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package pflag
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import (
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	"io"
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	"strconv"
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	"strings"
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)
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// -- boolSlice Value
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type boolSliceValue struct {
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	value   *[]bool
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	changed bool
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}
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func newBoolSliceValue(val []bool, p *[]bool) *boolSliceValue {
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	bsv := new(boolSliceValue)
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	bsv.value = p
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	*bsv.value = val
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	return bsv
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}
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// Set converts, and assigns, the comma-separated boolean argument string representation as the []bool value of this flag.
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// If Set is called on a flag that already has a []bool assigned, the newly converted values will be appended.
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func (s *boolSliceValue) Set(val string) error {
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	// remove all quote characters
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	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
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	// read flag arguments with CSV parser
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	boolStrSlice, err := readAsCSV(rmQuote.Replace(val))
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	if err != nil && err != io.EOF {
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		return err
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	}
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	// parse boolean values into slice
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	out := make([]bool, 0, len(boolStrSlice))
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	for _, boolStr := range boolStrSlice {
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		b, err := strconv.ParseBool(strings.TrimSpace(boolStr))
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		if err != nil {
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			return err
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		}
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		out = append(out, b)
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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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// Type returns a string that uniquely represents this flag's type.
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func (s *boolSliceValue) Type() string {
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	return "boolSlice"
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}
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// String defines a "native" format for this boolean slice flag value.
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func (s *boolSliceValue) String() string {
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	boolStrSlice := make([]string, len(*s.value))
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	for i, b := range *s.value {
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		boolStrSlice[i] = strconv.FormatBool(b)
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	}
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	out, _ := writeAsCSV(boolStrSlice)
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	return "[" + out + "]"
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}
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func (s *boolSliceValue) fromString(val string) (bool, error) {
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	return strconv.ParseBool(val)
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}
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func (s *boolSliceValue) toString(val bool) string {
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	return strconv.FormatBool(val)
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}
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func (s *boolSliceValue) 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 *boolSliceValue) Replace(val []string) error {
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	out := make([]bool, 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 *boolSliceValue) 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 boolSliceConv(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 []bool{}, nil
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	}
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	ss := strings.Split(val, ",")
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	out := make([]bool, len(ss))
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	for i, t := range ss {
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		var err error
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		out[i], err = strconv.ParseBool(t)
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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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// GetBoolSlice returns the []bool value of a flag with the given name.
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func (f *FlagSet) GetBoolSlice(name string) ([]bool, error) {
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	val, err := f.getFlagType(name, "boolSlice", boolSliceConv)
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	if err != nil {
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		return []bool{}, err
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	}
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	return val.([]bool), nil
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}
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// BoolSliceVar defines a boolSlice flag with specified name, default value, and usage string.
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// The argument p points to a []bool variable in which to store the value of the flag.
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func (f *FlagSet) BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
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	f.VarP(newBoolSliceValue(value, p), name, "", usage)
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}
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// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
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	f.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
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}
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// BoolSliceVar defines a []bool flag with specified name, default value, and usage string.
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// The argument p points to a []bool variable in which to store the value of the flag.
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func BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
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	CommandLine.VarP(newBoolSliceValue(value, p), name, "", usage)
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}
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// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
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func BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
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	CommandLine.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
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}
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// BoolSlice defines a []bool flag with specified name, default value, and usage string.
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// The return value is the address of a []bool variable that stores the value of the flag.
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func (f *FlagSet) BoolSlice(name string, value []bool, usage string) *[]bool {
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	p := []bool{}
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	f.BoolSliceVarP(&p, name, "", value, usage)
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	return &p
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}
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// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
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	p := []bool{}
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	f.BoolSliceVarP(&p, name, shorthand, value, usage)
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	return &p
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}
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// BoolSlice defines a []bool flag with specified name, default value, and usage string.
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// The return value is the address of a []bool variable that stores the value of the flag.
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func BoolSlice(name string, value []bool, usage string) *[]bool {
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	return CommandLine.BoolSliceP(name, "", value, usage)
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}
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// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
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func BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
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	return CommandLine.BoolSliceP(name, shorthand, value, usage)
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}
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