From 2ca59a846bb75f95a93495bbec5ba2cd7c30fa42 Mon Sep 17 00:00:00 2001
From: Paul Wilde <paul@wilde.cloud>
Date: Mon, 24 May 2021 20:58:15 +0100
Subject: [PATCH] added parsing of rss

---
 .gitignore           |  2 +-
 datafile.toml        |  3 --
 podcatch/podcatch.go | 65 ++++++++++++++++++++++++++++++++++++++++++--
 structs/structs.go   | 38 ++++++++++++++++++++++++--
 4 files changed, 98 insertions(+), 10 deletions(-)
 delete mode 100644 datafile.toml

diff --git a/.gitignore b/.gitignore
index 258f27a..a0979b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-datafile
+podcasts.toml
diff --git a/datafile.toml b/datafile.toml
deleted file mode 100644
index 5a676d9..0000000
--- a/datafile.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-Name = "Hello Internet"
-URL = "http://www.hellointernet.fm/podcast?format=rss"
-Dir = "/home/psw/podcasts/HelloInternet"
diff --git a/podcatch/podcatch.go b/podcatch/podcatch.go
index 6119e8c..c9dee07 100644
--- a/podcatch/podcatch.go
+++ b/podcatch/podcatch.go
@@ -1,10 +1,69 @@
-package podcatch
+ package podcatch
 import (
   "fmt"
-  // "podcatch/structs"s
-  // "github.com/pelletier/go-toml"
+  . "podcatch/structs"
+  "github.com/pelletier/go-toml"
+  "encoding/xml"
+  "io/ioutil"
+  "net/http"
+  "regexp"
+  "log"
 )
 var Version string = "0.1"
+var Podcasts map[string]Podcast = make(map[string]Podcast)
 func Start(){
   fmt.Printf("Starting PodCatch Version : %s...\r\n", Version )
+  getPodcasts()
+}
+func getPodcasts(){
+  if len(Podcasts) == 0 {
+    getPodcastFiles()
+  }
+  for shortname,podcast := range Podcasts {
+    fmt.Println(shortname)
+    fmt.Printf("Checking RSS for %s...\r\n", podcast.Name)
+    podcast.RSS = getRSS(podcast)
+    downloadCasts(podcast)
+  }
+}
+func getPodcastFiles() {
+  content, err := ioutil.ReadFile("podcasts.toml")
+  if err != nil {
+    log.Fatal(err)
+  }
+  e := toml.Unmarshal(content,&Podcasts)
+  if e != nil {
+    log.Fatal(err)
+  }
+  fmt.Printf("Found %d podcasts.\r\n",len(Podcasts))
+}
+func getRSS(podcast Podcast) Rss {
+  resp, err := http.Get(podcast.URL)
+  if err != nil {
+    log.Fatal(err)
+  }
+  defer resp.Body.Close()
+  html, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+  return parseRSS(podcast,html)
+}
+func parseRSS(podcast Podcast, rssxml []byte) Rss {
+  var rss Rss
+  e := xml.Unmarshal(rssxml,&rss)
+  if e != nil {
+    log.Fatal(e)
+  }
+  return rss
+}
+func downloadCasts(podcast Podcast) {
+  fmt.Println(podcast.RSS.Version)
+  for _,item := range podcast.RSS.Channel.Items {
+    fmt.Printf("Downloading '%s' from : %s.\r\n", item.Title, item.Media.URL)
+    re := regexp.MustCompile(`[^0-9a-zA-Z-_]+`)
+    filename := re.ReplaceAllString(item.Title,"_") + ".mp3"
+    fmt.Println(filename)
+    // fmt.Printf("%s - %s - %s\r\n", item.Title, item.Media.URL, item.Media.Type)
+  }
 }
diff --git a/structs/structs.go b/structs/structs.go
index 54e72cc..47da4a3 100644
--- a/structs/structs.go
+++ b/structs/structs.go
@@ -1,7 +1,39 @@
 package structs
-
+import (
+  "encoding/xml"
+)
 type Podcast struct {
-  Name string
   URL string
-  Dir string
+  Name string
+  Directory string
+  RSS Rss
+}
+type Rss struct {
+   XMLName     xml.Name `xml:"rss"`
+   Version     string   `xml:"version,attr"`
+   Channel     Channel  `xml:"channel"`
+   Description string   `xml:"description"`
+   Title       string   `xml:"title"`
+   Link        string   `xml:"link"`
+}
+type Channel struct {
+   XMLName     xml.Name `xml:"channel"`
+   Title       string   `xml:"title"`
+   Link        string   `xml:"link"`
+   Description string   `xml:"description"`
+   Items       []Item   `xml:"item"`
+}
+type Item struct {
+   XMLName  xml.Name `xml:"item"`
+   Title       string `xml:"title"`
+   Link        string `xml:"link"`
+   Description string `xml:"description"`
+   PubDate     string `xml:"pubdate"`
+   Guid        string `xml:"guid"`
+   Media       Media  `xml:"enclosure"`
+}
+type Media struct {
+  XMLName xml.Name `xml:"enclosure"`
+  URL   string     `xml:"url,attr"`
+  Type  string     `xml:"type,attr"`
 }