Rewrite from TypeScript to Go

Complete rewrite of the Freebee Matrix bot as GogoBee using mautrix-go.

- E2EE with goolm (pure Go, no CGo/libolm) and cross-signing bootstrap
- 35+ plugins with dependency injection and ordered registration
- SQLite storage via modernc.org/sqlite (no CGo)
- Scheduler via robfig/cron for WOTD, holidays, birthdays, releases, etc.
- Optional LLM integration (Ollama) for sentiment, profanity, roasts, vibes
- Threaded trivia, three-tier profanity tracking, WOTD usage verification
- Multi-country holiday support with deduplication
- Quadratic XP curve, configurable bot display name, encrypted DMs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/plugin/vibe.go

@@ -0,0 +1,221 @@
+package plugin
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+	"strings"
+	"sync"
+	"time"
+
+	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/id"
+)
+
+const (
+	vibeBufferSize   = 50
+	vibeCooldownMins = 5
+	vibeMinMessages  = 10
+)
+
+type bufferedMessage struct {
+	Sender string
+	Body   string
+	Time   time.Time
+}
+
+// VibePlugin uses LLM to describe room energy or summarize conversation.
+type VibePlugin struct {
+	Base
+	mu        sync.Mutex
+	buffers   map[id.RoomID][]bufferedMessage
+	cooldowns map[id.RoomID]time.Time
+}
+
+// NewVibePlugin creates a new vibe plugin.
+func NewVibePlugin(client *mautrix.Client) *VibePlugin {
+	return &VibePlugin{
+		Base:      NewBase(client),
+		buffers:   make(map[id.RoomID][]bufferedMessage),
+		cooldowns: make(map[id.RoomID]time.Time),
+	}
+}
+
+func (p *VibePlugin) Name() string { return "vibe" }
+
+func (p *VibePlugin) Commands() []CommandDef {
+	return []CommandDef{
+		{Name: "vibe", Description: "LLM describes the current room energy", Usage: "!vibe", Category: "LLM & Sentiment"},
+		{Name: "tldr", Description: "LLM summarizes recent conversation", Usage: "!tldr", Category: "LLM & Sentiment"},
+	}
+}
+
+func (p *VibePlugin) Init() error { return nil }
+
+func (p *VibePlugin) OnReaction(_ ReactionContext) error { return nil }
+
+func (p *VibePlugin) OnMessage(ctx MessageContext) error {
+	// Always buffer messages (except commands)
+	if !ctx.IsCommand {
+		p.addToBuffer(ctx)
+	}
+
+	if p.IsCommand(ctx.Body, "vibe") {
+		return p.handleVibe(ctx)
+	}
+	if p.IsCommand(ctx.Body, "tldr") {
+		return p.handleTLDR(ctx)
+	}
+
+	return nil
+}
+
+func (p *VibePlugin) addToBuffer(ctx MessageContext) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	buf := p.buffers[ctx.RoomID]
+	buf = append(buf, bufferedMessage{
+		Sender: string(ctx.Sender),
+		Body:   ctx.Body,
+		Time:   time.Now().UTC(),
+	})
+
+	// Keep only the last N messages
+	if len(buf) > vibeBufferSize {
+		buf = buf[len(buf)-vibeBufferSize:]
+	}
+
+	p.buffers[ctx.RoomID] = buf
+}
+
+func (p *VibePlugin) getBuffer(roomID id.RoomID) []bufferedMessage {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	buf := p.buffers[roomID]
+	// Return a copy
+	result := make([]bufferedMessage, len(buf))
+	copy(result, buf)
+	return result
+}
+
+func (p *VibePlugin) checkCooldown(roomID id.RoomID) bool {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	last, ok := p.cooldowns[roomID]
+	if ok && time.Since(last) < vibeCooldownMins*time.Minute {
+		return false
+	}
+	p.cooldowns[roomID] = time.Now()
+	return true
+}
+
+func (p *VibePlugin) resetCooldown(roomID id.RoomID) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	delete(p.cooldowns, roomID)
+}
+
+func (p *VibePlugin) handleVibe(ctx MessageContext) error {
+	ollamaHost := os.Getenv("OLLAMA_HOST")
+	ollamaModel := os.Getenv("OLLAMA_MODEL")
+	if ollamaHost == "" || ollamaModel == "" {
+		return p.SendReply(ctx.RoomID, ctx.EventID, "LLM is not configured.")
+	}
+
+	buf := p.getBuffer(ctx.RoomID)
+	if len(buf) < vibeMinMessages {
+		return p.SendReply(ctx.RoomID, ctx.EventID,
+			fmt.Sprintf("Need at least %d messages to read the vibe. Currently have %d.", vibeMinMessages, len(buf)))
+	}
+
+	if !p.checkCooldown(ctx.RoomID) {
+		return p.SendReply(ctx.RoomID, ctx.EventID,
+			fmt.Sprintf("Vibe check is on cooldown. Try again in %d minutes.", vibeCooldownMins))
+	}
+
+	botName := os.Getenv("BOT_DISPLAY_NAME")
+	if botName == "" {
+		botName = "GogoBee"
+	}
+	transcript := formatTranscript(buf)
+	prompt := fmt.Sprintf(
+		`You are %s, a fun community bot. Based on the following recent chat messages, describe the current "vibe" or energy of the room in 2-3 sentences. Be creative, playful, and use colorful language. Reference specific topics or dynamics you notice.
+
+Recent messages:
+%s
+
+Describe the room's current vibe:`, botName, transcript)
+
+	if err := p.SendReply(ctx.RoomID, ctx.EventID, "Reading the room..."); err != nil {
+		slog.Error("vibe: send thinking", "err", err)
+	}
+
+	response, err := callOllama(ollamaHost, ollamaModel, prompt)
+	if err != nil {
+		slog.Error("vibe: ollama call", "err", err)
+		p.resetCooldown(ctx.RoomID) // Don't consume cooldown on failure
+		return p.SendReply(ctx.RoomID, ctx.EventID, "Failed to read the vibe. LLM might be offline.")
+	}
+
+	return p.SendMessage(ctx.RoomID, response)
+}
+
+func (p *VibePlugin) handleTLDR(ctx MessageContext) error {
+	ollamaHost := os.Getenv("OLLAMA_HOST")
+	ollamaModel := os.Getenv("OLLAMA_MODEL")
+	if ollamaHost == "" || ollamaModel == "" {
+		return p.SendReply(ctx.RoomID, ctx.EventID, "LLM is not configured.")
+	}
+
+	buf := p.getBuffer(ctx.RoomID)
+	if len(buf) < vibeMinMessages {
+		return p.SendReply(ctx.RoomID, ctx.EventID,
+			fmt.Sprintf("Need at least %d messages for a summary. Currently have %d.", vibeMinMessages, len(buf)))
+	}
+
+	if !p.checkCooldown(ctx.RoomID) {
+		return p.SendReply(ctx.RoomID, ctx.EventID,
+			fmt.Sprintf("TLDR is on cooldown. Try again in %d minutes.", vibeCooldownMins))
+	}
+
+	tldrBotName := os.Getenv("BOT_DISPLAY_NAME")
+	if tldrBotName == "" {
+		tldrBotName = "GogoBee"
+	}
+	transcript := formatTranscript(buf)
+	prompt := fmt.Sprintf(
+		`You are %s, a community bot. Summarize the following recent chat conversation in 3-5 concise bullet points. Focus on the main topics discussed, any decisions made, and key moments. Be brief and informative.
+
+Recent messages:
+%s
+
+Summary:`, tldrBotName, transcript)
+
+	if err := p.SendReply(ctx.RoomID, ctx.EventID, "Summarizing the conversation..."); err != nil {
+		slog.Error("vibe: send thinking", "err", err)
+	}
+
+	response, err := callOllama(ollamaHost, ollamaModel, prompt)
+	if err != nil {
+		slog.Error("vibe: ollama call", "err", err)
+		p.resetCooldown(ctx.RoomID) // Don't consume cooldown on failure
+		return p.SendReply(ctx.RoomID, ctx.EventID, "Failed to summarize. LLM might be offline.")
+	}
+
+	return p.SendMessage(ctx.RoomID, response)
+}
+
+func formatTranscript(messages []bufferedMessage) string {
+	var sb strings.Builder
+	for _, m := range messages {
+		// Truncate long messages
+		body := m.Body
+		if len(body) > 300 {
+			body = body[:300] + "..."
+		}
+		sb.WriteString(fmt.Sprintf("[%s] %s: %s\n", m.Time.Format("15:04"), m.Sender, body))
+	}
+	return sb.String()
+}