{4}-\d{2}-\d{2}$/', $decoded['to'] ) ) {
					if ( empty( $date_from ) ) {
						$date_from = $decoded['from'];
					}
					if ( empty( $date_to ) ) {
						$date_to = $decoded['to'];
					}
				}
			}
		}

		list($date_from, $date_to) = RT_WA_Analytics_DB::normalize_date_range( $date_from, $date_to );

		$this->date_from          = $date_from;
		$this->date_to            = $date_to;
		$this->date_label         = $date_from === $date_to
			? date_i18n( 'M j, Y', strtotime( $date_from ) )
			: date_i18n( 'M j', strtotime( $date_from ) ) . ' — ' . date_i18n( 'M j, Y', strtotime( $date_to ) );
		$this->has_explicit_range = isset( $_GET['date_from'] ) || isset( $_GET['date_to'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	}
}