package models

import (
	"errors"

	"code.nonshy.com/nonshy/website/pkg/config"
	"code.nonshy.com/nonshy/website/pkg/log"
)

// Helper functions relating to the inner circle.

// IsInnerCircle returns whether the user is in the inner circle (including if the user is an admin, who is always in the inner circle).
func (u *User) IsInnerCircle() bool {
	return u.InnerCircle || u.HasAdminScope(config.ScopeIsInnerCircle)
}

// AddToInnerCircle adds a user to the circle, sending them a notification in the process.
func AddToInnerCircle(u *User) error {
	if u.InnerCircle {
		return errors.New("already a part of the inner circle")
	}

	u.InnerCircle = true
	if err := u.Save(); err != nil {
		return err
	}

	// Send them a notification.
	notif := &Notification{
		UserID:      u.ID,
		AboutUserID: &u.ID,
		Type:        NotificationInnerCircle,
		Link:        "/inner-circle",
		TableName:   "__inner_circle",
		TableID:     u.ID,
	}
	if err := CreateNotification(notif); err != nil {
		log.Error("AddToInnerCircle: couldn't create notification: %s", err)
	}

	return nil
}

// RemoveFromInnerCircle kicks a user from the inner circle. Any photo they
// had that was marked circle-only is updated to public.
func RemoveFromInnerCircle(u *User) error {
	if !u.InnerCircle {
		return errors.New("is not a part of the inner circle")
	}

	u.InnerCircle = false
	if err := u.Save(); err != nil {
		return err
	}

	// Update their circle-only photos to public.
	if err := DB.Model(&Photo{}).Where(
		"user_id = ? AND visibility = ?",
		u.ID, PhotoInnerCircle,
	).Update("visibility", PhotoPrivate); err != nil {
		log.Error("RemoveFromInnerCircle: couldn't update photo visibility: %s", err.Error)
	}

	// Revoke any historic notification about the circle.
	RemoveNotification("__inner_circle", u.ID)

	return nil
}