<?php
/**
 * Track Product Type for WooCommerce.
 *
 * @package WP_FediStream
 */

namespace WP_FediStream\WooCommerce;

// Prevent direct file access.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * FediStream Track product type.
 *
 * Digital product representing a single FediStream track.
 */
class TrackProduct extends \WC_Product {

	/**
	 * Product type.
	 *
	 * @var string
	 */
	protected $product_type = 'fedistream_track';

	/**
	 * Constructor.
	 *
	 * @param int|\WC_Product|object $product Product ID or object.
	 */
	public function __construct( $product = 0 ) {
		parent::__construct( $product );
	}

	/**
	 * Get product type.
	 *
	 * @return string
	 */
	public function get_type(): string {
		return 'fedistream_track';
	}

	/**
	 * Tracks are virtual products.
	 *
	 * @param string $context View or edit context.
	 * @return bool
	 */
	public function get_virtual( $context = 'view' ): bool {
		return true;
	}

	/**
	 * Tracks are downloadable products.
	 *
	 * @param string $context View or edit context.
	 * @return bool
	 */
	public function get_downloadable( $context = 'view' ): bool {
		return true;
	}

	/**
	 * Get the linked track ID.
	 *
	 * @return int
	 */
	public function get_linked_track_id(): int {
		return (int) $this->get_meta( '_fedistream_linked_track', true );
	}

	/**
	 * Get the linked track post.
	 *
	 * @return \WP_Post|null
	 */
	public function get_linked_track(): ?\WP_Post {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return null;
		}

		$track = get_post( $track_id );

		if ( ! $track || 'fedistream_track' !== $track->post_type ) {
			return null;
		}

		return $track;
	}

	/**
	 * Get the pricing type.
	 *
	 * @return string fixed, pwyw, or nyp
	 */
	public function get_pricing_type(): string {
		return $this->get_meta( '_fedistream_pricing_type', true ) ?: 'fixed';
	}

	/**
	 * Get minimum price for PWYW.
	 *
	 * @return float
	 */
	public function get_min_price(): float {
		return (float) $this->get_meta( '_fedistream_min_price', true );
	}

	/**
	 * Get suggested price for PWYW.
	 *
	 * @return float
	 */
	public function get_suggested_price(): float {
		return (float) $this->get_meta( '_fedistream_suggested_price', true );
	}

	/**
	 * Check if streaming is included.
	 *
	 * @return bool
	 */
	public function includes_streaming(): bool {
		return 'yes' === $this->get_meta( '_fedistream_include_streaming', true );
	}

	/**
	 * Get available download formats.
	 *
	 * @return array
	 */
	public function get_available_formats(): array {
		$formats = $this->get_meta( '_fedistream_available_formats', true );

		return is_array( $formats ) ? $formats : array( 'mp3' );
	}

	/**
	 * Get track duration in seconds.
	 *
	 * @return int
	 */
	public function get_duration(): int {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return 0;
		}

		return (int) get_post_meta( $track_id, '_fedistream_duration', true );
	}

	/**
	 * Get formatted duration.
	 *
	 * @return string
	 */
	public function get_formatted_duration(): string {
		$seconds = $this->get_duration();

		if ( ! $seconds ) {
			return '';
		}

		$mins = floor( $seconds / 60 );
		$secs = $seconds % 60;

		return sprintf( '%d:%02d', $mins, $secs );
	}

	/**
	 * Get artist name(s).
	 *
	 * @return string
	 */
	public function get_artist_name(): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		$artist_ids = get_post_meta( $track_id, '_fedistream_artist_ids', true );

		if ( ! is_array( $artist_ids ) || empty( $artist_ids ) ) {
			// Fall back to album artist.
			$album_id  = get_post_meta( $track_id, '_fedistream_album_id', true );
			$artist_id = $album_id ? get_post_meta( $album_id, '_fedistream_album_artist', true ) : 0;

			if ( $artist_id ) {
				$artist = get_post( $artist_id );
				return $artist ? $artist->post_title : '';
			}

			return '';
		}

		$names = array();
		foreach ( $artist_ids as $artist_id ) {
			$artist = get_post( $artist_id );
			if ( $artist ) {
				$names[] = $artist->post_title;
			}
		}

		return implode( ', ', $names );
	}

	/**
	 * Get album name.
	 *
	 * @return string
	 */
	public function get_album_name(): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		$album_id = get_post_meta( $track_id, '_fedistream_album_id', true );

		if ( ! $album_id ) {
			return '';
		}

		$album = get_post( $album_id );

		return $album ? $album->post_title : '';
	}

	/**
	 * Get track artwork URL.
	 *
	 * Falls back to album artwork if track has none.
	 *
	 * @param string $size Image size.
	 * @return string
	 */
	public function get_track_artwork( string $size = 'medium' ): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		// Try track thumbnail first.
		$thumbnail_id = get_post_thumbnail_id( $track_id );

		// Fall back to album artwork.
		if ( ! $thumbnail_id ) {
			$album_id     = get_post_meta( $track_id, '_fedistream_album_id', true );
			$thumbnail_id = $album_id ? get_post_thumbnail_id( $album_id ) : 0;
		}

		if ( ! $thumbnail_id ) {
			return '';
		}

		$image = wp_get_attachment_image_url( $thumbnail_id, $size );

		return $image ?: '';
	}

	/**
	 * Get audio file URL.
	 *
	 * @return string
	 */
	public function get_audio_url(): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		$audio_id = get_post_meta( $track_id, '_fedistream_audio_file', true );

		if ( ! $audio_id ) {
			return '';
		}

		return wp_get_attachment_url( $audio_id ) ?: '';
	}

	/**
	 * Check if track is explicit.
	 *
	 * @return bool
	 */
	public function is_explicit(): bool {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return false;
		}

		return (bool) get_post_meta( $track_id, '_fedistream_explicit', true );
	}

	/**
	 * Get track BPM.
	 *
	 * @return int
	 */
	public function get_bpm(): int {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return 0;
		}

		return (int) get_post_meta( $track_id, '_fedistream_bpm', true );
	}

	/**
	 * Get track musical key.
	 *
	 * @return string
	 */
	public function get_musical_key(): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		return get_post_meta( $track_id, '_fedistream_key', true ) ?: '';
	}

	/**
	 * Get ISRC code.
	 *
	 * @return string
	 */
	public function get_isrc(): string {
		$track_id = $this->get_linked_track_id();

		if ( ! $track_id ) {
			return '';
		}

		return get_post_meta( $track_id, '_fedistream_isrc', true ) ?: '';
	}

	/**
	 * Get downloads for this product.
	 *
	 * Generates downloadable files based on available formats.
	 *
	 * @param string $context View or edit context.
	 * @return array
	 */
	public function get_downloads( $context = 'view' ): array {
		$downloads = parent::get_downloads( $context );

		// If no manual downloads set, generate from linked track.
		if ( empty( $downloads ) && $this->get_linked_track_id() ) {
			$downloads = $this->generate_track_downloads();
		}

		return $downloads;
	}

	/**
	 * Generate download files from linked track.
	 *
	 * @return array
	 */
	private function generate_track_downloads(): array {
		$downloads = array();
		$track     = $this->get_linked_track();
		$formats   = $this->get_available_formats();

		if ( ! $track ) {
			return $downloads;
		}

		// For each format, create a download entry.
		foreach ( $formats as $format ) {
			$format_label = strtoupper( $format );
			$download_id  = 'track-' . $track->ID . '-' . $format;

			$downloads[ $download_id ] = array(
				'id'   => $download_id,
				'name' => sprintf(
					/* translators: 1: Track name, 2: Format name */
					__( '%1$s (%2$s)', 'wp-fedistream' ),
					$track->post_title,
					$format_label
				),
				'file' => add_query_arg(
					array(
						'fedistream_download' => 'track',
						'track_id'            => $track->ID,
						'format'              => $format,
					),
					home_url( '/' )
				),
			);
		}

		return $downloads;
	}

	/**
	 * Check if purchasable.
	 *
	 * @return bool
	 */
	public function is_purchasable(): bool {
		// Must have a linked track.
		if ( ! $this->get_linked_track_id() ) {
			return false;
		}

		// Check price for fixed pricing.
		if ( 'fixed' === $this->get_pricing_type() ) {
			return $this->get_price() !== '' && $this->get_price() >= 0;
		}

		// PWYW and NYP are always purchasable.
		return true;
	}

	/**
	 * Get price HTML.
	 *
	 * @param string $price Price HTML.
	 * @return string
	 */
	public function get_price_html( $price = '' ): string {
		$pricing_type = $this->get_pricing_type();

		if ( 'nyp' === $pricing_type ) {
			return '<span class="fedistream-nyp-price">' . esc_html__( 'Name Your Price', 'wp-fedistream' ) . '</span>';
		}

		if ( 'pwyw' === $pricing_type ) {
			$min_price = $this->get_min_price();
			$suggested = $this->get_suggested_price();

			$html = '<span class="fedistream-pwyw-price">';

			if ( $min_price > 0 ) {
				$html .= sprintf(
					/* translators: %s: Minimum price */
					esc_html__( 'From %s', 'wp-fedistream' ),
					wc_price( $min_price )
				);
			} else {
				$html .= esc_html__( 'Pay What You Want', 'wp-fedistream' );
			}

			if ( $suggested > 0 ) {
				$html .= ' <span class="fedistream-suggested">';
				$html .= sprintf(
					/* translators: %s: Suggested price */
					esc_html__( '(Suggested: %s)', 'wp-fedistream' ),
					wc_price( $suggested )
				);
				$html .= '</span>';
			}

			$html .= '</span>';

			return $html;
		}

		return parent::get_price_html( $price );
	}

	/**
	 * Add to cart validation for PWYW products.
	 *
	 * @param bool $passed     Validation passed.
	 * @param int  $product_id Product ID.
	 * @param int  $quantity   Quantity.
	 * @return bool
	 */
	public static function validate_add_to_cart( bool $passed, int $product_id, int $quantity ): bool {
		$product = wc_get_product( $product_id );

		if ( ! $product || 'fedistream_track' !== $product->get_type() ) {
			return $passed;
		}

		$pricing_type = $product->get_pricing_type();

		if ( 'pwyw' === $pricing_type || 'nyp' === $pricing_type ) {
			$custom_price = isset( $_POST['fedistream_custom_price'] ) ? // phpcs:ignore WordPress.Security.NonceVerification.Missing
				wc_format_decimal( sanitize_text_field( wp_unslash( $_POST['fedistream_custom_price'] ) ) ) : // phpcs:ignore WordPress.Security.NonceVerification.Missing
				0;

			$min_price = $product->get_min_price();

			if ( 'pwyw' === $pricing_type && $custom_price < $min_price ) {
				wc_add_notice(
					sprintf(
						/* translators: %s: Minimum price */
						__( 'Please enter at least %s', 'wp-fedistream' ),
						wc_price( $min_price )
					),
					'error'
				);
				return false;
			}

			WC()->session->set( 'fedistream_custom_price_' . $product_id, $custom_price );
		}

		return $passed;
	}
}