package api

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

type HttpClient struct {
	userAgent string
}

func NewHttpClient() *HttpClient {
	return &HttpClient{userAgent: "internal-http-client"}
}

func (c *HttpClient) SendGet(api, url string, data, out any) error {
	res, err := c.sendRequest(api, url, http.MethodGet, data)
	if err != nil {
		return err
	}

	decoder := json.NewDecoder(res.Body)
	err = decoder.Decode(&out)
	if err != nil {
		return err
	}

	return nil
}

func (c *HttpClient) SendPost(api, url string, data, out any) (any, error) {
	res, err := c.sendRequest(api, url, http.MethodPost, data)
	if err != nil {
		return nil, err
	}

	decoder := json.NewDecoder(res.Body)
	err = decoder.Decode(out)
	if err != nil {
		return nil, err
	}

	return out, nil
}

func (c *HttpClient) sendRequest(api, url, method string, data any) (*http.Response, error) {
	apiUrl := api + url // FIXME
	client := &http.Client{}

	json, err := json.Marshal(&data)
	if err != nil {
		return nil, err
	}

	req, err := http.NewRequest(method, apiUrl, bytes.NewBuffer(json))
	if err != nil {
		return nil, err
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("User-Agent", c.ua)
	res, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	// defer res.Body.Close()

	return res, nil
}