namespace GermanApp.Shared.Models;

/// <summary>
/// Base API response wrapper for consistent API responses.
/// </summary>
/// <typeparam name="T">The data type of the response</typeparam>
public record ApiResponse<T>(T Data, string Message = "Success", bool Success = true)
{
    /// <summary>
    /// Creates a successful response.
    /// </summary>
    public static ApiResponse<T> Ok(T data, string message = "Success") =>
        new ApiResponse<T>(data, message, true);
}

/// <summary>
/// API error response for consistent error handling.
/// </summary>
public record ApiErrorResponse(string Message, int StatusCode, string? Details = null)
{
    public bool Success => false;

    /// <summary>
    /// Creates an error response.
    /// </summary>
    public static ApiErrorResponse Error(string message, int statusCode, string? details = null) =>
        new ApiErrorResponse(message, statusCode, details);
}

/// <summary>
/// Paginated API response.
/// </summary>
/// <typeparam name="T">The data type of the items</typeparam>
public record PaginatedResponse<T>(IEnumerable<T> Items, int PageNumber, int PageSize, int TotalCount, int TotalPages)
{
    /// <summary>
    /// Creates a paginated response.
    /// </summary>
    public static PaginatedResponse<T> Create(IEnumerable<T> items, int pageNumber, int pageSize, int totalCount) =>
        new PaginatedResponse<T>(
            items,
            pageNumber,
            pageSize,
            totalCount,
            (int)Math.Ceiling(totalCount / (double)pageSize)
        );
}