package http

import (
	"strings"
)

var (
	CRLF = []byte("\r\n")
	SP   = []byte(" ")
)

type Client struct {
	DNS       DNS
	Transport RoundTripper
}

func (c *Client) Do(method string, url string, headers []Header) (*Response, error) {
	url = strings.TrimPrefix(url, "http://")
	url = strings.TrimPrefix(url, "https://")
	path := "/"
	arr := strings.Split(url, "/")
	if len(arr) == 2 {
		path = arr[1]
	}
	if !strings.HasPrefix(path, "/") {
		path = "/" + path
	}

	connectPath := ""
	if c.DNS != nil {
		var err error
		connectPath, err = c.DNS.GetIP(arr[0])
		if err != nil {
			return nil, err
		}
	}

	resp, err := c.Transport.RoundTrip(
		&Request{
			ConnectPath: connectPath,
			Method:      method,
			Path:        path,
			Protocol:    "HTTP/1.0",
			Headers:     headers,
		},
	)
	return resp, err
}