package models

import (
	"database/sql"
	"time"

	slugify "github.com/gosimple/slug"
)

// Group is a collection of Hubs (equivalent to ActivityPub Organizations)
// Refers to the https://www.w3.org/TR/activitystreams-vocabulary/#dfn-group
// Also refers to the Groups table in the database
type Group struct {
	Slug      string `json:"slug"`
	Name      string `json:"name"`
	Note      string `json:"note"`
	Type      string
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

// GetGroup returns a single Group object or nil
func GetGroup(db *sql.DB, slug string) (*Group, error) {
	row := db.QueryRow(`
		select slug, name, note, created_at, updated_at
		from groups where slug = $1
	`, slug)

	var group Group
	err := row.Scan(&group.Slug, &group.Name, &group.Note, &group.CreatedAt, &group.UpdatedAt)

	if err == sql.ErrNoRows {
		return nil, nil
	}
	if err != nil {
		return nil, err
	}
	return &group, nil
}

// PutGroup put new group into db and return slur or error
func PutGroup(db *sql.DB, name string, note string) (string, error) {
	// TODO: make slugify "github.com/gosimple/slug"
	slug := slugify.MakeLang(name, "en")

	query := `
		insert into groups(slug, name, note)
		values ($1, $2, $3)
	`
	_, err := db.Exec(query, slug, name, note)
	return slug, err
}