From ef3b5bdfe4c005758dd4aabcb3ef082270b03e19 Mon Sep 17 00:00:00 2001
From: Christine Dodrill <me@christine.website>
Date: Sat, 8 Dec 2018 09:10:55 -0800
Subject: litbot

---
 discord/frequency/main.go | 109 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 discord/frequency/main.go

diff --git a/discord/frequency/main.go b/discord/frequency/main.go
new file mode 100644
index 0000000..cb1fc7b
--- /dev/null
+++ b/discord/frequency/main.go
@@ -0,0 +1,109 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+	"github.com/garyburd/redigo/redis"
+	_ "github.com/joho/godotenv/autoload"
+)
+
+// Variables used for command line parameters
+var (
+	token    = os.Getenv("DISCORD_TOKEN")
+	redisurl = os.Getenv("REDIS_URL")
+)
+
+func init() {
+	flag.Parse()
+}
+
+func main() {
+	// Create a new Discord session using the provided bot token.
+	dg, err := discordgo.New("Bot " + token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	p, err := NewPool(redisurl)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Register the messageCreate func as a callback for MessageCreate events.
+	dg.AddHandler(messageCreate(p))
+
+	// Open a websocket connection to Discord and begin listening.
+	err = dg.Open()
+	if err != nil {
+		fmt.Println("error opening connection,", err)
+		return
+	}
+
+	// Wait here until CTRL-C or other term signal is received.
+	fmt.Println("Bot is now running.  Press CTRL-C to exit.")
+	sc := make(chan os.Signal, 1)
+	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
+	<-sc
+
+	// Cleanly close down the Discord session.
+	dg.Close()
+}
+
+// This function will be called (due to AddHandler above) every time a new
+// message is created on any channel that the autenticated bot has access to.
+func messageCreate(p *redis.Pool) func(*discordgo.Session, *discordgo.MessageCreate) {
+	return func(s *discordgo.Session, m *discordgo.MessageCreate) {
+		// Ignore all messages created by the bot itself
+		// This isn't required in this specific example but it's a good practice.
+		if m.Author.ID == s.State.User.ID {
+			return
+		}
+
+		if strings.Contains(m.Content, "🅱️") {
+			go s.MessageReactionAdd(m.ChannelID, m.Message.ID, "🅱️")
+		}
+		if strings.Contains(m.Content, "shit") {
+			go s.MessageReactionAdd(m.ChannelID, m.Message.ID, "💩")
+		}
+		if strings.Contains(m.Content, "🔥") {
+			go s.MessageReactionAdd(m.ChannelID, m.Message.ID, "🔥")
+		}
+		if strings.Contains(strings.ToLower(m.Content), "lit") {
+			go s.MessageReactionAdd(m.ChannelID, m.Message.ID, "🔥")
+		}
+
+		conn := p.Get()
+		defer conn.Close()
+
+		_, err := conn.Do("INCR", "counts:"+m.Author.ID)
+		if err != nil {
+			log.Fatal(err)
+		}
+		log.Println(m.Author.ID, m.ChannelID, m.ContentWithMentionsReplaced())
+	}
+}
+
+// NewPool creates a new redis pool with default "sane" settings.
+func NewPool(uri string) (*redis.Pool, error) {
+	return &redis.Pool{
+		MaxIdle:     3,
+		IdleTimeout: 4 * time.Minute,
+		Dial:        func() (redis.Conn, error) { return redis.DialURL(uri) },
+		TestOnBorrow: func(c redis.Conn, t time.Time) error {
+			if time.Since(t) < time.Minute {
+				return nil
+			}
+			_, err := c.Do("PING")
+			return err
+		},
+	}, nil
+}
-- 
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