127 lines
2.8 KiB
Go
127 lines
2.8 KiB
Go
package feeds
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/PuerkitoBio/goquery"
|
|
"github.com/mmcdole/gofeed"
|
|
"github.com/spf13/viper"
|
|
)
|
|
|
|
var fp = gofeed.NewParser()
|
|
var feedStore = &FeedStore{}
|
|
|
|
func Refresh() error {
|
|
interval := viper.GetInt("REFRESH_TIMEOUT")
|
|
|
|
for {
|
|
fmt.Println("Refreshing feeds...")
|
|
|
|
for _, feed := range *feedStore.GetFeeds() {
|
|
go RefreshFeed(feed.FeedURL)
|
|
}
|
|
|
|
fmt.Println("Reaping old items...")
|
|
feedStore.DeleteOldReadItems()
|
|
|
|
fmt.Printf("Going to sleep for %d minutes\n", interval)
|
|
time.Sleep(time.Duration(interval) * time.Minute)
|
|
}
|
|
}
|
|
|
|
func RefreshFeed(feedUrl string) Feed {
|
|
fmt.Printf("Refreshing %s\n", feedUrl)
|
|
var feed Feed
|
|
f, err := fp.ParseURL(feedUrl)
|
|
if err != nil && err == gofeed.ErrFeedTypeNotDetected {
|
|
foundFeed := loadFeedFromWebpage(feedUrl)
|
|
if foundFeed != nil {
|
|
feed = *foundFeed
|
|
}
|
|
} else if err != nil {
|
|
fmt.Printf("Failed to refresh %s - %v\n", feedUrl, err)
|
|
} else {
|
|
imageURL := ""
|
|
if f.Image != nil {
|
|
imageURL = f.Image.URL
|
|
}
|
|
|
|
feed = Feed{
|
|
ID: strings.ReplaceAll(base64.StdEncoding.EncodeToString([]byte(feedUrl)), "/", ""),
|
|
Title: f.Title,
|
|
Description: f.Description,
|
|
HomepageURL: f.Link,
|
|
FeedURL: feedUrl,
|
|
ImageURL: imageURL,
|
|
LastUpdated: f.UpdatedParsed,
|
|
Items: []Item{},
|
|
}
|
|
for _, item := range f.Items {
|
|
imageURL := ""
|
|
if f.Image != nil {
|
|
imageURL = f.Image.URL
|
|
}
|
|
|
|
createdTime := item.PublishedParsed
|
|
if createdTime == nil {
|
|
createdTime = item.UpdatedParsed
|
|
}
|
|
|
|
feed.Items = append(feed.Items, Item{
|
|
ID: strings.ReplaceAll(base64.StdEncoding.EncodeToString([]byte(item.GUID)), "/", ""),
|
|
Title: item.Title,
|
|
Description: item.Description,
|
|
Content: item.Content,
|
|
URL: item.Link,
|
|
ImageURL: imageURL,
|
|
LastUpdated: item.UpdatedParsed,
|
|
Created: createdTime,
|
|
GUID: item.GUID,
|
|
FeedID: feed.ID,
|
|
})
|
|
}
|
|
feedStore.SaveFeed(feed)
|
|
|
|
fmt.Printf("Finished refreshing '%s'\n", feed.Title)
|
|
}
|
|
|
|
return feed
|
|
}
|
|
|
|
func loadFeedFromWebpage(webpageUrl string) *Feed {
|
|
res, err := http.Get(webpageUrl)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
return nil
|
|
}
|
|
defer res.Body.Close()
|
|
if res.StatusCode != 200 {
|
|
fmt.Printf("status code error: %d %s", res.StatusCode, res.Status)
|
|
return nil
|
|
}
|
|
|
|
doc, err := goquery.NewDocumentFromReader(res.Body)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
return nil
|
|
}
|
|
|
|
feedUrl, ok := doc.Find(`[rel="alternate"][type="application/rss+xml"]`).First().Attr("href")
|
|
if ok {
|
|
if !strings.HasPrefix(feedUrl, "http") {
|
|
parsedUrl, _ := url.Parse(webpageUrl)
|
|
feedUrl = fmt.Sprintf("%s://%s%s", parsedUrl.Scheme, parsedUrl.Host, feedUrl)
|
|
}
|
|
|
|
feed := RefreshFeed(feedUrl)
|
|
return &feed
|
|
}
|
|
|
|
return nil
|
|
}
|