package dto

import (
	"time"

	"photography-backend/internal/model/entity"
)

// CreateUserRequest 创建用户请求
type CreateUserRequest struct {
	Username string           `json:"username" binding:"required,min=3,max=50" validate:"required,min=3,max=50"`
	Email    string           `json:"email" binding:"required,email" validate:"required,email"`
	Password string           `json:"password" binding:"required,min=6" validate:"required,min=6"`
	Name     string           `json:"name" binding:"max=100" validate:"max=100"`
	Role     entity.UserRole  `json:"role" binding:"omitempty,oneof=user admin photographer" validate:"omitempty,oneof=user admin photographer"`
}

// UpdateUserRequest 更新用户请求
type UpdateUserRequest struct {
	Username *string `json:"username" binding:"omitempty,min=3,max=50" validate:"omitempty,min=3,max=50"`
	Email    *string `json:"email" binding:"omitempty,email" validate:"omitempty,email"`
	Name     *string `json:"name" binding:"omitempty,max=100" validate:"omitempty,max=100"`
	Avatar   *string `json:"avatar" binding:"omitempty,url" validate:"omitempty,url"`
	Bio      *string `json:"bio" binding:"omitempty,max=1000" validate:"omitempty,max=1000"`
	Website  *string `json:"website" binding:"omitempty,url" validate:"omitempty,url"`
	Location *string `json:"location" binding:"omitempty,max=100" validate:"omitempty,max=100"`
	IsActive *bool   `json:"is_active" binding:"omitempty"`
	IsPublic *bool   `json:"is_public" binding:"omitempty"`
}

// ChangePasswordRequest 修改密码请求
type ChangePasswordRequest struct {
	OldPassword string `json:"old_password" binding:"required" validate:"required"`
	NewPassword string `json:"new_password" binding:"required,min=6" validate:"required,min=6"`
}

// UserResponse 用户响应
type UserResponse struct {
	ID            uint                 `json:"id"`
	Username      string               `json:"username"`
	Email         string               `json:"email"`
	Name          string               `json:"name"`
	Avatar        string               `json:"avatar"`
	Bio           string               `json:"bio"`
	Website       string               `json:"website"`
	Location      string               `json:"location"`
	Role          entity.UserRole      `json:"role"`
	IsActive      bool                 `json:"is_active"`
	IsPublic      bool                 `json:"is_public"`
	EmailVerified bool                 `json:"email_verified"`
	LastLogin     *time.Time           `json:"last_login"`
	LoginCount    int                  `json:"login_count"`
	PhotoCount    int64                `json:"photo_count"`
	AlbumCount    int64                `json:"album_count"`
	CreatedAt     time.Time            `json:"created_at"`
	UpdatedAt     time.Time            `json:"updated_at"`
}

// UserProfileResponse 用户档案响应（公开信息）
type UserProfileResponse struct {
	ID         uint                 `json:"id"`
	Username   string               `json:"username"`
	Name       string               `json:"name"`
	Avatar     string               `json:"avatar"`
	Bio        string               `json:"bio"`
	Website    string               `json:"website"`
	Location   string               `json:"location"`
	Role       entity.UserRole      `json:"role"`
	PhotoCount int64                `json:"photo_count"`
	AlbumCount int64                `json:"album_count"`
	CreatedAt  time.Time            `json:"created_at"`
}

// ListUsersOptions 用户列表查询选项
type ListUsersOptions struct {
	Page     int             `json:"page" form:"page" binding:"omitempty,min=1" validate:"omitempty,min=1"`
	Limit    int             `json:"limit" form:"limit" binding:"omitempty,min=1,max=100" validate:"omitempty,min=1,max=100"`
	Sort     string          `json:"sort" form:"sort" binding:"omitempty,oneof=id username email created_at updated_at" validate:"omitempty,oneof=id username email created_at updated_at"`
	Order    string          `json:"order" form:"order" binding:"omitempty,oneof=asc desc" validate:"omitempty,oneof=asc desc"`
	Role     entity.UserRole `json:"role" form:"role" binding:"omitempty,oneof=user admin photographer" validate:"omitempty,oneof=user admin photographer"`
	IsActive *bool           `json:"is_active" form:"is_active" binding:"omitempty"`
	IsPublic *bool           `json:"is_public" form:"is_public" binding:"omitempty"`
	Search   string          `json:"search" form:"search" binding:"omitempty,max=100" validate:"omitempty,max=100"`
}

// UserListResponse 用户列表响应
type UserListResponse struct {
	Users []UserResponse `json:"users"`
	Total int64          `json:"total"`
	Page  int            `json:"page"`
	Limit int            `json:"limit"`
}

// UserStatsResponse 用户统计响应
type UserStatsResponse struct {
	Total        int64                      `json:"total"`
	Active       int64                      `json:"active"`
	Inactive     int64                      `json:"inactive"`
	Verified     int64                      `json:"verified"`
	Unverified   int64                      `json:"unverified"`
	RoleCounts   map[entity.UserRole]int64  `json:"role_counts"`
	RecentLogins []UserResponse             `json:"recent_logins"`
}

// ConvertToUserResponse 将用户实体转换为响应DTO
func ConvertToUserResponse(user *entity.User) *UserResponse {
	if user == nil {
		return nil
	}

	return &UserResponse{
		ID:            user.ID,
		Username:      user.Username,
		Email:         user.Email,
		Name:          user.Name,
		Avatar:        user.Avatar,
		Bio:           user.Bio,
		Website:       user.Website,
		Location:      user.Location,
		Role:          user.Role,
		IsActive:      user.IsActive,
		IsPublic:      user.IsPublic,
		EmailVerified: user.EmailVerified,
		LastLogin:     user.LastLogin,
		LoginCount:    user.LoginCount,
		CreatedAt:     user.CreatedAt,
		UpdatedAt:     user.UpdatedAt,
	}
}

// ConvertToUserProfile 将用户实体转换为公开档案DTO
func ConvertToUserProfile(user *entity.User) *UserProfileResponse {
	if user == nil {
		return nil
	}

	return &UserProfileResponse{
		ID:        user.ID,
		Username:  user.Username,
		Name:      user.Name,
		Avatar:    user.Avatar,
		Bio:       user.Bio,
		Website:   user.Website,
		Location:  user.Location,
		Role:      user.Role,
		CreatedAt: user.CreatedAt,
	}
}