package nosqldb_sdk

import (
	"C"
)
import (
	"encoding/json"
	"nosql_db_sdk_ffi/util/ptrproxy"
	"unsafe"

	"github.com/oracle/nosql-go-sdk/nosqldb"
)

// StringArray 構造体を定義
type StringArray struct {
    List []string `json:"list"`
}

//export ffi_nosqldb_query_result_get_results
func ffi_nosqldb_query_result_get_results(unsafe_nosqldb_query_result_ptr NosqldbQueryResult) (*C.char, Error) {
	nosqldb_query_result_ptr, ok := ptrproxy.Deref(unsafe.Pointer(unsafe_nosqldb_query_result_ptr))
	if !ok {
		return nil, C.CString("NosqldbQureyResultPtr cannot deref")
	}
	query_result := (*nosqldb.QueryResult)(nosqldb_query_result_ptr)

	res, err := query_result.GetResults()
	if err != nil {
		return nil, C.CString(err.Error())
	}

	// []*types.MapValue型から[]string型に変換
	stringSlice := make([]string, len(res))
	for i, go_map := range res {
		value, err := json.Marshal(go_map)
		if !ok {
			return nil, C.CString(err.Error())
		}
		stringSlice[i] =  string(value)
	}

	strArr := StringArray{
		List: stringSlice,
	}

	jsonData, err := json.Marshal(strArr)
	if err != nil {
		return nil, C.CString(err.Error())
	}
	return C.CString(string(jsonData)), nil
}