// Package config reads edge node configuration files.
package config

import (
	"errors"
	"fmt"
	"os"

	"gopkg.in/yaml.v3"
)

// ErrConfigNotFound is returned when the edgecore config file does not
// exist.
var ErrConfigNotFound = errors.New("edgecore config not found")

// ReportEvent reads edged.reportEvent from the edgecore.yaml at the given
// path. It returns the value, whether the key was present, and an error.
func ReportEvent(path string) (bool, bool, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		if os.IsNotExist(err) {
			return false, false, fmt.Errorf("%w: %s", ErrConfigNotFound, path)
		}
		return false, false, err
	}
	var tree map[string]interface{}
	if err := yaml.Unmarshal(data, &tree); err != nil {
		return false, false, fmt.Errorf("parse %s: %w", path, err)
	}
	edged, ok := tree["edged"].(map[string]interface{})
	if !ok {
		return false, false, nil
	}
	value, ok := edged["reportEvent"]
	if !ok {
		return false, false, nil
	}
	report, ok := value.(bool)
	if !ok {
		return false, true, fmt.Errorf("edged.reportEvent is not a boolean in %s: %v", path, value)
	}
	return report, true, nil
}