package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"os"
	"strconv"
	"strings"
	"time"
)

var (
	endpoint string
	token    string
)

func init() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s [options] [file]\n", os.Args[0])
		flag.PrintDefaults()
	}

	flag.StringVar(&token, "token", "", "authentication token")
	flag.StringVar(&endpoint, "endpoint", "", "micropub endpoint to post to")
}

func main() {
	flag.Parse()

	if token == "" {
		token = os.Getenv("TOKEN")
	}

	if endpoint == "" {
		endpoint = os.Getenv("ENDPOINT")
	}

	if token == "" {
		log.Fatalf("no token specified, use -token or $TOKEN env var")
	}

	if endpoint == "" {
		log.Fatalf("no micropub endpoint specified, use -endpoint or $ENDPOINT")
	}

	log.Printf("Enter your post's content here (^D to finish):")

	content, err := ioutil.ReadAll(os.Stdin)
	if err != nil {
		log.Fatalf("error reading content from stdin: %s", err)
	}

	data := url.Values{}
	data.Set("h", "entry")
	data.Set("content", string(content))

	cli := &http.Client{Timeout: 3 * time.Second}
	req, err := http.NewRequest("POST", endpoint, strings.NewReader(data.Encode()))
	if err != nil {
		log.Fatalf("error creating request: %s", err)
	}

	req.Header.Add("User-Agent", "https://github.com/prologic/micropub v0.0.0@HEAD")
	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
	req.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))

	res, err := cli.Do(req)
	if err != nil {
		log.Fatalf("error sending request: %s", err)
	}
	defer res.Body.Close()

	if res.StatusCode/100 != 2 {
		log.Fatalf("failed request: %s", res.Status)
	}
}