<?php

/**
 * Admin post actions (connect, disconnect, reset, etc.).
 *
 * @package AfroIT_Messaging_WorkflowAutomations
 */

namespace AfroIT\Messaging\WorkflowAutomations\Admin;


use AfroIT\Messaging\WorkflowAutomations\Workflows\WorkflowStoreFactory;
use AfroIT\Messaging\WorkflowAutomations\Security\SecureOptions;
use AfroIT\Messaging\WorkflowAutomations\Settings\PluginSettings;
use AfroIT\Messaging\WorkflowAutomations\Meta\MetaOnboarding;
use AfroIT\Messaging\WorkflowAutomations\Meta\MetaMessaging;
use AfroIT\Messaging\WorkflowAutomations\Admin\Hub\HubPage;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class AdminActions {

	/**
	 * Map a legacy settings `_tab` POST value to hub `section` (under tab=settings).
	 *
	 * @param string $posted_tab Value from form hidden `_tab`.
	 * @return string Section slug for the hub.
	 */
	private function hub_settings_section_from_posted_tab( string $posted_tab ): string {
		$sections = array_keys( HubPage::get_settings_sections() );
		if ( in_array( $posted_tab, $sections, true ) ) {
			return $posted_tab;
		}
		// e.g. sync_settings — not a hub section; land on prerequisites after save.
		return 'prerequisites';
	}

	/**
	 * Redirect URL for hub: Settings tab + section + optional query args.
	 *
	 * @param string               $section Settings section (prerequisites, facebook_app, …).
	 * @param array<string, mixed> $extra   Extra query args (e.g. afromewo_notice).
	 * @return string
	 */
	private function redirect_hub_settings( string $section, array $extra = array() ): string {
		return HubPage::url(
			array_merge(
				array(
					'tab'     => 'settings',
					'section' => $this->hub_settings_section_from_posted_tab( $section ),
				),
				$extra
			)
		);
	}

	/**
	 * Register hooks.
	 *
	 * @return void
	 */
	public function register() {
		add_action( 'admin_post_afromewo_save_settings', array( $this, 'save_settings' ) );
		add_action( 'admin_post_afromewo_save_business', array( $this, 'save_business' ) );
		add_action( 'admin_post_wp_wacc_delete_template', array( $this, 'delete_template' ) );
		add_action( 'admin_post_afromewo_delete_automation', array( $this, 'delete_automation' ) );
		add_action( 'admin_post_afromewo_toggle_automation', array( $this, 'toggle_automation' ) );
		add_action( 'admin_post_afromewo_delete_execution_queue_item', array( $this, 'delete_execution_queue_item' ) );
		add_action( 'admin_post_afromewo_dismiss_pro_upgrade', array( $this, 'dismiss_pro_upgrade' ) );
	}

	/**
	 * Dismiss the Pro add-on notice on the workflow builder (per user).
	 *
	 * @return void
	 */
	public function dismiss_pro_upgrade(): void {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		check_admin_referer( 'afromewo_dismiss_pro_upgrade' );
		ProUpgrade::dismiss_for_current_user();

		wp_safe_redirect( ProUpgrade::builder_url( absint( Request::get( 'workflow_id', '0' ) ) ) );
		exit;
	}

	/**
	 * Delete a workflow queue item.
	 *
	 * @return void
	 */
	public function delete_execution_queue_item() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		$id = (int) Request::get( 'queue_id', 0 );
		$redirect = Request::get_raw( 'redirect', '' );
		$redirect = '' !== $redirect ? rawurldecode( $redirect ) : HubPage::url( array( 'tab' => 'automations', 'section' => 'executed' ) );

		if ( $id <= 0 ) {
			wp_safe_redirect( add_query_arg( array( 'afromewo_notice' => 'queue_delete_missing_id' ), $redirect ) );
			exit;
		}

		check_admin_referer( 'afromewo_delete_execution_queue_item_' . $id );

		global $wpdb;
		$table = $wpdb->prefix . 'afromewo_workflow_queue';
		$deleted = (bool) $wpdb->delete( $table, array( 'id' => $id ), array( '%d' ) ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- custom plugin table; delete by primary key, not a cached WP object.

		$notice = $deleted ? 'queue_item_deleted' : 'queue_item_delete_failed';
		wp_safe_redirect( add_query_arg( array( 'afromewo_notice' => $notice ), $redirect ) );
		exit;
	}

	/**
	 * Save settings posted from the admin page.
	 *
	 * @return void
	 */
	public function save_settings() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		check_admin_referer( 'afromewo_save_settings' );

		$tab = Request::post( '_tab', 'prerequisites' );

		// Only update values that were actually posted from the current tab,
		// so saving one tab doesn't wipe fields from another.
		$settings = PluginSettings::get_instance();
		$needs_reconnect = false;

		if ( 'facebook_app' === $tab ) {
			if ( Request::has_post( 'afromewo_facebook_app_id' ) ) {
				$facebook_app_id = Request::post( 'afromewo_facebook_app_id', '' );
				$settings->set_facebook_app_id( $facebook_app_id );
				$needs_reconnect = true;
			}

			if ( Request::has_post( 'afromewo_return_url' ) ) {
				$return_url = Request::post_url( 'afromewo_return_url', '' );
				$settings->set_return_url( $return_url );
				$needs_reconnect = true;
			}

			$facebook_app_secret = Request::post_raw( 'afromewo_facebook_app_secret', '' );
			if ( '' !== trim( $facebook_app_secret ) ) {
				( new SecureOptions() )->set( 'facebook_app_secret', $facebook_app_secret );
				$needs_reconnect = true;
			}

			// System user token (manual entry; encrypted). Same tab only.
			$system_user_token = Request::post_raw( 'afromewo_system_user_token', '' );
			if ( '' !== trim( $system_user_token ) ) {
                // @TODO validate the system user token before saving
				( new SecureOptions() )->set( 'system_user_token', $system_user_token );
				$needs_reconnect = true;
			}
		}

		if ( 'twilio' === $tab ) {
			$twilio_account_sid = trim( Request::post( 'afromewo_twilio_account_sid', '' ) );
			$twilio_auth_token = trim( Request::post( 'afromewo_twilio_auth_token', '' ) );
			$twilio_from_number = Request::post( 'afromewo_twilio_from_number', '' );
			if ( '' !== $twilio_account_sid ) {
				( new SecureOptions() )->set( 'twilio_account_sid', $twilio_account_sid );
			}
			if ( '' !== $twilio_auth_token ) {
				( new SecureOptions() )->set( 'twilio_auth_token', $twilio_auth_token );
			}
			if ( Request::has_post( 'afromewo_twilio_from_number' ) ) {
				$settings->set_twilio_from_number( $twilio_from_number );
			}
		}

		if ( 'prerequisites' === $tab ) {
            $settings->set_debug_logging( (string) Request::post( 'afromewo_enable_debug_logging', '0' ) === '1' ? 'yes' : 'no' );
            $settings->set_ask_consent( (string) Request::post( 'afromewo_ask_consent', '0' ) === '1' ? 'yes' : 'no' );
            $settings->set_check_tracking_consent( (string) Request::post( 'afromewo_check_tracking_consent', '0' ) === '1' ? 'yes' : 'no' );
		}

		// If connection-related settings changed, force a reconnect.
		if ( $needs_reconnect ) {
			$settings->set_connected( false );
		}

		wp_safe_redirect(
			$this->redirect_hub_settings(
				$tab,
				array( 'afromewo_saved' => '1' )
			)
		);
		exit;
	}

	public function save_business() {
        if ( ! current_user_can( 'manage_woocommerce' ) ) {
            wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
        }
        
        check_admin_referer( 'afromewo_save_business' );

        $selected_business = Request::post( 'wp_waba_selected_business', '' );
		if ( ! $selected_business ) {
			wp_safe_redirect(
				$this->redirect_hub_settings(
					'facebook_business',
					array( 'afromewo_notice' => 'no_business_selected' )
				)
			);
			exit;
		}

		// @TODO split the business to the three parts and validate them
		$business_parts = explode( ',', $selected_business );
		if ( count( $business_parts ) !== 3 ) {
			wp_safe_redirect(
				$this->redirect_hub_settings(
					'facebook_business',
					array( 'afromewo_notice' => 'invalid_business' )
				)
			);
			exit;
		}

		$secure_options = new SecureOptions();
		$secure_options->set( 'selected_business', $selected_business );
		list( $business_id, $waba_id, $phone_id ) = explode( ',', $selected_business );
		$user_access_token = $secure_options->get( 'user_access_token', '' );

		if ( ! $user_access_token ) {
			wp_safe_redirect(
				$this->redirect_hub_settings(
					'facebook_business',
					array( 'afromewo_notice' => 'no_user_access_token' )
				)
			);
			exit;
		}

		$meta_onboarding         = new MetaOnboarding();
		$system_user_and_token = $meta_onboarding->ensureSystemUserAndToken( $business_id, $waba_id, $phone_id, $user_access_token );
		if ( ! $system_user_and_token ) {
			wp_safe_redirect(
				$this->redirect_hub_settings(
					'facebook_business',
					array( 'afromewo_notice' => 'failed_to_ensure_system_user_and_token' )
				)
			);
			exit;
		}

		$secure_options->set( 'system_user_id', $system_user_and_token['system_user_id'] );
		$secure_options->set( 'system_user_token', $system_user_and_token['system_user_token'] );

		wp_safe_redirect(
			$this->redirect_hub_settings(
				'facebook_business',
				array( 'afromewo_notice' => 'business_selected' )
			)
		);
		exit;
	}

	/**
	 * Delete a message template.
	 *
	 * @return void
	 */
	public function delete_template() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		$id = Request::get( 'id', '' );
        $name = Request::get( 'name', '' );
		if ( '' === $id || '' === $name ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'templates',
						'afromewo_notice' => 'template_delete_missing_id_or_name',
					)
				)
			);
			exit;
		}

		check_admin_referer( 'delete_template_' . $id );

		$secure   = new SecureOptions();
		$business = $secure->get_selected_business();
		if ( empty( $business['waba_id'] ) ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'templates',
						'afromewo_notice' => 'no_business',
					)
				)
			);
			exit;
		}

		$messaging = new MetaMessaging();
		if ( ! $messaging->deleteTemplate( $business['waba_id'], $id, $name ) ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'templates',
						'afromewo_notice' => 'template_delete_failed',
					)
				)
			);
			exit;
		}

		wp_safe_redirect(
			HubPage::url(
				array(
					'tab'          => 'templates',
					'afromewo_notice' => 'template_deleted',
				)
			)
		);
		exit;
	}

	/**
	 * Delete an automation workflow.
	 *
	 * @return void
	 */
	public function delete_automation() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		$id = Request::get( 'workflow_id', 0 );
		if ( ! $id ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'automations',
						'afromewo_notice' => 'automation_delete_missing_id',
					)
				)
			);
			exit;
		}

		check_admin_referer( 'delete_automation_' . $id );

		$store  = WorkflowStoreFactory::create();
		$result = $store->delete( (int) $id );
		if ( empty( $result['success'] ) ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'automations',
						'afromewo_notice' => 'automation_delete_failed',
					)
				)
			);
			exit;
		}

		wp_safe_redirect(
			HubPage::url(
				array(
					'tab'          => 'automations',
					'afromewo_notice' => 'automation_deleted',
				)
			)
		);
		exit;
	}

	/**
	 * Toggle automation active status.
	 *
	 * @return void
	 */
	public function toggle_automation() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'afroit-messaging-workflows' ) );
		}

		$id = Request::get( 'workflow_id', 0 );
		if ( ! $id ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'automations',
						'afromewo_notice' => 'automation_toggle_missing_id',
					)
				)
			);
			exit;
		}

		check_admin_referer( 'toggle_automation_' . $id );

		$store    = WorkflowStoreFactory::create();
		$workflow = $store->find( (int) $id );
		if ( ! $workflow ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'automations',
						'afromewo_notice' => 'automation_not_found',
					)
				)
			);
			exit;
		}

		$new_active = ! $workflow->isActive();
		$result     = $store->update_active_status( (int) $id, $new_active );
		if ( empty( $result['success'] ) ) {
			wp_safe_redirect(
				HubPage::url(
					array(
						'tab'          => 'automations',
						'afromewo_notice' => 'automation_toggle_failed',
					)
				)
			);
			exit;
		}

		// @TODO: maybe delete all the workflow queue items for this workflow if deactivated.
		// FIXME: alert the user that events already triggered will continue to be processed.

		$notice = $new_active ? 'automation_activated' : 'automation_deactivated';
		wp_safe_redirect(
			HubPage::url(
				array(
					'tab'          => 'automations',
					'afromewo_notice' => $notice,
				)
			)
		);
		exit;
	}

}