<?php

/**
 * Admin styles and scripts (bundled/minified by default; raw sources when AFROMEWO_USE_RAW_ASSETS is true).
 *
 * @package AfroIT_Messaging_WorkflowAutomations
 */

namespace AfroIT\Messaging\WorkflowAutomations\Admin;

if (! defined('ABSPATH')) {
    exit;
}

class AdminScripts
{

    public const HANDLE_ADMIN_CSS     = 'afromewo-admin-css';
    public const HANDLE_ADMIN_JS      = 'afromewo-admin-js';
    public const HANDLE_MESSAGE_TEMPLATE_JS = 'afromewo-message-template-js';
    public const HANDLE_WORKFLOW_ACTIONS_JS = 'afromewo-workflow-actions-js';
    public const HANDLE_MARKDOWN_PARSER_JS = 'afromewo-markdown-parser-js';
    public const HANDLE_EXECUTIONS_JS = 'afromewo-executions-js';
    public const HANDLE_WORKFLOW_JS = 'afromewo-workflow-js';
    public const HANDLE_SORTABLE      = 'sortablejs';

    protected $dev_assets = [
        'css' => [
            'afromewo-settings-css' => 'assets/css/admin/settings.css',
            'afromewo-messaging-templates-css' => 'assets/css/admin/message-template.css',
            'afromewo-workflow-css' => 'assets/css/admin/workflow.css',
        ],
        'js' => [
            self::HANDLE_SORTABLE => 'assets/js/vendor/sortablejs-1.15.2.min.js',
            self::HANDLE_MARKDOWN_PARSER_JS => 'assets/js/admin/markdown-parser.js',
            self::HANDLE_MESSAGE_TEMPLATE_JS => 'assets/js/admin/message-template.js',
            self::HANDLE_WORKFLOW_ACTIONS_JS => 'assets/js/admin/workflow-actions.js',
            self::HANDLE_WORKFLOW_JS => 'assets/js/admin/workflow.js',
            self::HANDLE_EXECUTIONS_JS => 'assets/js/admin/executions.js',
        ],
    ];

    protected $prod_assets = [
        'css' => [
            'afromewo-admin-css' => 'assets/build/admin.bundle.min.css',
        ],
        'js' => [
            self::HANDLE_SORTABLE => 'assets/build/sortablejs-1.15.2.min.js',
            self::HANDLE_ADMIN_JS => 'assets/build/admin.bundle.min.js',
        ]
    ];

    protected $dependencies = [
        self::HANDLE_MESSAGE_TEMPLATE_JS => ['jquery'],
        self::HANDLE_WORKFLOW_ACTIONS_JS => ['jquery'],
        self::HANDLE_WORKFLOW_JS => ['jquery', self::HANDLE_SORTABLE, self::HANDLE_WORKFLOW_ACTIONS_JS],
        self::HANDLE_EXECUTIONS_JS => ['jquery', 'thickbox'],
        self::HANDLE_ADMIN_JS => ['jquery', self::HANDLE_SORTABLE],
    ];

    public static function use_raw_assets(): bool
    {
        return defined('AFROMEWO_DEV_MODE') && constant('AFROMEWO_DEV_MODE');
    }

    /**
     * Script handle that receives workflow builder localization.
     *
     * Production uses the combined admin bundle; development uses the raw workflow file.
     *
     * @return string
     */
    public static function get_workflow_script_handle(): string
    {
        return self::use_raw_assets() ? self::HANDLE_WORKFLOW_JS : self::HANDLE_ADMIN_JS;
    }

    /**
     * When true (set in wp-config.php), unminified source files are enqueued instead of bundled assets.
     *
     * @return array $assets
     */
    protected function get_assets(): array
    {
        return self::use_raw_assets() ? $this->dev_assets : $this->prod_assets;
    }

    /**
     * Register script and style enqueue actions.
     *
     * @return void
     */
    public function register(): void
    {
        add_action('admin_enqueue_scripts', array($this, 'enqueue_for_screen'), 10);
    }

    /**
     * @param string $hook_suffix Admin screen hook.
     * @return void
     */
    public function enqueue_for_screen(string $hook_suffix): void
    {
        if (! $this->is_workflow_automations_admin_screen($hook_suffix)) {
            return;
        }

        $this->enqueue_admin_css();

        $tab     = sanitize_key( Request::get( 'tab', 'automations' ) );
        $section = sanitize_key( Request::get( 'section', '' ) );
        $enqueue_js = ( 'create_automation' === $tab || 'new_template' === $tab || ( 'automations' === $tab && 'executed' === $section ) );

        /**
         * Whether to enqueue the admin JS bundle on this hub screen.
         *
         * @param bool   $enqueue_js  Whether JS should load.
         * @param string $hook_suffix Admin hook suffix.
         * @param string $tab         Current hub tab.
         * @param string $section     Current hub section.
         */
        if ( apply_filters( 'afromewo_enqueue_admin_js', $enqueue_js, $hook_suffix, $tab, $section ) ) {
            $this->enqueue_admin_js();
        }

        /**
         * Fires after this plugin has enqueued its admin assets for a hub screen.
         *
         * Add-ons should enqueue here (or on a later priority of admin_enqueue_scripts)
         * and depend on {@see AdminScripts::get_workflow_script_handle()} for builder JS.
         *
         * @param string $hook_suffix Admin hook suffix.
         * @param string $tab         Current hub tab.
         * @param string $section     Current hub section.
         */
        do_action( 'afromewo_admin_enqueue_scripts', $hook_suffix, $tab, $section );
    }

    /**
     * Whether the current admin screen belongs to this plugin (WooCommerce submenu hub).
     *
     * @param string $hook_suffix Admin hook suffix, e.g. woocommerce_page_afroit-messaging-workflows.
     * @return bool
     */
    public function is_workflow_automations_admin_screen(string $hook_suffix): bool
    {
		return strpos( $hook_suffix, \AFROMEWO_PLUGIN_SLUG ) !== false;
    }

    /**
     * Enqueue admin CSS (one minified bundle by default, or source files in order).
     *
     * @return void
     */
    public function enqueue_admin_css(): void
    {
        $assets = $this->get_assets();
        foreach ($assets['css'] as $handle => $path) {
            wp_enqueue_style(
                $handle,
                AFROMEWO_PLUGIN_URL . $path,
                isset($this->dependencies[$handle]) ? $this->dependencies[$handle] : array(),
                $this->asset_version($path)
            );
        }
    }

    /**
     * Enqueue admin JS for workflow builder or message-template screens.
     * @return void
     */
    public function enqueue_admin_js(): void
    {
        $assets = $this->get_assets();
        foreach ($assets['js'] as $handle => $path) {
            $deps = isset($this->dependencies[$handle]) ? $this->dependencies[$handle] : array();
            wp_enqueue_script(
                $handle,
                AFROMEWO_PLUGIN_URL . $path,
                $deps,
                $this->asset_version($path),
                true
            );
        }
    }

    /**
     * @param string $relative_path Path relative to plugin root.
     * @return string
     */
    private function asset_version(string $relative_path): string
    {
        $path = AFROMEWO_PLUGIN_DIR . $relative_path;
        if (is_readable($path)) {
            return (string) filemtime($path);
        }
        return AFROMEWO_VERSION;
    }
}