package fetch

import (
	"fmt"
	"io"
	"net/http"
	"time"
)

// Fetch makes a GET request to rawURL, returning the HTML contents of
// that webpage as a []byte. An error is also returned. The parameter
// timeoutSecs is passed directly to the [http.Client.Timeout] field
// of the client making the request.
func Fetch(rawURL string, timeoutSecs int) ([]byte, error) {
	client := http.Client{
		Timeout: time.Duration(timeoutSecs) * time.Second,
	}

	req, err := http.NewRequest(http.MethodGet, rawURL, nil)
	if err != nil {
		return nil, fmt.Errorf("can't create %s request for %s", http.MethodGet, rawURL)
	}

	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("client failed to perform %s request for %s", http.MethodGet, rawURL)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("status for %s for %s: %s", http.MethodGet, rawURL, resp.Status)
	}

	htmlBytes, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("can't dump response body into byte slice")
	}

	return htmlBytes, nil
}