Added welcome messages to discord bot

bots/discord/OnMessageCreate.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/animenotifier/arn"
+	"github.com/bwmarrin/discordgo"
+)
+
+// OnMessageCreate is called every time a new message is created on any channel.
+func OnMessageCreate(s *discordgo.Session, msg *discordgo.MessageCreate) {
+	// Ignore all messages created by the bot itself
+	if msg.Author.ID == s.State.User.ID {
+		return
+	}
+
+	if msg.Content == "!commands" {
+		s.ChannelMessageSend(msg.ChannelID, `
+**!user** [username]
+**!anime** [id]
+**!animelist** [username]
+**!tag** [forum tag]`)
+	}
+
+	// Has the bot been mentioned?
+	for _, user := range msg.Mentions {
+		if user.ID == discord.State.User.ID {
+			s.ChannelMessageSend(msg.ChannelID, msg.Author.Mention()+" :heart:")
+			return
+		}
+	}
+
+	if strings.HasPrefix(msg.Content, "!user ") {
+		s.ChannelMessageSend(msg.ChannelID, "https://notify.moe/+"+strings.Split(msg.Content, " ")[1])
+		return
+	}
+
+	if strings.HasPrefix(msg.Content, "!anime ") {
+		s.ChannelMessageSend(msg.ChannelID, "https://notify.moe/anime/"+strings.Split(msg.Content, " ")[1])
+		return
+	}
+
+	if strings.HasPrefix(msg.Content, "!animelist ") {
+		s.ChannelMessageSend(msg.ChannelID, "https://notify.moe/+"+strings.Split(msg.Content, " ")[1]+"/animelist")
+		return
+	}
+
+	if strings.HasPrefix(msg.Content, "!tag ") {
+		s.ChannelMessageSend(msg.ChannelID, "https://notify.moe/forum/"+strings.ToLower(strings.Split(msg.Content, " ")[1]))
+		return
+	}
+
+	if strings.HasPrefix(msg.Content, "!play ") {
+		s.UpdateStatus(0, msg.Content[len("!play "):])
+		return
+	}
+
+	if strings.HasPrefix(msg.Content, "!s ") {
+		term := msg.Content[len("!s "):]
+		users, animes, posts, threads, tracks, characters := arn.Search(term, 3, 3, 3, 3, 3, 3)
+		message := ""
+
+		for _, user := range users {
+			message += "https://notify.moe" + user.Link() + "\n"
+		}
+
+		for _, anime := range animes {
+			message += "https://notify.moe" + anime.Link() + "\n"
+		}
+
+		for _, post := range posts {
+			message += "https://notify.moe" + post.Link() + "\n"
+		}
+
+		for _, thread := range threads {
+			message += "https://notify.moe" + thread.Link() + "\n"
+		}
+
+		for _, track := range tracks {
+			message += "https://notify.moe" + track.Link() + "\n"
+		}
+
+		for _, character := range characters {
+			message += "https://notify.moe" + character.Link() + "\n"
+		}
+
+		if len(users) == 0 && len(animes) == 0 && len(posts) == 0 && len(threads) == 0 && len(tracks) == 0 {
+			message = "Sorry, I couldn't find anything using that term."
+		}
+
+		s.ChannelMessageSend(msg.ChannelID, message)
+		return
+	}
+}