package app

import (
	"encoding/json"
	"fmt"
)

func decodeMonitoringTaskResultEnvelope(payload []byte) (*monitoringTaskResultEnvelope, error) {
	if len(payload) == 0 {
		return nil, fmt.Errorf("monitoring task result payload is empty")
	}

	var envelope monitoringTaskResultEnvelope
	if err := json.Unmarshal(payload, &envelope); err != nil {
		return nil, err
	}
	if envelope.TaskID <= 0 {
		return nil, fmt.Errorf("monitoring task result payload missing task_id")
	}

	return &envelope, nil
}