1 files changed, 100 insertions, 0 deletions
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..75dad75
--- /dev/null
+++ b/main.go
@@ -0,0 +1,100 @@
+package main
+
+import (
+	"flag"
+	"github.com/gorilla/feeds"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"regexp"
+	"strconv"
+	"time"
+)
+
+type subst struct {
+	from string
+	to   string
+}
+
+var (
+	substitutes = []subst{
+		{from: `&quot;`, to: `"`},
+		{from: `&ndash;`, to: `–`},
+	}
+
+	programNameRe  = regexp.MustCompile(`<h2>(.+?)?</h2>`)
+	episodeRe      = regexp.MustCompile(`(?s)<div class="brand__list\-\-wrap\-\-item">(.+?)?<div class="add\-to\-list">`)
+	episodeAudioRe = regexp.MustCompile(`data\-id="(.+?)?">`)
+	episodeDateRe  = regexp.MustCompile(`brand\-time brand\-menu\-link">(.+?)?\.(.+?)?\.(.+?)? в (.+?)?:(.+?)?</a>`)
+	episodeTitleRe = regexp.MustCompile(`title brand\-menu\-link">(.+?)?</a>`)
+	episodeUrlRe   = regexp.MustCompile(`<a href="/brand/(.+?)?" class="title`)
+
+	feed = &feeds.Feed{
+		Created: time.Now(),
+	}
+	outputPath, programNumber string
+)
+
+func main() {
+	flag.StringVar(&outputPath, "path", "./", "path to put resulting RSS file in")
+	flag.StringVar(&programNumber, "brand", "57083", "brand number (defaults to Aerostat)")
+	flag.Parse()
+
+	programUrl := "http://www.radiorus.ru/brand/" + programNumber + "/episodes"
+	res, err := http.Get(programUrl)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer res.Body.Close()
+	programPage, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for _, sub := range substitutes {
+		re := regexp.MustCompile(sub.from)
+		programPage = re.ReplaceAll(programPage, []byte(sub.to))
+	}
+
+	feed.Title = string(programNameRe.FindSubmatch(programPage)[1])
+	feed.Link = &feeds.Link{Href: programUrl}
+	episodes := episodeRe.FindAll(programPage, -1)
+
+	for _, episode := range episodes {
+		episodeUrl := "http://www.radiorus.ru/brand/" + string(episodeUrlRe.FindSubmatch(episode)[1])
+		episodeTitle := string(episodeTitleRe.FindSubmatch(episode)[1])
+		episodeAudioUrl := "https://audio.vgtrk.com/download?id=" + string(episodeAudioRe.FindSubmatch(episode)[1])
+		dateBytes := episodeDateRe.FindSubmatch(episode)
+		var date [5]int
+		for i, b := range dateBytes[1:] {
+			date[i], err = strconv.Atoi(string(b))
+			if err != nil {
+				log.Fatal(err)
+			}
+		}
+		moscow := time.FixedZone("Moscow Time", int((3 * time.Hour).Seconds()))
+		episodeDate := time.Date(date[2], time.Month(date[1]), date[0], date[3], date[4], 0, 0, moscow)
+
+		feed.Add(&feeds.Item{
+			Id:    episodeUrl,
+			Link:  &feeds.Link{Href: episodeUrl},
+			Title: episodeTitle,
+			Enclosure: &feeds.Enclosure{
+				Url:    episodeAudioUrl,
+				Length: "1024",
+				Type:   "audio/mpeg",
+			},
+			Created: episodeDate,
+		})
+	}
+
+	rss, err := feed.ToRss()
+	if err != nil {
+		log.Fatal(err)
+	}
+	outputFile := outputPath + "radiorus-" + programNumber + ".rss"
+	output := []byte(rss)
+	if err := ioutil.WriteFile(outputFile, output, 0644); err != nil {
+		log.Fatal(err)
+	}
+}