feat(access): add guest chat ACL (#235)

internal/db/sqlc/messages.sql.go

@@ -543,3 +543,69 @@ func (q *Queries) ListMessagesSince(ctx context.Context, arg ListMessagesSincePa
 	}
 	return items, nil
 }
+
+const listObservedConversationsByChannelIdentity = `-- name: ListObservedConversationsByChannelIdentity :many
+SELECT
+  r.id AS route_id,
+  r.channel_type AS channel,
+  COALESCE(r.conversation_type, '') AS conversation_type,
+  r.external_conversation_id AS conversation_id,
+  COALESCE(r.external_thread_id, '') AS thread_id,
+  COALESCE(r.metadata->>'conversation_name', '')::text AS conversation_name,
+  MAX(m.created_at)::timestamptz AS last_observed_at
+FROM bot_history_messages m
+JOIN bot_channel_routes r ON r.id = m.route_id
+WHERE m.bot_id = $1
+  AND m.sender_channel_identity_id = $2
+GROUP BY
+  r.id,
+  r.channel_type,
+  r.conversation_type,
+  r.external_conversation_id,
+  r.external_thread_id,
+  r.metadata
+ORDER BY MAX(m.created_at) DESC
+`
+
+type ListObservedConversationsByChannelIdentityParams struct {
+	BotID             pgtype.UUID `json:"bot_id"`
+	ChannelIdentityID pgtype.UUID `json:"channel_identity_id"`
+}
+
+type ListObservedConversationsByChannelIdentityRow struct {
+	RouteID          pgtype.UUID        `json:"route_id"`
+	Channel          string             `json:"channel"`
+	ConversationType string             `json:"conversation_type"`
+	ConversationID   string             `json:"conversation_id"`
+	ThreadID         string             `json:"thread_id"`
+	ConversationName string             `json:"conversation_name"`
+	LastObservedAt   pgtype.Timestamptz `json:"last_observed_at"`
+}
+
+func (q *Queries) ListObservedConversationsByChannelIdentity(ctx context.Context, arg ListObservedConversationsByChannelIdentityParams) ([]ListObservedConversationsByChannelIdentityRow, error) {
+	rows, err := q.db.Query(ctx, listObservedConversationsByChannelIdentity, arg.BotID, arg.ChannelIdentityID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []ListObservedConversationsByChannelIdentityRow
+	for rows.Next() {
+		var i ListObservedConversationsByChannelIdentityRow
+		if err := rows.Scan(
+			&i.RouteID,
+			&i.Channel,
+			&i.ConversationType,
+			&i.ConversationID,
+			&i.ThreadID,
+			&i.ConversationName,
+			&i.LastObservedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}