<?php
/**
 * Compatibility: Dokan (Multi-Vendor)
 *
 * Provides:
 * - Unified CTA:
 *     • Seller/Admin → “Upload”
 *     • Guest/Customer → “Start Selling” (links to My Account with ?become_vendor=1)
 * - “Become a Seller” button in WooCommerce My Account (for non-sellers)
 * - Auto-upgrade flow via ?become_vendor=1 (customer → seller, then redirect)
 *
 * All logic is dependency-safe: if Dokan/WooCommerce are missing, it quietly no-ops.
 *
 * @package BongotoMarketplace
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/* ---------------------------------
 * 0) Guards + safe My Account URL
 * --------------------------------- */

if ( ! function_exists( 'bongoto_is_dokan_active' ) ) {
	function bongoto_is_dokan_active(): bool {
		return class_exists( 'WeDevs_Dokan' );
	}
}

if ( ! function_exists( 'bongoto_safe_account_url' ) ) {
	function bongoto_safe_account_url(): string {
		// Prefer theme helper if available.
		if ( function_exists( 'bongoto_get_account_url' ) ) {
			$url = bongoto_get_account_url();
			if ( $url ) {
				return $url;
			}
		}
		// WooCommerce My Account if present.
		if ( function_exists( 'wc_get_page_permalink' ) ) {
			$my = wc_get_page_permalink( 'myaccount' );
			if ( $my ) {
				return $my;
			}
		}
		// Fallback to WP login (or site root).
		$login = wp_login_url();
		return $login ? $login : home_url( '/' );
	}
}

/* -----------------------
 * 1) Vendor / URL helpers
 * ----------------------- */

if ( ! function_exists( 'bongoto_is_vendor_user' ) ) {
	function bongoto_is_vendor_user(): bool {
		if ( ! bongoto_is_dokan_active() || ! is_user_logged_in() ) {
			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(): string {
		if ( bongoto_is_dokan_active() ) {
			$pages = get_option( 'dokan_pages', array() );
			if ( ! empty( $pages['dashboard'] ) ) {
				$link = get_permalink( (int) $pages['dashboard'] );
				if ( $link ) {
					return $link;
				}
			}
			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(): string {
		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 ): string {
		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(): string {
		return add_query_arg( 'become_vendor', '1', bongoto_safe_account_url() );
	}
}

if ( ! function_exists( 'bongoto_get_upload_url' ) ) {
	function bongoto_get_upload_url(): string {
		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();
	}
}

/**
 * Header CTA payload (kept here but wrapped to avoid double-define).
 * Theme may already define a version; only define if missing.
 */
if ( ! function_exists( 'bongoto_get_header_cta' ) ) {
	function bongoto_get_header_cta(): array {
		$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;
			}
			// Treat admins/managers as “seller-like”.
			if ( current_user_can( 'manage_options' ) || current_user_can( 'edit_products' ) ) {
				$is_seller = true;
			}
		}

		$payload = $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' );

		return apply_filters( 'bongoto/header_cta', $payload );
	}
}

/* ----------------
 * 3) Body classes
 * ---------------- */

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' );

/* ---------------------------------------------------------------
 * 4) My Account dashboard: “Become a Seller” button (customers)
 * --------------------------------------------------------------- */

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 );

/* ----------------------------------------------------------------
 * 5) Auto-upgrade: ?become_vendor=1 → customer → seller (no loop)
 * ---------------------------------------------------------------- */

if ( ! function_exists( 'bongoto_handle_become_vendor' ) ) {
	function bongoto_handle_become_vendor() {
		$param = isset( $_GET['become_vendor'] ) ? wp_unslash( $_GET['become_vendor'] ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		if ( '1' !== $param ) {
			return;
		}

		// Must be logged in; login screen will preserve redirect via login filter below.
		if ( ! is_user_logged_in() ) {
			return;
		}

		// Already a seller → dashboard.
		if ( bongoto_is_vendor_user() ) {
			wp_safe_redirect( bongoto_dokan_dashboard_url() );
			exit;
		}

		$user_id = get_current_user_id();

		// Prefer Dokan APIs.
		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' );

			// Bootstrap minimal profile if missing (helps first-time dashboard UX).
			$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;
		}

		// If Dokan is missing, just land back on account page.
		wp_safe_redirect( bongoto_safe_account_url() );
		exit;
	}
}
add_action( 'template_redirect', 'bongoto_handle_become_vendor', 1 );

/* -----------------------------------------------------------------
 * 6) Login redirect: preserve become_vendor=1 intent after login
 * ----------------------------------------------------------------- */

if ( ! function_exists( 'bongoto_login_redirect_vendor' ) ) {
	/**
	 * @param string   $redirect Default redirect.
	 * @param WP_User  $user     Logged in user.
	 */
	function bongoto_login_redirect_vendor( $redirect, $user ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
		$want_vendor = false;

		// Check query param or referrer query.
		$req = isset( $_REQUEST['become_vendor'] ) ? wp_unslash( $_REQUEST['become_vendor'] ) : ''; // phpcs:ignore WordPress.Security.NonceVerification
		if ( '1' === $req ) {
			$want_vendor = true;
		} else {
			$ref = isset( $_SERVER['HTTP_REFERER'] ) ? wp_unslash( $_SERVER['HTTP_REFERER'] ) : '';
			if ( $ref && false !== strpos( $ref, '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 );

/* --------------------------
 * 7) Optional header links
 * -------------------------- */

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>';
	}
}