package com.ftptool.sync.service;

import com.ftptool.sync.model.PackageManifest;
import com.ftptool.sync.model.SyncDirection;
import org.springframework.stereotype.Service;

import java.time.OffsetDateTime;
import java.util.UUID;

@Service
public class SyncMetadataService {

    public String newTraceId() {
        return UUID.randomUUID().toString().replace("-", "");
    }

    public PackageManifest createManifest(
            String traceId,
            SyncDirection direction,
            String sourceEnv,
            String sourceVersion,
            String contentHash
    ) {
        PackageManifest manifest = new PackageManifest();
        manifest.setTraceId(traceId);
        manifest.setDirection(direction);
        manifest.setSourceEnv(sourceEnv);
        manifest.setSourceVersion(sourceVersion);
        manifest.setContentHash(contentHash);
        manifest.setCreatedAt(OffsetDateTime.now().toString());
        manifest.setPackageName(buildPackageFileName(direction, sourceVersion, traceId));
        return manifest;
    }

    public String buildPackageFileName(SyncDirection direction, String sourceVersion, String traceId) {
        return direction.name().toLowerCase() + "-" + sanitize(sourceVersion) + "-" + sanitize(traceId) + ".zip";
    }

    private String sanitize(String value) {
        if (value == null || value.trim().isEmpty()) {
            return "unknown";
        }
        return value.replaceAll("[^a-zA-Z0-9._-]", "_");
    }
}