package main

import (
	"flag"
	"io"
	"log"
	"net/http"
	"time"
)

type Link struct {
	Href string
	Text string
}

func main() {
	// Logging configuration.
	log.SetFlags(log.LstdFlags | log.Lshortfile)

	// CLI flag configuration.
	rawURL := flag.String("url", "", "Web address of target HTML")
	timeoutSecs := flag.Int("timeout", 2, "Number of seconds after which to time out")

	if *rawURL == "" {
		log.Fatal("Missing -url")
	}

	// Configure the request.
	timeout := time.Duration(*timeoutSecs) * time.Second
	client := http.Client{
		Timeout: timeout,
	}

	req, err := http.NewRequest(http.MethodGet, *rawURL, nil)
	if err != nil {
		log.Fatal(err)
	}

	// Perform the request.
	resp, err := client.Do(req)
	if err != nil {
		log.Fatal(err)
	}
	defer resp.Body.Close()

	links, err := findLinks(resp.Body)
	if err != nil {
		log.Fatal(err)
	}

	_ = links
}

// findLinks consumes the given reader, scraping it of anchor
// tags. Each anchor tag is "unmarshalled" into a [Link]. The
// resulting slice of Links is returned, along with an error.
func findLinks(_ io.Reader) ([]Link, error) {
	return nil, nil
}