storage

type Directory struct {
	Path string
}

type Message struct {
	ID      smtpMessage.MessageID    `bson:"id"`
	Room    string                   `bson:"room"`
	From    []*mail.Address          `bson:"from"`
	To      []*mail.Address          `bson:"to"`
	Subject string                   `bson:"subject"`
	Date    time.Time                `bson:"date"`
	Message *smtpMessage.SMTPMessage `bson:"message"`
}

type Mongo struct {
	Collection *mongo.Collection
}

type Room = string

type SearchQuery = map[string]string

type Storage interface {
	// Store `message` to specific `room`
	Store(room Room, message *smtpMessage.SMTPMail) (smtpMessage.MessageID, error)
	// List retrieve list of messages based on `query` starting with `offset` index and count limited by `limit`
	// `query` - represents of key->value map, where key is search parameter
	List(room Room, query SearchQuery, offset, limit int) ([]smtpMessage.SMTPMail, int, error)
	// Count total messages in storage
	Count(room Room) int
	// Delete delete specific message from storage by `messageId`
	Delete(room Room, messageId smtpMessage.MessageID) error
	// Load find specific message from storage by `messageId`
	Load(room Room, messageId smtpMessage.MessageID) (*smtpMessage.SMTPMail, error)

	// RoomsList returns list of rooms in system
	RoomsList(offset, limit int) ([]Room, error)
	// RoomsCount total count rooms in storage
	RoomsCount() int
	// DeleteRoom delete all messages in room from storage
	DeleteRoom(room Room) error
}