WeKnora deployment source with the reviewed wiki identity, summary and recovery fixes

internal/types/json.go

@@ -0,0 +1,85 @@
+package types
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+)
+
+// JSON is a custom type that wraps json.RawMessage.
+// Used for storing JSON data in the database.
+type JSON json.RawMessage
+
+// Scan implements the sql.Scanner interface.
+func (j *JSON) Scan(value interface{}) error {
+	if value == nil {
+		*j = nil
+		return nil
+	}
+
+	var bytes []byte
+	switch v := value.(type) {
+	case []byte:
+		bytes = v
+	case string:
+		bytes = []byte(v)
+	default:
+		return errors.New("type assertion to []byte or string failed")
+	}
+
+	if len(bytes) == 0 {
+		*j = nil
+		return nil
+	}
+
+	result := json.RawMessage{}
+	err := json.Unmarshal(bytes, &result)
+	*j = JSON(result)
+	return err
+}
+
+// Value implements the driver.Valuer interface.
+func (j JSON) Value() (driver.Value, error) {
+	if len(j) == 0 {
+		return nil, nil
+	}
+	return json.RawMessage(j).MarshalJSON()
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+func (j JSON) MarshalJSON() ([]byte, error) {
+	if len(j) == 0 {
+		return []byte("null"), nil
+	}
+	return j, nil
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (j *JSON) UnmarshalJSON(data []byte) error {
+	if j == nil {
+		return errors.New("JSON: UnmarshalJSON on nil pointer")
+	}
+	copied := make([]byte, len(data))
+	copy(copied, data)
+	*j = JSON(copied)
+	return nil
+}
+
+// ToString converts JSON to a string.
+func (j JSON) ToString() string {
+	if len(j) == 0 {
+		return "{}"
+	}
+	return string(j)
+}
+
+// Map converts JSON to a map.
+func (j JSON) Map() (map[string]interface{}, error) {
+	if len(j) == 0 {
+		return map[string]interface{}{}, nil
+	}
+
+	var m map[string]interface{}
+	err := json.Unmarshal(j, &m)
+	return m, err
+}