using System.ComponentModel.DataAnnotations;
using YD_Event.Core.Enum;

namespace YD_Event.Application.Event.Dtos;

/// <summary>
/// 统一报名输入DTO
/// </summary>
public class UnifiedRegistrationInput
{
    /// <summary>
    /// 赛事ID
    /// </summary>
    [Required(ErrorMessage = "赛事ID不能为空")]
    public long EventId { get; set; }

    /// <summary>
    /// 报名模式 (1-个人 2-团队)
    /// </summary>
    [Required(ErrorMessage = "报名模式不能为空")]
    [Range(1, 2, ErrorMessage = "报名模式只能是1（个人）或2（团队）")]
    public int RegistrationMode { get; set; }

    /// <summary>
    /// 团队名称 (团队报名必填)
    /// </summary>
    [MaxLength(100, ErrorMessage = "团队名称不能超过100个字符")]
    public string? TeamName { get; set; }

    /// <summary>
    /// 联系人姓名
    /// </summary>
    [Required(ErrorMessage = "联系人姓名不能为空")]
    [MaxLength(50, ErrorMessage = "联系人姓名不能超过50个字符")]
    public string ContactName { get; set; } = string.Empty;

    /// <summary>
    /// 联系人电话
    /// </summary>
    [Required(ErrorMessage = "联系人电话不能为空")]
    [RegularExpression(@"^1[3-9]\d{9}$", ErrorMessage = "请输入正确的手机号格式")]
    public string ContactPhone { get; set; } = string.Empty;

    /// <summary>
    /// 报名项目列表
    /// </summary>
    [Required(ErrorMessage = "报名项目列表不能为空")]
    [MinLength(1, ErrorMessage = "请至少选择一个项目")]
    public List<UnifiedRegistrationItemInput> Items { get; set; } = new();

    /// <summary>
    /// 创建用户ID
    /// </summary>
    public long CreatedUserId { get; set; }

    /// <summary>
    /// 是否为草稿
    /// </summary>
    public bool IsDraft { get; set; }

    /// <summary>
    /// 报名渠道 (1-小程序 2-后台管理 3-其他)
    /// </summary>
    public int RegistrationChannel { get; set; } = 1;
}

/// <summary>
/// 统一报名项目输入DTO
/// </summary>
public class UnifiedRegistrationItemInput
{
    /// <summary>
    /// 项目ID
    /// </summary>
    [Required(ErrorMessage = "项目ID不能为空")]
    public long ProjectId { get; set; }

    /// <summary>
    /// 组别ID
    /// </summary>
    public long? GroupId { get; set; }

    /// <summary>
    /// 组别名称
    /// </summary>
    public string? GroupName { get; set; }

    /// <summary>
    /// 团队列表（支持多个团队报名同一项目组别）
    /// </summary>
    public List<UnifiedTeamInput> Teams { get; set; } = new();

    /// <summary>
    /// 参赛人员列表（单个团队报名时使用，向后兼容）
    /// </summary>
    public List<UnifiedPersonInput> Persons { get; set; } = new();
}

/// <summary>
/// 统一团队输入DTO
/// </summary>
public class UnifiedTeamInput
{
    /// <summary>
    /// 团队ID（可选，已有团队时使用）
    /// </summary>
    public long? TeamId { get; set; }

    /// <summary>
    /// 团队名称
    /// </summary>
    [MaxLength(100, ErrorMessage = "团队名称不能超过100个字符")]
    public string? TeamName { get; set; }

    /// <summary>
    /// 团队序号（用于显示，如"团队一"、"团队二"）
    /// </summary>
    public int TeamIndex { get; set; }

    /// <summary>
    /// 该团队的参赛人员列表
    /// </summary>
    [Required(ErrorMessage = "参赛人员列表不能为空")]
    [MinLength(1, ErrorMessage = "请至少填写一个参赛人员")]
    public List<UnifiedPersonInput> Persons { get; set; } = new();
}

/// <summary>
/// 统一参赛人员输入DTO
/// </summary>
public class UnifiedPersonInput
{
    /// <summary>
    /// 用户ID (可选，已有用户时使用)
    /// </summary>
    public long? UserId { get; set; }

    /// <summary>
    /// 姓名
    /// </summary>
    [Required(ErrorMessage = "姓名不能为空")]
    [MaxLength(50, ErrorMessage = "姓名不能超过50个字符")]
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// 身份证号
    /// </summary>
    [Required(ErrorMessage = "身份证号不能为空")]
    [RegularExpression(@"^[1-9]\d{5}(19|20)\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])\d{3}[\dXx]$", ErrorMessage = "请输入正确的身份证号格式")]
    public string IdCardNumber { get; set; } = string.Empty;

    /// <summary>
    /// 性别
    /// </summary>
    [Required(ErrorMessage = "性别不能为空")]
    public Gender Gender { get; set; }

    /// <summary>
    /// 电话
    /// </summary>
    [RegularExpression(@"^1[3-9]\d{9}$", ErrorMessage = "请输入正确的手机号格式")]
    public string? Mobile { get; set; }

    /// <summary>
    /// 出生日期
    /// </summary>
    [Required(ErrorMessage = "出生日期不能为空")]
    public DateTime BirthDate { get; set; }
}

/// <summary>
/// 统一报名结果输出DTO
/// </summary>
public class UnifiedRegistrationOutput
{
    /// <summary>
    /// 报名ID
    /// </summary>
    public long RegistrationId { get; set; }

    /// <summary>
    /// 订单号
    /// </summary>
    public string OrderNo { get; set; } = string.Empty;

    /// <summary>
    /// 总金额（优惠前）
    /// </summary>
    public decimal OriginalAmount { get; set; }

    /// <summary>
    /// 优惠金额
    /// </summary>
    public decimal DiscountAmount { get; set; }

    /// <summary>
    /// 实际支付金额
    /// </summary>
    public decimal ActualAmount { get; set; }

    /// <summary>
    /// 支付状态
    /// </summary>
    public int PaymentStatus { get; set; }

    /// <summary>
    /// 是否免费
    /// </summary>
    public bool IsFree => ActualAmount <= 0;
}

/// <summary>
/// 统一支付处理输入DTO
/// </summary>
public class UnifiedPaymentInput
{
    /// <summary>
    /// 报名ID
    /// </summary>
    [Required(ErrorMessage = "报名ID不能为空")]
    public long RegistrationId { get; set; }

    /// <summary>
    /// 支付方式 (1-线下 2-线上)
    /// </summary>
    [Required(ErrorMessage = "支付方式不能为空")]
    [Range(1, 2, ErrorMessage = "支付方式只能是1（线下）或2（线上）")]
    public int PaymentMethod { get; set; }

    /// <summary>
    /// 优惠券ID (可选)
    /// </summary>
    public long? CouponId { get; set; }

    /// <summary>
    /// 微信OpenId (微信支付时必填)
    /// </summary>
    public string? OpenId { get; set; }

    /// <summary>
    /// 支付凭证URL (线下支付时必填)
    /// </summary>
    public string? PaymentProofUrl { get; set; }

    /// <summary>
    /// 具体支付方式
    /// </summary>
    public PaymentMethodType PaymentMethodType { get; set; }

    /// <summary>
    /// 操作用户ID
    /// </summary>
    public long OperatorUserId { get; set; }
}

/// <summary>
/// 统一支付处理输出DTO
/// </summary>
public class UnifiedPaymentOutput
{
    /// <summary>
    /// 报名ID
    /// </summary>
    public long RegistrationId { get; set; }

    /// <summary>
    /// 订单号
    /// </summary>
    public string OrderNo { get; set; } = string.Empty;

    /// <summary>
    /// 支付状态
    /// </summary>
    public int PaymentStatus { get; set; }

    /// <summary>
    /// 是否免费
    /// </summary>
    public bool IsFree { get; set; }

    /// <summary>
    /// 优惠前金额
    /// </summary>
    public decimal OriginalAmount { get; set; }

    /// <summary>
    /// 优惠金额
    /// </summary>
    public decimal DiscountAmount { get; set; }

    /// <summary>
    /// 实际支付金额
    /// </summary>
    public decimal ActualAmount { get; set; }

    /// <summary>
    /// 优惠券使用规则说明
    /// </summary>
    public string? CouponRuleNote { get; set; }

    /// <summary>
    /// 微信支付参数 (微信支付时返回)
    /// </summary>
    public object? WechatPayParams { get; set; }

    /// <summary>
    /// 支付二维码URL (微信Native支付时返回)
    /// </summary>
    public string? QrcodeUrl { get; set; }

    /// <summary>
    /// 交易类型
    /// </summary>
    public string? TradeType { get; set; }
}

/// <summary>
/// 报名验证结果DTO
/// </summary>
public class RegistrationValidationResult
{
    /// <summary>
    /// 是否通过验证
    /// </summary>
    public bool IsValid { get; set; }

    /// <summary>
    /// 错误信息
    /// </summary>
    public string? ErrorMessage { get; set; }

    /// <summary>
    /// 验证详情
    /// </summary>
    public List<ValidationDetail>? Details { get; set; }
}

/// <summary>
/// 验证详情DTO
/// </summary>
public class ValidationDetail
{
    /// <summary>
    /// 验证项名称
    /// </summary>
    public string ItemName { get; set; } = string.Empty;

    /// <summary>
    /// 是否通过
    /// </summary>
    public bool IsPassed { get; set; }

    /// <summary>
    /// 消息
    /// </summary>
    public string Message { get; set; } = string.Empty;
}