github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/cli/util/prompt/prompt.go (about)

     1  /*
     2  Copyright (C) 2022-2023 ApeCloud Co., Ltd
     3  
     4  This file is part of KubeBlocks project
     5  
     6  This program is free software: you can redistribute it and/or modify
     7  it under the terms of the GNU Affero General Public License as published by
     8  the Free Software Foundation, either version 3 of the License, or
     9  (at your option) any later version.
    10  
    11  This program is distributed in the hope that it will be useful
    12  but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  GNU Affero General Public License for more details.
    15  
    16  You should have received a copy of the GNU Affero General Public License
    17  along with this program.  If not, see <http://www.gnu.org/licenses/>.
    18  */
    19  
    20  package prompt
    21  
    22  import (
    23  	"fmt"
    24  	"io"
    25  	"sort"
    26  	"strings"
    27  
    28  	"github.com/manifoldco/promptui"
    29  	"golang.org/x/exp/slices"
    30  )
    31  
    32  func NewPrompt(label string, validate promptui.ValidateFunc, in io.Reader) *promptui.Prompt {
    33  	template := &promptui.PromptTemplates{
    34  		Prompt:  "{{ . }} ",
    35  		Valid:   "{{ . | green }} ",
    36  		Invalid: "{{ . | red }} ",
    37  		Success: "{{ . | bold }} ",
    38  	}
    39  
    40  	if validate == nil {
    41  		template = &promptui.PromptTemplates{
    42  			Prompt:  "{{ . }} ",
    43  			Valid:   "{{ . | red }} ",
    44  			Invalid: "{{ . | red }} ",
    45  			Success: "{{ . | bold }} ",
    46  		}
    47  	}
    48  	p := promptui.Prompt{
    49  		Label:     label,
    50  		Stdin:     io.NopCloser(in),
    51  		Templates: template,
    52  		Validate:  validate,
    53  	}
    54  	return &p
    55  }
    56  
    57  // Confirm let user double-check for the cluster ops
    58  // use customMessage to display more information
    59  // when names are empty, require validation for 'yes'.
    60  func Confirm(names []string, in io.Reader, customMessage string, prompt string) error {
    61  	if len(names) == 0 {
    62  		names = []string{"yes"}
    63  	}
    64  	if len(customMessage) != 0 {
    65  		fmt.Println(customMessage)
    66  	}
    67  	if prompt == "" {
    68  		prompt = "Please type the name again(separate with white space when more than one):"
    69  	}
    70  	_, err := NewPrompt(prompt,
    71  		func(entered string) error {
    72  			if len(names) == 1 && names[0] == "yes" {
    73  				entered = strings.ToLower(entered)
    74  			}
    75  			enteredNames := strings.Split(entered, " ")
    76  			sort.Strings(names)
    77  			sort.Strings(enteredNames)
    78  			if !slices.Equal(names, enteredNames) {
    79  				return fmt.Errorf("typed \"%s\" does not match \"%s\"", entered, strings.Join(names, " "))
    80  			}
    81  			return nil
    82  		}, in).Run()
    83  	return err
    84  }