154 lines
2.8 KiB
Go
154 lines
2.8 KiB
Go
package discord
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import (
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"fmt"
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"sync"
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"errors"
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"strings"
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"github.com/bwmarrin/discordgo"
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"github.com/micro/cli/v2"
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"github.com/micro/go-micro/v3/agent/input"
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)
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func init() {
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input.Inputs["discord"] = newInput()
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}
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func newInput() *discordInput {
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return &discordInput{}
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}
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type discordInput struct {
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token string
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whitelist []string
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prefix string
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prefixfn func(string) (string, bool)
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botID string
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session *discordgo.Session
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sync.Mutex
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running bool
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exit chan struct{}
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}
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func (d *discordInput) Flags() []cli.Flag {
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return []cli.Flag{
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&cli.StringFlag{
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Name: "discord_token",
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EnvVars: []string{"MICRO_DISCORD_TOKEN"},
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Usage: "Discord token (prefix with Bot if it's for bot account)",
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},
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&cli.StringFlag{
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Name: "discord_whitelist",
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EnvVars: []string{"MICRO_DISCORD_WHITELIST"},
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Usage: "Discord Whitelist (seperated by ,)",
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},
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&cli.StringFlag{
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Name: "discord_prefix",
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Usage: "Discord Prefix",
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EnvVars: []string{"MICRO_DISCORD_PREFIX"},
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Value: "Micro ",
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},
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}
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}
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func (d *discordInput) Init(ctx *cli.Context) error {
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token := ctx.String("discord_token")
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whitelist := ctx.String("discord_whitelist")
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prefix := ctx.String("discord_prefix")
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if len(token) == 0 {
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return errors.New("require token")
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}
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d.token = token
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d.prefix = prefix
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if len(whitelist) > 0 {
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d.whitelist = strings.Split(whitelist, ",")
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}
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return nil
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}
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func (d *discordInput) Start() error {
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if len(d.token) == 0 {
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return errors.New("missing discord configuration")
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}
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d.Lock()
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defer d.Unlock()
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if d.running {
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return nil
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}
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var err error
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d.session, err = discordgo.New("Bot " + d.token)
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if err != nil {
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return err
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}
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u, err := d.session.User("@me")
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if err != nil {
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return err
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}
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d.botID = u.ID
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d.prefixfn = CheckPrefixFactory(fmt.Sprintf("<@%s> ", d.botID), fmt.Sprintf("<@!%s> ", d.botID), d.prefix)
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d.exit = make(chan struct{})
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d.running = true
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return nil
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}
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func (d *discordInput) Stream() (input.Conn, error) {
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d.Lock()
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defer d.Unlock()
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if !d.running {
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return nil, errors.New("not running")
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}
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//Fire-n-forget close just in case...
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d.session.Close()
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conn := newConn(d)
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if err := d.session.Open(); err != nil {
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return nil, err
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}
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return conn, nil
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}
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func (d *discordInput) Stop() error {
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d.Lock()
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defer d.Unlock()
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if !d.running {
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return nil
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}
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close(d.exit)
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d.running = false
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return nil
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}
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func (d *discordInput) String() string {
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return "discord"
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}
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// CheckPrefixFactory Creates a prefix checking function and stuff.
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func CheckPrefixFactory(prefixes ...string) func(string) (string, bool) {
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return func(content string) (string, bool) {
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for _, prefix := range prefixes {
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if strings.HasPrefix(content, prefix) {
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return strings.TrimPrefix(content, prefix), true
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}
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}
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return "", false
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}
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}
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