robot, command: add quiet time

README.md

@@ -140,6 +140,7 @@ These are *not* recognized as commands:
 - `echo bocchi` causes Robot to say `bocchi`, or whatever other message you give.
 - `talk about ranked competitive marriage` gives a short description of Robot's marriage system.
 - `forget bocchi` causes Robot to forget everything she's learned from messages containing `bocchi` in the last fifteen minutes. As a special case, `forget everything` tells her to forget all messages in the last fifteen minutes.
+- `be quiet for 8 hours` has Robot stop learning and speaking for eight hours; other durations like `an hour`, `1h30m`, `until tomorrow` work as well. Some commands relating to moderation and privacy will still cause her to talk. There is a twelve hour limit on quiet time.
 
 
 ## Effects

channel/channel.go

@@ -5,6 +5,7 @@ import (
 	"regexp"
 	"sync"
 	"sync/atomic"
+	"time"
 
 	"gitlab.com/zephyrtronium/pick"
 	"golang.org/x/time/rate"
@@ -44,8 +45,15 @@ type Channel struct {
 	Emotes *pick.Dist[string]
 	// Effects is the distribution of effects.
 	Effects *pick.Dist[string]
+	// Silent is the earliest time that speaking and learning is allowed in the
+	// channel as nanoseconds from the Unix epoch.
+	Silent atomic.Int64
 	// Extra is extra channel data that may be added by commands.
 	Extra sync.Map // map[any]any; key is a type
 	// Enabled indicates whether a channel is allowed to learn messages.
 	Enabled atomic.Bool
 }
+
+func (ch *Channel) SilentTime() time.Time {
+	return time.Unix(0, ch.Silent.Load())
+}

command/marriage.go

@@ -77,6 +77,10 @@ var affections = pick.New([]pick.Case[string]{
 // Affection describes the caller's affection MMR.
 // No arguments.
 func Affection(ctx context.Context, robo *Robot, call *Invocation) {
+	if call.Message.Time().Before(call.Channel.SilentTime()) {
+		robo.Log.InfoContext(ctx, "silent", slog.Time("until", call.Channel.SilentTime()))
+		return
+	}
 	x, c, f, l, n := score(robo.Log, &call.Channel.History, call.Message.Sender.ID)
 	// Anything we do will require an emote.
 	e := call.Channel.Emotes.Pick(rand.Uint32())
@@ -111,6 +115,10 @@ type partner struct {
 // Marry proposes to the robo.
 //   - partnership: Type of partnership requested, e.g. "wife", "waifu", "daddy". Optional.
 func Marry(ctx context.Context, robo *Robot, call *Invocation) {
+	if call.Message.Time().Before(call.Channel.SilentTime()) {
+		robo.Log.InfoContext(ctx, "silent", slog.Time("until", call.Channel.SilentTime()))
+		return
+	}
 	x, _, _, _, _ := score(robo.Log, &call.Channel.History, call.Message.Sender.ID)
 	e := call.Channel.Emotes.Pick(rand.Uint32())
 	broadcaster := strings.EqualFold(call.Message.Sender.Name, strings.TrimPrefix(call.Channel.Name, "#")) && x == 0
@@ -168,6 +176,10 @@ func Marry(ctx context.Context, robo *Robot, call *Invocation) {
 // DescribeMarriage gives some exposition about the marriage system.
 // No args.
 func DescribeMarriage(ctx context.Context, robo *Robot, call *Invocation) {
+	if t := call.Channel.SilentTime(); call.Message.Time().Before(t) {
+		call.Channel.Message(ctx, message.Format("", "I'm being quiet for the next %v, so the marriage system is disabled until then.", t.Sub(call.Message.Time())).AsReply(call.Message.ID))
+		return
+	}
 	const s = `I am looking for a long series of short-term relationships and am holding a ranked competitive how-much-I-like-you tournament to decide my suitors! Politely ask me to marry you (or become your partner) and I'll evaluate your score. I like copypasta, memes, and long walks in the chat.`
 	call.Channel.Message(ctx, message.Sent{Text: s})
 }

command/moderate.go

@@ -3,7 +3,10 @@ package command
 import (
 	"context"
 	"log/slog"
+	"regexp"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/zephyrtronium/robot/message"
 )
@@ -40,3 +43,69 @@ func Forget(ctx context.Context, robo *Robot, call *Invocation) {
 		call.Channel.Message(ctx, message.Format("", "Forgot %d messages.", n).AsReply(call.Message.ID))
 	}
 }
+
+// Quiet makes the bot temporarily stop learning and speaking in the channel.
+//   - dur: Duration to stop learning and speaking. Optional.
+//   - until: Marker to stop "until tomrrow" if not empty. Optional.
+//
+// NOTE(zeph): Quiet waits for a timer which can be up to twelve hours.
+func Quiet(ctx context.Context, robo *Robot, call *Invocation) {
+	var dur time.Duration
+	switch {
+	case call.Args["dur"] == "" && call.Args["until"] == "":
+		dur = 2 * time.Hour
+	case call.Args["until"] != "":
+		// The only "until" option right now is "tomorrow".
+		dur = 12 * time.Hour
+	default:
+		if m := quietA.FindStringSubmatch(call.Args["dur"]); m != nil {
+			switch m[1][0] {
+			case 'h', 'H':
+				dur = time.Hour
+			default:
+				dur = time.Minute
+			}
+			break
+		}
+		if m := quietN.FindStringSubmatch(call.Args["dur"]); m != nil {
+			n, err := strconv.Atoi(m[1])
+			if err != nil {
+				// Should be impossible.
+				call.Channel.Message(ctx, message.Format("", `sorry? (%v)`, err).AsReply(call.Message.ID))
+				return
+			}
+			switch m[2][0] {
+			case 'h', 'H':
+				dur = time.Hour * time.Duration(n)
+			default:
+				dur = time.Minute * time.Duration(n)
+			}
+			break
+		}
+		var err error
+		dur, err = time.ParseDuration(call.Args["dur"])
+		if err != nil {
+			call.Channel.Message(ctx, message.Format("", `sorry? (%v)`, err).AsReply(call.Message.ID))
+			return
+		}
+	}
+	if dur > 12*time.Hour {
+		dur = 12 * time.Hour
+	}
+	call.Channel.Silent.Store(call.Message.Time().Add(dur).UnixNano())
+	robo.Log.InfoContext(ctx, "silent", slog.Duration("duration", dur), slog.Time("until", call.Channel.SilentTime()))
+	call.Channel.Message(ctx, message.Format("", `I won't talk or learn for %v. Some commands relating to moderation and privacy will still make me talk. I'll mention when quiet time is up.`, dur).AsReply(call.Message.ID))
+	t := time.NewTimer(dur)
+	defer t.Stop()
+	select {
+	case <-ctx.Done():
+		return
+	case <-t.C:
+		call.Channel.Message(ctx, message.Format("", `@%s My quiet time has ended.`, call.Message.Sender.Name))
+	}
+}
+
+var (
+	quietA = regexp.MustCompile(`(?i)^an?\s+(ho?u?r|mi?n)`)
+	quietN = regexp.MustCompile(`(?i)^(\d+)\s+(ho?u?r|mi?n)`)
+)

command/talk.go

@@ -13,6 +13,10 @@ import (
 )
 
 func speakCmd(ctx context.Context, robo *Robot, call *Invocation, effect string) string {
+	if call.Message.Time().Before(call.Channel.SilentTime()) {
+		robo.Log.InfoContext(ctx, "silent", slog.Time("until", call.Channel.SilentTime()))
+		return ""
+	}
 	// Don't continue prompts that look like they start with TMI commands
 	// (even though those don't do anything anymore).
 	if ngPrompt.MatchString(call.Args["prompt"]) {
@@ -108,6 +112,10 @@ func AAAAA(ctx context.Context, robo *Robot, call *Invocation) {
 
 // Rawr says rawr.
 func Rawr(ctx context.Context, robo *Robot, call *Invocation) {
+	if call.Message.Time().Before(call.Channel.SilentTime()) {
+		robo.Log.InfoContext(ctx, "silent", slog.Time("until", call.Channel.SilentTime()))
+		return
+	}
 	e := call.Channel.Emotes.Pick(rand.Uint32())
 	if e == "" {
 		e = ":3"

privmsg.go

@@ -46,6 +46,13 @@ func (robo *Robot) tmiMessage(ctx context.Context, send chan<- *tmi.Message, msg
 		return
 	}
 	ch.History.Add(m.Time(), m)
+	// Check for the channel being silent. This prevents learning, copypasta,
+	// and random speaking (among other things), which happens to be all the
+	// rest of this function.
+	if s := ch.SilentTime(); msg.Time().Before(s) {
+		log.DebugContext(ctx, "channel is silent", slog.Time("until", s))
+		return
+	}
 	// If the message is a reply to e.g. Bocchi, TMI adds @Bocchi to the
 	// start of the message text.
 	// That's helpful for commands, which we've already processed, but
@@ -364,6 +371,11 @@ var twitchMod = []twitchCommand{
 		fn:    command.Forget,
 		name:  "forget",
 	},
+	{
+		parse: regexp.MustCompile(`(?i)^(?:be\s+quiet|shut\s*up|stfu)(?:\s+for\s+(?P<dur>(?:\d+[hms]){1,3}|an\s+h(?:ou)?r|\d+\s+h(?:ou)?rs?|a\s+min(?:ute)?|\d+\s+min(?:ute)?s?)|\s+until\s+(?P<until>tomorrow))?$`),
+		fn:    command.Quiet,
+		name:  "quiet",
+	},
 }
 
 var twitchAny = []twitchCommand{