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https://github.com/antham/strumt

Strumt is a library to create prompt chain
https://github.com/antham/strumt

prompt prompt-chain

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Strumt is a library to create prompt chain

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# Strumt [![codecov](https://codecov.io/gh/antham/strumt/branch/master/graph/badge.svg)](https://codecov.io/gh/antham/strumt) [![Go Report Card](https://goreportcard.com/badge/github.com/antham/strumt)](https://goreportcard.com/report/github.com/antham/strumt) [![GoDoc](https://godoc.org/github.com/antham/strumt?status.svg)](http://godoc.org/github.com/antham/strumt) [![GitHub tag](https://img.shields.io/github/tag/antham/strumt.svg)]()

Strumt is a library to create prompt chain. It provides multiline prompt, input validation, retry on error, ability to create typesafe prompt, ability to customize prompt and error display, a recording of prompt session and the ability to easily test your prompt scenario.

## Example

Checkout godoc to have more examples : [https://godoc.org/github.com/antham/strumt](https://godoc.org/github.com/antham/strumt)

---

[![asciicast](https://asciinema.org/a/126121.png)](https://asciinema.org/a/126121)

```go
package main

import (
"bufio"
"fmt"
"os"
"strconv"

"github.com/antham/strumt"
)

func main() {
user := User{}

p := strumt.NewPromptsFromReaderAndWriter(bufio.NewReader(os.Stdin), os.Stdout)
p.AddLinePrompter(&StringPrompt{&user.FirstName, "Enter your first name", "userName", "lastName", "userName"})
p.AddLinePrompter(&StringPrompt{&user.LastName, "Enter your last name", "lastName", "age", "lastName"})
p.AddLinePrompter(&IntPrompt{&user.Age, "Enter your age", "age", "", "age"})
p.SetFirst("userName")
p.Run()

for _, step := range p.Scenario() {
fmt.Println(step.PromptString())
fmt.Println(step.Inputs()[0])

if step.Error() != nil {
fmt.Println(step.Error())
}
}

fmt.Println()
fmt.Printf("User datas : %#v", user)

}

type StringPrompt struct {
store *string
prompt string
currentID string
nextPrompt string
nextPromptOnError string
}

func (s *StringPrompt) ID() string {
return s.currentID
}

func (s *StringPrompt) PromptString() string {
return s.prompt
}

func (s *StringPrompt) Parse(value string) error {
if value == "" {
return fmt.Errorf("Empty value given")
}

*(s.store) = value

return nil
}

func (s *StringPrompt) NextOnSuccess(value string) string {
return s.nextPrompt
}

func (s *StringPrompt) NextOnError(err error) string {
return s.nextPromptOnError
}

type IntPrompt struct {
store *int
prompt string
currentID string
nextPrompt string
nextPromptOnError string
}

func (i *IntPrompt) ID() string {
return i.currentID
}

func (i *IntPrompt) PromptString() string {
return i.prompt
}

func (i *IntPrompt) Parse(value string) error {
age, err := strconv.Atoi(value)

if err != nil {
return fmt.Errorf("%s is not a valid number", value)
}

if age <= 0 {
return fmt.Errorf("Give a valid age")
}

*(i.store) = age

return nil
}

func (i *IntPrompt) NextOnSuccess(value string) string {
return i.nextPrompt
}

func (i *IntPrompt) NextOnError(err error) string {
return i.nextPromptOnError
}

type User struct {
FirstName string
LastName string
Age int
}
```