hobokenchicken
13bd4478f6
Root cause: makeSender requires bot_servers membership, but create flow never auto-added bots when users only picked a channel. - Start() resolves config.channel_id → server and upserts bot_servers - Confess cursor uses (created_at,id) so deletes don't stall polling
105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package bot
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"strings"
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"time"
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)
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// ConfessConfig: "channel_id" is where anonymous confessions land.
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type ConfessConfig struct {
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ChannelID string `json:"channel_id"`
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}
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// ConfessBot watches for /confess messages, deletes the original, reposts anonymously.
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func ConfessBot(ctx context.Context, db *sql.DB, raw json.RawMessage, send SendMessageFunc) {
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var cfg ConfessConfig
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if err := json.Unmarshal(raw, &cfg); err != nil || cfg.ChannelID == "" {
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return
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}
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// Cursor is (created_at, id) in memory so deletes don't break polling.
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var lastAt time.Time
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var lastID string
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seeded := false
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ticker := time.NewTicker(10 * time.Second)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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confessPoll(db, cfg.ChannelID, &seeded, &lastAt, &lastID, send)
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}
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}
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}
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func confessPoll(db *sql.DB, targetChannel string, seeded *bool, lastAt *time.Time, lastID *string, send SendMessageFunc) {
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if !*seeded {
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var at sql.NullTime
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var id sql.NullString
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_ = db.QueryRowContext(context.Background(),
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`SELECT created_at, id::text FROM messages ORDER BY created_at DESC, id DESC LIMIT 1`,
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).Scan(&at, &id)
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if at.Valid {
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*lastAt = at.Time
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}
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if id.Valid {
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*lastID = id.String
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}
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*seeded = true
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return
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}
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rows, err := db.QueryContext(context.Background(), `
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SELECT m.id::text, m.created_at, m.content
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FROM messages m
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WHERE m.bot_id IS NULL
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AND lower(m.content) LIKE '/confess%'
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AND (m.created_at, m.id) > ($1::timestamptz, $2::uuid)
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ORDER BY m.created_at ASC, m.id ASC
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LIMIT 20
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`, *lastAt, nullUUID(*lastID))
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if err != nil {
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return
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}
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defer rows.Close()
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for rows.Next() {
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var id string
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var createdAt time.Time
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var content string
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if err := rows.Scan(&id, &createdAt, &content); err != nil {
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continue
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}
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*lastAt = createdAt
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*lastID = id
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rest := content
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if len(rest) >= 8 && strings.EqualFold(rest[:8], "/confess") {
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rest = rest[8:]
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}
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text := strings.TrimSpace(rest)
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if text == "" {
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continue
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}
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// Delete original so author isn't exposed in chat history.
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_, _ = db.ExecContext(context.Background(), `DELETE FROM messages WHERE id = $1::uuid`, id)
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send(targetChannel, fmt.Sprintf("🕵️ **anonymous confession:** %s", text))
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}
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}
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// nullUUID returns a zero UUID when empty so the first post-seed poll still works.
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func nullUUID(id string) string {
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if id == "" {
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return "00000000-0000-0000-0000-000000000000"
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}
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return id
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}
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