micro/agent/input/discord/conn.go

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2019-05-31 02:18:41 +03:00
package discord
import (
"errors"
"strings"
"sync"
"github.com/bwmarrin/discordgo"
"github.com/micro/go-micro/v2/agent/input"
"github.com/micro/go-micro/v2/logger"
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)
type discordConn struct {
master *discordInput
exit chan struct{}
recv chan *discordgo.Message
sync.Mutex
}
func newConn(master *discordInput) *discordConn {
conn := &discordConn{
master: master,
exit: make(chan struct{}),
recv: make(chan *discordgo.Message),
}
conn.master.session.AddHandler(func(s *discordgo.Session, m *discordgo.MessageCreate) {
if m.Author.ID == master.botID {
return
}
whitelisted := false
for _, ID := range conn.master.whitelist {
if m.Author.ID == ID {
whitelisted = true
break
}
}
if len(master.whitelist) > 0 && !whitelisted {
return
}
var valid bool
m.Message.Content, valid = conn.master.prefixfn(m.Message.Content)
if !valid {
return
}
conn.recv <- m.Message
})
return conn
}
func (dc *discordConn) Recv(event *input.Event) error {
for {
select {
case <-dc.exit:
return errors.New("connection closed")
case msg := <-dc.recv:
event.From = msg.ChannelID + ":" + msg.Author.ID
event.To = dc.master.botID
event.Type = input.TextEvent
event.Data = []byte(msg.Content)
return nil
}
}
}
func (dc *discordConn) Send(e *input.Event) error {
fields := strings.Split(e.To, ":")
_, err := dc.master.session.ChannelMessageSend(fields[0], string(e.Data))
if err != nil {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("[bot][loop][send]", err)
}
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}
return nil
}
func (dc *discordConn) Close() error {
if err := dc.master.session.Close(); err != nil {
return err
}
select {
case <-dc.exit:
return nil
default:
close(dc.exit)
}
return nil
}