using ModVersionChecker.enums;
using ModVersionChecker.managers.interfaces;
using ModVersionChecker.model;
using ModVersionChecker.service.interfaces;
using ModVersionChecker.utils;
using NuGet.Versioning;

namespace ModVersionChecker.service
{
    public class VersionService: IVersionService
    {
        private readonly Config _globalConfig;

        public VersionService(
            IConfigRepository configManager
        ) {
            _globalConfig = configManager.Load() ?? new Config();
        }

        public string GetCurrentVersion(App app)
        {
            var typeConfig = _globalConfig.Types.FirstOrDefault(t => t.ShortName == app.Type);
            if (typeConfig == null)
            {
                throw new InvalidOperationException($"No type config found for app type: {app.Type}");
            }
            return VersionUtils.GetCurrentVersion(app, typeConfig);
        }

        public bool IsUpdateAvailable(string currentVersion, string latestVersion)
        {
            try
            {
                var current = NuGetVersion.Parse(currentVersion);
                var latest = NuGetVersion.Parse(latestVersion);
                return latest.CompareTo(current) == 1;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Failed to compare versions: {ex.Message}");
                return false;
            }
        }
    }
}