Replace SQLite with BadgerDB

pkg/api/models.go

@@ -0,0 +1,31 @@
+package api
+
+import (
+	"fmt"
+	"io"
+	"strconv"
+
+	"github.com/oklog/ulid"
+)
+
+type ULID ulid.ULID
+
+func (u *ULID) UnmarshalGQL(v interface{}) (err error) {
+	str, ok := v.(string)
+	if !ok {
+		return fmt.Errorf("ulid must be a string")
+	}
+
+	id, err := ulid.Parse(str)
+	if err != nil {
+		return fmt.Errorf("failed to parse ULID: %w", err)
+	}
+
+	*u = ULID(id)
+
+	return nil
+}
+
+func (u ULID) MarshalGQL(w io.Writer) {
+	fmt.Fprint(w, strconv.Quote(ulid.ULID(u).String()))
+}