async onTurn()

in SDKV4-Samples/js/DialogPromptBot/bot.js [49:97]
35 lines of code
8 McCabe index (conditional complexity)

    async onTurn(turnContext) {
        switch (turnContext.activity.type) {
            case ActivityTypes.Message:
                // Get the current reservation info from state.
                const reservation = await this.reservationAccessor.get(turnContext, null);

                // Generate a dialog context for our dialog set.
                const dc = await this.dialogSet.createContext(turnContext);

                if (!dc.activeDialog) {
                    // If there is no active dialog, check whether we have a reservation yet.
                    if (!reservation) {
                        // If not, start the dialog.
                        await dc.beginDialog(RESERVATION_DIALOG);
                    }
                    else {
                        // Otherwise, send a status message.
                        await turnContext.sendActivity(
                            `We'll see you on ${reservation.date}.`);
                    }
                }
                else {
                    // Continue the dialog.
                    const dialogTurnResult = await dc.continueDialog();

                    // If the dialog completed this turn, record the reservation info.
                    if (dialogTurnResult.status === DialogTurnStatus.complete) {
                        await this.reservationAccessor.set(
                            turnContext,
                            dialogTurnResult.result);

                        // Send a confirmation message to the user.
                        await turnContext.sendActivity(
                            `Your party of ${dialogTurnResult.result.size} is ` +
                            `confirmed for ${dialogTurnResult.result.date} in ` +
                            `${dialogTurnResult.result.location}.`);
                    }
                }

                // Save the updated dialog state into the conversation state.
                await this.conversationState.saveChanges(turnContext, false);
                break;
            case ActivityTypes.EndOfConversation:
            case ActivityTypes.DeleteUserData:
                break;
            default:
                break;
        }
    }