// ResponseWriter example using Podcast.Encode(w io.Writer).
	//
	httpHandler := func(w http.ResponseWriter, r *http.Request) {
	
	    // instantiate a new Podcast
	    p := podcast.New(
	        "eduncan911 Podcasts",
	        "http://eduncan911.com/",
	        "An example Podcast",
	        &pubDate, &updatedDate,
	    )
	
	    // add some channel properties
	    p.AddAuthor("Jane Doe", "[email protected]")
	    p.AddAtomLink("http://eduncan911.com/feed.rss")
	    p.AddImage("http://janedoe.com/i.jpg")
	    p.AddSummary(`link <a href="http://example.com">example.com</a>`)
	    p.IExplicit = "no"
	
	    for i := int64(1); i < 3; i++ {
	        n := strconv.FormatInt(i, 10)
	        d := pubDate.AddDate(0, 0, int(i))
	
	        // create an Item
	        item := podcast.Item{
	            Title:       "Episode " + n,
	            Link:        "http://example.com/" + n + ".mp3",
	            Description: "Description for Episode " + n,
	            PubDate:     &d,
	        }
	        item.AddImage("http://example.com/episode-" + n + ".png")
	        item.AddSummary(`item <a href="http://example.com">example.com</a>`)
	        // add a Download to the Item
	        item.AddEnclosure("http://e.com/"+n+".mp3", podcast.MP3, 55*(i+1))
	
	        // add the Item and check for validation errors
	        if _, err := p.AddItem(item); err != nil {
	            fmt.Println(item.Title, ": error", err.Error())
	            return
	        }
	    }
	
	    // set the Content Type to that of XML
	    w.Header().Set("Content-Type", "application/xml")
	
	    // finally, Encode and write the Podcast to the ResponseWriter.
	    //
	    // a simple pattern is to handle any errors within this check.
	    // alternatively if using middleware, you can just return
	    // the Podcast entity as it also implements the io.Writer interface
	    // that complies with several middleware packages.
	    if err := p.Encode(w); err != nil {
	        http.Error(w, err.Error(), http.StatusInternalServerError)
	    }
	}
	
	rr := httptest.NewRecorder()
	httpHandler(rr, nil)
	os.Stdout.Write(rr.Body.Bytes())
	// Output:
	// <?xml version="1.0" encoding="UTF-8"?>
	// <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
	//   <channel>
	//     <title>eduncan911 Podcasts</title>
	//     <link>http://eduncan911.com/</link>
	//     <description>An example Podcast</description>
	//     <generator>go podcast v1.3.1 (github.com/eduncan911/podcast)</generator>
	//     <language>en-us</language>
	//     <lastBuildDate>Mon, 06 Feb 2017 08:21:52 +0000</lastBuildDate>
	//     <managingEditor>[email protected] (Jane Doe)</managingEditor>
	//     <pubDate>Sat, 04 Feb 2017 08:21:52 +0000</pubDate>
	//     <image>
	//       <url>http://janedoe.com/i.jpg</url>
	//       <title>eduncan911 Podcasts</title>
	//       <link>http://eduncan911.com/</link>
	//     </image>
	//     <atom:link href="http://eduncan911.com/feed.rss" rel="self" type="application/rss+xml"></atom:link>
	//     <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//     <itunes:summary><![CDATA[link <a href="http://example.com">example.com</a>]]></itunes:summary>
	//     <itunes:image href="http://janedoe.com/i.jpg"></itunes:image>
	//     <itunes:explicit>no</itunes:explicit>
	//     <item>
	//       <guid>http://e.com/1.mp3</guid>
	//       <title>Episode 1</title>
	//       <link>http://example.com/1.mp3</link>
	//       <description>Description for Episode 1</description>
	//       <pubDate>Sun, 05 Feb 2017 08:21:52 +0000</pubDate>
	//       <enclosure url="http://e.com/1.mp3" length="110" type="audio/mpeg"></enclosure>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:summary><![CDATA[item <a href="http://example.com">example.com</a>]]></itunes:summary>
	//       <itunes:image href="http://example.com/episode-1.png"></itunes:image>
	//     </item>
	//     <item>
	//       <guid>http://e.com/2.mp3</guid>
	//       <title>Episode 2</title>
	//       <link>http://example.com/2.mp3</link>
	//       <description>Description for Episode 2</description>
	//       <pubDate>Mon, 06 Feb 2017 08:21:52 +0000</pubDate>
	//       <enclosure url="http://e.com/2.mp3" length="165" type="audio/mpeg"></enclosure>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:summary><![CDATA[item <a href="http://example.com">example.com</a>]]></itunes:summary>
	//       <itunes:image href="http://example.com/episode-2.png"></itunes:image>
	//     </item>
	//   </channel>
	// </rss>

// instantiate a new Podcast
	p := podcast.New(
	    "Sample Podcasts",
	    "http://example.com/",
	    "An example Podcast",
	    &createdDate, &updatedDate,
	)
	
	// add some channel properties
	p.ISubtitle = "A simple Podcast"
	p.AddSummary(`link <a href="http://example.com">example.com</a>`)
	p.AddImage("http://example.com/podcast.jpg")
	p.AddAuthor("Jane Doe", "[email protected]")
	p.AddAtomLink("http://example.com/atom.rss")
	
	for i := int64(9); i < 11; i++ {
	    n := strconv.FormatInt(i, 10)
	    d := pubDate.AddDate(0, 0, int(i))
	
	    // create an Item
	    item := podcast.Item{
	        Title:       "Episode " + n,
	        Description: "Description for Episode " + n,
	        ISubtitle:   "A simple episode " + n,
	        PubDate:     &d,
	    }
	    item.AddImage("http://example.com/episode-" + n + ".png")
	    item.AddSummary(`item k <a href="http://example.com">example.com</a>`)
	    // add a Download to the Item
	    item.AddEnclosure("http://example.com/"+n+".mp3", podcast.MP3, 55*(i+1))
	
	    // add the Item and check for validation errors
	    if _, err := p.AddItem(item); err != nil {
	        os.Stderr.WriteString("item validation error: " + err.Error())
	    }
	}
	
	// Podcast.Encode writes to an io.Writer
	if err := p.Encode(os.Stdout); err != nil {
	    fmt.Println("error writing to stdout:", err.Error())
	}
	
	// Output:
	// <?xml version="1.0" encoding="UTF-8"?>
	// <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
	//   <channel>
	//     <title>Sample Podcasts</title>
	//     <link>http://example.com/</link>
	//     <description>An example Podcast</description>
	//     <generator>go podcast v1.3.1 (github.com/eduncan911/podcast)</generator>
	//     <language>en-us</language>
	//     <lastBuildDate>Mon, 06 Feb 2017 08:21:52 +0000</lastBuildDate>
	//     <managingEditor>[email protected] (Jane Doe)</managingEditor>
	//     <pubDate>Wed, 01 Feb 2017 08:21:52 +0000</pubDate>
	//     <image>
	//       <url>http://example.com/podcast.jpg</url>
	//       <title>Sample Podcasts</title>
	//       <link>http://example.com/</link>
	//     </image>
	//     <atom:link href="http://example.com/atom.rss" rel="self" type="application/rss+xml"></atom:link>
	//     <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//     <itunes:subtitle>A simple Podcast</itunes:subtitle>
	//     <itunes:summary><![CDATA[link <a href="http://example.com">example.com</a>]]></itunes:summary>
	//     <itunes:image href="http://example.com/podcast.jpg"></itunes:image>
	//     <item>
	//       <guid>http://example.com/9.mp3</guid>
	//       <title>Episode 9</title>
	//       <link>http://example.com/9.mp3</link>
	//       <description>Description for Episode 9</description>
	//       <pubDate>Mon, 13 Feb 2017 08:21:52 +0000</pubDate>
	//       <enclosure url="http://example.com/9.mp3" length="550" type="audio/mpeg"></enclosure>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:subtitle>A simple episode 9</itunes:subtitle>
	//       <itunes:summary><![CDATA[item k <a href="http://example.com">example.com</a>]]></itunes:summary>
	//       <itunes:image href="http://example.com/episode-9.png"></itunes:image>
	//     </item>
	//     <item>
	//       <guid>http://example.com/10.mp3</guid>
	//       <title>Episode 10</title>
	//       <link>http://example.com/10.mp3</link>
	//       <description>Description for Episode 10</description>
	//       <pubDate>Tue, 14 Feb 2017 08:21:52 +0000</pubDate>
	//       <enclosure url="http://example.com/10.mp3" length="605" type="audio/mpeg"></enclosure>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:subtitle>A simple episode 10</itunes:subtitle>
	//       <itunes:summary><![CDATA[item k <a href="http://example.com">example.com</a>]]></itunes:summary>
	//       <itunes:image href="http://example.com/episode-10.png"></itunes:image>
	//     </item>
	//   </channel>
	// </rss>

i := podcast.Item{
	    Title:       "item title",
	    Description: "item desc",
	    Link:        "item link",
	}
	d := int64(533)
	
	// add the Duration in Seconds
	i.AddDuration(d)
	
	fmt.Println(i.IDuration)
	// Output:
	// 8:53

p := podcast.New("title", "link", "description", nil, nil)
	i := podcast.Item{
	    Title:       "item title",
	    Description: "item desc",
	    Link:        "item link",
	}
	d := pubDate.AddDate(0, 0, -11)
	
	// add the pub date
	i.AddPubDate(&d)
	
	// before adding
	if i.PubDate != nil {
	    fmt.Println(i.PubDateFormatted, *i.PubDate)
	}
	
	// this should not override with Podcast.PubDate
	if _, err := p.AddItem(i); err != nil {
	    fmt.Println(err)
	}
	
	// after adding item
	fmt.Println(i.PubDateFormatted, *i.PubDate)
	// Output:
	// Tue, 24 Jan 2017 08:21:52 +0000 2017-01-24 08:21:52 +0000 UTC
	// Tue, 24 Jan 2017 08:21:52 +0000 2017-01-24 08:21:52 +0000 UTC

ti, l, d := "title", "link", "description"
	
	// instantiate a new Podcast
	p := podcast.New(ti, l, d, &pubDate, &updatedDate)
	
	fmt.Println(p.Title, p.Link, p.Description, p.Language)
	fmt.Println(p.PubDate, p.LastBuildDate)
	// Output:
	// title link description en-us
	// Sat, 04 Feb 2017 08:21:52 +0000 Mon, 06 Feb 2017 08:21:52 +0000

p := podcast.New("title", "link", "description", nil, nil)
	
	// add the Author
	p.AddAuthor("the name", "[email protected]")
	
	fmt.Println(p.ManagingEditor)
	fmt.Println(p.IAuthor)
	// Output:
	// [email protected] (the name)
	// [email protected] (the name)

p := podcast.New("title", "link", "description", nil, nil)
	
	// add the Category
	p.AddCategory("Bombay", nil)
	p.AddCategory("American", []string{"Longhair", "Shorthair"})
	p.AddCategory("Siamese", nil)
	
	fmt.Println(len(p.ICategories), len(p.ICategories[1].ICategories))
	fmt.Println(p.Category)
	// Output:
	// 3 2
	// Bombay,American,Siamese

p := podcast.New("title", "link", "description", nil, nil)
	
	// add the Image
	p.AddImage("http://example.com/image.jpg")
	
	if p.Image != nil && p.IImage != nil {
	    fmt.Println(p.Image.URL)
	    fmt.Println(p.IImage.HREF)
	}
	// Output:
	// http://example.com/image.jpg
	// http://example.com/image.jpg

p := podcast.New("title", "link", "description", &pubDate, &updatedDate)
	p.AddAuthor("the name", "[email protected]")
	p.AddImage("http://example.com/image.jpg")
	
	// create an Item
	date := pubDate.AddDate(0, 0, 77)
	item := podcast.Item{
	    Title:       "Episode 1",
	    Description: "Description for Episode 1",
	    ISubtitle:   "A simple episode 1",
	    PubDate:     &date,
	}
	item.AddEnclosure(
	    "http://example.com/1.mp3",
	    podcast.MP3,
	    183,
	)
	item.AddSummary("See more at <a href=\"http://example.com\">Here</a>")
	
	// add the Item
	if _, err := p.AddItem(item); err != nil {
	    fmt.Println("item validation error: " + err.Error())
	}
	
	if len(p.Items) != 1 {
	    fmt.Println("expected 1 item in the collection")
	}
	pp := p.Items[0]
	fmt.Println(
	    pp.GUID, pp.Title, pp.Link, pp.Description, pp.Author,
	    pp.AuthorFormatted, pp.Category, pp.Comments, pp.Source,
	    pp.PubDate, pp.PubDateFormatted, *pp.Enclosure,
	    pp.IAuthor, pp.IDuration, pp.IExplicit, pp.IIsClosedCaptioned,
	    pp.IOrder, pp.ISubtitle, pp.ISummary)
	// Output:
	// http://example.com/1.mp3 Episode 1 http://example.com/1.mp3 Description for Episode 1 &{{ }  [email protected] (the name)}     2017-04-22 08:21:52 +0000 UTC Sat, 22 Apr 2017 08:21:52 +0000 {{ } http://example.com/1.mp3 183 183 audio/mpeg audio/mpeg} [email protected] (the name)     A simple episode 1 &{{ } See more at <a href="http://example.com">Here</a>}

p := podcast.New("title", "link", "description", nil, nil)
	d := pubDate.AddDate(0, 0, -7)
	
	p.AddLastBuildDate(&d)
	
	fmt.Println(p.LastBuildDate)
	// Output:
	// Sat, 28 Jan 2017 08:21:52 +0000

p := podcast.New("title", "link", "description", nil, nil)
	d := pubDate.AddDate(0, 0, -5)
	
	p.AddPubDate(&d)
	
	fmt.Println(p.PubDate)
	// Output:
	// Mon, 30 Jan 2017 08:21:52 +0000

p := podcast.New("title", "link", "description", nil, nil)
	
	// add a summary
	p.AddSummary(`A very cool podcast with a long summary!
	
	See more at our website: <a href="http://example.com">example.com</a>
	`)
	
	if p.ISummary != nil {
	    fmt.Println(p.ISummary.Text)
	}
	// Output:
	// A very cool podcast with a long summary!
	//
	// See more at our website: <a href="http://example.com">example.com</a>

p := podcast.New(
	    "eduncan911 Podcasts",
	    "http://eduncan911.com/",
	    "An example Podcast",
	    &pubDate, &updatedDate,
	)
	p.AddAuthor("Jane Doe", "[email protected]")
	p.AddImage("http://janedoe.com/i.jpg")
	p.AddSummary(`A very cool podcast with a long summary using Bytes()!
	
	See more at our website: <a href="http://example.com">example.com</a>
	`)
	
	for i := int64(5); i < 7; i++ {
	    n := strconv.FormatInt(i, 10)
	    d := pubDate.AddDate(0, 0, int(i+3))
	
	    item := podcast.Item{
	        Title:       "Episode " + n,
	        Link:        "http://example.com/" + n + ".mp3",
	        Description: "Description for Episode " + n,
	        PubDate:     &d,
	    }
	    if _, err := p.AddItem(item); err != nil {
	        fmt.Println(item.Title, ": error", err.Error())
	        break
	    }
	}
	
	// call Podcast.Bytes() to return a byte array
	os.Stdout.Write(p.Bytes())
	
	// Output:
	// <?xml version="1.0" encoding="UTF-8"?>
	// <rss version="2.0" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
	//   <channel>
	//     <title>eduncan911 Podcasts</title>
	//     <link>http://eduncan911.com/</link>
	//     <description>An example Podcast</description>
	//     <generator>go podcast v1.3.1 (github.com/eduncan911/podcast)</generator>
	//     <language>en-us</language>
	//     <lastBuildDate>Mon, 06 Feb 2017 08:21:52 +0000</lastBuildDate>
	//     <managingEditor>[email protected] (Jane Doe)</managingEditor>
	//     <pubDate>Sat, 04 Feb 2017 08:21:52 +0000</pubDate>
	//     <image>
	//       <url>http://janedoe.com/i.jpg</url>
	//       <title>eduncan911 Podcasts</title>
	//       <link>http://eduncan911.com/</link>
	//     </image>
	//     <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//     <itunes:summary><![CDATA[A very cool podcast with a long summary using Bytes()!
	//
	// See more at our website: <a href="http://example.com">example.com</a>
	// ]]></itunes:summary>
	//     <itunes:image href="http://janedoe.com/i.jpg"></itunes:image>
	//     <item>
	//       <guid>http://example.com/5.mp3</guid>
	//       <title>Episode 5</title>
	//       <link>http://example.com/5.mp3</link>
	//       <description>Description for Episode 5</description>
	//       <pubDate>Sun, 12 Feb 2017 08:21:52 +0000</pubDate>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:image href="http://janedoe.com/i.jpg"></itunes:image>
	//     </item>
	//     <item>
	//       <guid>http://example.com/6.mp3</guid>
	//       <title>Episode 6</title>
	//       <link>http://example.com/6.mp3</link>
	//       <description>Description for Episode 6</description>
	//       <pubDate>Mon, 13 Feb 2017 08:21:52 +0000</pubDate>
	//       <itunes:author>[email protected] (Jane Doe)</itunes:author>
	//       <itunes:image href="http://janedoe.com/i.jpg"></itunes:image>
	//     </item>
	//   </channel>
	// </rss>