using System.Text.RegularExpressions;

namespace sh.actions.package_cleanup.Models;

public class SoftwareVersion(
    int major,
    int minor,
    int patch = 0,
    int build = 0,
    string? suffix = null,
    string? input = null,
    bool isLatest = false)
{
    public int Major { get; set; } = major;
    public int Minor { get; set; } = minor;
    public int Patch { get; set; } = patch;
    public int Build { get; set; } = build;
    public string? Suffix { get; set; } = suffix;
    public string? Input { get; set; } = input;
    public bool IsLatest { get; set; } = isLatest;

    public override string ToString()
    {
        var versionStr = $"{Major}.{Minor}.{Patch}.{Build}";
        if (!string.IsNullOrEmpty(Suffix))
        {
            versionStr += $"-{Suffix}";
        }

        return versionStr;
    }

    public override bool Equals(object? obj)
    {
        return obj is SoftwareVersion version && ToString() == version.ToString();
    }

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

    public static SoftwareVersion Parse(string versionString)
    {
        // Try matching format: X.X.X.X or X.X.X.X-suffix
        var match = Regex.Match(versionString, @"(\d+)\.(\d+)\.(\d+)\.(\d+)(?:-(.*))?");
        if (match.Success)
        {
            var major = int.Parse(match.Groups[1].Value);
            var minor = int.Parse(match.Groups[2].Value);
            var patch = int.Parse(match.Groups[3].Value);
            var build = int.Parse(match.Groups[4].Value);
            var suffix = match.Groups[5].Value;
            return new SoftwareVersion(major, minor, patch, build, string.IsNullOrEmpty(suffix) ? null : suffix,
                versionString);
        }

        // Try matching format: X.X.X or X.X.X-suffix
        match = Regex.Match(versionString, @"(\d+)\.(\d+)\.(\d+)(?:-(.*))?");
        if (match.Success)
        {
            var major = int.Parse(match.Groups[1].Value);
            var minor = int.Parse(match.Groups[2].Value);
            var patch = int.Parse(match.Groups[3].Value);
            var suffix = match.Groups[4].Value;
            return new SoftwareVersion(major, minor, patch, 0, string.IsNullOrEmpty(suffix) ? null : suffix,
                versionString);
        }

        // Try matching format: X.X or X.X-suffix
        match = Regex.Match(versionString, @"(\d+)\.(\d+)(?:-(.*))?");
        if (match.Success)
        {
            var major = int.Parse(match.Groups[1].Value);
            var minor = int.Parse(match.Groups[2].Value);
            var suffix = match.Groups[3].Value;
            return new SoftwareVersion(major, minor, 0, 0, string.IsNullOrEmpty(suffix) ? null : suffix, versionString);
        }

        // Try matching format: X or X-suffix
        match = Regex.Match(versionString, @"(\d+)(?:-(.*))?");
        if (match.Success)
        {
            var major = int.Parse(match.Groups[1].Value);
            var suffix = match.Groups[2].Value;
            return new SoftwareVersion(major, 0, 0, 0, string.IsNullOrEmpty(suffix) ? null : suffix, versionString);
        }

        // Special case for "latest"
        if (versionString == "latest")
        {
            return new SoftwareVersion(1, 0, 0, 0, null, versionString, isLatest: true);
        }

        throw new ArgumentException($"Invalid version string: {versionString}");
    }
}