// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

package addrs

import (
	"fmt"
)

// LocalValue is the address of a local value.
type LocalValue struct {
	referenceable
	Name string
}

func (v LocalValue) String() string {
	return "local." + v.Name
}

func (v LocalValue) UniqueKey() UniqueKey {
	return v // A LocalValue is its own UniqueKey
}

func (v LocalValue) uniqueKeySigil() {}

// Absolute converts the receiver into an absolute address within the given
// module instance.
func (v LocalValue) Absolute(m ModuleInstance) AbsLocalValue {
	return AbsLocalValue{
		Module:     m,
		LocalValue: v,
	}
}

// AbsLocalValue is the absolute address of a local value within a module instance.
type AbsLocalValue struct {
	Module     ModuleInstance
	LocalValue LocalValue
}

// LocalValue returns the absolute address of a local value of the given
// name within the receiving module instance.
func (m ModuleInstance) LocalValue(name string) AbsLocalValue {
	return AbsLocalValue{
		Module: m,
		LocalValue: LocalValue{
			Name: name,
		},
	}
}

func (v AbsLocalValue) String() string {
	if len(v.Module) == 0 {
		return v.LocalValue.String()
	}
	return fmt.Sprintf("%s.%s", v.Module.String(), v.LocalValue.String())
}

func (v AbsLocalValue) UniqueKey() UniqueKey {
	return absLocalValueKey{
		moduleKey: v.Module.UniqueKey(),
		valueKey:  v.LocalValue.UniqueKey(),
	}
}

type absLocalValueKey struct {
	moduleKey UniqueKey
	valueKey  UniqueKey
}

// uniqueKeySigil implements UniqueKey.
func (absLocalValueKey) uniqueKeySigil() {}