<?php

namespace WPFormsPDF;

use WPForms\Helpers\File;
use WPFormsPDF\Access\PDF as AccessPDF;
use WPFormsPDF\Notifications\Process;

/**
 * PDF helpers.
 *
 * @since 1.0.0
 */
class Helpers {

	/**
	 * Detect debug mode.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 * @noinspection PhpUndefinedConstantInspection
	 */
	public function is_debug(): bool {

		return defined( 'WPFORMS_PDF_DEBUG' ) && WPFORMS_PDF_DEBUG;
	}

	/**
	 * Log message.
	 *
	 * @since 1.0.0
	 *
	 * @param mixed  $message Log a message or any data.
	 * @param string $type    Message type.
	 */
	public function log( $message, string $type = 'log' ): void {

		if (
			! (
				( $this->is_debug() && $type === 'debug' ) || // The `debug` messages are allowed only in WPFORMS_PDF_DEBUG mode.
				( in_array( $type, [ 'log', 'error' ], true ) )
			)
		) {
			return;
		}

		// Output to the error.log only `debug` messages.
		if ( $type === 'debug' ) {
			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r
			$message_str = is_array( $message ) || is_object( $message ) ? print_r( $message, true ) : $message;

			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
			error_log( 'WPForms PDF: ' . $message_str );
		}

		wpforms_log( 'WPForms PDF', $message, [ 'type' => $type === 'debug' ? 'log' : $type ] );
	}

	/**
	 * Get uploads directory data.
	 *
	 * @since 1.0.0
	 *
	 * @return array
	 */
	public function get_wp_upload_dir(): array {

		static $data = null;

		if ( $data ) {
			return $data;
		}

		$data = [
			'dir' => '',
			'url' => '',
		];

		$upload_dir = wp_upload_dir();

		if ( ! empty( $upload_dir['error'] ) ) {
			return $data;
		}

		$basedir     = wp_is_stream( $upload_dir['basedir'] ) ? $upload_dir['basedir'] : realpath( $upload_dir['basedir'] );
		$data['dir'] = trailingslashit( wp_normalize_path( $basedir ) );
		$data['url'] = trailingslashit( $upload_dir['baseurl'] );

		return $data;
	}

	/**
	 * Determine if the license is valid.
	 *
	 * @since 1.2.0
	 *
	 * @return bool
	 */
	public function is_valid_license(): ?bool {

		static $is_valid = null;

		if ( $is_valid !== null ) {
			return $is_valid;
		}

		// License data.
		$license = (array) get_option( 'wpforms_license', [] );

		$is_valid = ! empty( wpforms_get_license_key() )
			&& ! empty( $license['type'] )
			&& empty( $license['is_expired'] )
			&& empty( $license['is_disabled'] )
			&& empty( $license['is_invalid'] );

		return $is_valid;
	}

	/**
	 * Get PDF download URL.
	 *
	 * @since 1.2.0
	 *
	 * @param int   $pdf_id    PDF ID.
	 * @param array $pdf       PDF data.
	 * @param array $form_data Form data.
	 * @param array $fields    Entry fields.
	 * @param int   $entry_id  Entry ID.
	 *
	 * @return string
	 */
	public static function get_pdf_download_url( int $pdf_id, array $pdf, array $form_data, array $fields, int $entry_id ): string {

		// Access restriction enabled, special download link.
		if ( ! empty( $pdf['access'] ) ) {
			return AccessPDF::generate_pdf_download_url( $form_data['id'], $entry_id, $pdf_id );
		}

		$file_name = Process::get_pdf_file_name( $pdf, $form_data, $fields, $entry_id );
		$file_path = Storage::get_dir( $form_data['id'], $entry_id ) . $file_name;

		if ( ! File::exists( $file_path ) || ! File::get_contents( $file_path ) ) {
			return '';
		}

		// No access restriction, direct download link.
		return Storage::get_url( $form_data['id'], $entry_id ) . $file_name;
	}
}