<?php
class agile_tix_data_fetcher {


	static function fetch_agile_data( $feed_type = 'main' ) {
		// agile_tix::agile_tix_log_event("fetch_agile_data called");

		$webURL = get_option( 'agile_field_webURL' );

		// Determine which credentials to use based on feed type
		if ( $feed_type === 'coming_soon' ) {
			// Coming soon feed uses separate credentials
			$useComingSoon = get_option( 'agile_field_use_coming_soon_feed' );
			if ( ! $useComingSoon ) {
				// agile_tix::agile_tix_log_event("Coming Soon Feed API: Feed is not enabled");
				return 'Error: Coming soon feed is not enabled.';
			}

			$epgID   = get_option( 'agile_field_coming_soon_epgID' ); // Optional EPG ID
			$guid    = get_option( 'agile_field_coming_soon_guid' );
			$feedTag = false; // Coming soon feed always uses GUID, not EPG Tag

			// agile_tix::agile_tix_log_event("Coming Soon Feed API: GUID = " . ($guid ?: 'NOT SET') . ", EPG ID = " . ($epgID ?: 'NOT SET'));

			if ( $guid == false || $guid == '' || is_null( $guid ) ) {
				agile_tix::agile_tix_log_event( 'Coming Soon Feed API: ERROR - Invalid coming soon guid' );
				return 'Error: Invalid coming soon guid.';
			}
		} else {
			// Main feed uses standard credentials
			$guid    = get_option( 'agile_field_guid' );
			$feedTag = get_option( 'agile_field_epgTag' ) ?? false;

			if ( $feedTag == '' || $feedTag == false || is_null( $feedTag ) ) {
				// if we're not using a feed tag, we need a guid
				if ( $guid == false ) {
					return 'Error: Invalid guid.';
				}
			}
		}

		if ( $webURL == false ) {
			return 'Error: Invalid webURL.';
		}

		// temp workaround constant
		// $url = "https://qa.agiletix.com/websales/feed.ashx?guid=" . urlencode($guid) . "&format=json&v=latest&showsList=true&CPdata=true&fullDescription=true&withmedia=true";

		$universalTags = '&format=json&v=latest&showsList=true&CPdata=true&fullDescription=true&withmedia=true';

		$guidString    = '';
		$feedTagString = '';
		if ( $guid != '' ) {
			$guidString = 'guid=' . $guid;
		} elseif ( $feedTag != '' ) {
			$feedTagString = 'epgtag=' . $feedTag;
		}

		// agile_tix::agile_tix_log_event("fetch_agile_data url formation error guid: " . $guid . " feedTagString: " . $feedTagString);

		$url = '';

		if ( $guidString != '' ) {
			$url = $webURL . 'feed.ashx?' . $guidString;
			// Add epgID parameter if provided (for coming soon feed)
			if ( $feed_type === 'coming_soon' && isset( $epgID ) && $epgID != '' && $epgID != false ) {
				$url .= '&epgID=' . urlencode( $epgID );
				// agile_tix::agile_tix_log_event("Coming Soon Feed API: Added epgID parameter = " . $epgID);
			}
			$url .= $universalTags;
		} elseif ( $feedTagString != '' ) {
			$url = $webURL . 'feed.ashx?' . $feedTagString . $universalTags;
		} else {
			// agile_tix::agile_tix_log_event("fetch_agile_data url formation error guidString: " . $guidString . " feedTagString: " . $feedTagString);

			return 'Error: Invalid guid.';
		}

		// if ($feed_type === 'coming_soon') {
		// agile_tix::agile_tix_log_event("Coming Soon Feed API: Requesting URL = " . $url);
		// }
		// agile_tix::agile_tix_log_event("fetch_agile_data url: " . ($url));
		$response = wp_remote_get( $url );

		// agile_tix::agile_tix_log_event("fetch_agile_data response: " . json_encode($response));

		if ( is_wp_error( $response ) ) {
			$error_message = $response->get_error_message();
			agile_tix::agile_tix_log_event( "fetch_agile_data Error: $error_message" );
			return 'Error: ' . $error_message;
		}

		$http_code = wp_remote_retrieve_response_code( $response );
		if ( $http_code !== 200 ) {
			$error_body = wp_remote_retrieve_body( $response );
			agile_tix::agile_tix_log_event( "fetch_agile_data Error: API request failed with status code $http_code. URL: $url" );
			if ( $feed_type === 'coming_soon' ) {
				agile_tix::agile_tix_log_event( 'Coming Soon Feed API: Error response body = ' . substr( $error_body, 0, 500 ) );
			}
			return "Error: API request failed with status code $http_code.";
		}

		$body = wp_remote_retrieve_body( $response );
		if ( empty( $body ) ) {
			agile_tix::agile_tix_log_event( 'fetch_agile_data Error: Received an empty response from the API.' );
			return 'Error: Received an empty response from the API.';
		}

		$data = json_decode( $body, true );
		if ( json_last_error() !== JSON_ERROR_NONE ) {
			// agile_tix::agile_tix_log_event("JSON Decode Error: " . $json_error);
			agile_tix::agile_tix_log_event( 'fetch_agile_data Error: Failed to decode API response.' );
			return 'Error: Failed to decode API response.';
		}
		agile_tix_Admin::agile_cache_api_transient( $data );

		return $data;
	}
}