Move gid and page pkg

Signed-off-by: gearnode <bryan@frimin.fr>

pkg/gid/gid.go

@@ -0,0 +1,102 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package gid
+
+import (
+	"database/sql/driver"
+	"encoding/base64"
+	"encoding/binary"
+	"fmt"
+
+	"go.gearno.de/crypto/uuid"
+)
+
+type (
+	GID uuid.UUID
+)
+
+var (
+	Nil = GID(uuid.Nil)
+)
+
+func ParseGID(encoded string) (GID, error) {
+	gid := GID{}
+
+	err := gid.UnmarshalText([]byte(encoded))
+	if err != nil {
+		return Nil, err
+	}
+
+	return gid, nil
+}
+
+func NewGID(et uint32) (GID, error) {
+	id, err := uuid.NewV7()
+	if err != nil {
+		return Nil, err
+	}
+
+	binary.BigEndian.PutUint32(id[10:14], et)
+
+	return GID(id), nil
+}
+
+func (gid GID) Value() (driver.Value, error) {
+	return gid.String(), nil
+}
+
+func (gid GID) EntityType() uint32 {
+	return binary.BigEndian.Uint32(gid[10:14])
+}
+
+func (gid *GID) Scan(value interface{}) error {
+	switch v := value.(type) {
+	case string:
+		enc := base64.RawURLEncoding
+		id, err := enc.DecodeString(v)
+		if err != nil {
+			return err
+		}
+
+		*gid = GID(id)
+	default:
+		return fmt.Errorf("invalid type for GID: expected string, got %T", value)
+	}
+	return nil
+}
+
+func (gid GID) String() string {
+	return base64.RawURLEncoding.EncodeToString(gid[:])
+}
+
+func (gid GID) MarshalText() ([]byte, error) {
+	enc := base64.RawURLEncoding
+
+	buf := make([]byte, enc.EncodedLen(len(gid)))
+	enc.Encode(buf, gid[:])
+
+	return buf, nil
+}
+
+func (gid *GID) UnmarshalText(encoded []byte) error {
+	enc := base64.RawURLEncoding
+
+	_, err := enc.Decode(gid[:], encoded)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}