namespace StabilityMatrix.Core.Models.FileInterfaces;

public class FileSystemPath : IEquatable<FileSystemPath>, IEquatable<string>, IFormattable
{
    public string FullPath { get; }

    protected FileSystemPath(string path)
    {
        FullPath = path;
    }

    protected FileSystemPath(FileSystemPath path)
        : this(path.FullPath) { }

    protected FileSystemPath(params string[] paths)
        : this(Path.Combine(paths)) { }

    public override string ToString()
    {
        return FullPath;
    }

    /// <inheritdoc />
    string IFormattable.ToString(string? format, IFormatProvider? formatProvider)
    {
        return ToString(format, formatProvider);
    }

    /// <summary>
    /// Overridable IFormattable.ToString method.
    /// By default, returns <see cref="FullPath"/>.
    /// </summary>
    protected virtual string ToString(string? format, IFormatProvider? formatProvider)
    {
        return FullPath;
    }

    public bool Equals(FileSystemPath? other)
    {
        if (ReferenceEquals(null, other))
            return false;
        if (ReferenceEquals(this, other))
            return true;
        return FullPath == other.FullPath;
    }

    public bool Equals(string? other)
    {
        return string.Equals(FullPath, other);
    }

    public override bool Equals(object? obj)
    {
        return obj switch
        {
            FileSystemPath path => Equals(path),
            string path => Equals(path),
            _ => false
        };
    }

    public override int GetHashCode()
    {
        return FullPath.GetHashCode();
    }

    // Implicit conversions to and from string
    public static implicit operator string(FileSystemPath path) => path.FullPath;

    public static implicit operator FileSystemPath(string path) => new(path);
}