Envelope/Backend/Models/Messages.go

package Models

import (
	"database/sql"
	"time"

	"github.com/gofrs/uuid"
)

// MessageData holds the content of the message
// encrypted through the Message.SymmetricKey
type MessageData struct {
	Base
	Data         string     `                json:"data"` // Stored encrypted
	AttachmentID *uuid.UUID `                json:"attachment_id"`
	Attachment   Attachment `                json:"attachment"`
	SenderID     string     `gorm:"not null" json:"sender_id"`     // Stored encrypted
	SymmetricKey string     `gorm:"not null" json:"symmetric_key"` // Stored encrypted
}

// Message holds data pertaining to each users' message
type Message struct {
	Base
	MessageDataID  uuid.UUID    `                       json:"message_data_id"`
	MessageData    MessageData  `                       json:"message_data"`
	SymmetricKey   string       `gorm:"not null"        json:"symmetric_key"`   // Stored encrypted
	AssociationKey string       `gorm:"not null"        json:"association_key"` // Stored encrypted
	Expiry         sql.NullTime `                       json:"expiry"`
	CreatedAt      time.Time    `gorm:"not null"        json:"created_at"`
}