Create Vocabulary English CLI Application with Golang

Aplikasi yang diharapkan adalah menampilkan word in english secara random bersama meaning dan examplenya setiap membuka Command Line
Tujuan atau manfaat: Memperkaya kosakata bahasa English

Dependencies

1. Framework CLI golang : github.com/urfave/cli/v2
2. API Dictionary : https://api.dictionaryapi.dev/api/v2/entries/en/
3. List English word : https://github.com/bitcoinjs/bip39/blob/master/src/wordlists/english.json
4. Coloring text on Terminal : github.com/fatih/color

Struktur Folder

/vocabulary
├── go.mod
├── go.sum
├── vocabulary.go
└── word.json

package main

import (
  _ "embed"
  "encoding/json"
  "fmt"
  "github.com/fatih/color"
  "io/ioutil"
  "log"
  "math/rand"
  "net/http"
  "os"
  "strings"
  "time"

  "github.com/urfave/cli/v2"
)

// ResponseDictionary converted by https://mholt.github.io/json-to-go/
type ResponseDictionary []struct {
  Word       string      `json:"word"`
  Phonetic   string      `json:"phonetic"`
  Phonetics  []Phonetics `json:"phonetics"`
  Meanings   []Meanings  `json:"meanings"`
  License    License     `json:"license"`
  SourceUrls []string    `json:"sourceUrls"`
}
type License struct {
  Name string `json:"name"`
  URL  string `json:"url"`
}
type Phonetics struct {
  Text      string  `json:"text"`
  Audio     string  `json:"audio"`
  SourceURL string  `json:"sourceUrl,omitempty"`
  License   License `json:"license,omitempty"`
}
type Definitions struct {
  Definition string        `json:"definition"`
  Synonyms   []interface{} `json:"synonyms"`
  Antonyms   []interface{} `json:"antonyms"`
  Example    string        `json:"example,omitempty"`
}
type Meanings struct {
  PartOfSpeech string        `json:"partOfSpeech"`
  Definitions  []Definitions `json:"definitions"`
  Synonyms     []interface{} `json:"synonyms"`
  Antonyms     []interface{} `json:"antonyms"`
}

type Word []string

//go:embed word.json
var wordJson []byte

func main() {
  app := &cli.App{
    Name: "vocabulary",
    Usage: "get a word today",
    Action: func(c *cli.Context) error {

      var word Word
      err := json.Unmarshal(wordJson, &word)
      if err != nil {
        return nil
      }

      rand.Seed(time.Now().UnixNano())
      min := 0
      max := len(word)
      randomNumber := rand.Intn(max - min + 1) + min
      wordToday := word[randomNumber]
      URIBuilt := fmt.Sprintf("https://api.dictionaryapi.dev/api/v2/entries/en/%v", wordToday)
      response, err := http.Get(URIBuilt)

      if err != nil {
        fmt.Print(err.Error())
        os.Exit(1)
      }

      responseData, err := ioutil.ReadAll(response.Body)

      var responseDictionary ResponseDictionary
      err = json.Unmarshal(responseData, &responseDictionary)
      if err != nil {
        log.Fatal(err)
      }
      color.Set(color.FgYellow)
      fmt.Println("Word:",strings.ToTitle(strings.ToLower(responseDictionary[0].Word)))
      color.Unset()
      fmt.Println("Meaning:", responseDictionary[0].Meanings[0].Definitions[0].Definition)

      if responseDictionary[0].Meanings[0].Definitions[0].Example  != "" {
        fmt.Println("Example:", responseDictionary[0].Meanings[0].Definitions[0].Example)
      }
      return nil
    },
  }

  err := app.Run(os.Args)
  if err != nil {
    log.Fatal(err)
  }
}

cd vocabulary
go install
go build
Biar setiap buka Comman Line otomatis jalanin aplikasi golang, buka menu preferences di terminal ZSH, isi Login Shell dengan lokasi executed golang application

 

Source code on GitHub: https://github.com/myusufid/vocabulary-cli-golang