namespace PostFundManagement.Application.Extensions;

public static class General
{
    public static string Clean(this string input) => Patterns.SpaceRegex().Replace(input, string.Empty);

    public static string ToJson<TValue>(this TValue obj) where TValue : class => JsonSerializer.Serialize(obj);

    public static TValue FromJson<TValue>(this string json) where TValue : class => JsonSerializer.Deserialize<TValue>(json)!;

    public static Guid GetUserId(this HttpContext context) => (Guid)context.Items[Domain.Extensions.Constants.UserIdItemKey]!;

    public static string GetUserEmail(this HttpContext context) => (string)context.Items[Domain.Extensions.Constants.EmailtemKey]!;

    public static string GetUserRole(this HttpContext context) => (string)context.Items[Domain.Extensions.Constants.UserRoleItemKey]!;

    public static (bool Decoded, Guid userId) GetUserId(this ClaimsPrincipal principal)
    {
        var subClaim = principal.FindFirst(JwtRegisteredClaimNames.Sub)?.Value 
            ?? principal.FindFirst(ClaimTypes.NameIdentifier)?.Value;

        var decoded = Guid.TryParse(subClaim, out var userId);

        return (decoded, userId);
    }

    public static (bool Decoded, string email) GetUserEmail(this ClaimsPrincipal principal)
    {
        var emailClaim = principal.FindFirst("email")?.Value 
            ?? principal.FindFirst(ClaimTypes.Email)?.Value
            ?? principal.FindFirst("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress")?.Value
            ?? principal.FindFirst("preferred_username")?.Value
            ?? principal.FindFirst("name")?.Value
            ?? principal.FindFirst(ClaimTypes.Name)?.Value;

        var decoded = !string.IsNullOrWhiteSpace(emailClaim);

        return (decoded, emailClaim ?? string.Empty);
    }

    public static (bool Decoded, string role) GetUserRole(this ClaimsPrincipal principal)
    {
        var roleClaims = principal.FindAll("role")
            .Concat(principal.FindAll(ClaimTypes.Role))
            .Concat(principal.FindAll("http://schemas.microsoft.com/ws/2008/06/identity/claims/role"))
            .Concat(principal.FindAll("roles"))
            .Select(c => c.Value)
            .Where(v => !string.IsNullOrWhiteSpace(v))
            .ToList();

        var partnerRole = roleClaims.FirstOrDefault(r => r.Equals("Partner", StringComparison.OrdinalIgnoreCase));
        var role = partnerRole ?? roleClaims.FirstOrDefault();

        var decoded = !string.IsNullOrWhiteSpace(role);

        return (decoded, role ?? string.Empty);
    }

    public static Microsoft.AspNetCore.Mvc.ProblemDetails ToProblems(this IReadOnlyList<IError> errors, int statusCode = StatusCodes.Status400BadRequest) => new()
    {
        Detail = string.Join(',', errors.Select(e => e.Message)),
        Status = statusCode,
        Title = "Error",
    };
}