package checknameavailability

import (
	"encoding/json"
	"fmt"
	"strings"
)

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See NOTICE.txt in the project root for license information.

type CheckNameAvailabilityReason string

const (
	CheckNameAvailabilityReasonAlreadyExists CheckNameAvailabilityReason = "AlreadyExists"
	CheckNameAvailabilityReasonInvalid       CheckNameAvailabilityReason = "Invalid"
)

func PossibleValuesForCheckNameAvailabilityReason() []string {
	return []string{
		string(CheckNameAvailabilityReasonAlreadyExists),
		string(CheckNameAvailabilityReasonInvalid),
	}
}

func (s *CheckNameAvailabilityReason) UnmarshalJSON(bytes []byte) error {
	var decoded string
	if err := json.Unmarshal(bytes, &decoded); err != nil {
		return fmt.Errorf("unmarshaling: %+v", err)
	}
	out, err := parseCheckNameAvailabilityReason(decoded)
	if err != nil {
		return fmt.Errorf("parsing %q: %+v", decoded, err)
	}
	*s = *out
	return nil
}

func parseCheckNameAvailabilityReason(input string) (*CheckNameAvailabilityReason, error) {
	vals := map[string]CheckNameAvailabilityReason{
		"alreadyexists": CheckNameAvailabilityReasonAlreadyExists,
		"invalid":       CheckNameAvailabilityReasonInvalid,
	}
	if v, ok := vals[strings.ToLower(input)]; ok {
		return &v, nil
	}

	// otherwise presume it's an undefined value and best-effort it
	out := CheckNameAvailabilityReason(input)
	return &out, nil
}
