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router.go
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router.go
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package gumi
import (
"fmt"
"strings"
"github.com/VTGare/gumi/utils"
"github.com/bwmarrin/discordgo"
)
type Router struct {
Commands map[string]*Command
CaseSensitive bool
AuthorID string
Storage *Storage
PrefixResolver func(*discordgo.Session, *discordgo.MessageCreate) []string
NotCommandCallback func(*Ctx) error
OnErrorCallback func(*Ctx, error)
OnRateLimitCallback func(*Ctx) error
OnNoPermissionsCallback func(*Ctx) error
OnNSFWCallback func(*Ctx) error
OnExecuteCallback func(*Ctx) error
OnPanicCallBack func(ctx *Ctx, recover interface{})
}
func (r *Router) RegisterCmd(command *Command) {
name := command.Name
if !r.CaseSensitive {
name = strings.ToLower(command.Name)
}
r.Commands[name] = command
for _, alias := range command.Aliases {
if !r.CaseSensitive {
alias = strings.ToLower(alias)
}
r.Commands[alias] = command
}
}
func Create(r *Router) *Router {
if r.Commands == nil {
r.Commands = make(map[string]*Command)
}
if r.PrefixResolver == nil {
r.PrefixResolver = func(s *discordgo.Session, m *discordgo.MessageCreate) []string {
return []string{"!"}
}
}
if r.OnErrorCallback == nil {
r.OnErrorCallback = func(ctx *Ctx, err error) {
ctx.Reply(fmt.Sprintf("An error occurred: %v", err))
}
}
if r.OnPanicCallBack == nil {
r.OnPanicCallBack = func(ctx *Ctx, rec interface{}) {
fmt.Println("Recovering from panic. Error: ", rec)
if err, ok := rec.(error); ok {
r.OnErrorCallback(ctx, err)
}
}
}
r.Storage = &Storage{
innerMap: make(map[string]interface{}),
}
return r
}
func (r *Router) Initialize(session *discordgo.Session) {
session.AddHandler(r.Handler())
}
func (r *Router) Handler() func(*discordgo.Session, *discordgo.MessageCreate) {
return func(session *discordgo.Session, event *discordgo.MessageCreate) {
ctx := &Ctx{}
defer func() {
if rec := recover(); rec != nil {
r.OnPanicCallBack(ctx, rec)
}
}()
var (
message = event.Message
content = event.Message.Content
)
if message.Author.Bot {
return
}
hasPrefix, content := utils.HasPrefixes(content, r.PrefixResolver(session, event), r.CaseSensitive)
if !hasPrefix {
if r.NotCommandCallback != nil {
ctx = &Ctx{
Session: session,
Event: event,
Router: r,
}
err := r.NotCommandCallback(ctx)
if err != nil {
r.OnErrorCallback(ctx, err)
}
}
return
}
content = strings.Trim(content, " ")
if content == "" {
return
}
cmdName := strings.Split(content, " ")[0]
content = strings.TrimPrefix(content, cmdName)
if !r.CaseSensitive {
cmdName = strings.ToLower(cmdName)
}
if cmd, ok := r.Commands[cmdName]; ok {
ctx = &Ctx{
Session: session,
Event: event,
Args: ParseArguments(content),
Router: r,
Command: cmd,
}
err := cmd.execute(ctx)
if err != nil {
if r.OnErrorCallback != nil {
r.OnErrorCallback(ctx, err)
}
return
}
}
}
}