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/reactions.go

@@ -0,0 +1,159 @@
+package plugin
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"log/slog"
+	"strings"
+
+	"gogobee/internal/db"
+
+	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/id"
+)
+
+// ReactionsPlugin logs reactions and provides emoji usage statistics.
+type ReactionsPlugin struct {
+	Base
+}
+
+// NewReactionsPlugin creates a new reactions plugin.
+func NewReactionsPlugin(client *mautrix.Client) *ReactionsPlugin {
+	return &ReactionsPlugin{
+		Base: NewBase(client),
+	}
+}
+
+func (p *ReactionsPlugin) Name() string { return "reactions" }
+
+func (p *ReactionsPlugin) Commands() []CommandDef {
+	return []CommandDef{
+		{Name: "emojiboard", Description: "Top emoji givers, receivers, and most used emojis", Usage: "!emojiboard", Category: "Reactions"},
+	}
+}
+
+func (p *ReactionsPlugin) Init() error { return nil }
+
+func (p *ReactionsPlugin) OnMessage(ctx MessageContext) error {
+	if p.IsCommand(ctx.Body, "emojiboard") {
+		return p.handleEmojiboard(ctx)
+	}
+	return nil
+}
+
+func (p *ReactionsPlugin) OnReaction(ctx ReactionContext) error {
+	// Resolve the target event's sender via Matrix API
+	targetUser, err := p.resolveEventSender(ctx.RoomID, ctx.TargetEvent)
+	if err != nil {
+		slog.Error("reactions: resolve target event sender", "err", err, "event", ctx.TargetEvent)
+		return nil // Don't fail the whole handler
+	}
+
+	// Don't log self-reactions
+	if ctx.Sender == targetUser {
+		return nil
+	}
+
+	d := db.Get()
+	_, err = d.Exec(
+		`INSERT INTO reaction_log (room_id, event_id, sender, target_user, emoji) VALUES (?, ?, ?, ?, ?)`,
+		string(ctx.RoomID), string(ctx.TargetEvent), string(ctx.Sender), string(targetUser), ctx.Emoji,
+	)
+	if err != nil {
+		slog.Error("reactions: log reaction", "err", err)
+	}
+
+	return nil
+}
+
+// resolveEventSender fetches an event from the Matrix API to determine its sender.
+func (p *ReactionsPlugin) resolveEventSender(roomID id.RoomID, eventID id.EventID) (id.UserID, error) {
+	evt, err := p.Client.GetEvent(context.Background(), roomID, eventID)
+	if err != nil {
+		return "", fmt.Errorf("get event %s: %w", eventID, err)
+	}
+	return evt.Sender, nil
+}
+
+func (p *ReactionsPlugin) handleEmojiboard(ctx MessageContext) error {
+	d := db.Get()
+	var sb strings.Builder
+
+	// Top 10 emoji givers
+	sb.WriteString("--- Top 10 Emoji Givers ---\n\n")
+	rows, err := d.Query(
+		`SELECT sender, COUNT(*) as cnt FROM reaction_log GROUP BY sender ORDER BY cnt DESC LIMIT 10`,
+	)
+	if err != nil {
+		slog.Error("reactions: givers query", "err", err)
+		return p.SendReply(ctx.RoomID, ctx.EventID, "Failed to load emojiboard.")
+	}
+	giverCount := appendUserBoard(&sb, rows)
+	rows.Close()
+
+	// Top 10 emoji receivers
+	sb.WriteString("\n--- Top 10 Emoji Receivers ---\n\n")
+	rows, err = d.Query(
+		`SELECT target_user, COUNT(*) as cnt FROM reaction_log GROUP BY target_user ORDER BY cnt DESC LIMIT 10`,
+	)
+	if err != nil {
+		slog.Error("reactions: receivers query", "err", err)
+		return p.SendReply(ctx.RoomID, ctx.EventID, "Failed to load emojiboard.")
+	}
+	receiverCount := appendUserBoard(&sb, rows)
+	rows.Close()
+
+	// Top 10 most used emojis
+	sb.WriteString("\n--- Top 10 Most Used Emojis ---\n\n")
+	rows, err = d.Query(
+		`SELECT emoji, COUNT(*) as cnt FROM reaction_log GROUP BY emoji ORDER BY cnt DESC LIMIT 10`,
+	)
+	if err != nil {
+		slog.Error("reactions: emoji query", "err", err)
+		return p.SendReply(ctx.RoomID, ctx.EventID, "Failed to load emojiboard.")
+	}
+	emojiCount := appendEmojiBoard(&sb, rows)
+	rows.Close()
+
+	if giverCount == 0 && receiverCount == 0 && emojiCount == 0 {
+		return p.SendReply(ctx.RoomID, ctx.EventID, "No reaction data yet.")
+	}
+
+	return p.SendReply(ctx.RoomID, ctx.EventID, sb.String())
+}
+
+// appendUserBoard writes ranked user lines from query rows.
+func appendUserBoard(sb *strings.Builder, rows *sql.Rows) int {
+	medals := []string{"🥇", "🥈", "🥉"}
+	i := 0
+	for rows.Next() {
+		var name string
+		var cnt int
+		if err := rows.Scan(&name, &cnt); err != nil {
+			continue
+		}
+		prefix := fmt.Sprintf("#%d", i+1)
+		if i < len(medals) {
+			prefix = medals[i]
+		}
+		sb.WriteString(fmt.Sprintf("%s %s — %s reactions\n", prefix, name, formatNumber(cnt)))
+		i++
+	}
+	return i
+}
+
+// appendEmojiBoard writes ranked emoji lines.
+func appendEmojiBoard(sb *strings.Builder, rows *sql.Rows) int {
+	i := 0
+	for rows.Next() {
+		var emoji string
+		var cnt int
+		if err := rows.Scan(&emoji, &cnt); err != nil {
+			continue
+		}
+		sb.WriteString(fmt.Sprintf("%d. %s — %s times\n", i+1, emoji, formatNumber(cnt)))
+		i++
+	}
+	return i
+}