mirror of
https://github.com/diamondburned/arikawa.git
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17b9c73ce3
This commit refactors the whole package gateway as well as utils/ws
(formerly utils/wsutil) and voice/voicegateway. The new refactor
utilizes a design pattern involving a concurrent loop and an arriving
event channel.
An additional change was made to the way gateway events are typed.
Before, pretty much any type will satisfy a gateway event type, since
the actual type was just interface{}. The new refactor defines a
concrete interface that events can implement:
type Event interface {
Op() OpCode
EventType() EventType
}
Using this interface, the user can easily add custom gateway events
independently of the library without relying on string maps. This adds a
lot of type safety into the library and makes type-switching on Event
types much more reasonable.
Gateway error callbacks are also almost entirely removed in favor of
custom gateway events. A catch-all can easily be added like this:
s.AddHandler(func(err error) {
log.Println("gateway error:, err")
})
62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
// Package main demonstrates a bare simple bot without a state cache. It logs
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// all messages it sees into stderr.
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package main
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import (
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"context"
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"log"
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"os"
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"github.com/diamondburned/arikawa/v3/gateway"
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"github.com/diamondburned/arikawa/v3/session/shard"
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"github.com/diamondburned/arikawa/v3/state"
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)
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// To run, do `BOT_TOKEN="TOKEN HERE" go run .`
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func main() {
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var token = os.Getenv("BOT_TOKEN")
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if token == "" {
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log.Fatalln("No $BOT_TOKEN given.")
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}
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newShard := state.NewShardFunc(func(m *shard.Manager, s *state.State) {
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// Add the needed Gateway intents.
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s.AddIntents(gateway.IntentGuildMessages)
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s.AddIntents(gateway.IntentDirectMessages)
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s.AddHandler(func(c *gateway.MessageCreateEvent) {
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_, shardIx := m.FromGuildID(c.GuildID)
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log.Println(c.Author.Tag(), "sent", c.Content, "on shard", shardIx)
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})
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})
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m, err := shard.NewManager("Bot "+token, newShard)
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if err != nil {
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log.Fatalln("failed to create shard manager:", err)
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}
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if err := m.Open(context.Background()); err != nil {
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log.Fatalln("failed to connect shards:", err)
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}
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defer m.Close()
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var shardNum int
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m.ForEach(func(s shard.Shard) {
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state := s.(*state.State)
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u, err := state.Me()
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if err != nil {
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log.Fatalln("failed to get myself:", err)
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}
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log.Printf("Shard %d/%d started as %s", shardNum, m.NumShards()-1, u.Tag())
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shardNum++
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})
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// Block forever.
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select {}
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}
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