<?php

/**
 * Create Workflow page - visual workflow builder.
 *
 * @package AfroIT_Messaging_WorkflowAutomations
 */

namespace AfroIT\Messaging\WorkflowAutomations\Admin\Automation;


use AfroIT\Messaging\WorkflowAutomations\Admin\AdminPage;
use AfroIT\Messaging\WorkflowAutomations\Admin\Hub\HubPage;
use AfroIT\Messaging\WorkflowAutomations\Admin\AdminScripts;
use AfroIT\Messaging\WorkflowAutomations\Admin\Request;
use AfroIT\Messaging\WorkflowAutomations\Meta\MetaMessaging;
use AfroIT\Messaging\WorkflowAutomations\Security\SecureOptions;
use AfroIT\Messaging\WorkflowAutomations\Workflows\Conditions\Conditions;
use AfroIT\Messaging\WorkflowAutomations\Workflows\Actions\Actions;
use AfroIT\Messaging\WorkflowAutomations\Workflows\Actions\SendEmailAction;
use AfroIT\Messaging\WorkflowAutomations\Workflows\WorkflowStoreFactory;
use AfroIT\Messaging\WorkflowAutomations\Workflows\Workflow;
use AfroIT\Messaging\WorkflowAutomations\Workflows\WorkflowTriggers;
use AfroIT\Messaging\WorkflowAutomations\Twilio\TwilioClient;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class CreateAutomationPage extends AdminPage {

	/**
	 * Page title.
	 *
	 * @return string
	 */
	public function title() {
		return __( 'Create Automation', 'afroit-messaging-workflows' );
	}

	/**
	 * Override render to load vars and enqueue scripts.
	 */
	public function render() {
		$this->loadVars();
		$this->enqueueScripts();
		parent::render();
	}

	/**
	 * Load template variables.
	 */
	protected function loadVars(): void {
		$this->vars['workflow_id']   = Request::get( 'workflow_id', 0 );
		$this->vars['workflow']      = null;
		if ( $this->vars['workflow_id'] > 0 ) {
			$workflow = WorkflowStoreFactory::create()->find( (int) $this->vars['workflow_id'] );
            if ( empty( $workflow ) ) {
				wp_safe_redirect( HubPage::url( array( 'tab' => 'create_automation', 'afromewo_notice' => 'automation_not_found' ) ) );
                exit;
            }
			$this->vars['workflow']  = $workflow;
		}
		//$this->vars['templates']     = $this->getApprovedTemplates();
		$this->vars['actions']       = Actions::getActions();
		$this->vars['triggers']      = $this->getTriggers();
		$this->vars['variables']     = Conditions::getVariables();
		$this->vars['operators']     = Conditions::getOperators();

        $this->vars['whatsappTemplates'] = $this->getApprovedTemplates();
		$this->vars['whatsappTemplatesUrl'] = HubPage::url( array( 'tab' => 'templates' ) );

        $this->vars['emailTemplates'] = SendEmailAction::getEmailTemplatesForDropdown();
        $this->vars['emailSettingsUrl'] = admin_url( 'admin.php?page=wc-settings&tab=email' );

		$this->vars['twilioSettingsUrl'] = HubPage::url( array( 'tab' => 'settings', 'section' => 'twilio' ) );
        $this->vars['twilioIsConfigured'] = ( new TwilioClient() )->is_configured();

		$this->vars['metaSettingsUrl'] = HubPage::url( array( 'tab' => 'settings', 'section' => 'facebook_app' ) );
        $this->vars['metaIsConfigured'] = SecureOptions::get_instance()->get_selected_business() !== null;
	}

	/**
	 * Get available workflow triggers.
	 *
	 * @return array<string, string>
	 */
	private function getTriggers(): array {
        $labels = ['' => ''];
        $triggers = WorkflowTriggers::getTriggers();
        foreach ( $triggers as $trigger => $data ) {
            $labels[$trigger] = $data['label'] ?? $trigger;
        }
        asort( $labels );
        return $labels;
	}

	/**
	 * Get WhatsApp message templates for the template selector.
	 *
	 * @return array<array{id:string,name:string,language:string}>
	 */
	private function getApprovedTemplates(): array {
		$secure   = new SecureOptions();
		$business = $secure->get_selected_business();
		if ( empty( $business['waba_id'] ) ) {
			return array();
		}
		$response = ( new MetaMessaging() )->getMessageTemplates( $business['waba_id'], array() );
		if ( false === $response || empty( $response['data'] ) ) {
			return array();
		}
		$out = array();
		foreach ( $response['data'] as $t ) {
            if ( $t['status'] !== 'APPROVED' ) {
                continue;
            }
            $language = isset( $t['language'] ) ? $t['language'] : '';
			$name     = isset( $t['name'] ) ? $t['name'] : '';
			$id       = isset( $t['id'] ) ? $t['id'] : '';
			if ( $name && $id && $language ) {
				$out[] = array( 'id' => $id, 'name' => $name, 'language' => $language );
			}
		}
		return $out;
	}

	/**
	 * Localize workflow builder script (enqueued earlier on admin_enqueue_scripts by AdminScripts).
	 */
	public function enqueueScripts(): void {
		$workflow_data = null;
		if ( ! empty( $this->vars['workflow'] ) ) {
			/** @var Workflow $w */
			$w = $this->vars['workflow'];
			$workflow_data = array(
				'id'         => $w->getId(),
				'name'       => $w->getName(),
				'trigger'    => $w->getTrigger(),
				'active'     => $w->isActive(),
				'conditions' => $w->getConditions(),
				'steps'      => $w->getSteps(),
			);
		}

		wp_localize_script(
			AdminScripts::get_workflow_script_handle(),
			'AfroitMessagingWorkflowAutomations',
			$this->getBuilderScriptData( $workflow_data )
		);
	}

	/**
	 * Data passed to the workflow builder script.
	 *
	 * @param array<string, mixed>|null $workflow_data Workflow payload or null when creating.
	 * @return array<string, mixed>
	 */
	protected function getBuilderScriptData( ?array $workflow_data ): array {
		$data = array(
			'ajaxUrl'                  => admin_url( 'admin-ajax.php' ),
			'nonce'                    => wp_create_nonce( 'afromewo_save_workflow' ),
			'fetchActionTemplateNonce' => wp_create_nonce( 'afromewo_fetch_action_template' ),
			'workflow'                 => $workflow_data,
			'whatsappTemplates'        => $this->vars['whatsappTemplates'] ?? array(),
			'emailTemplates'           => SendEmailAction::getEmailTemplatesForDropdown(),
			'variables'                => Conditions::getVariables(),
			'operators'                => Conditions::getOperators(),
			'delayUnits'               => array(
				'minutes' => __( 'Minutes', 'afroit-messaging-workflows' ),
				'hours'   => __( 'Hours', 'afroit-messaging-workflows' ),
				'days'    => __( 'Days', 'afroit-messaging-workflows' ),
			),
			'i18n'                     => array(
				'saving'                  => __( 'Saving…', 'afroit-messaging-workflows' ),
				'saved'                   => __( 'Workflow saved successfully.', 'afroit-messaging-workflows' ),
				'error'                   => __( 'An error occurred. Please try again.', 'afroit-messaging-workflows' ),
				'save'                    => __( 'Save Workflow', 'afroit-messaging-workflows' ),
				'edit'                    => __( 'Edit', 'afroit-messaging-workflows' ),
				'delete'                  => __( 'Delete', 'afroit-messaging-workflows' ),
				'label'                   => __( 'Step label', 'afroit-messaging-workflows' ),
				'cancel'                  => __( 'Cancel', 'afroit-messaging-workflows' ),
				'update'                  => __( 'Update', 'afroit-messaging-workflows' ),
				'actions'                 => __( 'Actions', 'afroit-messaging-workflows' ),
				'workflow'                => __( 'Workflow', 'afroit-messaging-workflows' ),
				'dragHere'                => __( 'Drag actions here to build your workflow', 'afroit-messaging-workflows' ),
				'minutes'                 => __( 'Minutes', 'afroit-messaging-workflows' ),
				'template'                => __( 'Template', 'afroit-messaging-workflows' ),
				'selectTemplate'          => __( 'Select template', 'afroit-messaging-workflows' ),
				'sendWhatsAppInstructions' => __( 'The customer must have a phone number saved. This action runs in the context of a WooCommerce order.', 'afroit-messaging-workflows' ),
				'wait'                    => __( 'Wait', 'afroit-messaging-workflows' ),
				'sendWhatsApp'            => __( 'Send WhatsApp Message', 'afroit-messaging-workflows' ),
				'sendSms'                 => __( 'Send SMS', 'afroit-messaging-workflows' ),
					'sendEmail'               => __( 'Send Email', 'afroit-messaging-workflows' ),
					'stop'                    => __( 'Stop', 'afroit-messaging-workflows' ),
					'branch'                  => __( 'Branch (If/Else)', 'afroit-messaging-workflows' ),
					'ifTrue'                  => __( 'IF TRUE', 'afroit-messaging-workflows' ),
				'ifFalse'                 => __( 'IF FALSE', 'afroit-messaging-workflows' ),
				'dragActionsHere'         => __( 'Drag actions here', 'afroit-messaging-workflows' ),
				'collapse'                => __( 'Collapse/Expand', 'afroit-messaging-workflows' ),
			),
		);

		/**
		 * Filter localized data for the workflow builder.
		 *
		 * @param array<string, mixed> $data          Script data.
		 * @param array<string, mixed>|null $workflow_data Workflow being edited, if any.
		 */
		$filtered = apply_filters( 'afromewo_workflow_builder_script_data', $data, $workflow_data );

		return is_array( $filtered ) ? $filtered : $data;
	}

	/**
	 * Get view path.
	 *
	 * @return string
	 */
	protected function getViewPath() {
		if ( $this->vars['workflow_id'] > 0 && ! empty( $this->vars['workflow'] ) ) {
			return AFROMEWO_PLUGIN_DIR . 'includes/Admin/Automation/Views/edit-automation.php';
		}
		return AFROMEWO_PLUGIN_DIR . 'includes/Admin/Automation/Views/create-automation.php';
	}
}