<?php

declare(strict_types=1);

if (!defined('ABSPATH')) {
    exit;
}

/**
 * Agentic Bridge v2 presentation layer — self-contained shell, assets, and workspaces.
 *
 * Legacy admin markup/CSS/JS must not load when v2 is enabled. Enabled by default on install;
 * override via THEDOTDEV_AGENTIC_BRIDGE_V2_UI or thedotdev_agentic_bridge_v2_presentation filter.
 */
final class TheDotDevAgenticBridge_V2_Presentation
{
    public const STYLE_HANDLE = 'thedotdev-agentic-bridge-v2-shell';

    public const SCRIPT_HANDLE = 'thedotdev-agentic-bridge-v2-shell';

    public const EDITOR_STYLE_HANDLE = 'thedotdev-agentic-bridge-v2-editor';

    public const EDITOR_SCRIPT_HANDLE = 'thedotdev-agentic-bridge-v2-editor';

    /** @var list<string> */
    public const LEGACY_STYLE_HANDLES = [
        'thedotdev-agentic-bridge-admin',
        'thedotdev-agentic-bridge-overview-v2',
        'thedotdev-agentic-bridge-admin-editor',
    ];

    /** @var list<string> */
    public const LEGACY_SCRIPT_HANDLES = [
        'thedotdev-agentic-bridge-admin',
        'thedotdev-agentic-bridge-admin-editor',
    ];

    /** @var list<string> */
    public const LEGACY_MARKUP_CLASSES = [
        'tdab-admin',
        'tdab-app',
        'tdab-s1-header',
        'tdab-s2-hero',
        'tdab-card',
        'tdab-shell-nav',
        'tdab-b2-connection',
        'tdab-b3-metadata',
        'tdab-readiness',
    ];

    public static function register(): void
    {
        add_filter('thedotdev_agentic_bridge_v2_presentation', [self::class, 'filter_default_enabled']);
    }

    /** @param mixed $enabled */
    public static function filter_default_enabled($enabled): bool
    {
        if (is_bool($enabled)) {
            return $enabled;
        }

        return true;
    }

    public static function is_enabled(): bool
    {
        if (defined('THEDOTDEV_AGENTIC_BRIDGE_V2_UI')) {
            return (bool) THEDOTDEV_AGENTIC_BRIDGE_V2_UI;
        }

        return (bool) apply_filters('thedotdev_agentic_bridge_v2_presentation', true);
    }

    public static function enqueue_admin_assets(string $hook): void
    {
        if (!self::is_enabled() || !TheDotDevAgenticBridge_Admin::should_enqueue_admin_app_assets($hook)) {
            return;
        }

        wp_enqueue_style(
            'thedotdev-agentic-bridge-v2-fonts',
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/admin-fonts.css',
            [],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION
        );
        wp_enqueue_style(
            self::STYLE_HANDLE,
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/v2/shell.css',
            ['thedotdev-agentic-bridge-v2-fonts'],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION
        );
        wp_enqueue_script(
            self::SCRIPT_HANDLE,
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/v2/shell.js',
            [],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION,
            true
        );
        wp_add_inline_script(self::SCRIPT_HANDLE, 'window.tdabV2MetadataEditor=' . wp_json_encode([
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('thedotdev_agentic_bridge_metadata_editor'),
        ]) . ';', 'before');
    }

    public static function enqueue_editor_assets(): void
    {
        if (!self::is_enabled()) {
            return;
        }

        wp_enqueue_style(
            'thedotdev-agentic-bridge-v2-fonts',
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/admin-fonts.css',
            [],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION
        );
        wp_enqueue_style(
            self::EDITOR_STYLE_HANDLE,
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/v2/editor.css',
            ['thedotdev-agentic-bridge-v2-fonts'],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION
        );
        wp_enqueue_script(
            self::EDITOR_SCRIPT_HANDLE,
            THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_URL . 'assets/v2/editor.js',
            ['wp-components', 'wp-compose', 'wp-data', 'wp-edit-post', 'wp-element', 'wp-i18n', 'wp-plugins'],
            THEDOTDEV_AGENTIC_BRIDGE_VERSION,
            true
        );
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function render_admin_app(array $context): void
    {
        foreach ($context as $key => $value) {
            if (is_string($key) && $key !== '' && !str_starts_with($key, "\0")) {
                ${$key} = $value;
            }
        }

        $thedotdev_agentic_bridge_v2_workspace = self::resolve_workspace($context);
        $thedotdev_agentic_bridge_v2_assets_section = self::resolve_assets_section($context);

        include THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_DIR . 'views/v2/app.php';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function render_ai_preview(array $context): void
    {
        foreach ($context as $key => $value) {
            if (is_string($key) && $key !== '' && !str_starts_with($key, "\0")) {
                ${$key} = $value;
            }
        }

        $thedotdev_agentic_bridge_v2_workspace = 'ai-preview';
        $thedotdev_agentic_bridge_v2_assets_section = 'artifacts';

        include THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_DIR . 'views/v2/app.php';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function render_setup(array $context): void
    {
        foreach ($context as $key => $value) {
            if (is_string($key) && $key !== '' && !str_starts_with($key, "\0")) {
                ${$key} = $value;
            }
        }

        $thedotdev_agentic_bridge_v2_workspace = 'setup';
        $thedotdev_agentic_bridge_v2_assets_section = 'artifacts';

        include THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_DIR . 'views/v2/app.php';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function render_plans(array $context): void
    {
        foreach ($context as $key => $value) {
            if (is_string($key) && $key !== '' && !str_starts_with($key, "\0")) {
                ${$key} = $value;
            }
        }

        $thedotdev_agentic_bridge_v2_workspace = 'plans';
        $thedotdev_agentic_bridge_v2_assets_section = 'artifacts';
        if (!isset($thedotdev_agentic_bridge_is_s2)) {
            $thedotdev_agentic_bridge_is_s2 = is_array(TheDotDevAgenticBridge_Readiness_Store::latest());
        }

        include THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_DIR . 'views/v2/app.php';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function render_review(array $context): void
    {
        foreach ($context as $key => $value) {
            if (is_string($key) && $key !== '' && !str_starts_with($key, "\0")) {
                ${$key} = $value;
            }
        }

        $thedotdev_agentic_bridge_v2_workspace = 'review';
        $thedotdev_agentic_bridge_v2_assets_section = 'artifacts';
        if (!isset($thedotdev_agentic_bridge_is_s2)) {
            $thedotdev_agentic_bridge_is_s2 = is_array(TheDotDevAgenticBridge_Readiness_Store::latest());
        }

        include THEDOTDEV_AGENTIC_BRIDGE_PLUGIN_DIR . 'views/v2/app.php';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function resolve_workspace(array $context): string
    {
        if (($context['thedotdev_agentic_bridge_view'] ?? '') === 'history') {
            return 'history';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_settings'])) {
            return 'settings';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_s3'])
            || (($context['thedotdev_agentic_bridge_view'] ?? '') === 'findings')) {
            return 'findings';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_s4'])) {
            return 'content';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_s5'])
            || !empty($context['thedotdev_agentic_bridge_is_s6'])
            || !empty($context['thedotdev_agentic_bridge_is_s7'])) {
            return 'assets-safety';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_s8'])) {
            return 'settings';
        }

        return 'dashboard';
    }

    /**
     * @param array<string, mixed> $context
     */
    public static function resolve_assets_section(array $context): string
    {
        if (!empty($context['thedotdev_agentic_bridge_is_s6'])) {
            return 'privacy';
        }
        if (!empty($context['thedotdev_agentic_bridge_is_s7'])) {
            return 'safety';
        }

        return 'artifacts';
    }

    public static function connection_status_label(bool $connected): string
    {
        return $connected
            ? __('Optional service connected', 'agentic-bridge')
            : __('Local setup / Optional service', 'agentic-bridge');
    }

    /** @return list<array{key: string, label: string, href: string, primary?: bool}> */
    public static function nav_items(bool $has_scan): array
    {
        $admin = TheDotDevAgenticBridge_Admin::admin_page_url();
        $setup_complete = TheDotDevAgenticBridge_Onboarding_Wizard::is_setup_confirmed();
        $setup_item = [
            'key' => 'setup',
            'label' => $setup_complete
                ? __('Setup guide', 'agentic-bridge')
                : __('Quick Start', 'agentic-bridge'),
            'href' => TheDotDevAgenticBridge_Admin::setup_url(),
            'primary' => !$setup_complete,
        ];
        $items = [
            ['key' => 'dashboard', 'label' => __('Dashboard', 'agentic-bridge'), 'href' => $admin, 'primary' => $setup_complete],
            ['key' => 'findings', 'label' => __('Site checks', 'agentic-bridge'), 'href' => add_query_arg(['thedotdev_agentic_bridge_view' => 'findings'], $admin)],
            ['key' => 'history', 'label' => __('Progress', 'agentic-bridge'), 'href' => add_query_arg(['thedotdev_agentic_bridge_view' => 'history'], $admin)],
            ['key' => 'ai-preview', 'label' => __('How AI may read your site', 'agentic-bridge'), 'href' => TheDotDevAgenticBridge_Admin::ai_preview_url()],
            ['key' => 'content', 'label' => __('Pages & answers', 'agentic-bridge'), 'href' => add_query_arg(['thedotdev_agentic_bridge_view' => 'content'], $admin)],
            ['key' => 'review', 'label' => __('Review changes', 'agentic-bridge'), 'href' => TheDotDevAgenticBridge_Admin::review_changes_url()],
            ['key' => 'assets-safety', 'label' => __('AI files & controls', 'agentic-bridge'), 'href' => add_query_arg(['thedotdev_agentic_bridge_view' => 'artifacts'], $admin)],
            ['key' => 'plans', 'label' => __('Plans & AI usage', 'agentic-bridge'), 'href' => TheDotDevAgenticBridge_Admin::plans_url()],
            ['key' => 'settings', 'label' => __('Settings', 'agentic-bridge'), 'href' => add_query_arg(['thedotdev_agentic_bridge_view' => 'settings'], $admin)],
        ];

        if (!$has_scan) {
            $items = array_values(array_filter(
                $items,
                static fn (array $item): bool => !in_array($item['key'], ['findings'], true)
            ));
        }

        // Incomplete setup: Quick Start is first/default. Complete: Dashboard primary, Setup guide remains reachable.
        if (!$setup_complete) {
            array_unshift($items, $setup_item);
        } else {
            $items[] = $setup_item;
        }

        return $items;
    }
}