namespace Aeshnidae.OverworldCopies;

/// <summary>Settings.json beside the dll.</summary>
public class Settings
{
    public const string FileName = "Settings.json";

    /// <summary>
    /// The switch. /overworld on and /overworld off flip it and write it back here, so
    /// it survives a restart. Off: no bubble exists, /overworld enter refuses, and every
    /// patch passes straight through to ACE and InstancesNoDat.
    /// </summary>
    public bool Enabled { get; set; } = false;

    /// <summary>
    /// Lowest access level for /overworld enter, join and leave: 0 Player ... 5 Admin.
    /// The switch itself, list and close are always Admin.
    /// </summary>
    public int EnterAccessLevel { get; set; } = 0;

    /// <summary>
    /// Housing is left out of every bubble: a house, its slumlord, storage, hooks and
    /// portal exist once, with one owner and contents saved against their guid, so a
    /// second copy of them would be a second copy of someone's house. By WeenieType name.
    /// </summary>
    public List<string> LeftOutTypes { get; set; } = ["House", "SlumLord", "Storage", "Hook", "HousePortal", "BootSpot", "Deed", "AllegianceBindstone"];

    /// <summary>Log each enter, exit and edge crossing.</summary>
    public bool Trace { get; set; } = true;

    /// <summary>
    /// Where /overworld send puts players in a region: region name -> "0xCELL x y z qw qz".
    /// The Aerlinthe ones are the retail Aerlinthe Island Portal's landing (7413), on the
    /// south shore in BAE8. The region itself (its landblocks, solo or group, variants) is
    /// InstancesNoDat's Outdoor entry.
    /// </summary>
    public Dictionary<string, string> Landings { get; set; } = new(StringComparer.OrdinalIgnoreCase)
    {
        ["aerlinthe-south"] = "0xBAE8001D 84 105 26 0 -1",
        ["aerlinthe"] = "0xBAE8001D 84 105 26 0 -1",
    };

    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        WriteIndented = true,
        ReadCommentHandling = JsonCommentHandling.Skip,
        AllowTrailingCommas = true,
        PropertyNameCaseInsensitive = true,
    };

    public static Settings Load(string modPath)
    {
        var path = Path.Combine(modPath, FileName);
        try
        {
            if (File.Exists(path))
                return JsonSerializer.Deserialize<Settings>(File.ReadAllText(path), JsonOptions) ?? new Settings();
            var defaults = new Settings();
            defaults.Save(modPath);
            return defaults;
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] could not read {path}, using defaults (switched off): {ex.Message}", ModManager.LogLevel.Warn);
            return new Settings();
        }
    }

    public void Save(string modPath)
    {
        var path = Path.Combine(modPath, FileName);
        try
        {
            var tmp = path + ".tmp";
            File.WriteAllText(tmp, JsonSerializer.Serialize(this, JsonOptions));
            File.Move(tmp, path, true);
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] could not write {path}: {ex.Message}", ModManager.LogLevel.Warn);
        }
    }
}