package model

import (
	"time"

	"gorm.io/gorm"
)

// Attachment represents a file attachment on a message.
// Reference: Chatwoot Attachment model + P2B M3 spec
type Attachment struct {
	ID            uint           `gorm:"primaryKey" json:"id"`
	MessageID     uint           `gorm:"not null;index" json:"message_id"`
	FileType      string         `gorm:"size:50;not null" json:"file_type"` // image/audio/video/file/location/emoji/contact
	ExternalURL   string         `gorm:"size:512" json:"external_url"`
	FileURL       string         `gorm:"size:512" json:"file_url"`
	ThumbURL      string         `gorm:"size:512" json:"thumb_url"`
	FileSize      int            `json:"file_size"`
	FileName      string         `gorm:"size:255" json:"file_name"`
	Width         int            `json:"width"`
	Height        int            `json:"height"`
	AltText       string         `gorm:"size:255" json:"alt_text"`
	Metadata      string         `gorm:"type:jsonb" json:"metadata"`
	CreatedAt     time.Time      `gorm:"autoCreateTime" json:"created_at"`
	DeletedAt     gorm.DeletedAt `gorm:"index" json:"deleted_at,omitempty"`

	Message Message `gorm:"foreignKey:MessageID" json:"message,omitempty"`
}

func (Attachment) TableName() string { return "attachments" }