using Microsoft.VisualBasic.CompilerServices;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

namespace ModpackUpdater.Model;

public class ModpackInfo
{
    private const string FILENAME_MODPACKINFO = "modpack-info.json";

    [JsonConverter(typeof(VersionConverter))]
    public Version Version { get; set; }
    public string ConfigUrl { get; set; }
    public string ExtrasKey { get; set; }

    [JsonIgnore]
    public string LocaLPath { get; private set; }
    [JsonIgnore]
    public bool Exists => File.Exists(GetFilePath(LocaLPath));

    public void Save()
    {
        File.WriteAllText(Conversions.ToString(GetFilePath(LocaLPath)), JsonConvert.SerializeObject(this));
    }

    public void Save(string mcRoot)
    {
        LocaLPath = mcRoot;
        Save();
    }

    public static ModpackInfo TryLoad(string mcRoot)
    {
        if (HasModpackInfo(mcRoot))
            return Load(mcRoot);
        return new()
        {
            LocaLPath = mcRoot
        };
    }

    public static ModpackInfo Load(string mcRoot)
    {
        var info = JsonConvert.DeserializeObject<ModpackInfo>(File.ReadAllText(GetFilePath(mcRoot)));
        info.LocaLPath = mcRoot;
        return info;
    }

    public static bool HasModpackInfo(string mcRoot)
    {
        return File.Exists(Conversions.ToString(GetFilePath(mcRoot)));
    }

    private static string GetFilePath(string mcRoot)
    {
        return Path.Combine(mcRoot, FILENAME_MODPACKINFO);
    }
}