package internal

import (
	log "github.com/sirupsen/logrus"
)

type Crawler interface {
	Start()
	Crawl(url string) error
}

type crawler struct {
	q chan string
}

func NewCrawler() (Crawler, error) {
	return &crawler{q: make(chan string)}, nil
}

func (c *crawler) loop() {
	for {
		url := <-c.q
		log.Debugf("crawling %s", url)
	}
}

func (c *crawler) Crawl(url string) error {
	c.q <- url
	return nil
}

func (c *crawler) Start() {
	go c.loop()
}