<?php

class Swi_Foot_Blocks
{

    public function __construct()
    {
        // Register blocks immediately when this object is constructed.
        // The plugin constructs this class during the plugin init sequence,
        // so calling register_blocks() now ensures scripts/styles are registered
        // before `enqueue_block_editor_assets` runs later in the request.
        $this->register_blocks();
        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'));
        // Editor assets enqueued below; data endpoints are provided via REST (see includes/class-swi-foot-rest.php)
        add_action('enqueue_block_editor_assets', array($this, 'enqueue_editor_assets'));
    }

    public function register_blocks()
    {
        // Register blocks from metadata (block.json) and provide server-side render callbacks
        $base = dirname(__DIR__) . '/blocks';

        // Register editor script and styles from webpack build
        $editor_js_url = SWI_FOOT_PLUGIN_URL . 'assets/build/editor-blocks.js';

        wp_register_script(
            'swi-foot-editor-blocks',
            $editor_js_url,
            array('wp-blocks', 'wp-element', 'wp-block-editor', 'wp-components', 'wp-i18n', 'wp-data', 'wp-rich-text'),
            SWI_FOOT_PLUGIN_VERSION
        );

        $editor_css = SWI_FOOT_PLUGIN_URL . 'assets/blocks.css';
        wp_register_style('swi-foot-editor-styles', $editor_css, array(), SWI_FOOT_PLUGIN_VERSION);

        if ( file_exists( $base . '/standings/block.json' ) ) {
            register_block_type_from_metadata( $base . '/standings', array(
                'render_callback' => array( $this, 'render_standings_block' ),
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }

        if ( file_exists( $base . '/context/block.json' ) ) {
            register_block_type_from_metadata( $base . '/context', array(
                'render_callback' => function($attributes, $content, $block) {
                    // Provide a transparent wrapper but push provider context to a global stack
                    // so inner shortcodes and blocks can read it during rendering.
                    $provided = is_array($attributes['swi_foot_context'] ?? null) ? $attributes['swi_foot_context'] : array();
                    $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
                    $ctx = array_merge($post_defaults, $provided);

                    global $swi_foot_context_stack;
                    if (!isset($swi_foot_context_stack) || !is_array($swi_foot_context_stack)) {
                        $swi_foot_context_stack = array();
                    }
                    $swi_foot_context_stack[] = $ctx;

                    // Render inner blocks (so shortcodes executed within this scope can read the global)
                    $rendered = do_blocks($content);

                    // Pop stack
                    array_pop($swi_foot_context_stack);

                    return $rendered;
                },
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }

        if ( file_exists( $base . '/schedule/block.json' ) ) {
            register_block_type_from_metadata( $base . '/schedule', array(
                'render_callback' => array( $this, 'render_schedule_block' ),
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }

        /**
         * Deprecated shortcode-inserter block 
         * Kept for backwards compatibility only
         */
        if ( file_exists( $base . '/shortcode-inserter/block.json' ) ) {
            register_block_type_from_metadata( $base . '/shortcode-inserter', array(
                'render_callback' => array( $this, 'render_shortcode_inserter_block' ),
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles',
                'deprecated' => true,
            ) );
        }

        // Register additional blocks (editor-only save shortcodes)
        if ( file_exists( $base . '/team-data/block.json' ) ) {
            register_block_type_from_metadata( $base . '/team-data', array(
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }

        if ( file_exists( $base . '/match-roster/block.json' ) ) {
            register_block_type_from_metadata( $base . '/match-roster', array(
                'render_callback' => array( $this, 'render_match_roster_block' ),
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }

        if ( file_exists( $base . '/match-events/block.json' ) ) {
            register_block_type_from_metadata( $base . '/match-events', array(
                'render_callback' => array( $this, 'render_match_events_block' ),
                'editor_script' => 'swi-foot-editor-blocks',
                'editor_style'  => 'swi-foot-editor-styles'
            ) );
        }
    }

    public function enqueue_scripts()
    {
        wp_enqueue_script('swi-foot-blocks', SWI_FOOT_PLUGIN_URL . 'assets/blocks.js', array('jquery'), SWI_FOOT_PLUGIN_VERSION, true);
        wp_enqueue_style('swi-foot-blocks', SWI_FOOT_PLUGIN_URL . 'assets/blocks.css', array(), SWI_FOOT_PLUGIN_VERSION);
        
        // Localize REST API data for frontend event refresh polling
        wp_localize_script('swi-foot-blocks', 'swiFootRest', array(
            'rest_url' => rest_url('swi-foot/v1/'),
            'rest_nonce' => wp_create_nonce('wp_rest')
        ));
    }

    /*
    public function enqueue_editor_assets()
    {
        wp_enqueue_script(
            'swi-foot-editor-blocks',
            SWI_FOOT_PLUGIN_URL . 'assets/editor-blocks.js',
            array('wp-blocks', 'wp-element', 'wp-editor', 'wp-components', 'wp-i18n'),
            SWI_FOOT_PLUGIN_VERSION
        );

        wp_localize_script('swi-foot-editor-blocks', 'swiFootData', array(
            'teams' => $this->get_teams_for_editor(),
            'shortcodes' => array(
                'match' => __('Full Match Display', 'swi_foot_matchdata'),
                'match_home_team' => __('Home Team', 'swi_foot_matchdata'),
                'match_away_team' => __('Away Team', 'swi_foot_matchdata'),
                'match_date' => __('Match Date', 'swi_foot_matchdata'),
                'match_time' => __('Match Time', 'swi_foot_matchdata'),
                'match_venue' => __('Venue', 'swi_foot_matchdata'),
                'match_score' => __('Score', 'swi_foot_matchdata'),
                'match_status' => __('Status', 'swi_foot_matchdata'),
                'match_league' => __('League', 'swi_foot_matchdata'),
                'match_round' => __('Round', 'swi_foot_matchdata')
            )
        ));
    }
    */

    public function enqueue_editor_assets()
    {
        // Enqueue the registered script handle (register_blocks() registers it on init)
        if ( ! wp_script_is( 'swi-foot-editor-blocks', 'enqueued' ) ) {
            wp_enqueue_script( 'swi-foot-editor-blocks' );
        }

        // Enqueue editor styles globally to ensure block wrapper styling applies
        wp_enqueue_style( 'swi-foot-editor-styles' );

        wp_localize_script('swi-foot-editor-blocks', 'swiFootEditorData', array(
            'rest_url' => esc_url_raw(rest_url('swi-foot/v1')),
            'rest_nonce' => wp_create_nonce('wp_rest'),
        ));
    }


    private function get_teams_for_editor()
    {
        $api = new Swi_Foot_API();
        $teams = $api->get_teams();

        if (is_wp_error($teams) || empty($teams)) {
            return array();
        }

        $team_options = array();
        foreach ($teams as $team) {
            $team_name  = $team['teamName'] ?? '';
            $league     = $team['teamLeagueName'] ?? '';

            // If league name is available, append in parentheses
            if (!empty($league)) {
                $team_name .= ' (' . $league . ')';
            }

            $team_options[] = array(
                'value' => $team['teamId'] ?? '',
                'label' => $team_name
            );
        }

        return $team_options;
    }

    public function render_standings_block($attributes, $content = '', $block = null)
    {
        // Resolve context: block context (from provider) overrides post meta defaults
        $provided = is_object($block) && !empty($block->context['swi-foot/context']) ? $block->context['swi-foot/context'] : null;
        $ctx = array();
        if (is_array($provided)) $ctx = $provided;
        // Merge with post-level defaults (post meta -> plugin options)
        $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
        $ctx = array_merge($post_defaults, $ctx);

        // Team must come from context only
        $team_id = $ctx['team_id'] ?? null;

        if (empty($team_id)) {
            return '<div class="swi-foot-error">' . __('Standings: No team provided in container context.', 'swi_foot_matchdata') . '</div>';
        }

        $api = new Swi_Foot_API();
        $standings = $api->get_standings($team_id);

        if (is_wp_error($standings)) {
            return '<div class="swi-foot-error">' .
                sprintf(__('Error loading standings: %s', 'swi_foot_matchdata'), $standings->get_error_message()) .
                '</div>';
        }

        if (empty($standings)) {
            return '<div class="swi-foot-notice">' . __('No standings data available.', 'swi_foot_matchdata') . '</div>';
        }

        ob_start();
?>
        <div class="swi-foot-standings">
            <h3><?php _e('Current Standings', 'swi_foot_matchdata'); ?></h3>
            <table class="swi-foot-table">
                <thead>
                    <tr>
                        <th><?php _e('Pos', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('Team', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('P', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('W', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('D', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('L', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('GF', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('GA', 'swi_foot_matchdata'); ?></th>
                        <th><?php _e('Pts', 'swi_foot_matchdata'); ?></th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($standings as $team): ?>
                        <tr<?php echo ($team['teamId'] == $team_id) ? ' class="highlight"' : ''; ?>>
                            <td><?php echo esc_html($team['position']); ?></td>
                            <td><?php echo esc_html($team['teamName']); ?></td>
                            <td><?php echo esc_html($team['matches']); ?></td>
                            <td><?php echo esc_html($team['wins']); ?></td>
                            <td><?php echo esc_html($team['draws']); ?></td>
                            <td><?php echo esc_html($team['losses']); ?></td>
                            <td><?php echo esc_html($team['goalsFor']); ?></td>
                            <td><?php echo esc_html($team['goalsAgainst']); ?></td>
                            <td><strong><?php echo esc_html($team['points']); ?></strong></td>
                            </tr>
                        <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    <?php
        return ob_get_clean();
    }

    public function render_schedule_block($attributes, $content = '', $block = null)
    {
        $provided = is_object($block) && !empty($block->context['swi-foot/context']) ? $block->context['swi-foot/context'] : null;
        $ctx = array();
        if (is_array($provided)) $ctx = $provided;
        $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
        $ctx = array_merge($post_defaults, $ctx);

        // Team must come from context only
        $team_id = $ctx['team_id'] ?? null;
        $limit = isset($attributes['limit']) ? $attributes['limit'] : 5;

        if (empty($team_id)) {
            return '<div class="swi-foot-error">' . __('Schedule: No team provided in container context.', 'swi_foot_matchdata') . '</div>';
        }

        $api = new Swi_Foot_API();
        $events = $api->get_schedule($team_id);

        if (is_wp_error($events)) {
            return '<div class="swi-foot-error">' .
                sprintf(__('Error loading schedule: %s', 'swi_foot_matchdata'), $events->get_error_message()) .
                '</div>';
        }

        // Filter upcoming events and limit results
        $upcoming_events = array();
        if (is_array($events)) {
            foreach ($events as $event) {
                if (strtotime($event['matchDate']) >= time()) {
                    $upcoming_events[] = $event;
                    if (count($upcoming_events) >= $limit) {
                        break;
                    }
                }
            }
        }

        ob_start();
    ?>
        <div class="swi-foot-schedule">
            <h3><?php _e('Upcoming Matches', 'swi_foot_matchdata'); ?></h3>
            <?php if (empty($upcoming_events)): ?>
                <p><?php _e('No upcoming matches scheduled.', 'swi_foot_matchdata'); ?></p>
            <?php else: ?>
                <div class="swi-foot-events">
                    <?php foreach ($upcoming_events as $event): ?>
                        <div class="swi-foot-event">
                            <div class="event-date">
                                <?php echo date_i18n(get_option('date_format') . ' ' . get_option('time_format'), strtotime($event['matchDate'])); ?>
                            </div>
                            <div class="event-teams">
                                <?php echo esc_html($event['teamNameA'] ?? ''); ?> vs <?php echo esc_html($event['teamNameB'] ?? ''); ?>
                            </div>
                            <?php if (!empty($event['stadiumPlaygroundName'])): ?>
                                <div class="event-location"><?php echo esc_html($event['stadiumPlaygroundName']); ?></div>
                            <?php endif; ?>
                            <?php if (!empty($event['leagueName'])): ?>
                                <div class="event-league"><?php echo esc_html($event['leagueName']); ?></div>
                            <?php endif; ?>
                        </div>
                    <?php endforeach; ?>
                </div>
            <?php endif; ?>
        </div>
    <?php
        return ob_get_clean();
    }

    public function render_shortcode_inserter_block($attributes, $content = '', $block = null)
    {
        $provided = is_object($block) && !empty($block->context['swi-foot/context']) ? $block->context['swi-foot/context'] : null;
        $ctx = array();
        if (is_array($provided)) $ctx = $provided;
        $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
        $ctx = array_merge($post_defaults, $ctx);

        $shortcode_type = $attributes['shortcodeType'] ?? 'match';
        $match_id = $attributes['matchId'] ?? ($ctx['match_id'] ?? '');
        $team_id = $attributes['teamId'] ?? ($ctx['team_id'] ?? '');
        $show_next = !empty($attributes['showNext']);
        $format = $attributes['format'] ?? '';
        $separator = $attributes['separator'] ?? ':';

        // Build shortcode based on attributes
        $shortcode_parts = array();

        if (!empty($match_id)) {
            $shortcode_parts[] = 'match_id="' . esc_attr($match_id) . '"';
        }

        if (!empty($team_id)) {
            $shortcode_parts[] = 'team_id="' . esc_attr($team_id) . '"';
        }

        if ($show_next) {
            $shortcode_parts[] = 'show_next="true"';
        }

        if (!empty($format) && in_array($shortcode_type, array('match_date', 'match_time'))) {
            $shortcode_parts[] = 'format="' . esc_attr($format) . '"';
        }

        if (!empty($separator) && $separator !== ':' && $shortcode_type === 'match_score') {
            $shortcode_parts[] = 'separator="' . esc_attr($separator) . '"';
        }

        $shortcode = '[swi_foot_' . $shortcode_type . (!empty($shortcode_parts) ? ' ' . implode(' ', $shortcode_parts) : '') . ']';

        // Execute the shortcode and return inline wrapper so editors can insert it inside text
        $rendered = do_shortcode($shortcode);
        return '<span class="swi-foot-inline shortcode-inserter">' . $rendered . '</span>';
    }

    /**
     * Render match roster block
     * Gets match from container context, uses side attribute to determine which team to show
     */
    public function render_match_roster_block($attributes, $content = '', $block = null)
    {
        // Get context from parent block container
        $provided = is_object($block) && !empty($block->context['swi-foot/context']) ? $block->context['swi-foot/context'] : null;
        $ctx = array();
        if (is_array($provided)) $ctx = $provided;
        $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
        $ctx = array_merge($post_defaults, $ctx);

        // Match must come from context
        $match_id = $ctx['match_id'] ?? '';
        $side = $attributes['side'] ?? 'home';
        $with_bench = $attributes['withBench'] ? 'true' : 'false';

        if (empty($match_id)) {
            return '<div class="swi-foot-error">' . __('Match Roster: No match provided in container context.', 'swi_foot_matchdata') . '</div>';
        }

        // Build shortcode using match from context and side attribute
        $shortcode = '[swi_foot_roster match_id="' . esc_attr($match_id) . '" side="' . esc_attr($side) . '"';
        if ($with_bench === 'true') {
            $shortcode .= ' with_bench="true"';
        }
        $shortcode .= ']';

        // Process and return the shortcode
        return do_shortcode($shortcode);
    }

    /**
     * Render match events block
     * Gets match from container context, displays live events for that match
     */
    public function render_match_events_block($attributes, $content = '', $block = null)
    {
        // Get context from parent block container
        $provided = is_object($block) && !empty($block->context['swi-foot/context']) ? $block->context['swi-foot/context'] : null;
        $ctx = array();
        if (is_array($provided)) $ctx = $provided;
        $post_defaults = function_exists('swi_foot_resolve_context') ? swi_foot_resolve_context(get_the_ID()) : array();
        $ctx = array_merge($post_defaults, $ctx);

        // Match must come from context
        $match_id = $ctx['match_id'] ?? '';
        $refresh_interval = $attributes['refreshInterval'] ?? 30;
        $event_order = $attributes['eventOrder'] ?? 'dynamic';

        if (empty($match_id)) {
            return '<div class="swi-foot-error">' . __('Match Events: No match provided in container context.', 'swi_foot_matchdata') . '</div>';
        }

        // Build shortcode using match from context
        $shortcode = '[swi_foot_events match_id="' . esc_attr($match_id) . '" refresh_interval="' . esc_attr($refresh_interval) . '" event_order="' . esc_attr($event_order) . '"]';

        // Process and return the shortcode
        return do_shortcode($shortcode);
    }

    private function render_team_selector($block_type)
    {
        $api = new Swi_Foot_API();
        $teams = $api->get_teams();

        if (is_wp_error($teams) || empty($teams)) {
            return '<div class="swi-foot-error">' .
                __('Please configure your API settings and ensure teams are available.', 'swi_foot_matchdata') .
                '</div>';
        }

        ob_start();
    ?>
        <div class="swi-foot-team-selector">
            <p><?php printf(__('Please select a team to display %s:', 'swi_foot_matchdata'), $block_type); ?></p>
            <select onchange="swiFootSelectTeam(this.value, '<?php echo esc_attr($block_type); ?>')">
                <option value=""><?php _e('Select a team...', 'swi_foot_matchdata'); ?></option>
                <?php foreach ($teams as $team): ?>
                    <option value="<?php echo esc_attr($team['teamId'] ?? ''); ?>">
                        <?php echo esc_html($team['teamName'] ?? 'Unknown Team'); ?>
                    </option>
                <?php endforeach; ?>
            </select>
        </div>
<?php
        return ob_get_clean();
    }


}
?>