main.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"os/signal"
 	"syscall"
+	"strings"
 
 	"github.com/BurntSushi/toml"
 	"github.com/bwmarrin/discordgo"
@@ -26,6 +27,7 @@ type Config struct {
 
 type Discord struct {
 	Token   string `toml:"client"`
+	AppID	string	`toml:"appid"`
 	GuildID string `toml:"guildid"`
 }
 
@@ -52,7 +54,6 @@ func connectDb(config Config) (*sql.DB, error) {
 		config.Database.Password,
 		config.Database.Name,
 	)
-	log.Println(connectionString)
 
 	db, err := sql.Open("postgres", connectionString)
 	if err != nil {
@@ -90,6 +91,149 @@ func init() {
 	}
 }
 
+func searchLink(message, format, sep string) string {
+	return fmt.Sprintf(format, strings.Join(
+		strings.Split(
+			message,
+			" ",
+		),
+		sep,
+	))
+}
+
+var (
+	commands = []discordgo.ApplicationCommand{
+		{
+			Name: "rickroll-em",
+			Type: discordgo.UserApplicationCommand,
+		},
+		{
+			Name: "google-it",
+			Type: discordgo.MessageApplicationCommand,
+		},
+		{
+			Name: "stackoverflow-it",
+			Type: discordgo.MessageApplicationCommand,
+		},
+		{
+			Name: "godoc-it",
+			Type: discordgo.MessageApplicationCommand,
+		},
+		{
+			Name: "discordjs-it",
+			Type: discordgo.MessageApplicationCommand,
+		},
+		{
+			Name: "discordpy-it",
+			Type: discordgo.MessageApplicationCommand,
+		},
+	}
+	commandsHandlers = map[string]func(s *discordgo.Session, i *discordgo.InteractionCreate){
+		"rickroll-em": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: "Operation rickroll has begun",
+					Flags:   discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+
+			ch, err := s.UserChannelCreate(
+				i.ApplicationCommandData().TargetID,
+			)
+			if err != nil {
+				_, err = s.FollowupMessageCreate(i.Interaction, true, &discordgo.WebhookParams{
+					Content: fmt.Sprintf("Mission failed. Cannot send a message to this user: %q", err.Error()),
+					Flags:   discordgo.MessageFlagsEphemeral,
+				})
+				if err != nil {
+					panic(err)
+				}
+			}
+			_, err = s.ChannelMessageSend(
+				ch.ID,
+				fmt.Sprintf("%s sent you this: https://youtu.be/dQw4w9WgXcQ", i.Member.Mention()),
+			)
+			if err != nil {
+				panic(err)
+			}
+		},
+		"google-it": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: searchLink(
+						i.ApplicationCommandData().Resolved.Messages[i.ApplicationCommandData().TargetID].Content,
+						"https://google.com/search?q=%s", "+"),
+					Flags: discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+		},
+		"stackoverflow-it": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: searchLink(
+						i.ApplicationCommandData().Resolved.Messages[i.ApplicationCommandData().TargetID].Content,
+						"https://stackoverflow.com/search?q=%s", "+"),
+					Flags: discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+		},
+		"godoc-it": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: searchLink(
+						i.ApplicationCommandData().Resolved.Messages[i.ApplicationCommandData().TargetID].Content,
+						"https://pkg.go.dev/search?q=%s", "+"),
+					Flags: discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+		},
+		"discordjs-it": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: searchLink(
+						i.ApplicationCommandData().Resolved.Messages[i.ApplicationCommandData().TargetID].Content,
+						"https://discord.js.org/#/docs/main/stable/search?query=%s", "+"),
+					Flags: discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+		},
+		"discordpy-it": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: searchLink(
+						i.ApplicationCommandData().Resolved.Messages[i.ApplicationCommandData().TargetID].Content,
+						"https://discordpy.readthedocs.io/en/stable/search.html?q=%s", "+"),
+					Flags: discordgo.MessageFlagsEphemeral,
+				},
+			})
+			if err != nil {
+				panic(err)
+			}
+		},
+	}
+)
+
 func main() {
 	if client == nil {
 		log.Println("Bot client is not initialized")
@@ -100,6 +244,25 @@ func main() {
 		log.Println("Bot is online")
 	})
 
+	
+	client.AddHandler(func(client *discordgo.Session, i *discordgo.InteractionCreate) {
+		if h, ok := commandsHandlers[i.ApplicationCommandData().Name]; ok {
+			h(client, i)
+		}
+	})
+
+	cmdIDs := make(map[string]string, len(commands))
+
+	for _, cmd := range commands {
+		rcmd, err := client.ApplicationCommandCreate(config.Discord.AppID, config.Discord.GuildID, &cmd)
+		if err != nil {
+			log.Fatalf("Cannot create slash command %q: %v", cmd.Name, err)
+		}
+
+		cmdIDs[rcmd.ID] = rcmd.Name
+
+	}
+
 	err := client.Open()
 	if err != nil {
 		log.Println("Error opening connection:", err)