// Yet another command-line client for SimplyTranslate
// All Rites Reversed (ĸ) 3188 Aoi Koizumi, Czar of KST, mutefall, shokara, Baobab

package main

import (
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
)

var (
	instanceURL string
	engine      string
	fromLang    string
	toLang      string
	text        string
)

type TranslateAPI struct {
	OutText string `json:"translated-text"`
}

func init() {
	flag.StringVar(&instanceURL, "i", "https://translate.bus-hit.me/api/translate/", "Instance for SimplyTranslate (default: https://translate.bus-hit.me)")
	flag.StringVar(&engine, "e", "google", "Translation engine (default: google)")
	flag.StringVar(&fromLang, "f", "auto", "Source language (default: auto)")
	flag.StringVar(&toLang, "t", "", "Target language (default: unset)")
	flag.StringVar(&text, "T", "", "Text to translate (default: unset)")
}
func main() {
	flag.Parse()

	if len(text) == 0 {
		log.Printf("Text to translate is required. \n")
		os.Exit(1)
	} else if len(toLang) == 0 {
		log.Printf("Target language is missing. \n")
		os.Exit(1)
	}

	var queryURL = instanceURL + "?engine=" + engine + "&from=" + fromLang + "&to=" + toLang + "&text=" + text

	req, err1 := http.Get(queryURL)
	var o TranslateAPI

	if err1 != nil {
		log.Printf("Couldn't process request %s\n", err1)
	}

	defer req.Body.Close()
	resp, err2 := io.ReadAll(req.Body)

	if err2 != nil {
		log.Printf("Couldn't process response %s\n", err2)
	}

	_ = json.Unmarshal([]byte(resp), &o)

	fmt.Printf("Input: %s (%s)\n",text,fromLang)
	fmt.Printf("Output: %s (%s)\n",o.OutText,toLang)
}