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<?php

namespace VSP\Modules\Addons;

defined( 'ABSPATH' ) || exit;

use VSP\Base;

/**
 * Class Core
 *
 * @package VSP\Modules\Addons
 * @author Varun Sridharan <varunsridharan23@gmail.com>
 */
abstract class Core extends Base {
    /**
     * Set To True If its in Display Mode.
     *
     * @var bool
     */
    protected $in_display = false;

    /**
     * Stores Default Categories.
     *
     * @var array
     */
    protected static $default_addon_cats = array();

    /**
     * Stores Required Plugins Status.
     *
     * @var array
     */
    protected static $required_plugins_status = array();

    /**
     * Stores Addon Categorys List.
     *
     * @var array
     */
    protected $addon_cats = array();

    /**
     * Stores All Adodns Count.
     *
     * @var array
     */
    protected $addon_counts = array();

    /**
     * Stores All Addon Information
     *
     * @var array
     */
    protected $addons = array();

    /**
     * Stores Default Headers.
     *
     * @var array
     */
    protected $default_headers = array(
        'file'             => false,
        'name'             => '',
        'url'              => '',
        'version'          => '',
        'description'      => '',
        'author'           => '',
        'author_url'       => '',
        'last_updated'     => '',
        'category'         => '',
        'required_plugins' => array(),
        'screenshots'      => array(),
    );

    /**
     * Stores All Active Addons.
     *
     * @var array
     */
    protected $active_addons = false;

    /**
     * @var array
     */
    protected $headers = array();

    /**
     * Searchs For Addons.
     *
     * @return array
     */
    protected function search_addons() {
        $slug = $this->plugin();
        $dirs = apply_filters( $slug->slug( 'hook' ) . '/addons/dirs', array( $this->option( 'base_path' ) ) );

        if ( ! empty( $dirs ) ) {
            foreach ( $dirs as $dir ) {
                $addons = $this->search_addon_folder( $dir );
                if ( ! empty( $addons ) ) {
                    $this->get_addons_informations( $addons );
                }
            }
        }
        return $this->addons;
    }

    /**
     * Returns Only Selected Addon.
     *
     * @param string $addon
     *
     * @return bool|mixed
     */
    protected function search_addon( $addon ) {
        $this->search_addons();
        return ( isset( $this->addons[ $addon ] ) ) ? $this->addons[ $addon ] : false;
    }

    /**
     * Search For Addons in given folder.
     *
     * @param string $dir
     *
     * @return array
     */
    protected function search_addon_folder( $dir ) {
        $is_internal = ( vsp_unslashit( $dir ) === vsp_unslashit( $this->option( 'base_path' ) ) );
        $files       = vsp_get_file_paths( vsp_slashit( $dir ) . '*/addon.json' );
        $return      = array();
        foreach ( $files as $file ) {
            $dir = plugin_dir_path( $file );
            $url = plugin_dir_url( $file );
            $uid = md5( $dir );

            $return[ $uid ] = array(
                'uid'         => $uid, // Plugin UID MD5 Path
                'addon_url'   => $url, // Addon URL
                'addon_path'  => $dir, // Addon Path
                'is_internal' => $is_internal, //if the addon is an internal addon found in the main plugin itself
            );
        }
        return $return;
    }

    /**
     * Checks and returns addon information.
     *
     * @param array $addons
     */
    protected function get_addons_informations( $addons ) {
        if ( ! empty( $addons ) ) {
            foreach ( $addons as $addon ) {
                if ( isset( $addon['addon_path'] ) ) {
                    $data = $this->get_addon_information( $addon );
                    if ( ! empty( $data ) ) {
                        if ( ! isset( $this->addons[ $data['uid'] ] ) ) {
                            $this->addons[ $data['uid'] ] = $data;
                        }
                    }
                }
            }
        }
    }

    /**
     * Read's Addon's Information.
     *
     * @param array $addon
     *
     * @return array
     */
    protected function get_addon_information( $addon ) {
        $data = $this->read_addon_json( $addon['addon_path'] );

        if ( empty( $data['file'] ) && file_exists( $addon['addon_path'] . '/addon.php' ) ) {
            $data['file'] = 'addon.php';
        }

        if ( ! empty( $data ) && ! empty( $data['file'] ) ) {
            $data                               = $this->parse_args( $data, $addon );
            $data['required_plugins']           = ( isset( $data['required_plugins'] ) ) ? $data['required_plugins'] : array();
            $data['required_plugins']           = $this->handle_required_plugins( $data['required_plugins'] );
            $data['required_plugins_fulfilled'] = 0;
            $total                              = count( $data['required_plugins'] );
            foreach ( $data['required_plugins'] as $plugins ) {
                if ( 'active' === $plugins['status'] ) {
                    $data['required_plugins_fulfilled'] = $data['required_plugins_fulfilled'] + 1;
                }
            }
            $data['required_plugins_fulfilled'] = ( $data['required_plugins_fulfilled'] > 0 && $total === $data['required_plugins_fulfilled'] );

            if ( $this->in_display ) {
                $data['category']     = ( isset( $data['category'] ) ) ? $data['category'] : array();
                $data['category']     = $this->handle_category( $data['category'] );
                $data['screenshots']  = ( isset( $data['screenshots'] ) ) ? $data['screenshots'] : array();
                $data['screenshots']  = $this->handle_screenshots( $data['screenshots'], $data );
                $data['icon']         = ( isset( $data['icon'] ) ) ? $data['icon'] : 'icon.png';
                $data['icon']         = $this->handle_icon( $data['icon'], $addon );
                $data['last_updated'] = $this->handle_last_updated( $data['last_updated'] );
            }
        } else {
            return array();
        }
        return $data;
    }

    /**
     * Handles Date Format.
     *
     * @param string $last_updated
     *
     * @return string
     */
    protected function handle_last_updated( $last_updated ) {
        return ( ! empty( $last_updated ) ) ? date( vsp_date_format(), strtotime( $last_updated ) ) : $last_updated;
    }

    /**
     * Handles Addon Icon.
     *
     * @param string $icon
     * @param array  $addon
     *
     * @return string
     */
    protected function handle_icon( $icon, $addon ) {
        if ( $icon ) {
            if ( true !== wponion_is_url( $icon ) && file_exists( $addon['addon_path'] . $icon ) ) {
                return $addon['addon_url'] . $icon;
            } elseif ( true === wponion_is_url( $icon ) ) {
                return $icon;
            }
        }
        return vsp_placeholder_img();
    }

    /**
     * Handles Each Addons Required Plugins.
     *
     * @param array $plugins
     *
     * @return mixed
     */
    protected function handle_required_plugins( $plugins ) {
        if ( ! empty( $plugins ) ) {
            foreach ( $plugins as $slug => $plugin ) {
                $plugins[ $slug ] = $this->parse_args( $plugin, array(
                    'name'    => null,
                    'author'  => null,
                    'version' => null,
                    'url'     => null,
                ) );

                if ( false === wp_is_plugin_installed( $slug ) ) {
                    $plugins[ $slug ]['status'] = 'notexists';
                } elseif ( wp_is_plugin_inactive( $slug ) ) {
                    $plugins[ $slug ]['status'] = 'exists';
                } elseif ( wp_is_plugin_active( $slug ) ) {
                    $plugins[ $slug ]['status'] = 'active';
                }
            }
        }
        return $plugins;
    }

    /**
     * Handles Addon Category.
     *
     * @param array|string $category
     *
     * @return array
     */
    protected function handle_category( $category ) {
        if ( empty( $category ) ) {
            return array( 'general', 'all' );
        }
        $category = ( is_string( $category ) ) ? explode( ',', $category ) : $category;
        $new      = array( 'all' );

        foreach ( $category as $cat ) {
            $sub_cats = explode( ',', $cat );
            foreach ( $sub_cats as $_cat ) {
                $_cat = trim( $_cat );
                $slug = sanitize_title( $_cat );
                if ( ! isset( $this->addon_cats[ $slug ] ) ) {
                    $this->addon_cats[ $slug ]   = $_cat;
                    $this->addon_counts[ $slug ] = 0;
                }
                $this->addon_counts[ $slug ]++;
                $new[] = $slug;
            }
        }
        return array_unique( $new );
    }

    /**
     * Handles Addon Screenshots.
     *
     * @param array $screenshots
     * @param array $addon
     *
     * @return mixed
     */
    protected function handle_screenshots( $screenshots, $addon ) {
        if ( ! empty( $screenshots ) && is_array( $screenshots ) ) {
            $return = array();
            foreach ( $screenshots as $key => $screenshot ) {
                $s       = explode( '|', $screenshot, 2 );
                $src     = false;
                $content = false;
                if ( isset( $s[0] ) && isset( $s[1] ) ) {
                    $content = $s[1];
                    if ( true !== wponion_is_url( $s[0] ) && file_exists( $addon['addon_path'] . $s[0] ) ) {
                        $src = $addon['addon_url'] . $s[0];
                    } elseif ( true === wponion_is_url( $s[0] ) ) {
                        $src = $s[0];
                    }
                } elseif ( isset( $s[0] ) && ! isset( $s[1] ) ) {
                    if ( true !== wponion_is_url( $s[0] ) && file_exists( $addon['addon_path'] . $s[0] ) ) {
                        $src = $addon['addon_url'] . $s[0];
                    } elseif ( true === wponion_is_url( $s[0] ) ) {
                        $src = $s[0];
                    }
                }

                $return[] = array(
                    'src'     => $src,
                    'content' => $content,
                );
            }
            return $return;
        }
        return $screenshots;
    }

    /**
     * Reads Addon's JSON file.
     *
     * @param string $path addon json file path.
     * @param bool   $raw If set to true then it returns raw information that is passed in addon.json
     *
     * @return array|mixed|object
     */
    protected function read_addon_json( $path, $raw = false ) {
        $return = array();
        if ( file_exists( vsp_slashit( $path ) . 'addon.json' ) ) {
            $return = json_decode( @file_get_contents( vsp_slashit( $path ) . 'addon.json' ), true );
            if ( false === $raw && is_array( $return ) && ! empty( $return ) ) {
                $return = $this->parse_args( $return, $this->headers );
            }
        }
        return ( is_array( $return ) && ! empty( $return ) ) ? $return : array();
    }
}