package util

import (
	"bytes"
	"context"
	"encoding/json"
	"net/http"
	"sync"
)

type HttpClient struct {
	client *http.Client
	once   sync.Once
}

func NewHttpClient() *HttpClient {
	return &HttpClient{
		http.DefaultClient,
		sync.Once{},
	}
}

func (h *HttpClient) getClient() *http.Client {
	h.once.Do(func() {
		h.client = &http.Client{}
	})
	return h.client
}

func (h *HttpClient) HttpRequest(ctx context.Context, method, url string, body interface{}, headers map[string]string) (*http.Response, error) {
	payload, err := json.Marshal(body)
	if err != nil {
		return nil, err
	}

	req, err := http.NewRequestWithContext(ctx, method, url, bytes.NewBuffer(payload))
	if err != nil {
		return nil, err
	}

	for headerTitle, headerValue := range headers {
		req.Header.Set(headerTitle, headerValue)
	}

	resp, err := h.getClient().Do(req)
	if err != nil {
		return nil, err
	}

	defer resp.Body.Close()

	return &http.Response{
		Status:     "200 ok",
		StatusCode: 200,
		Body:       resp.Body,
	}, nil
}