package common

import (
	"encoding/json"
	"errors"
	"fmt"
	"github.com/IBM/sarama"
	"io"
	"log"
	"net/http"
)

type YaHuRes struct {
	Rate float64
}

func GetExchangeRate(nowCurrency, targetCurrency string) (float64, error) {

	res, err := http.Get("http://www.google.com?now=" + nowCurrency + "&targetCurrency=" + targetCurrency)

	if err != nil {
		return 0, err
	}

	body, err := io.ReadAll(res.Body)
	res.Body.Close()

	if res.StatusCode != 200 {
		log.Fatalf("Response failed with status code: %d and\nbody: %s\n", res.StatusCode, body)
		return 0, errors.New(fmt.Sprintf("Response failed with status code: %d and\nbody: %s\n", res.StatusCode, body))
	}
	if err != nil {
		return 0, err
	}

	var yahuRes YaHuRes
	err = json.Unmarshal(body, &yahuRes)

	if err != nil {
		return 0, err
	}

	return yahuRes.Rate, err

}

func SendKafka(key string, info string) error {
	config := sarama.NewConfig()
	config.Producer.RequiredAcks = sarama.WaitForAll
	config.Producer.Retry.Max = 5
	config.Producer.Return.Successes = true

	producer, err := sarama.NewSyncProducer([]string{"localhost:9092"}, config)
	if err != nil {
		fmt.Println("Failed to create producer:", err)
		return err
	}

	defer producer.Close()

	message := &sarama.ProducerMessage{
		Topic: key,
		Value: sarama.StringEncoder(info),
	}
	_, _, err = producer.SendMessage(message)
	return err
}