package model

import "time"

// User represents a row in the `users` table.
//
// PasswordHash is tagged `json:"-"` so it never leaks via JSON marshalling
// even if a caller accidentally passes a User through response.JSON.
//
// EmailVerifiedAt is a pointer so JSON-encoded users carry an explicit `null`
// when the user has not yet verified, instead of an omitted field — the
// frontend uses this to decide whether to show the "verify your email" ribbon.
type User struct {
	ID              string     `json:"id"`
	Email           string     `json:"email"`
	Name            string     `json:"name"`
	AvatarURL       *string    `json:"avatar_url"`
	Role            string     `json:"role"`
	EmailVerifiedAt *time.Time `json:"email_verified_at"`
	PasswordHash    string     `json:"-"`
	TokenVersion    int        `json:"-"`
	CreatedAt       time.Time  `json:"created_at"`
	UpdatedAt       time.Time  `json:"updated_at"`
}

// AuthToken represents a row in the `auth_tokens` table.
// Used for both password reset and email verification flows.
type AuthToken struct {
	ID        string     `json:"id"`
	UserID    string     `json:"user_id"`
	Purpose   string     `json:"purpose"` // "password_reset" | "email_verification"
	TokenHash string     `json:"-"`
	ExpiresAt time.Time  `json:"expires_at"`
	UsedAt    *time.Time `json:"used_at,omitempty"`
	CreatedAt time.Time  `json:"created_at"`
}

const (
	PurposePasswordReset     = "password_reset"
	PurposeEmailVerification = "email_verification"
)

// Bookmark represents a user's bookmarked content.
type Bookmark struct {
	ID           string    `json:"id"`
	UserID       string    `json:"user_id"`
	ContentType  string    `json:"content_type"`
	ContentID    string    `json:"content_id"`
	ContentRef   string    `json:"content_ref"`
	SelectedText *string   `json:"selected_text,omitempty"`
	Note         *string   `json:"note,omitempty"`
	CreatedAt    time.Time `json:"created_at"`
}

// Collection represents a user-created collection.
type Collection struct {
	ID          string    `json:"id"`
	UserID      string    `json:"user_id"`
	Name        string    `json:"name"`
	Description *string   `json:"description,omitempty"`
	IsPublic    bool      `json:"is_public"`
	ItemCount   int       `json:"item_count"`
	CreatedAt   time.Time `json:"created_at"`
	UpdatedAt   time.Time `json:"updated_at"`
}

// Mention represents a mention of content shared by a user.
type Mention struct {
	ID          string    `json:"id"`
	UserID      string    `json:"user_id"`
	ContentType string    `json:"content_type"`
	ContentID   string    `json:"content_id"`
	ContentRef  string    `json:"content_ref"`
	Text        string    `json:"text"`
	CreatedAt   time.Time `json:"created_at"`
}

// ShortURL represents a shortened URL.
type ShortURL struct {
	ID         string     `json:"id"`
	Slug       string     `json:"slug"`
	TargetURL  string     `json:"target_url"`
	CreatedBy  *string    `json:"created_by,omitempty"`
	ClickCount int64      `json:"click_count"`
	CreatedAt  time.Time  `json:"created_at"`
	ExpiresAt  *time.Time `json:"expires_at,omitempty"`
}