object_model

type AddLinkRequest struct {
	Url         string
	Title       string
	Description string
	Username    string
	Tags        map[string]bool
}

type CheckLinkRequest struct {
	Username string
	Url      string
}

type GetLinksRequest struct {
	UrlRegex         string
	TitleRegex       string
	DescriptionRegex string
	Username         string
	Tag              string
	StartToken       string
}

type GetLinksResult struct {
	Links         []Link
	NextPageToken string
}

type GetNewsRequest struct {
	Username   string
	StartToken string
}

type GetNewsResult struct {
	Events    []*LinkManagerEvent
	NextToken string
}

type Link struct {
	Url         string
	Title       string
	Description string
	Status      LinkStatus
	Tags        map[string]bool
	CreatedAt   time.Time
	UpdatedAt   time.Time
}

type LinkCheckerEvents interface {
	OnLinkChecked(username string, url string, status LinkStatus)
}

type LinkManager interface {
	GetLinks(request GetLinksRequest) (GetLinksResult, error)
	AddLink(request AddLinkRequest) error
	UpdateLink(request UpdateLinkRequest) error
	DeleteLink(username string, url string) error
}

type LinkManagerEvent struct {
	EventType LinkManagerEventTypeEnum
	Username  string
	Url       string
	Timestamp time.Time
}

type LinkManagerEventTypeEnum int

type LinkManagerEvents interface {
	OnLinkAdded(username string, link *Link)
	OnLinkUpdated(username string, link *Link)
	OnLinkDeleted(username string, url string)
}

type LinkStatus = string

type NewsManager interface {
	GetNews(request GetNewsRequest) (GetNewsResult, error)
}

type SocialGraphManager interface {
	Follow(followed string, follower string) error
	Unfollow(followed string, follower string) error

	GetFollowing(username string) (map[string]bool, error)
	GetFollowers(username string) (map[string]bool, error)
}

type UpdateLinkRequest struct {
	Url         string
	Title       string
	Description string
	Username    string
	AddTags     map[string]bool
	RemoveTags  map[string]bool
}

type User struct {
	Email string
	Name  string
}

type UserManager interface {
	Register(user User) error
	Login(username string, authToken string) (session string, err error)
	Logout(username string, session string) error
}