package schedule

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 ProvisioningState string

const (
	ProvisioningStateCreating  ProvisioningState = "Creating"
	ProvisioningStateDeleting  ProvisioningState = "Deleting"
	ProvisioningStateFailed    ProvisioningState = "Failed"
	ProvisioningStateLocked    ProvisioningState = "Locked"
	ProvisioningStateSucceeded ProvisioningState = "Succeeded"
	ProvisioningStateUpdating  ProvisioningState = "Updating"
)

func PossibleValuesForProvisioningState() []string {
	return []string{
		string(ProvisioningStateCreating),
		string(ProvisioningStateDeleting),
		string(ProvisioningStateFailed),
		string(ProvisioningStateLocked),
		string(ProvisioningStateSucceeded),
		string(ProvisioningStateUpdating),
	}
}

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

func parseProvisioningState(input string) (*ProvisioningState, error) {
	vals := map[string]ProvisioningState{
		"creating":  ProvisioningStateCreating,
		"deleting":  ProvisioningStateDeleting,
		"failed":    ProvisioningStateFailed,
		"locked":    ProvisioningStateLocked,
		"succeeded": ProvisioningStateSucceeded,
		"updating":  ProvisioningStateUpdating,
	}
	if v, ok := vals[strings.ToLower(input)]; ok {
		return &v, nil
	}

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

type RecurrenceFrequency string

const (
	RecurrenceFrequencyDaily  RecurrenceFrequency = "Daily"
	RecurrenceFrequencyWeekly RecurrenceFrequency = "Weekly"
)

func PossibleValuesForRecurrenceFrequency() []string {
	return []string{
		string(RecurrenceFrequencyDaily),
		string(RecurrenceFrequencyWeekly),
	}
}

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

func parseRecurrenceFrequency(input string) (*RecurrenceFrequency, error) {
	vals := map[string]RecurrenceFrequency{
		"daily":  RecurrenceFrequencyDaily,
		"weekly": RecurrenceFrequencyWeekly,
	}
	if v, ok := vals[strings.ToLower(input)]; ok {
		return &v, nil
	}

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

type WeekDay string

const (
	WeekDayFriday    WeekDay = "Friday"
	WeekDayMonday    WeekDay = "Monday"
	WeekDaySaturday  WeekDay = "Saturday"
	WeekDaySunday    WeekDay = "Sunday"
	WeekDayThursday  WeekDay = "Thursday"
	WeekDayTuesday   WeekDay = "Tuesday"
	WeekDayWednesday WeekDay = "Wednesday"
)

func PossibleValuesForWeekDay() []string {
	return []string{
		string(WeekDayFriday),
		string(WeekDayMonday),
		string(WeekDaySaturday),
		string(WeekDaySunday),
		string(WeekDayThursday),
		string(WeekDayTuesday),
		string(WeekDayWednesday),
	}
}

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

func parseWeekDay(input string) (*WeekDay, error) {
	vals := map[string]WeekDay{
		"friday":    WeekDayFriday,
		"monday":    WeekDayMonday,
		"saturday":  WeekDaySaturday,
		"sunday":    WeekDaySunday,
		"thursday":  WeekDayThursday,
		"tuesday":   WeekDayTuesday,
		"wednesday": WeekDayWednesday,
	}
	if v, ok := vals[strings.ToLower(input)]; ok {
		return &v, nil
	}

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