using System;
using System.Collections.Generic;

namespace Haoliang.Models.Common
{
    /// <summary>
    /// 非泛型API响应基类
    /// </summary>
    public class ApiResponse
    {
        public bool Success { get; set; }
        public object? Data { get; set; }
        public string? Message { get; set; }
        public int ErrorCode { get; set; }
        public DateTime Timestamp { get; set; }
        public string? RequestId { get; set; }
        public Dictionary<string, object>? Meta { get; set; }

        /// <summary>
        /// 创建成功响应
        /// </summary>
        public static ApiResponse Ok(object? data = null, string? message = null)
        {
            return new ApiResponse
            {
                Success = true,
                Data = data,
                Message = message ?? "Success",
                ErrorCode = 200,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建错误响应
        /// </summary>
        public static ApiResponse Error(string? message, int errorCode = 500)
        {
            return new ApiResponse
            {
                Success = false,
                Message = message ?? "Error",
                ErrorCode = errorCode,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建错误响应（带错误详情列表）
        /// </summary>
        public static ApiResponse Error(string? message, IEnumerable<string>? errors, int errorCode = 500)
        {
            return new ApiResponse
            {
                Success = false,
                Message = message ?? "Error",
                ErrorCode = errorCode,
                Data = errors?.ToList(),
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建未找到响应
        /// </summary>
        public static ApiResponse NotFound(string? message = null)
        {
            return new ApiResponse
            {
                Success = false,
                Message = message ?? "Not Found",
                ErrorCode = 404,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建内部服务器错误响应
        /// </summary>
        public static ApiResponse InternalServerError(string? message = null)
        {
            return new ApiResponse
            {
                Success = false,
                Message = message ?? "Internal Server Error",
                ErrorCode = 500,
                Timestamp = DateTime.Now
            };
        }
    }

    /// <summary>
    /// 泛型API响应类
    /// </summary>
    public class ApiResponse<T> : ApiResponse
    {
        public new T? Data { get; set; }

        /// <summary>
        /// 创建成功响应
        /// </summary>
        public static ApiResponse<T> Ok(T? data = default, string? message = null)
        {
            return new ApiResponse<T>
            {
                Success = true,
                Data = data,
                Message = message ?? "Success",
                ErrorCode = 200,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建错误响应
        /// </summary>
        public static ApiResponse<T> ErrorResult(string? message, int errorCode = 500)
        {
            return new ApiResponse<T>
            {
                Success = false,
                Message = message ?? "Error",
                ErrorCode = errorCode,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建未找到响应
        /// </summary>
        public static ApiResponse<T> NotFoundResult(string? message = null)
        {
            return new ApiResponse<T>
            {
                Success = false,
                Message = message ?? "Not Found",
                ErrorCode = 404,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建内部服务器错误响应
        /// </summary>
        public static ApiResponse<T> InternalServerErrorResult(string? message = null)
        {
            return new ApiResponse<T>
            {
                Success = false,
                Message = message ?? "Internal Server Error",
                ErrorCode = 500,
                Timestamp = DateTime.Now
            };
        }

        /// <summary>
        /// 创建.bad request响应
        /// </summary>
        public static ApiResponse<T> BadRequestResult(string? message = null)
        {
            return new ApiResponse<T>
            {
                Success = false,
                Message = message ?? "Bad Request",
                ErrorCode = 400,
                Timestamp = DateTime.Now
            };
        }
    }

    /// <summary>
    /// 分页响应类
    /// </summary>
    public class PaginatedResponse<T>
    {
        public List<T> Items { get; set; } = new List<T>();
        public int TotalCount { get; set; }
        public int PageNumber { get; set; }
        public int PageSize { get; set; }
        public int TotalPages { get; set; }
        public bool HasPreviousPage { get; set; }
        public bool HasNextPage { get; set; }
        public ApiResponse<T> Response { get; set; } = new ApiResponse<T>();
    }

    /// <summary>
    /// 自定义验证结果（避免与System.ComponentModel.DataAnnotations.ValidationResult冲突）
    /// </summary>
    public class ModelValidationResult
    {
        public bool IsValid { get; set; }
        public List<ValidationError> Errors { get; set; } = new List<ValidationError>();
    }

    /// <summary>
    /// 验证错误
    /// </summary>
    public class ValidationError
    {
        public string? Field { get; set; }
        public string? Message { get; set; }
        public string? Code { get; set; }
    }

    /// <summary>
    /// 下拉选项
    /// </summary>
    public class SelectOption
    {
        public string? Value { get; set; }
        public string? Label { get; set; }
        public bool Disabled { get; set; }
        public string? Group { get; set; }
    }

    /// <summary>
    /// 树节点
    /// </summary>
    public class TreeNode
    {
        public string? Id { get; set; }
        public string? Text { get; set; }
        public string? Type { get; set; }
        public List<TreeNode> Children { get; set; } = new List<TreeNode>();
        public Dictionary<string, object>? Data { get; set; }
        public bool Expanded { get; set; }
        public bool Selected { get; set; }
        public bool HasChildren { get; set; }
    }

    /// <summary>
    /// 图表数据
    /// </summary>
    public class ChartData
    {
        public string? Type { get; set; }
        public string? Title { get; set; }
        public List<string> Labels { get; set; } = new List<string>();
        public List<Dataset> Datasets { get; set; } = new List<Dataset>();
        public Dictionary<string, object>? Options { get; set; }
    }

    /// <summary>
    /// 数据集
    /// </summary>
    public class Dataset
    {
        public string? Label { get; set; }
        public List<decimal> Data { get; set; } = new List<decimal>();
        public string? BackgroundColor { get; set; }
        public string? BorderColor { get; set; }
        public decimal BorderWidth { get; set; }
        public string? BorderDash { get; set; }
        public bool Fill { get; set; }
        public string? Tension { get; set; }
    }

    /// <summary>
    /// 仪表盘组件
    /// </summary>
    public class DashboardWidget
    {
        public string? Id { get; set; }
        public string? Title { get; set; }
        public string? Type { get; set; }
        public string? Size { get; set; }
        public int Row { get; set; }
        public int Col { get; set; }
        public Dictionary<string, object>? Config { get; set; }
        public bool Refreshable { get; set; }
        public int RefreshInterval { get; set; }
        public bool Visible { get; set; }
    }

    /// <summary>
    /// 过滤条件
    /// </summary>
    public class FilterCondition
    {
        public string? Field { get; set; }
        public string? Operator { get; set; }
        public object? Value { get; set; }
        public string? Logic { get; set; }
    }
}