resolve.go

/*
Copyright 2023 Alexandre Mahdhaoui

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package vib

import (
	"fmt"
	"github.com/alexandremahdhaoui/vib/apis"
	"github.com/alexandremahdhaoui/vib/apis/v1alpha1"
	"github.com/alexandremahdhaoui/vib/pkg/api"
	"os/exec"
	"strings"
)

// Render
// TODO: Figure out how to use the key and values when rendering an Exec command.
func ResolveExec(resolver *v1alpha1.ResolverSpec, key, value string) (string, error) {
	cmd := exec.Command(resolver.Exec.Command, resolver.Exec.Args...)
	cmd.Stdin = strings.NewReader(resolver.Exec.Stdin)

	out, err := cmd.Output()
	if err != nil {
		return "", err
	}

	panic("use of keys & values is not implemented yet")
	return string(out), nil
}

func ResolveFmt(resolver *v1alpha1.ResolverSpec, key, value string) (string, error) {
	args := make([]any, 0)
	for _, fmtArg := range resolver.Fmt.FmtArguments {
		var arg string
		if fmtArg == v1alpha1.KeyFmtArgument {
			arg = key
		} else {
			arg = value
		}
		args = append(args, arg)
	}
	return fmt.Sprintf(resolver.Fmt.Template, args...), nil
}

// ResolvePlain returns the key
func ResolvePlain(_ *v1alpha1.ResolverSpec, key, _ string) (string, error) {
	return key, nil
}

func ResolveGotemplate(resolver *v1alpha1.ResolverSpec, key, value string) (string, error) {
	// TODO: Implement Me!
	panic("not implemented yet")
}

//----------------------------------------------------------------------------------------------------------------------
// DefaultResolver
//----------------------------------------------------------------------------------------------------------------------

func DefaultResolver(apiVersion api.APIVersion) ([]*api.ResourceDefinition, error) {
	switch apiVersion {
	case apis.V1Alpha1:
	default:

	}

	results := make([]*api.ResourceDefinition, 0)
	for _, f := range []func() (*api.ResourceDefinition, error){
		v1alpha1.PlainResolver,
		v1alpha1.FunctionResolver,
		v1alpha1.AliasResolver,
		v1alpha1.EnvironmentResolver,
		v1alpha1.ExportedEnvironmentResolver,
	} {
		resource, err := f()
		if err != nil {
			return nil, err
		}

		results = append(results, resource)
	}
	return results, nil
}