initial pase store definitions

store/jsonb.go

@@ -0,0 +1,54 @@
+package store
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+// JSONB is a nullable JSON value backed by raw bytes.
+// Scans from jsonb (Postgres) or TEXT (SQLite). Empty means SQL NULL.
+type JSONB []byte
+
+// Scan implements sql.Scanner.
+func (j *JSONB) Scan(src any) error {
+	if src == nil {
+		*j = nil
+		return nil
+	}
+	switch v := src.(type) {
+	case []byte:
+		// Copy: drivers may reuse the buffer between rows.
+		*j = append((*j)[:0], v...)
+	case string:
+		*j = []byte(v)
+	default:
+		return fmt.Errorf("pase: cannot scan %T into JSONB", src)
+	}
+	return nil
+}
+
+// Value implements driver.Valuer.
+func (j JSONB) Value() (driver.Value, error) {
+	if len(j) == 0 {
+		return nil, nil
+	}
+	return []byte(j), nil
+}
+
+// MarshalJSON makes JSONB transparent in API responses.
+func (j JSONB) MarshalJSON() ([]byte, error) {
+	if len(j) == 0 {
+		return []byte("null"), nil
+	}
+	return []byte(j), nil
+}
+
+// UnmarshalJSON lets you decode directly into JSONB.
+func (j *JSONB) UnmarshalJSON(data []byte) error {
+	if string(data) == "null" {
+		*j = nil
+		return nil
+	}
+	*j = append((*j)[:0], data...)
+	return nil
+}