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package pflag
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import (
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	"fmt"
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	"strconv"
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	"strings"
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)
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// -- int64Slice Value
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type int64SliceValue struct {
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	value   *[]int64
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	changed bool
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}
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func newInt64SliceValue(val []int64, p *[]int64) *int64SliceValue {
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	isv := new(int64SliceValue)
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	isv.value = p
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	*isv.value = val
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	return isv
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}
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func (s *int64SliceValue) Set(val string) error {
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	ss := strings.Split(val, ",")
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	out := make([]int64, len(ss))
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	for i, d := range ss {
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		var err error
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		out[i], err = strconv.ParseInt(d, 0, 64)
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		if err != nil {
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			return err
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		}
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	}
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	if !s.changed {
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		*s.value = out
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	} else {
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		*s.value = append(*s.value, out...)
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	}
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	s.changed = true
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	return nil
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}
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func (s *int64SliceValue) Type() string {
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	return "int64Slice"
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}
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func (s *int64SliceValue) String() string {
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	out := make([]string, len(*s.value))
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	for i, d := range *s.value {
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		out[i] = fmt.Sprintf("%d", d)
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	}
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	return "[" + strings.Join(out, ",") + "]"
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}
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func (s *int64SliceValue) fromString(val string) (int64, error) {
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	return strconv.ParseInt(val, 0, 64)
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}
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func (s *int64SliceValue) toString(val int64) string {
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	return fmt.Sprintf("%d", val)
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}
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func (s *int64SliceValue) Append(val string) error {
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	i, err := s.fromString(val)
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	if err != nil {
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		return err
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	}
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	*s.value = append(*s.value, i)
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	return nil
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}
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func (s *int64SliceValue) Replace(val []string) error {
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	out := make([]int64, len(val))
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	for i, d := range val {
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		var err error
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		out[i], err = s.fromString(d)
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		if err != nil {
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			return err
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		}
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	}
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	*s.value = out
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	return nil
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}
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func (s *int64SliceValue) GetSlice() []string {
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	out := make([]string, len(*s.value))
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	for i, d := range *s.value {
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		out[i] = s.toString(d)
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	}
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	return out
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}
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func int64SliceConv(val string) (interface{}, error) {
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	val = strings.Trim(val, "[]")
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	// Empty string would cause a slice with one (empty) entry
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	if len(val) == 0 {
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		return []int64{}, nil
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	}
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	ss := strings.Split(val, ",")
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	out := make([]int64, len(ss))
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	for i, d := range ss {
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		var err error
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		out[i], err = strconv.ParseInt(d, 0, 64)
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		if err != nil {
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			return nil, err
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		}
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	}
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	return out, nil
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}
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// GetInt64Slice return the []int64 value of a flag with the given name
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func (f *FlagSet) GetInt64Slice(name string) ([]int64, error) {
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	val, err := f.getFlagType(name, "int64Slice", int64SliceConv)
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	if err != nil {
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		return []int64{}, err
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	}
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	return val.([]int64), nil
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}
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// Int64SliceVar defines a int64Slice flag with specified name, default value, and usage string.
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// The argument p points to a []int64 variable in which to store the value of the flag.
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func (f *FlagSet) Int64SliceVar(p *[]int64, name string, value []int64, usage string) {
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	f.VarP(newInt64SliceValue(value, p), name, "", usage)
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}
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// Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) {
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	f.VarP(newInt64SliceValue(value, p), name, shorthand, usage)
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}
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// Int64SliceVar defines a int64[] flag with specified name, default value, and usage string.
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// The argument p points to a int64[] variable in which to store the value of the flag.
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func Int64SliceVar(p *[]int64, name string, value []int64, usage string) {
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	CommandLine.VarP(newInt64SliceValue(value, p), name, "", usage)
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}
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// Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash.
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func Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) {
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	CommandLine.VarP(newInt64SliceValue(value, p), name, shorthand, usage)
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}
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// Int64Slice defines a []int64 flag with specified name, default value, and usage string.
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// The return value is the address of a []int64 variable that stores the value of the flag.
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func (f *FlagSet) Int64Slice(name string, value []int64, usage string) *[]int64 {
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	p := []int64{}
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	f.Int64SliceVarP(&p, name, "", value, usage)
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	return &p
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}
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// Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 {
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	p := []int64{}
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	f.Int64SliceVarP(&p, name, shorthand, value, usage)
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	return &p
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}
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// Int64Slice defines a []int64 flag with specified name, default value, and usage string.
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// The return value is the address of a []int64 variable that stores the value of the flag.
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func Int64Slice(name string, value []int64, usage string) *[]int64 {
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	return CommandLine.Int64SliceP(name, "", value, usage)
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}
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// Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash.
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func Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 {
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	return CommandLine.Int64SliceP(name, shorthand, value, usage)
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}
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