add some works

data/data.go

@@ -0,0 +1,32 @@
+package data
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+var (
+	pool *sql.DB
+)
+
+func GetDB() *sql.DB {
+	if pool == nil {
+		// TODO write text
+		panic("")
+	}
+	return pool
+}
+
+func NewDB() (*sql.DB, error) {
+	const (
+		host   = "localhost"
+		user   = "admin"
+		pass   = "Bambukalo2201"
+		dbname = "subhub"
+	)
+
+	dbConnString := fmt.Sprintf("%s:%s@%s/%s?charset=utf8mb4&parseTime=true",
+		user, pass, host, dbname)
+
+	return sql.Open("mysql", dbConnString)
+}

data/models/group.go

@@ -0,0 +1,52 @@
+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
+}