kilonova

type Attachment struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`
	Visible   bool      `json:"visible"`
	Private   bool      `json:"private"`
	Exec      bool      `json:"exec"`

	LastUpdatedAt time.Time `json:"last_updated_at"`
	LastUpdatedBy *int      `json:"last_updated_by"`

	Name string `json:"name"`
	// Data []byte `json:"data,omitempty"`
	Size int `json:"data_size"`
}

type AttachmentFilter struct {
	ID         *int
	IDs        []int
	ProblemID  *int
	BlogPostID *int

	Visible *bool
	Private *bool
	Exec    *bool
	Name    *string

	Limit  int
	Offset int
}

type AttachmentUpdate struct {
	Visible *bool   `json:"visible"`
	Private *bool   `json:"private"`
	Exec    *bool   `json:"exec"`
	Name    *string `json:"name"`
}

type AuditLog struct {
	ID        int        `json:"id"`
	LogTime   time.Time  `json:"log_time"`
	SystemLog bool       `json:"system_log"`
	Message   string     `json:"message"`
	Author    *UserBrief `json:"author"`
}

type BlogPost struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`
	AuthorID  int       `json:"author_id"`

	Title string `json:"title"`

	Slug    string `json:"slug"` // unique, used in URL
	Visible bool   `json:"visible"`

	PublishedAt *time.Time `json:"published_at"`
}

type BlogPostFilter struct {
	ID       *int  `json:"id"`
	IDs      []int `json:"ids"`
	AuthorID *int  `json:"author_id"`

	Slug *string `json:"slug"`

	Limit  int `json:"limit"`
	Offset int `json:"offset"`

	Look        bool       `json:"-"`
	LookingUser *UserBrief `json:"-"`

	// Check posts that have attachment with that ID
	// Currently used for logging statement changes
	AttachmentID *int `json:"-"`

	Ordering  string `json:"ordering"`
	Ascending bool   `json:"ascending"`
}

type BlogPostUpdate struct {
	Slug    *string `json:"slug"`
	Visible *bool   `json:"visible"`
	Title   *string `json:"title"`
}

type Contest struct {
	ID        int          `json:"id"`
	CreatedAt time.Time    `json:"created_at"`
	Name      string       `json:"name"`
	Editors   []*UserBrief `json:"editors"`
	Testers   []*UserBrief `json:"testers"`

	Description string `json:"description"`

	// PublicJoin indicates whether a user can freely join a contest
	// or he needs to be manually added
	PublicJoin bool `json:"public_join"`

	// RegisterDuringContest indicates whether a user can join a contest while it's running
	// It is useless without PublicJoin set to true
	RegisterDuringContest bool `json:"register_during_contest"`

	// Visible indicates whether a contest can be seen by others
	// Contestants may be able to see the contest
	Visible bool `json:"hidden"`

	// PublicLeaderboard controls whether the contest's leaderboard
	// is viewable by everybody or just admins
	PublicLeaderboard bool `json:"public_leaderboard"`

	LeaderboardStyle      LeaderboardType `json:"leaderboard_style"`
	LeaderboardFreeze     *time.Time      `json:"leaderboard_freeze"`
	ICPCSubmissionPenalty int             `json:"icpc_submission_penalty"`

	LeaderboardAdvancedFilter bool `json:"leaderboard_advanced_filter"`

	SubmissionCooldown time.Duration `json:"submission_cooldown"`
	QuestionCooldown   time.Duration `json:"question_cooldown"`

	StartTime time.Time `json:"start_time"`
	EndTime   time.Time `json:"end_time"`

	// PerUserTime records the number of seconds a user has in an USACO-style participation
	// Setting it to 0 will make contests behave "normally"
	PerUserTime int `json:"per_user_time"`

	Type ContestType `json:"type"`

	// MaxSubs is the maximum number of submissions
	// that someone is allowed to send to a problem during a contest
	// < 0 => no limit
	MaxSubs int `json:"max_subs"`
}

type ContestAnnouncement struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`
	ContestID int       `json:"contest_id"`
	Text      string    `json:"text"`
}

type ContestFilter struct {
	ID          *int       `json:"id"`
	IDs         []int      `json:"ids"`
	Look        bool       `json:"-"`
	LookingUser *UserBrief `json:"-"`

	ProblemID *int `json:"problem_id"`

	// Shows contests in which user with this ID was registered
	ContestantID *int `json:"contestant_id"`

	// Shows contests in which user with this ID is an editor
	EditorID *int `json:"editor_id"`

	Future  bool `json:"future"`
	Running bool `json:"running"`
	Ended   bool `json:"ended"`

	Type ContestType `json:"type"`

	// Filters for that user the *important* contests:
	//   - Official contests
	//   - Virtual contests with participation
	//   - Virtual contests the user organizes (editor/tester)
	// This is used in filtering the contests for the main page
	ImportantContestsUID *int `json:"important_contest_uid"`

	Since *time.Time `json:"-"`

	Limit  int `json:"limit"`
	Offset int `json:"offset"`

	Ordering  string `json:"ordering"`
	Ascending bool   `json:"ascending"`
}

type ContestInvitation struct {
	ID string `json:"id"`

	CreatedAt time.Time `json:"created_at" db:"created_at"`
	ContestID int       `json:"contest_id" db:"contest_id"`
	CreatorID *int      `json:"creator_id" db:"creator_id"`

	RedeemCount int  `json:"redeem_count" db:"redeem_cnt"`
	MaxCount    *int `json:"max_invitation_count" db:"max_invitation_cnt"`

	Expired bool `json:"expired"`
}

type ContestLeaderboard struct {
	ProblemOrder []int               `json:"problem_ordering"`
	ProblemNames map[int]string      `json:"problem_names"`
	Entries      []*LeaderboardEntry `json:"entries"`

	AdvancedFilter bool `json:"advanced_filter"`

	FreezeTime *time.Time      `json:"freeze_time"`
	Type       LeaderboardType `json:"type"`
}

type ContestQuestion struct {
	ID        int       `json:"id"`
	AuthorID  int       `json:"author_id"`
	AskedAt   time.Time `json:"asked_at"`
	ContestID int       `json:"contest_id"`
	Text      string    `json:"text"`

	ResponedAt *time.Time `json:"responded_at"`
	Response   *string    `json:"response"`
}

type ContestRegistration struct {
	CreatedAt time.Time `json:"created_at" db:"created_at"`
	ContestID int       `json:"contest_id" db:"contest_id"`
	UserID    int       `json:"user_id" db:"user_id"`

	IndividualStartTime *time.Time `json:"individual_start" db:"individual_start_at"`
	IndividualEndTime   *time.Time `json:"individual_end" db:"individual_end_at"`

	InvitationID *string `json:"invitation_id" db:"invitation_id"`
}

type ContestType string

type ContestUpdate struct {
	Name *string `json:"name"`

	PublicJoin *bool `json:"public_join"`
	Visible    *bool `json:"visible"`

	Description *string `json:"description"`

	StartTime *time.Time `json:"start_time"`
	EndTime   *time.Time `json:"end_time"`

	MaxSubs *int `json:"max_subs"`

	RegisterDuringContest *bool `json:"register_during_contest"`

	PublicLeaderboard     *bool           `json:"public_leaderboard"`
	LeaderboardStyle      LeaderboardType `json:"leaderboard_style"`
	ICPCSubmissionPenalty *int            `json:"icpc_submission_penalty"`

	LeaderboardAdvancedFilter *bool `json:"leaderboard_advanced_filter"`

	ChangeLeaderboardFreeze bool       `json:"change_leaderboard_freeze"`
	LeaderboardFreeze       *time.Time `json:"leaderboard_freeze"`

	// Normally I'd put a *time.Duration directly here, but schema has a hard time decoding them
	// So the convention is: the unit is an integer number of milliseconds (the resolution set in the DB)
	SubmissionCooldown *int `json:"submission_cooldown"`
	QuestionCooldown   *int `json:"question_cooldown"`

	Type ContestType `json:"type"`

	PerUserTime *int `json:"per_user_time"` // Seconds
}

type Donation struct {
	ID        int       `json:"id"`
	DonatedAt time.Time `json:"donated_at"`

	User     *UserBrief `json:"user"`
	Amount   float64    `json:"amount"`
	Currency string     `json:"currency"`

	Source DonationSource `json:"source"`
	Type   DonationType   `json:"type"`

	RealName string `json:"real_name"`

	TransactionID string     `json:"transaction_id"`
	CancelledAt   *time.Time `json:"cancelled_at"`
}

type DonationSource string

type DonationType string

type EvalType string

type FullSubmission struct {
	Submission
	Author   *UserBrief `json:"author"`
	Problem  *Problem   `json:"problem"`
	SubTests []*SubTest `json:"subtests"`

	SubTasks []*SubmissionSubTask `json:"subtasks"`

	// TODO: maybe remove?
	Code []byte `json:"code"`

	// ProblemEditor returns whether the looking user is a problem editor
	ProblemEditor bool `json:"problem_editor"`

	CodeTrulyVisible bool `json:"truly_visible"`
}

type LeaderboardEntry struct {
	User *UserBrief `json:"user"`

	// For classic mode
	ProblemScores map[int]decimal.Decimal `json:"scores"`
	TotalScore    decimal.Decimal         `json:"total"`

	// For ICPC mode
	ProblemAttempts map[int]int `json:"attempts"`
	Penalty         int         `json:"penalty"`
	NumSolved       int         `json:"num_solved"`
	// ProblemTimes is expressed as number of minutes since start
	ProblemTimes map[int]float64 `json:"last_times"`

	LastTime   *time.Time `json:"last_time"`
	FreezeTime *time.Time `json:"freeze_time"`
}

type LeaderboardType string

type MOSSSubmission struct {
	ID        int       `json:"id" db:"id"`
	CreatedAt time.Time `json:"created_at" db:"created_at"`

	ContestID int `json:"contest_id" db:"contest_id"`
	ProblemID int `json:"problem_id" db:"problem_id"`

	Language string `json:"language" db:"language"`

	URL      string `json:"url" db:"url"`
	SubCount int    `json:"subcount" db:"subcount"`
}

type Mailer interface {
	SendEmail(msg *MailerMessage) error
}

type MailerMessage struct {
	To      string
	Subject string
	ReplyTo string

	PlainContent string
	HTMLContent  string
}

type MarkdownRenderer interface {
	Render(src []byte, ctx *RenderContext) ([]byte, error)
}

type PreferredTheme string

type Problem struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`
	Name      string    `json:"name"`
	TestName  string    `json:"test_name"`

	DefaultPoints decimal.Decimal `json:"default_points"`

	Visible      bool `json:"visible"`
	VisibleTests bool `json:"visible_tests"`

	// Limit stuff
	TimeLimit   float64 `json:"time_limit"`
	MemoryLimit int     `json:"memory_limit"`
	SourceSize  int     `json:"source_size"`

	SourceCredits string `json:"source_credits"`

	// Used only for leaderboard scoring right now
	ScoreScale decimal.Decimal `json:"score_scale"`

	// Eval stuff
	ConsoleInput   bool  `json:"console_input"`
	ScorePrecision int32 `json:"score_precision"`

	PublishedAt     *time.Time  `json:"published_at"`
	ScoringStrategy ScoringType `json:"scoring_strategy"`
}

type ProblemChecklist struct {
	ProblemID        int  `json:"problem_id" db:"problem_id"`
	HasSourceCredits bool `json:"has_source_credits" db:"has_source"`

	NumPDF      int `json:"num_pdf_files" db:"num_pdf"`
	NumMarkdown int `json:"num_md_files" db:"num_md"`

	NumTests    int `json:"num_tests" db:"num_tests"`
	NumSubtasks int `json:"num_subtasks" db:"num_subtasks"`

	NumAuthorTags int `json:"num_author_tags" db:"num_authors"`
	NumOtherTags  int `json:"num_other_tags" db:"num_other_tags"`

	NumSolutions int `json:"num_sols" db:"num_sols"`
}

type ProblemEvalSettings struct {
	// Files to be included during compilation, but not in the compile command
	HeaderFiles []string `json:"header_files"`
	// List of all grader files detected in attachments. Further processing is required to filter by language on evaluation
	GraderFiles []string `json:"grader_files"`
	// If problem has custom checker, this is non-empty
	CheckerName string `json:"has_checker"`
	// If problem has custom checker that is marked as legacy
	LegacyChecker bool `json:"legacy_checker"`

	// Stores the list of languages that are allowed to be submitted based on existing attachments
	LanguageWhitelist []string `json:"lang_whitelist"`
}

type ProblemFilter struct {
	ID           *int    `json:"id"`
	IDs          []int   `json:"ids"`
	ConsoleInput *bool   `json:"console_input"`
	Visible      *bool   `json:"visible"`
	Name         *string `json:"name"`

	FuzzyName *string `json:"name_fuzzy"`

	// DeepListID - the list ID in which to search recursively for problems
	DeepListID *int `json:"deep_list_id"`

	// EditorUserID filter marks if the user is part of the *editors* of the problem
	// Note that it excludes factors like admin or contest editor, it's just the editors in the access section.
	EditorUserID *int `json:"editor_user_id"`

	Tags []*TagGroup `json:"tags"`

	Look             bool       `json:"-"`
	LookEditor       bool       `json:"-"`
	LookFullyVisible bool       `json:"-"`
	LookingUser      *UserBrief `json:"-"`

	// Should be "en" or "ro", if non-nil
	Language *string `json:"lang"`

	// Check problems that have attachment with that ID
	// Currently used for logging statement changes
	AttachmentID *int `json:"-"`

	// Used for getting problems for MOSS
	ContestID *int `json:"-"`

	SolvedBy    *int `json:"solved_by"`
	AttemptedBy *int `json:"attempted_by"`

	// Unassociated filter ensures that all returned problems are not "bound" to a problem list
	Unassociated bool `json:"-"`

	// This is actually not used during filtering in DB, it's used by (*api.API).searchProblems
	ScoreUserID *int `json:"score_user_id"`

	Limit  int `json:"limit"`
	Offset int `json:"offset"`

	Ordering   string `json:"ordering"`
	Descending bool   `json:"descending"`
}

type ProblemList struct {
	ID          int       `json:"id"`
	CreatedAt   time.Time `json:"created_at"`
	AuthorID    int       `json:"author_id"`
	Title       string    `json:"title"`
	Description string    `json:"description"`
	List        []int     `json:"list"`

	// NumProblems holds the number of problems including sublists
	NumProblems int `json:"num_problems"`

	SidebarHidable    bool `json:"sidebar_hidable"`
	FeaturedChecklist bool `json:"featured_checklist"`

	// This is a separate type and not a ProblemList because it might
	// not necessairly be a tree-like structure (ie. it might have cycles)
	SubLists []*ShallowProblemList `json:"sublists"`
}

type ProblemListFilter struct {
	Root              bool  `json:"root"`
	FeaturedChecklist *bool `json:"featured_checklist"`
	// Note that results with ParentID include that parent as well, it should print out the entire tree
	ParentID *int `json:"parent_id"`
}

type ProblemListUpdate struct {
	AuthorID    *int    `json:"author_id"`
	Title       *string `json:"title"`
	Description *string `json:"description"`

	SidebarHidable    *bool `json:"sidebar_hidable"`
	FeaturedChecklist *bool `json:"featured_checklist"`
}

type ProblemUpdate struct {
	Name     *string `json:"name"`
	TestName *string `json:"test_name"`

	DefaultPoints *decimal.Decimal `json:"default_points"`

	ScoreScale *decimal.Decimal `json:"score_scale"`

	TimeLimit   *float64 `json:"time_limit"`
	MemoryLimit *int     `json:"memory_limit"`
	SourceSize  *int     `json:"source_size"`

	SourceCredits *string `json:"source_credits"`

	ConsoleInput *bool `json:"console_input"`
	Visible      *bool `json:"visible"`
	VisibleTests *bool `json:"visible_tests"`

	ScorePrecision  *int32      `json:"score_precision"`
	ScoringStrategy ScoringType `json:"scoring_strategy"`
}

type RenderContext struct {
	Problem  *Problem
	BlogPost *BlogPost
}

type ScoredProblem struct {
	Problem
	ScoreUserID *int `json:"score_user_id"`

	MaxScore *decimal.Decimal `json:"max_score"`
	// For showing the published/unpublished label on front page
	IsEditor bool `json:"is_editor"`
}

type ScoringType string

type ShallowProblemList struct {
	ID       int    `json:"id"`
	Title    string `json:"title"`
	AuthorID int    `json:"author_id"`

	SidebarHidable    bool `json:"sidebar_hidable"`
	FeaturedChecklist bool `json:"featured_checklist"`
	// NumProblems holds the number of problems including sublists
	NumProblems int `json:"num_problems"`
}

type StatementVariant struct {
	// Language, ie. ro/en
	Language string `json:"lang"`
	// Format, ie. pdf/md/etc.
	Format string `json:"format"`
	// Type, ie. normal/short/llm/etc.
	Type string `json:"type"`
	// Private is true if the attachment for this statement variant is private.
	// it may be private if it's currently being worked on.
	Private bool `json:"public"`
}

type Status string

type StatusError struct {
	Code int
	Text string

	WrappedError error
}

type SubTask struct {
	ID        int             `json:"id"`
	CreatedAt time.Time       `json:"created_at"`
	ProblemID int             `json:"problem_id"`
	VisibleID int             `json:"visible_id"`
	Score     decimal.Decimal `json:"score"`
	Tests     []int           `json:"tests"`
}

type SubTaskUpdate struct {
	VisibleID *int             `json:"visible_id"`
	Score     *decimal.Decimal `json:"score"`
}

type SubTest struct {
	ID           int             `json:"id"`
	CreatedAt    time.Time       `db:"created_at" json:"created_at"`
	Done         bool            `json:"done"`
	Skipped      bool            `json:"skipped"`
	Verdict      string          `json:"verdict"`
	Time         float64         `json:"time"`
	Memory       int             `json:"memory"`
	Percentage   decimal.Decimal `json:"percentage"`
	TestID       *int            `db:"test_id" json:"test_id"`
	SubmissionID int             `db:"submission_id" json:"submission_id"`

	VisibleID int `db:"visible_id" json:"visible_id"`

	Score decimal.Decimal `json:"score"`
}

type SubTestUpdate struct {
	Memory     *int
	Time       *float64
	Percentage *decimal.Decimal
	Verdict    *string
	Done       *bool
	Skipped    *bool
}

type Submission struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`
	UserID    int       `json:"user_id"`
	ProblemID int       `json:"problem_id"`
	Language  string    `json:"language"`
	// Code      string    `json:"code,omitempty"`
	CodeSize int    `json:"code_size"`
	Status   Status `json:"status"`

	CompileError   *bool   `json:"compile_error"`
	CompileMessage *string `json:"compile_message,omitempty"`

	ContestID *int `json:"contest_id"`

	MaxTime   float64 `json:"max_time"`
	MaxMemory int     `json:"max_memory"`

	Score          decimal.Decimal `json:"score"`
	ScorePrecision int32           `json:"score_precision"`
	// Used only for leaderboard scoring right now
	ScoreScale decimal.Decimal `json:"score_scale"`

	CompileTime *float64 `json:"compile_time"`

	SubmissionType EvalType `json:"submission_type"`
	ICPCVerdict    *string  `json:"icpc_verdict"`
}

type SubmissionFilter struct {
	ID        *int  `json:"id"`
	IDs       []int `json:"ids"`
	UserID    *int  `json:"user_id"`
	ProblemID *int  `json:"problem_id"`
	ContestID *int  `json:"contest_id"`

	Status Status `json:"status"`

	// If waiting is true, it returns all submissions with creating/waiting/working status
	// Basically, all unfinished submissions. It's used in the creation of submissions to check limits
	Waiting bool `json:"waiting"`

	Lang         *string `json:"lang"`
	CompileError *bool   `json:"compile_error"`

	Score *decimal.Decimal `json:"score"`

	Look        bool       `json:"-"`
	LookingUser *UserBrief `json:"-"`

	Since *time.Time `json:"-"`

	FromAuthors bool `json:"from_authors"`

	Limit  int `json:"limit"`
	Offset int `json:"offset"`

	Ordering  string `json:"ordering"`
	Ascending bool   `json:"ascending"`
}

type SubmissionPaste struct {
	ID         string      `json:"id"`
	Submission *Submission `json:"sub"`
	Author     *UserBrief  `json:"author"`
}

type SubmissionSubTask struct {
	ID        int       `json:"id"`
	CreatedAt time.Time `json:"created_at"`

	SubmissionID int  `json:"submission_id"`
	UserID       int  `json:"user_id"`
	SubtaskID    *int `json:"subtask_id"`

	ProblemID int  `json:"problem_id"`
	ContestID *int `json:"contest_id"`
	VisibleID int  `json:"visible_id"`

	Score           decimal.Decimal  `json:"score"`
	FinalPercentage *decimal.Decimal `json:"final_percentage,omitempty"`

	ScoreScale *decimal.Decimal `json:"score_scale"`

	ScorePrecision int `json:"score_precision"`

	Subtests []int `json:"subtests"`
}

type SubmissionUpdate struct {
	Status Status
	Score  *decimal.Decimal

	CompileError   *bool
	CompileMessage *string
	CompileTime    *float64

	MaxTime   *float64
	MaxMemory *int

	ChangeVerdict bool
	ICPCVerdict   *string
}

type Tag struct {
	ID   int     `json:"id"`
	Name string  `json:"name"`
	Type TagType `json:"type"`
}

type TagGroup struct {
	// Negate instructs wether the filtered problem should have
	// or NOT have the corresponding tags in order for it to match
	Negate bool `json:"negate"`
	// TagIDs represents the set of tags which, when intersected with
	// the problem's tag set must be non-empty in order to get a match
	TagIDs []int `json:"tag_ids"`
}

type TagType string

type Test struct {
	ID        int             `json:"id"`
	CreatedAt time.Time       `db:"created_at" json:"created_at"`
	Score     decimal.Decimal `json:"score"`
	ProblemID int             `db:"problem_id" json:"problem_id"`
	VisibleID int             `db:"visible_id" json:"visible_id"`
}

type TestUpdate struct {
	Score     *decimal.Decimal `json:"score"`
	VisibleID *int             `json:"visible_id"`
}

type Translation map[string]string

type Translations map[string]Translation

type UserBrief struct {
	ID       int    `json:"id"`
	Name     string `json:"name"`
	Admin    bool   `json:"admin"`
	Proposer bool   `json:"proposer"`

	DisplayName string `json:"display_name"`

	Generated bool `json:"generated"`
}

type UserFilter struct {
	ID  *int  `json:"id"`
	IDs []int `json:"ids"`

	// Name is case insensitive
	Name  *string `json:"name"`
	Email *string `json:"email"`

	// For user filtering
	FuzzyName *string `json:"name_fuzzy"`

	Admin    *bool `json:"admin"`
	Proposer *bool `json:"proposer"`

	// For registrations
	ContestID *int `json:"contest_id"`

	// For filtering in leaderboards
	Generated *bool `json:"generated"`

	// For session recognition
	SessionID *string `json:"session_id"`

	Limit  int `json:"limit"`
	Offset int `json:"offset"`
}

type UserFull struct {
	UserBrief
	Bio               string         `json:"bio,omitempty"`
	Email             string         `json:"email,omitempty"`
	VerifiedEmail     bool           `json:"verified_email"`
	PreferredLanguage string         `json:"preferred_language"`
	PreferredTheme    PreferredTheme `json:"preferred_theme"`
	EmailVerifResent  time.Time      `json:"-"`
	CreatedAt         time.Time      `json:"created_at"`
	// Generated         bool           `json:"generated"`
	LockedLogin      bool `json:"locked_login"`
	NameChangeForced bool `json:"name_change_forced"`
}

type UserFullUpdate struct {
	UserUpdate

	Name *string `json:"name"`

	Email *string `json:"email"`

	Admin    *bool `json:"admin"`
	Proposer *bool `json:"proposer"`

	LockedLogin        *bool `json:"locked_login"`
	NameChangeRequired *bool `json:"name_change_required"`

	VerifiedEmail    *bool      `json:"verified_email"`
	EmailVerifSentAt *time.Time `json:"-"`
}

type UserUpdate struct {
	DisplayName *string `json:"display_name"`

	Bio *string `json:"bio"`

	PreferredLanguage string         `json:"-"`
	PreferredTheme    PreferredTheme `json:"-"`
}

type UsernameChange struct {
	UserID    int       `json:"user_id" db:"user_id"`
	Name      string    `json:"name" db:"name"`
	ChangedAt time.Time `json:"changed_at" db:"changed_at"`
}