<?php

namespace Give\DonorDashboards\Admin;

/**
 * @since 2.10.0
 */
class Settings
{

    /**
     * Register settings related to Donor Profiles
     *
     * @since 2.10.0
     *
     * @param array $settings
     *
     * @return array
     *
     */
    public function register($settings)
    {
        $donorDashboardSettings = [
            $this->getDonorDashboardPageSetting(),
            $this->donorDashboardPageIsPublished() ? $this->getOverrideLegacyDonationManagementPagesSetting() : null,
        ];

        return give_settings_array_insert(
            $settings,
            'history_page',
            $donorDashboardSettings
        );
    }

    /**
     * Return true if donor profile page is defined and published, false if not
     *
     * @since 2.10.0
     * @return boolean
     *
     */
    protected function donorDashboardPageIsPublished()
    {
        $donorDashboardPageId = ! empty(give_get_option('donor_dashboard_page')) ? give_get_option(
            'donor_dashboard_page'
        ) : null;

        return $donorDashboardPageId && get_post_status($donorDashboardPageId) === 'publish';
    }

    /**
     * Return CMB2 compatible array used to render/control donor profile page setting
     *
     * @since 2.10.0
     * @return array
     *
     */
    protected function getDonorDashboardPageSetting()
    {
        $generateDonorDashboardPageUrl = add_query_arg(
            [
                'give-generate-donor-dashboard-page' => '1',
            ],
            admin_url('edit.php')
        );

        $generateDonorDashboardPageDesc = $this->donorDashboardPageIsPublished() ? '' : sprintf(
            __(' Need helping setting one up? <a href="%s">Generate a new Donor Dashboard page.</a>', 'give'),
            $generateDonorDashboardPageUrl
        );

        return [
            'name' => __('Donor Dashboard Page', 'give'),
            'desc' => __(
                          'This is the page where donors can manage their information, review history and more -- all in one place. The Donor Dashboard block or <code>[give_donor_dashboard]</code> shortcode should be on this page. ',
                          'give'
                      ) . $generateDonorDashboardPageDesc,
            'id' => 'donor_dashboard_page',
            'type' => 'select',
            'class' => 'give-select give-select-chosen',
            'options' => give_cmb2_get_post_options(
                [
                    'post_type' => 'page',
                    'numberposts' => 30,
                ]
            ),
            'attributes' => [
                'data-search-type' => 'pages',
                'data-placeholder' => esc_html__('Choose a page', 'give'),
            ],
        ];
    }

    /**
     * Return CMB2 compatible array used to render/control override legacy donation management pages setting
     *
     * @since 2.10.0
     * @return array
     *
     */
    protected function getOverrideLegacyDonationManagementPagesSetting()
    {
        return [
            'name' => esc_html__('Override Legacy Donation Management Pages', 'give'),
            'desc' => esc_html__(
                'Use the Donor Dashboard instead of the legacy donation management pages (Donation History, Edit Profile, Subscriptions, etc).',
                'give'
            ),
            'id' => 'override_legacy_donation_management_pages',
            'wrapper_class' => 'override-legacy-donation-management-pages',
            'type' => 'radio_inline',
            'default' => 'enabled',
            'options' => [
                'enabled' => esc_html__('Enabled', 'give'),
                'disabled' => esc_html__('Disabled', 'give'),
            ],
        ];
    }

    /**
     * Generate donor profile page, and update site setting to use it
     *
     * @since 2.10.0
     * @return void
     *
     */
    public function generateDonorDashboardPage()
    {
        // Check if a Donor Dashboard page has already been created

        if ( ! empty(give_get_option('donor_dashboard_page'))) {
            return;
        }

        $content = $this->getDonorDashboardPageContent();

        $pageId = wp_insert_post(
            [
                'comment_status' => 'close',
                'ping_status' => 'close',
                'post_author' => 1,
                'post_title' => __('Donor Dashboard', 'give'),
                'post_status' => 'publish',
                'post_content' => $content,
                'post_type' => 'page',
            ]
        );

        if ($pageId) {
            give_update_option('donor_dashboard_page', $pageId);

            give_update_option('override_legacy_donation_management_pages', 'enabled');

            $overrideSettingsMap = [
                'history_page',
                'subscriptions_page',
            ];

            foreach ($overrideSettingsMap as $setting) {
                if (give_get_option($setting) !== $pageId) {
                    give_update_option($setting, $pageId);
                }
            }
        }
    }

    /**
     * Get default content for donor profile page, based on format (block vs shortcode)
     *
     * @since 2.10.0
     *
     * @param string $format
     *
     * @return string
     *
     */
    protected function getDonorDashboardPageContent()
    {
        if ($this->shouldGenerateWithBlock()) {
            return get_comment_delimited_block_content(
                'give/donor-dashboard',
                [
                    'align' => 'wide',
                ],
                null
            );
        } else {
            return '[give_donor_dashboard]';
        }
    }

    /**
     * Determine whether the Donor Dashboard page should be generated with a block
     *
     * @since 2.10.0
     * @return bool
     *
     */
    private function shouldGenerateWithBlock()
    {
        $usingBlocks = $this->isBlockEditorActive() || $this->isGutenbergEditorActive() ? true : false;
        $usingClassicEditor = $this->isClassicEditorActive();
        $usingDisableGutenberg = $this->isDisableGutenbergActive();

        if ($usingClassicEditor === false && $usingDisableGutenberg === false && $usingBlocks) {
            return true;
        }

        return false;
    }

    /**
     * Determine whether the Gutenberg editor is active
     *
     * @since 2.10.0
     * @return bool
     *
     */
    private function isGutenbergEditorActive()
    {
        if (has_filter('replace_editor', 'gutenberg_init')) {
            // Gutenberg is installed and activated.
            return true;
        }

        return false;
    }

    /**
     * Determine whether block editor is active
     *
     * @since 2.10.0
     * @return bool
     *
     */
    private function isBlockEditorActive()
    {
        if (version_compare($GLOBALS['wp_version'], '5.0-beta', '>')) {
            // Block editor.
            return true;
        }

        return false;
    }

    /**
     * Determine whether the Classic editor is active
     *
     * @since 2.10.0
     * @return bool
     *
     */
    private function isClassicEditorActive()
    {
        include_once ABSPATH . 'wp-admin/includes/plugin.php';

        if (is_plugin_active('classic-editor/classic-editor.php') && (get_option(
                                                                          'classic-editor-replace'
                                                                      ) !== 'no-replace')) {
            return true;
        }

        return false;
    }

    /**
     * Determine whether Disable Gutenberg plugin is active
     *
     * @since 2.10.0
     * @return bool
     *
     */
    private function isDisableGutenbergActive()
    {
        include_once ABSPATH . 'wp-admin/includes/plugin.php';

        if (is_plugin_active('disable-gutenberg/disable-gutenberg.php')) {
            return true;
        }

        return false;
    }

    /**
     * Filter and override legacy donation management page settings
     *
     * @since 2.10.0
     *
     * @param array $settings
     *
     * @return array
     *
     */
    public function overrideLegacyDonationManagementPageSettings($settings)
    {
        // Only override settings if the override legacy donation management pages setting is enabled
        if ($this->donorDashboardPageIsPublished() && give_is_setting_enabled(
                give_get_option('override_legacy_donation_management_pages', 'enabled')
            )) {
            $pageId = give_get_option('donor_dashboard_page');

            $overrideSettingsMap = [
                'history_page',
                'subscriptions_page',
            ];

            foreach ($overrideSettingsMap as $setting) {
                if (give_get_option($setting) !== $pageId) {
                    give_update_option($setting, $pageId);
                }
            }

            // Hide settings that are overridden by Donor Profile setting
            $key = 0;
            foreach ($settings as $setting) {
                if (in_array($setting['id'], $overrideSettingsMap)) {
                    unset($settings[$key]);
                }
                $key++;
            }
        }

        return $settings;
    }

}