<?php
/**
 * Customer → Vendor upgrade (My Account endpoint)
 * Path: inc/compatibility/dokan-customer-upgrade.php
 *
 * What this does (when WooCommerce + Dokan are active):
 * - Registers a pretty endpoint: /my-account/bongoto-become-vendor/
 * - Adds a "Start Selling" item in My Account (only for non-seller users)
 * - Handles the flow:
 *      • Not logged in  → redirect to My Account
 *      • Already seller → redirect to Dokan Dashboard
 *      • AUTO APPROVE   → promote to seller & enable selling, then redirect
 *      • Otherwise      → show a notice that the request is received
 *
 * Safe to keep disabled: if either WooCommerce or Dokan is not active,
 * this file quietly does nothing.
 *
 * @package BongotoMarketplace
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Quick helpers
 */
function bongoto_dc_is_woo_active(): bool {
	return class_exists( 'WooCommerce' );
}
function bongoto_dc_is_dokan_active(): bool {
	return class_exists( 'WeDevs_Dokan' );
}

/**
 * A) Flush rewrite rules on theme switch (once)
 */
add_action( 'after_switch_theme', function () {
	// Ensure endpoint rules are registered cleanly after theme changes.
	flush_rewrite_rules();
} );

/**
 * B) Register endpoint (for pretty URL)
 * Only if WooCommerce is active (since this lives under My Account).
 */
add_action( 'init', function () {
	if ( ! bongoto_dc_is_woo_active() ) {
		return;
	}
	add_rewrite_endpoint( 'bongoto-become-vendor', EP_ROOT | EP_PAGES );
}, 9 );

/**
 * C) Add My Account menu item for guest/customer (only if Dokan active)
 */
add_filter( 'woocommerce_account_menu_items', function ( $items ) {
	// Must have Woo + Dokan; otherwise skip entirely.
	if ( ! bongoto_dc_is_woo_active() || ! bongoto_dc_is_dokan_active() ) {
		return $items;
	}

	// If logged-in seller already, don't add.
	if ( is_user_logged_in() && function_exists( 'dokan_is_user_seller' ) && dokan_is_user_seller( get_current_user_id() ) ) {
		return $items;
	}

	$items        = (array) $items;
	$new          = array();
	$inserted     = false;

	foreach ( $items as $key => $label ) {
		$new[ $key ] = $label;

		// Insert after Dashboard or Orders for better visibility.
		if ( ! $inserted && ( 'dashboard' === $key || 'orders' === $key ) ) {
			$new['bongoto-become-vendor'] = __( 'Start Selling', 'bongoto' );
			$inserted = true;
		}
	}

	if ( ! $inserted ) {
		$new['bongoto-become-vendor'] = __( 'Start Selling', 'bongoto' );
	}

	return $new;
}, 50 );

/**
 * D) Core handler (what to do when user hits the endpoint)
 */
function bongoto_handle_become_vendor() {
	$my_account = function_exists( 'wc_get_page_permalink' )
		? trailingslashit( wc_get_page_permalink( 'myaccount' ) )
		: home_url( '/my-account/' );

	// Must be logged in to proceed.
	if ( ! is_user_logged_in() ) {
		wp_safe_redirect( $my_account );
		exit;
	}

	$user_id = get_current_user_id();

	// Require Dokan for vendor flow.
	if ( ! bongoto_dc_is_dokan_active() ) {
		wp_safe_redirect( $my_account );
		exit;
	}

	$dashboard_url = function_exists( 'dokan_get_page_url' )
		? dokan_get_page_url( 'dashboard', 'dokan' )
		: $my_account;

	// Already a seller? Go to Dokan Dashboard.
	if ( function_exists( 'dokan_is_user_seller' ) && dokan_is_user_seller( $user_id ) ) {
		wp_safe_redirect( $dashboard_url );
		exit;
	}

	// Auto-approve path: if the constant is defined & truthy.
	if ( defined( 'BONGOTO_AUTO_APPROVE_VENDOR' ) && BONGOTO_AUTO_APPROVE_VENDOR ) {
		$user = get_userdata( $user_id );
		if ( $user instanceof WP_User ) {
			$user->set_role( 'seller' ); // Dokan's default vendor role is usually 'seller'.
		} else {
			$u = new WP_User( $user_id );
			$u->set_role( 'seller' );
		}
		update_user_meta( $user_id, 'dokan_enable_selling', 'yes' );

		wp_safe_redirect( $dashboard_url );
		exit;
	}

	// Manual-approval path: show an informational notice.
	if ( function_exists( 'wc_print_notice' ) ) {
		wc_print_notice(
			__( 'Your request to become a vendor has been received. Please wait for approval.', 'bongoto' ),
			'notice'
		);
	}

	echo '<p><a class="button" href="' . esc_url( $my_account ) . '">' . esc_html__( 'Back to My Account', 'bongoto' ) . '</a></p>';
}

/**
 * WooCommerce endpoint hook (only if Woo is active)
 */
if ( bongoto_dc_is_woo_active() ) {
	add_action( 'woocommerce_account_bongoto-become-vendor_endpoint', 'bongoto_handle_become_vendor' );
}

/**
 * E) Safety net: query-var fallback (avoids 404 if pretty permalinks fail)
 * - Normal:      /my-account/bongoto-become-vendor/
 * - Fallback qs: ?bongoto-become-vendor=1
 */
add_action( 'template_redirect', function () {
	if ( ! bongoto_dc_is_woo_active() ) {
		return;
	}

	$triggered = ( get_query_var( 'bongoto-become-vendor', false ) !== false ) || isset( $_GET['bongoto-become-vendor'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	if ( $triggered ) {
		bongoto_handle_become_vendor();
		exit;
	}
} );