~asimpson/podcast-filter: feat: add negate query param

2 files changed, 18 insertions(+), 8 deletions(-)

M README.md
M main.go

M README.md => README.md +4 -2

@@ 1,3 1,5 @@
-podcast-filter
+https://podcastfilter.com
 
-hosted at https://podcastfilter.com
+If you've ever wanted a filtered podcast feed that only has certain episodes of a show based on criteria in the episode description podcast-filter is for you!
+
+Basically it's [`strings.Contains`](https://golang.org/pkg/strings/#Contains) applied to every episode description of the feed you give it.

M main.go => main.go +14 -6

@@ 15,20 15,23 @@ const index = `
 <html lang="en">
   <head>
     <meta charset="UTF-8"/>
+		<meta name="viewport" content="width=device-width,initial-scale=1.0">
     <title>podcastfilter.com</title>
   </head>
   <body>
     <h1>Welcome to podcastfilter.com</h1>
 
-    <p>To use podcastfilter you need to supply two query params:</p>
+    <p>To use podcastfilter you need to supply two query params (plus an optional third):</p>
 
     <ul>
       <li><code>query=SOME TEXT</code></li>
       <li><code>feed=https://example.com/somefeed.xml</code></li>
+      <li><code>negate=true</code></li>
     </ul>
-    <p>The final URL should look like this: <code>https://podcastfilter.com/?feed=https://example.com/feed.xml&query=Hi&20Bye</code></p>
+    <p>The final URL should look like this: <code>https://podcastfilter.com/?feed=https://example.com/feed.xml&query=Hi&20Bye&negate=true</code></p>
 
-    <p>podcastfilter will then return a new RSS feed you can subscribe to that only includes items whose descriptions contain the query.</p>
+    <p>podcastfilter will then return a new RSS feed you can subscribe to that only includes items whose descriptions contain the query
+		(or if negate is true will return a feed of items that don't match the query).</p>
   </body>
 </html>
 `


@@ 70,8 73,9 @@ type enclosure struct {
 	Type   string `xml:"type,attr"`
 }
 
-func downloadAndParse(feedURL string, query string) string {
+func downloadAndParse(feedURL string, query string, negate string) string {
 	resp, err := http.Get(feedURL)
+	shouldNegate := negate == "true"
 
 	if err != nil {
 		fmt.Println("http err: ", err)


@@ 93,7 97,11 @@ func downloadAndParse(feedURL string, query string) string {
 		var item = feed.Items[i]
 		matches := strings.Contains(item.Description, query)
 
-		if matches {
+		if matches && !shouldNegate {
+			matchedItems = append(matchedItems, item)
+		}
+
+		if !matches && shouldNegate {
 			matchedItems = append(matchedItems, item)
 		}
 	}


@@ 127,7 135,7 @@ func main() {
 			io.WriteString(w, index)
 		} else {
 			w.Header().Set("Content-Type", "application/rss+xml")
-			feed := downloadAndParse(query.Get("feed"), query.Get("query"))
+			feed := downloadAndParse(query.Get("feed"), query.Get("query"), query.Get("negate"))
 			io.WriteString(w, string(feed))
 		}
 	}