catbase/plugins/feed.go

120 lines
2.8 KiB
Go

// © 2014 the AlePale Authors under the WTFPL license. See AUTHORS for the list of authors.
package plugins
import (
"fmt"
"log"
"strings"
"time"
)
import "github.com/chrissexton/alepale/bot"
import "labix.org/v2/mgo"
import "labix.org/v2/mgo/bson"
import "github.com/velour/feedme/webfeed"
// This is a skeleton plugin to serve as an example and quick copy/paste for new plugins.
type FeedPlugin struct {
Bot *bot.Bot
Coll *mgo.Collection
}
// NewFeedPlugin creates a new FeedPlugin with the Plugin interface
func NewFeedPlugin(bot *bot.Bot) *FeedPlugin {
p := FeedPlugin{
Bot: bot,
Coll: bot.Db.C("feed"),
}
go p.pollFeeds()
return &p
}
// Message responds to the bot hook on recieving messages.
// This function returns true if the plugin responds in a meaningful way to the users message.
// Otherwise, the function returns false and the bot continues execution of other plugins.
func (p *FeedPlugin) Message(message bot.Message) bool {
lowerBody := strings.ToLower(message.Body)
parts := strings.Split(lowerBody, " ")
log.Println(parts)
if strings.HasPrefix(lowerBody, "register") && len(parts) >= 2 {
url := parts[1]
p.Coll.Insert(bson.M{"url": parts[1]})
p.Bot.SendMessage(message.Channel, fmt.Sprintf("Watching %s", url))
return true
}
return false
}
// Help responds to help requests. Every plugin must implement a help function.
func (p *FeedPlugin) Help(channel string, parts []string) {
p.Bot.SendMessage(channel, "Sorry, Feed does not do a goddamn thing.")
}
// Empty event handler because this plugin does not do anything on event recv
func (p *FeedPlugin) Event(kind string, message bot.Message) bool {
return false
}
// Handler for bot's own messages
func (p *FeedPlugin) BotMessage(message bot.Message) bool {
return false
}
// Register any web URLs desired
func (p *FeedPlugin) RegisterWeb() *string {
return nil
}
func (p *FeedPlugin) pollFeeds() {
//duration := time.Duration(p.Bot.Config.QuoteTime) * time.Minute
duration := time.Duration(20) * time.Second
for {
log.Println("checking feeds")
// get all feeds
var feeds []Feed
err := p.Coll.Find(bson.M{"url": bson.M{"$exists": true}}).All(&feeds)
if err != nil {
log.Println("ERROR:", err)
}
log.Println("Feeds found:", feeds)
for _, feed := range feeds {
p.checkFeed(feed)
}
time.Sleep(time.Duration(duration))
}
}
type Feed struct {
Url string
feed webfeed.Feed
}
func (f Feed) Read(p []byte) (n int, err error) {
var i int
for i = 0; i < len(p) && i < len(f.Url); i++ {
p[i] = f.Url[i]
}
return i, nil
}
func (p *FeedPlugin) checkFeed(f Feed) {
log.Println("Checking feed:", f.Url)
feed, err := webfeed.Read(f)
if err != nil {
log.Printf("Couldn't read %s: %s\n", f.Url, err)
return
}
log.Println("Feed:", feed.Title)
for _, entry := range feed.Entries {
log.Println(entry)
}
}