<?php
/**
 * Handles the Opt-in status for the site.
 *
 * @since 1.0.0
 *
 * @package StellarWP\Telemetry
 */

namespace TEC\Common\StellarWP\Telemetry\Opt_In;

use TEC\Common\StellarWP\Telemetry\Config;
use TEC\Common\StellarWP\Telemetry\Core;

/**
 * Class for handling the Opt-in status for the site.
 *
 * @since 1.0.0
 *
 * @package StellarWP\Telemetry
 */
class Status {
	public const OPTION_NAME           = 'stellarwp_telemetry';
	public const OPTION_NAME_USER_INFO = 'stellarwp_telemetry_user_info';
	public const STATUS_ACTIVE         = 1;
	public const STATUS_INACTIVE       = 2;

	/**
	 * Gets the option name used to store the opt-in status.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public function get_option_name() {
		/**
		 * Filters the option name used to store the opt-in status.
		 *
		 * @since 1.0.0
		 *
		 * @param string $option_name
		 */
		return apply_filters( 'stellarwp/telemetry/' . Config::get_hook_prefix() . 'option_name', self::OPTION_NAME );
	}

	/**
	 * Gets the current opt-in status.
	 *
	 * @since 1.0.0
	 *
	 * @return array
	 */
	public function get_option() {
		$option = get_option( $this->get_option_name(), [] );

		return is_array( $option ) ? $option : [];
	}

	/**
	 * Gets the current Opt-in status.
	 *
	 * The status is stored as an integer because there are multiple possible statuses:
	 * 1 = Active
	 * 2 = Inactive
	 *
	 * @since 1.0.0
	 * @since 2.0.1 Correct logic so it is not subject to the order of the plugins.
	 * @since 2.2.0 Update to remove unnecessary "mixed" status.
	 *
	 * @return integer The status value.
	 */
	public function get() {

		$status  = self::STATUS_INACTIVE;
		$option  = $this->get_option();
		$plugins = $option['plugins'] ?? [];

		if ( count( $plugins ) === 0 ) {
			$status = self::STATUS_INACTIVE;
		}

		foreach ( $plugins as $plugin ) {

			// If any plugins are missing an optin status or at least one is false, set status to false.
			if ( ! isset( $plugin['optin'] ) || false === $plugin['optin'] ) {
				$status = self::STATUS_INACTIVE;
				break;
			}

			$status = self::STATUS_ACTIVE;
		}

		/**
		 * Filters the opt-in status value.
		 *
		 * @since 1.0.0
		 *
		 * @param integer $status The opt-in status value.
		 */
		return apply_filters( 'stellarwp/telemetry/' . Config::get_hook_prefix() . 'optin_status', $status );
	}

	/**
	 * Gets the site auth token.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public function get_token() {
		$option = $this->get_option();

		/**
		 * Filters the site auth token.
		 *
		 * @since 1.0.0
		 *
		 * @param string $token The site's auth token.
		 */
		return apply_filters( 'stellarwp/telemetry/' . Config::get_hook_prefix() . 'token', $option['token'] ?? '' );
	}

	/**
	 * Determines if the plugin slug exists in the opt-in option array.
	 *
	 * @since 1.0.0
	 *
	 * @param string $stellar_slug The plugin's unique slug.
	 *
	 * @return boolean
	 */
	public function plugin_exists( string $stellar_slug ) {
		$option  = $this->get_option();
		$plugins = $option['plugins'] ?? [];

		return array_key_exists( $stellar_slug, $plugins );
	}

	/**
	 * Adds a plugin slug to the opt-in option array.
	 *
	 * @since 1.0.0
	 *
	 * @param string  $stellar_slug    The unique slug identifier for the plugin.
	 * @param boolean $status          The opt-in status for the plugin.
	 * @param string  $plugin_basename The specific basename for the plugin.
	 *
	 * @return boolean
	 */
	public function add_plugin( string $stellar_slug, bool $status = false, string $plugin_basename = '' ) {
		$option = $this->get_option();

		if ( '' === $plugin_basename ) {
			$plugin_basename = Config::get_container()->get( Core::PLUGIN_BASENAME );
		}

		$option['plugins'][ $stellar_slug ] = [
			'wp_slug' => $plugin_basename,
			'optin'   => $status,
		];

		return update_option( $this->get_option_name(), $option );
	}

	/**
	 * Removes a plugin slug from the opt-in option array.
	 *
	 * @since 1.0.0
	 *
	 * @param string $stellar_slug The slug to remove from the option.
	 *
	 * @return boolean
	 */
	public function remove_plugin( string $stellar_slug ) {
		$option = $this->get_option();

		// Bail early if the slug does not exist in the option.
		if ( ! isset( $option['plugins'][ $stellar_slug ] ) ) {
			return false;
		}

		unset( $option['plugins'][ $stellar_slug ] );

		return update_option( $this->get_option_name(), $option );
	}

	/**
	 * Get an array of opted-in plugins.
	 *
	 * @since 1.0.0
	 *
	 * @return array<int, array<string, string>>
	 */
	public function get_opted_in_plugins() {
		$option           = $this->get_option();
		$site_plugins_dir = Config::get_container()->get( Core::SITE_PLUGIN_DIR );
		$opted_in_plugins = [];

		// If the status option is not an option, return early.
		if ( ! isset( $option['plugins'] ) ) {
			return $opted_in_plugins;
		}

		foreach ( $option['plugins'] as $stellar_slug => $plugin ) {
			if ( ! isset( $plugin['wp_slug'] ) ) {
				continue;
			}

			$plugin_data = get_plugin_data( trailingslashit( $site_plugins_dir ) . $plugin['wp_slug'] );

			if ( isset( $plugin['optin'] ) && true === $plugin['optin'] ) {
				$opted_in_plugins[] = [
					'slug'    => $stellar_slug,
					'version' => $plugin_data['Version'],
				];
			}
		}

		return $opted_in_plugins;
	}

	/**
	 * Sets the opt-in status option for the site.
	 *
	 * @since 1.0.0
	 * @since 2.0.0 - Updated to allow defined stellar_slug.
	 *
	 * @param boolean $status       The status to set.
	 * @param string  $stellar_slug The stellar_slug to set the status of.
	 *
	 * @return boolean
	 */
	public function set_status( bool $status, string $stellar_slug = '' ) {
		// If no stellar slug is passed, use the singular value.
		if ( '' === $stellar_slug ) {
			$stellar_slug = Config::get_stellar_slug();
		}

		$option = $this->get_option();

		$option['plugins'][ $stellar_slug ]['optin'] = $status;

		return update_option( $this->get_option_name(), $option );
	}

	/**
	 * Gets the site's opt-in status label.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public function get_status() {

		$optin_label = '';

		switch ( $this->get() ) {
			case 1:
				$optin_label = esc_html__( 'Active', 'stellarwp-telemetry' );
				break;
			case 2:
				$optin_label = esc_html__( 'Inactive', 'stellarwp-telemetry' );
				break;
		}

		/**
		 * Filters the opt-in status label.
		 *
		 * @since 1.0.0
		 *
		 * @param string $optin-Label
		 */
		return apply_filters( 'stellarwp/telemetry/' . Config::get_hook_prefix() . 'optin_status_label', $optin_label );
	}

	/**
	 * Determines if the opt-in status is active.
	 *
	 * @since 1.0.0
	 *
	 * @return boolean
	 */
	public function is_active(): bool {
		return $this->get() === self::STATUS_ACTIVE;
	}
}
