/*
Copyright (c) Edgeless Systems GmbH

SPDX-License-Identifier: AGPL-3.0-only
*/

/*
Package helm provides a higher level interface to the Helm GO SDK.

It is used by the CLI to:
- load embedded charts
- install charts
- update helm releases
- get versions for installed helm releases
- create local backups before running service upgrades
*/
package helm

// mergeMaps returns a new map that is the merger of it's inputs.
// Key collisions are resolved by taking the value of the second argument (map b).
// Taken from: https://github.com/helm/helm/blob/dbc6d8e20fe1d58d50e6ed30f09a04a77e4c68db/pkg/cli/values/options.go#L91-L108.
func mergeMaps(a, b map[string]any) map[string]any {
	out := make(map[string]any, len(a))
	for k, v := range a {
		out[k] = v
	}
	for k, v := range b {
		if v, ok := v.(map[string]any); ok {
			if bv, ok := out[k]; ok {
				if bv, ok := bv.(map[string]any); ok {
					out[k] = mergeMaps(bv, v)
					continue
				}
			}
		}
		out[k] = v
	}
	return out
}