using System.Text.Json;
using JdeScoping.Core.Models.Auth;
using Microsoft.JSInterop;

namespace JdeScoping.Client.Auth;

/// <summary>
/// Stores user info in browser sessionStorage via JS interop.
/// Uses sessionStorage (not localStorage) so it clears on browser close,
/// matching cookie session behavior.
/// </summary>
public class UserStorageService : IUserStorageService
{
    private const string UserKey = "jdescoping_user";
    private readonly IJSRuntime _jsRuntime;

    public UserStorageService(IJSRuntime jsRuntime)
    {
        _jsRuntime = jsRuntime;
    }

    public async Task<UserInfoDto?> GetUserAsync()
    {
        try
        {
            var json = await _jsRuntime.InvokeAsync<string?>("jdeScopingInterop.getSessionStorage", UserKey);
            if (string.IsNullOrEmpty(json))
            {
                return null;
            }

            return JsonSerializer.Deserialize<UserInfoDto>(json, new JsonSerializerOptions
            {
                PropertyNameCaseInsensitive = true
            });
        }
        catch
        {
            return null;
        }
    }

    public async Task SetUserAsync(UserInfoDto user)
    {
        var json = JsonSerializer.Serialize(user);
        await _jsRuntime.InvokeVoidAsync("jdeScopingInterop.setSessionStorage", UserKey, json);
    }

    public async Task RemoveUserAsync()
    {
        await _jsRuntime.InvokeVoidAsync("jdeScopingInterop.removeSessionStorage", UserKey);
    }
}