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package main
import (
"fmt"
"log"
"net/http"
"os"
"golang.org/x/net/html"
"gioui.org/app"
"gioui.org/font/gofont"
"gioui.org/io/system"
"gioui.org/layout"
"gioui.org/op"
"gioui.org/unit"
"gioui.org/widget/material"
)
// FeedItem represents a single RSS entry
type FeedItem struct {
Title string
Link string
}
// Simple RSS fetcher (parses only <item><title> and <link>)
func fetchRSS(url string) ([]FeedItem, error) {
resp, err := http.Get(url)
if err != nil {
return nil, err
}
defer resp.Body.Close()
doc, err := html.Parse(resp.Body)
if err != nil {
return nil, err
}
var items []FeedItem
var f func(*html.Node)
f = func(n *html.Node) {
if n.Type == html.ElementNode && n.Data == "item" {
var item FeedItem
for c := n.FirstChild; c != nil; c = c.NextSibling {
if c.Type == html.ElementNode {
switch c.Data {
case "title":
if c.FirstChild != nil {
item.Title = c.FirstChild.Data
}
case "link":
if c.FirstChild != nil {
item.Link = c.FirstChild.Data
}
}
}
}
items = append(items, item)
}
for c := n.FirstChild; c != nil; c = c.NextSibling {
f(c)
}
}
f(doc)
return items, nil
}
func main() {
go func() {
w := app.NewWindow(
app.Title("MiniRSS"),
app.Size(unit.Dp(400), unit.Dp(600)),
)
if err := loop(w); err != nil {
log.Fatal(err)
}
os.Exit(0)
}()
app.Main()
}
func loop(w *app.Window) error {
th := material.NewTheme(gofont.Collection())
// Replace with any RSS feed you want to test
feedURL := "https://xkcd.com/atom.xml"
items, err := fetchRSS(feedURL)
if err != nil {
return fmt.Errorf("failed to fetch RSS: %w", err)
}
list := layout.List{
Axis: layout.Vertical,
}
var ops op.Ops
for {
e := <-w.Events()
switch e := e.(type) {
case system.DestroyEvent:
return e.Err
case system.FrameEvent:
gtx := layout.NewContext(&ops, e)
list.Layout(gtx, len(items), func(gtx layout.Context, i int) layout.Dimensions {
title := material.H6(th, items[i].Title)
return title.Layout(gtx)
})
e.Frame(gtx.Ops)
}
}
}
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