<?php
/**
 * Compatibility: Dokan (Multi-Vendor)
 * - Unified CTA (Seller=Upload, Guest/Customer=Start Selling → My Account + ?become_vendor=1)
 * - My Account এ “Become a Seller” বাটন (customer হলে)
 * - Auto-upgrade: ?become_vendor=1 → customer → seller (+redirect to Dokan dashboard)
 */

if ( ! defined( 'ABSPATH' ) ) { exit; }

/* ---------------------------
 * 0) Guards + safe My Account
 * --------------------------- */
if ( ! function_exists( 'bongoto_is_dokan_active' ) ) {
	function bongoto_is_dokan_active() {
		return class_exists( 'WeDevs_Dokan' );
	}
}
if ( ! function_exists( 'bongoto_safe_account_url' ) ) {
	function bongoto_safe_account_url() {
		if ( function_exists( 'bongoto_get_account_url' ) ) {
			$url = bongoto_get_account_url();
			if ( $url ) return $url;
		}
		if ( function_exists( 'wc_get_page_permalink' ) ) {
			$my = wc_get_page_permalink( 'myaccount' );
			if ( $my ) return $my;
		}
		$login = wp_login_url();
		return $login ? $login : home_url( '/' );
	}
}

/* ---------------------------
 * 1) Vendor / URLs
 * --------------------------- */
if ( ! function_exists( 'bongoto_is_vendor_user' ) ) {
	function bongoto_is_vendor_user() {
		if ( ! bongoto_is_dokan_active() ) return false;
		return function_exists( 'dokan_is_user_seller' ) && dokan_is_user_seller( get_current_user_id() );
	}
}
if ( ! function_exists( 'bongoto_dokan_dashboard_url' ) ) {
	function bongoto_dokan_dashboard_url() {
		if ( bongoto_is_dokan_active() ) {
			$pages = get_option( 'dokan_pages', array() );
			if ( ! empty( $pages['dashboard'] ) ) {
				$permalink = get_permalink( (int) $pages['dashboard'] );
				if ( $permalink ) return $permalink;
			}
			if ( function_exists( 'dokan_get_page_url' ) ) {
				$url = dokan_get_page_url( 'dashboard', 'dokan' );
				if ( $url ) return $url;
			}
		}
		return bongoto_safe_account_url();
	}
}
if ( ! function_exists( 'bongoto_dokan_new_product_url' ) ) {
	function bongoto_dokan_new_product_url() {
		if ( bongoto_is_dokan_active() && function_exists( 'dokan_get_navigation_url' ) ) {
			return dokan_get_navigation_url( 'new-product' );
		}
		if ( current_user_can( 'edit_products' ) ) {
			return admin_url( 'post-new.php?post_type=product' );
		}
		return bongoto_safe_account_url();
	}
}
if ( ! function_exists( 'bongoto_dokan_store_url' ) ) {
	function bongoto_dokan_store_url( $user_id = null ) {
		if ( ! bongoto_is_dokan_active() ) return home_url( '/' );
		$user_id = $user_id ? (int) $user_id : get_current_user_id();
		if ( function_exists( 'dokan_get_store_url' ) ) return dokan_get_store_url( $user_id );
		return home_url( '/' );
	}
}

/* ---------------------------
 * 2) CTA helpers
 * --------------------------- */
if ( ! function_exists( 'bongoto_get_start_selling_url' ) ) {
	function bongoto_get_start_selling_url() {
		return add_query_arg( 'become_vendor', '1', bongoto_safe_account_url() );
	}
}
if ( ! function_exists( 'bongoto_get_upload_url' ) ) {
	function bongoto_get_upload_url() {
		if ( bongoto_is_dokan_active() && function_exists( 'dokan_get_navigation_url' ) ) {
			return dokan_get_navigation_url( 'new-product' );
		}
		if ( current_user_can( 'edit_products' ) ) {
			return admin_url( 'post-new.php?post_type=product' );
		}
		return bongoto_safe_account_url();
	}
}
if ( ! function_exists( 'bongoto_get_header_cta' ) ) {
	function bongoto_get_header_cta() {
		$is_seller = false;
		if ( is_user_logged_in() ) {
			if ( bongoto_is_dokan_active()
				&& function_exists( 'dokan_is_user_seller' )
				&& dokan_is_user_seller( get_current_user_id() ) ) {
				$is_seller = true;
			}
			if ( current_user_can( 'manage_options' ) ) $is_seller = true; // admin
		}
		return apply_filters(
			'bongoto/header_cta',
			$is_seller
				? array( 'label' => __( 'Upload', 'bongoto' ), 'url' => bongoto_get_upload_url(), 'icon' => 'upload' )
				: array( 'label' => __( 'Start Selling', 'bongoto' ), 'url' => bongoto_get_start_selling_url(), 'icon' => 'upload' )
		);
	}
}

/* ---------------------------
 * 3) Body class
 * --------------------------- */
if ( ! function_exists( 'bongoto_dokan_body_class' ) ) {
	function bongoto_dokan_body_class( $classes ) {
		if ( bongoto_is_dokan_active() ) {
			$classes[] = 'has-dokan';
			if ( bongoto_is_vendor_user() ) $classes[] = 'is-vendor';
		}
		return $classes;
	}
}
add_filter( 'body_class', 'bongoto_dokan_body_class' );


/* -------------------------------------------------------------
 * 5) My Account ড্যাশবোর্ডে "Become a Seller" বাটন (customer)
 * ------------------------------------------------------------- */
if ( ! function_exists( 'bongoto_account_become_seller_button' ) ) {
	function bongoto_account_become_seller_button() {
		if ( ! is_user_logged_in() || bongoto_is_vendor_user() ) return;

		$target = '';
		if ( bongoto_is_dokan_active() && function_exists( 'dokan_get_page_url' ) ) {
			$maybe = dokan_get_page_url( 'registration', 'dokan' );
			if ( ! $maybe ) $maybe = dokan_get_page_url( 'reg', 'dokan' );
			if ( $maybe ) $target = $maybe;
		}
		if ( ! $target ) $target = bongoto_get_start_selling_url();

		echo '<div class="bt-account-become-seller" style="margin:1.25rem 0 0;">';
		echo '<a class="button button-primary" href="' . esc_url( $target ) . '">'
			. esc_html__( 'Become a Seller', 'bongoto' ) . '</a>';
		echo '</div>';
	}
}
add_action( 'woocommerce_account_dashboard', 'bongoto_account_become_seller_button', 25 );

/* --------------------------------------------------------------------
 * 6) Auto-upgrade handler: ?become_vendor=1 → customer → seller (NO LOOP)
 * -------------------------------------------------------------------- */
if ( ! function_exists( 'bongoto_handle_become_vendor' ) ) {
	function bongoto_handle_become_vendor() {
		if ( empty( $_GET['become_vendor'] ) ) return;

		// গেস্ট হলে রিডাইরেক্ট নয়; Woo নিজে লগইন ফর্ম দেখাবে।
		if ( ! is_user_logged_in() ) return;

		// Already seller → dashboard
		if ( bongoto_is_vendor_user() ) {
			wp_safe_redirect( bongoto_dokan_dashboard_url() );
			exit;
		}

		$user_id = get_current_user_id();

		// Dokan preferred
		if ( bongoto_is_dokan_active() ) {
			if ( function_exists( 'dokan_set_new_seller_role' ) ) {
				dokan_set_new_seller_role( $user_id );
			} else {
				$user = new WP_User( $user_id );
				$user->add_role( 'seller' );
			}
			update_user_meta( $user_id, 'dokan_enable_selling', 'yes' );

			$profile = get_user_meta( $user_id, 'dokan_profile_settings', true );
			if ( empty( $profile ) || ! is_array( $profile ) ) {
				$display = wp_get_current_user()->display_name;
				update_user_meta( $user_id, 'dokan_profile_settings', array(
					'store_name' => $display ? ( $display . '\'s Store' ) : 'My Store',
				) );
			}

			wp_safe_redirect( bongoto_dokan_dashboard_url() );
			exit;
		}

		wp_safe_redirect( bongoto_safe_account_url() );
		exit;
	}
}
add_action( 'template_redirect', 'bongoto_handle_become_vendor', 1 );

/* -------------------------------------------------------------
 * 7) Login redirect: রেফারারে become_vendor=1 থাকলে লগইনের পরও সেটি বজায়
 * ------------------------------------------------------------- */
if ( ! function_exists( 'bongoto_login_redirect_vendor' ) ) {
	function bongoto_login_redirect_vendor( $redirect, $user ) {
		$want_vendor = false;

		if ( isset( $_REQUEST['become_vendor'] ) && '1' === $_REQUEST['become_vendor'] ) {
			$want_vendor = true;
		} elseif ( ! empty( $_SERVER['HTTP_REFERER'] ) && false !== strpos( $_SERVER['HTTP_REFERER'], 'become_vendor=1' ) ) {
			$want_vendor = true;
		}

		if ( $want_vendor ) {
			return add_query_arg( 'become_vendor', '1', bongoto_safe_account_url() );
		}
		return $redirect;
	}
}
add_filter( 'woocommerce_login_redirect', 'bongoto_login_redirect_vendor', 10, 2 );

/* ---------------------------
 * 8) Optional header helpers
 * --------------------------- */
if ( ! function_exists( 'bongoto_dokan_account_link' ) ) {
	function bongoto_dokan_account_link() {
		$url = bongoto_safe_account_url();
		echo '<a class="bt-account-link" href="' . esc_url( $url ) . '">';
		if ( function_exists( 'bongoto_icon' ) ) {
			bongoto_icon( 'account', array( 'width' => 20, 'height' => 20 ) );
		}
		echo '<span class="screen-reader-text">' . esc_html__( 'My Account', 'bongoto' ) . '</span></a>';
	}
}
if ( ! function_exists( 'bongoto_dokan_store_link' ) ) {
	function bongoto_dokan_store_link() {
		if ( ! bongoto_is_vendor_user() ) return;
		$url = bongoto_dokan_store_url();
		echo '<a class="bt-store-link" href="' . esc_url( $url ) . '">' . esc_html__( 'My Store', 'bongoto' ) . '</a>';
	}
}