From 53495871e40293b635b94273c0301ed4352edffc Mon Sep 17 00:00:00 2001
From: Chris Sexton <chrissexton@users.noreply.github.com>
Date: Sun, 26 Aug 2012 15:15:04 -0400
Subject: [PATCH] Forgot to add factoid.go

---
 plugins/factoid.go | 143 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 plugins/factoid.go

diff --git a/plugins/factoid.go b/plugins/factoid.go
new file mode 100644
index 0000000..58dd91a
--- /dev/null
+++ b/plugins/factoid.go
@@ -0,0 +1,143 @@
+package plugins
+
+import (
+	"bitbucket.org/phlyingpenguin/godeepintir/bot"
+	"fmt"
+	"labix.org/v2/mgo"
+	"labix.org/v2/mgo/bson"
+	"math/rand"
+	"regexp"
+	"strings"
+	"time"
+)
+
+// This is a factoid plugin to serve as an example and quick copy/paste for new plugins.
+
+// factoid stores info about our factoid for lookup and later interaction
+type factoid struct {
+	Id        int
+	Trigger   string
+	Operator  string
+	FullText  string
+	CreatedBy string
+}
+
+type FactoidPlugin struct {
+	Bot  *bot.Bot
+	Coll *mgo.Collection
+}
+
+// NewFactoidPlugin creates a new FactoidPlugin with the Plugin interface
+func NewFactoidPlugin(bot *bot.Bot) *FactoidPlugin {
+	p := &FactoidPlugin{
+		Bot:  bot,
+		Coll: nil,
+	}
+	p.LoadData()
+	return p
+}
+
+func (p *FactoidPlugin) findAction(message string) string {
+	r, err := regexp.Compile("<.*?>| is | are ")
+	if err != nil {
+		panic(err)
+	}
+	action := r.FindString(message)
+	return action
+}
+
+func (p *FactoidPlugin) learnFact(message bot.Message, trigger, operator, fact string) {
+	// if it's an action, we only want the fact part of it in the fulltext
+	full := fact
+	if operator != "action" && operator != "reply" {
+		full = fmt.Sprintf("%s %s %s", trigger, operator, fact)
+	}
+
+	newfact := factoid{
+		Id:        0,
+		Trigger:   trigger,
+		Operator:  operator,
+		FullText:  full,
+		CreatedBy: message.User.Name,
+	}
+	p.Coll.Insert(newfact)
+
+}
+
+func (p *FactoidPlugin) findTrigger(message string) (bool, string) {
+	var results []factoid
+	iter := p.Coll.Find(bson.M{"trigger": message}).Iter()
+	err := iter.All(&results)
+	if err != nil {
+		panic(err)
+	}
+
+	nfacts := len(results)
+	if nfacts == 0 {
+		return false, ""
+	}
+
+	fact := results[rand.Intn(nfacts)]
+	return true, fact.FullText
+}
+
+// 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 *FactoidPlugin) Message(message bot.Message) bool {
+	// This bot does not reply to anything
+
+	// This plugin has no business with normal messages
+	if !message.Command {
+		return false
+	}
+
+	action := p.findAction(message.Body)
+	if action != "" {
+		parts := strings.SplitN(message.Body, action, 2)
+		// This could fail if is were the last word or it weren't in the sentence (like no spaces)
+		if len(parts) != 2 {
+			return false
+		}
+
+		trigger := strings.TrimSpace(parts[0])
+		fact := strings.TrimSpace(parts[1])
+		action := strings.TrimSpace(action)
+
+		strippedaction := strings.Replace(strings.Replace(action, "<", "", 1), ">", "", 1)
+
+		p.learnFact(message, trigger, strippedaction, fact)
+		p.Bot.SendMessage(message.Channel, fmt.Sprintf("Okay, %s.", message.User.Name))
+
+		return true
+	}
+
+	// look for any triggers in the db matching this message
+	if ok, fact := p.findTrigger(message.Body); ok {
+		fact = p.Bot.Filter(message, fact)
+		p.Bot.SendMessage(message.Channel, fact)
+		return true
+	}
+
+	p.Bot.SendMessage(message.Channel, "I don't know.")
+	return true
+}
+
+// LoadData imports any configuration data into the plugin. This is not strictly necessary other
+// than the fact that the Plugin interface demands it exist. This may be deprecated at a later
+// date.
+func (p *FactoidPlugin) LoadData() {
+	// This bot has no data to load
+	p.Coll = p.Bot.Db.C("factoid")
+	rand.Seed(time.Now().Unix())
+}
+
+// Help responds to help requests. Every plugin must implement a help function.
+func (p *FactoidPlugin) Help(channel string, parts []string) {
+	p.Bot.SendMessage(channel, "Sorry, Factoid does not do a goddamn thing.")
+}
+
+// Empty event handler because this plugin does not do anything on event recv
+func (p *FactoidPlugin) Event(kind string, message bot.Message) bool {
+	return false
+}