forked from kageru/discord-selphybot
97 lines
3.1 KiB
Go
97 lines
3.1 KiB
Go
package main
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import (
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"fmt"
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"github.com/bwmarrin/discordgo"
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"strings"
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"log"
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"regexp"
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)
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type CommandType int
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const (
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CommandTypePrefix CommandType = 0
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CommandTypeFullMatch CommandType = 1
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CommandTypeRegex CommandType = 2
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)
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type Command struct {
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Trigger string // must be specified
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Output string // no output if unspecified
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OutputEmbed *discordgo.MessageEmbed // no embed output if unspecified
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Type CommandType // defaults to Prefix
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OutputIsReply bool // defaults to false
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DeleteInput bool // defaults to false
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DMOnly bool // defaults to false
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AdminOnly bool // defaults to false
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IsEmbed bool // defaults to false
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// for custom commands that go beyond prints and deletions
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Function func(*discordgo.Session, *discordgo.MessageCreate)
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}
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func registerCommand(command Command) {
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if command.Trigger == "" {
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fmt.Println("Cannot register a command with no trigger. Skipping.")
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return
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}
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commands = append(commands, command)
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}
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func evaluateMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
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if m.Author.ID == s.State.User.ID {
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log.Printf("<Self> %s", m.Content)
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return
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}
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for _, command := range commands {
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switch command.Type {
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case CommandTypePrefix:
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if strings.HasPrefix(m.Content, command.Trigger) {
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executeCommand(s, m, command)
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return
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}
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case CommandTypeFullMatch:
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if m.Content == command.Trigger {
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executeCommand(s, m, command)
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return
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}
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case CommandTypeRegex:
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match, _ := regexp.MatchString(command.Trigger, m.Content)
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if match {
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executeCommand(s, m, command)
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return
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}
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}
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}
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}
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func executeCommand(session *discordgo.Session, message *discordgo.MessageCreate, command Command) {
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if (!command.DMOnly || (getChannel(session.State, message.ChannelID).Type == discordgo.ChannelTypeDM)) &&
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(!command.AdminOnly || (message.Author.ID == config.AdminID)) {
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if command.Function == nil {
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// simple reply
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if command.OutputEmbed == nil {
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messageContent := generateReply(message, command)
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session.ChannelMessageSend(message.ChannelID, messageContent)
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} else {
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session.ChannelMessageSendEmbed(message.ChannelID, command.OutputEmbed)
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}
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if command.DeleteInput {
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session.ChannelMessageDelete(message.ChannelID, message.ID)
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}
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}
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} else {
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log.Printf("Denied command %s to user %s.", command.Trigger, userToString(message.Author))
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}
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}
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func generateReply(message *discordgo.MessageCreate, command Command) string {
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output := command.Output
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if command.OutputIsReply {
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output = fmt.Sprintf(output, message.Author.ID)
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}
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return output
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}
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