package qmc

import (
	"bytes"
	"errors"
	"os/exec"

	"git.um-react.app/um/cli/algo/common"
	"go.uber.org/zap"
)

func LoadMMKVOrDefault(opts MMKVLoaderOptions, logger *zap.Logger) (result common.QMCKeys, err error) {
	cliExe := opts.CliExe
	if cliExe == "" {
		cliExe = "qmpc-mmkv-cli.exe"
	}

	cmd := exec.Command(cliExe, "-f", "plaintext", "-o", "-")
	var stdout, stderr bytes.Buffer
	cmd.Stdout = &stdout
	cmd.Stderr = &stderr

	err = cmd.Run()
	if err != nil {
		var exitErr *exec.ExitError
		if errors.As(err, &exitErr) {
			logger.Warn("LoadMMKVOrDefault: qmpc-mmkv-cli exited with non-zero status",
				zap.String("exe", cliExe),
				zap.Int("exit_code", exitErr.ExitCode()),
				zap.String("stderr", stderr.String()),
			)
		} else {
			logger.Warn("LoadMMKVOrDefault: failed to run qmpc-mmkv-cli",
				zap.String("exe", cliExe),
				zap.Error(err),
				zap.String("stderr", stderr.String()),
			)
		}
		return nil, nil
	}

	result = parseQmpcMMKVCliOutput(&stdout, logger)
	logger.Debug("Keys loaded from qmpc-mmkv-cli", zap.Int("len", len(result)))
	return result, nil
}