using System;
using System.Collections.Generic;
using System.Text.Json.Nodes;

namespace DysonNetwork.Common.Models;

/// <summary>
/// Represents user information from an OIDC provider
/// </summary>
public class OidcUserInfo
{
    /// <summary>
    /// The unique identifier for the user from the OIDC provider
    /// </summary>
    public string? UserId { get; set; }

    /// <summary>
    /// The user's email address
    /// </summary>
    public string? Email { get; set; }

    /// <summary>
    /// Whether the user's email has been verified by the OIDC provider
    /// </summary>
    public bool EmailVerified { get; set; }

    /// <summary>
    /// The user's given name (first name)
    /// </summary>
    public string? GivenName { get; set; }

    /// <summary>
    /// The user's family name (last name)
    /// </summary>
    public string? FamilyName { get; set; }

    /// <summary>
    /// The user's full name
    /// </summary>
    public string? Name { get; set; }

    /// <summary>
    /// The user's preferred username
    /// </summary>
    public string? PreferredUsername { get; set; }

    /// <summary>
    /// URL to the user's profile picture
    /// </summary>
    public string? Picture { get; set; }

    /// <summary>
    /// The OIDC provider name (e.g., "google", "github")
    /// </summary>
    public string? Provider { get; set; }

    /// <summary>
    /// OAuth access token from the provider
    /// </summary>
    public string? AccessToken { get; set; }

    /// <summary>
    /// OAuth refresh token from the provider (if available)
    /// </summary>
    public string? RefreshToken { get; set; }

    /// <summary>
    /// When the access token expires (if available)
    /// </summary>
    public DateTimeOffset? ExpiresAt { get; set; }

    /// <summary>
    /// Additional claims from the ID token or user info endpoint
    /// </summary>
    public Dictionary<string, object>? Claims { get; set; }

    /// <summary>
    /// Converts the user info to a metadata dictionary for storage
    /// </summary>
    public Dictionary<string, object> ToMetadata()
    {
        var metadata = new Dictionary<string, object>();

        if (!string.IsNullOrWhiteSpace(UserId))
            metadata["user_id"] = UserId;

        if (!string.IsNullOrWhiteSpace(Email))
            metadata["email"] = Email;

        metadata["email_verified"] = EmailVerified;

        if (!string.IsNullOrWhiteSpace(GivenName))
            metadata["given_name"] = GivenName;

        if (!string.IsNullOrWhiteSpace(FamilyName))
            metadata["family_name"] = FamilyName;

        if (!string.IsNullOrWhiteSpace(Name))
            metadata["name"] = Name;

        if (!string.IsNullOrWhiteSpace(PreferredUsername))
            metadata["preferred_username"] = PreferredUsername;

        if (!string.IsNullOrWhiteSpace(Picture))
            metadata["picture"] = Picture;

        if (!string.IsNullOrWhiteSpace(Provider))
            metadata["provider"] = Provider;

        if (ExpiresAt.HasValue)
            metadata["expires_at"] = ExpiresAt.Value;

        return metadata;
    }
}