package models

import (
	"time"
	"gorm.io/gorm"
)

// Photo 照片模型
type Photo struct {
	ID          uint           `gorm:"primaryKey" json:"id"`
	Title       string         `gorm:"size:255;not null" json:"title"`
	Description string         `gorm:"type:text" json:"description"`
	Filename    string         `gorm:"size:255;not null" json:"filename"`
	FilePath    string         `gorm:"size:500;not null" json:"file_path"`
	FileSize    int64          `json:"file_size"`
	MimeType    string         `gorm:"size:100" json:"mime_type"`
	Width       int            `json:"width"`
	Height      int            `json:"height"`
	CategoryID  uint           `json:"category_id"`
	Category    *Category      `gorm:"foreignKey:CategoryID" json:"category,omitempty"`
	Tags        []Tag          `gorm:"many2many:photo_tags;" json:"tags,omitempty"`
	EXIF        string         `gorm:"type:jsonb" json:"exif"`
	TakenAt     *time.Time     `json:"taken_at"`
	Location    string         `gorm:"size:255" json:"location"`
	IsPublic    bool           `gorm:"default:true" json:"is_public"`
	Status      string         `gorm:"size:20;default:draft" json:"status"`
	ViewCount   int            `gorm:"default:0" json:"view_count"`
	LikeCount   int            `gorm:"default:0" json:"like_count"`
	UserID      uint           `gorm:"not null" json:"user_id"`
	User        *User          `gorm:"foreignKey:UserID" json:"user,omitempty"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 返回照片表名
func (Photo) TableName() string {
	return "photos"
}

// PhotoStatus 照片状态常量
const (
	StatusDraft     = "draft"
	StatusPublished = "published"
	StatusArchived  = "archived"
)

// CreatePhotoRequest 创建照片请求
type CreatePhotoRequest struct {
	Title       string     `json:"title" binding:"required,max=255"`
	Description string     `json:"description"`
	CategoryID  uint       `json:"category_id" binding:"required"`
	TagIDs      []uint     `json:"tag_ids"`
	TakenAt     *time.Time `json:"taken_at"`
	Location    string     `json:"location" binding:"max=255"`
	IsPublic    *bool      `json:"is_public"`
	Status      string     `json:"status" binding:"omitempty,oneof=draft published archived"`
}

// UpdatePhotoRequest 更新照片请求
type UpdatePhotoRequest struct {
	Title       *string    `json:"title" binding:"omitempty,max=255"`
	Description *string    `json:"description"`
	CategoryID  *uint      `json:"category_id"`
	TagIDs      []uint     `json:"tag_ids"`
	TakenAt     *time.Time `json:"taken_at"`
	Location    *string    `json:"location" binding:"omitempty,max=255"`
	IsPublic    *bool      `json:"is_public"`
	Status      *string    `json:"status" binding:"omitempty,oneof=draft published archived"`
}

// PhotoListParams 照片列表查询参数
type PhotoListParams struct {
	Page       int    `form:"page,default=1" binding:"min=1"`
	Limit      int    `form:"limit,default=20" binding:"min=1,max=100"`
	CategoryID uint   `form:"category_id"`
	TagID      uint   `form:"tag_id"`
	UserID     uint   `form:"user_id"`
	Status     string `form:"status" binding:"omitempty,oneof=draft published archived"`
	Search     string `form:"search"`
	SortBy     string `form:"sort_by,default=created_at" binding:"omitempty,oneof=created_at taken_at title view_count like_count"`
	SortOrder  string `form:"sort_order,default=desc" binding:"omitempty,oneof=asc desc"`
	Year       int    `form:"year"`
	Month      int    `form:"month" binding:"min=1,max=12"`
}

// PhotoResponse 照片响应
type PhotoResponse struct {
	*Photo
	ThumbnailURLs map[string]string `json:"thumbnail_urls,omitempty"`
}

// PhotoListResponse 照片列表响应
type PhotoListResponse struct {
	Photos []PhotoResponse `json:"photos"`
	Total  int64           `json:"total"`
	Page   int             `json:"page"`
	Limit  int             `json:"limit"`
}