botbuilder-dialogs-adaptive
Version:
Rule system for the Microsoft BotBuilder dialog system.
176 lines • 8.67 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SwitchCondition = void 0;
/**
* @module botbuilder-dialogs-adaptive
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
const converters_1 = require("../converters");
const actionScope_1 = require("./actionScope");
const case_1 = require("./case");
const adaptive_expressions_1 = require("adaptive-expressions");
const botbuilder_dialogs_1 = require("botbuilder-dialogs");
class CasesConverter {
convert(items) {
return items.map((item) => (item instanceof case_1.Case ? item : new case_1.Case(item.value, item.actions)));
}
}
/**
* Conditional branch with multiple cases.
*/
class SwitchCondition extends botbuilder_dialogs_1.Dialog {
/**
* Initializes a new instance of the [SwitchCondition](xref:botbuilder-dialogs-adaptive.SwitchCondition) class
*
* @param condition Optional. Condition expression against memory.
* @param defaultDialogs Optional. Default [Dialog](xref:botbuilder-dialogs.Dialog) array.
* @param cases Optional. Cases.
*/
constructor(condition, defaultDialogs, cases) {
super();
/**
* Default case.
*/
this.default = [];
/**
* Cases.
*/
this.cases = [];
if (condition) {
this.condition = new adaptive_expressions_1.ExpressionParser().parse(condition);
}
if (defaultDialogs) {
this.default = defaultDialogs;
}
if (cases) {
this.cases = cases;
}
}
/**
* @param property The key of the conditional selector configuration.
* @returns The converter for the selector configuration.
*/
getConverter(property) {
switch (property) {
case 'condition':
return new adaptive_expressions_1.ExpressionConverter();
case 'default':
return converters_1.DialogListConverter;
case 'cases':
return new CasesConverter();
case 'disabled':
return new adaptive_expressions_1.BoolExpressionConverter();
default:
return super.getConverter(property);
}
}
/**
* Gets the child [Dialog](xref:botbuilder-dialogs.Dialog) dependencies so they can be added to the containers [Dialog](xref:botbuilder-dialogs.Dialog) set.
*
* @returns The child [Dialog](xref:botbuilder-dialogs.Dialog) dependencies.
*/
getDependencies() {
let dialogs = [];
if (this.default) {
dialogs = dialogs.concat(this.defaultScope);
}
if (this.cases) {
dialogs = dialogs.concat(this.cases);
}
return dialogs;
}
/**
* Starts a new [Dialog](xref:botbuilder-dialogs.Dialog) and pushes it onto the dialog stack.
*
* @param dc The [DialogContext](xref:botbuilder-dialogs.DialogContext) for the current turn of conversation.
* @param _options Optional. Initial information to pass to the dialog.
* @returns A `Promise` representing the asynchronous operation.
*/
beginDialog(dc, _options) {
return __awaiter(this, void 0, void 0, function* () {
if (this.disabled && this.disabled.getValue(dc.state)) {
return yield dc.endDialog();
}
if (!this._caseExpresssions) {
this._caseExpresssions = new Map();
for (let i = 0; i < this.cases.length; i++) {
const caseScope = this.cases[i];
const intVal = parseInt(caseScope.value, 10);
if (!isNaN(intVal)) {
// you don't have to put quotes around numbers, "23" => 23 OR "23".
this._caseExpresssions.set(caseScope.value, adaptive_expressions_1.Expression.orExpression(adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(intVal)), adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(caseScope.value))));
continue;
}
const floatVal = parseFloat(caseScope.value);
if (!isNaN(floatVal)) {
// you don't have to put quotes around numbers, "23" => 23 OR "23".
this._caseExpresssions.set(caseScope.value, adaptive_expressions_1.Expression.orExpression(adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(floatVal)), adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(caseScope.value))));
continue;
}
const caseValue = caseScope.value.trim().toLowerCase();
if (caseValue === 'true') {
// you don't have to put quotes around bools, "true" => true OR "true".
this._caseExpresssions.set(caseScope.value, adaptive_expressions_1.Expression.orExpression(adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(true)), adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(caseScope.value))));
continue;
}
if (caseValue === 'false') {
// you don't have to put quotes around bools, "false" => false OR "false".
this._caseExpresssions.set(caseScope.value, adaptive_expressions_1.Expression.orExpression(adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(false)), adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(caseScope.value))));
continue;
}
// if someone does "=23" that will be numeric comparison or "='23'" that will be string comparison,
// or it can be a real expression bound to memory.
const { value } = new adaptive_expressions_1.ValueExpression(caseScope.value).tryGetValue(dc.state);
this._caseExpresssions.set(caseScope.value, adaptive_expressions_1.Expression.equalsExpression(this.condition, new adaptive_expressions_1.Constant(value)));
}
}
let actionScope = this.defaultScope;
for (let i = 0; i < this.cases.length; i++) {
const caseScope = this.cases[i];
const caseCondition = this._caseExpresssions.get(caseScope.value);
const { value, error } = caseCondition.tryEvaluate(dc.state);
if (error) {
throw new Error(`Expression evaluation resulted in an error. Expression: ${caseCondition.toString()}. Error: ${error}`);
}
if (value) {
actionScope = caseScope;
}
}
return yield dc.replaceDialog(actionScope.id);
});
}
/**
* @protected
* Gets the default scope.
* @returns An [ActionScope](xref:botbuilder-dialogs-adaptive.ActionScope) with the scope.
*/
get defaultScope() {
if (!this._defaultScope) {
this._defaultScope = new actionScope_1.ActionScope(this.default);
}
return this._defaultScope;
}
/**
* @protected
* Builds the compute Id for the [Dialog](xref:botbuilder-dialogs.Dialog).
* @returns A `string` representing the compute Id.
*/
onComputeId() {
return `SwitchCondition[${this.condition.toString()}]`;
}
}
exports.SwitchCondition = SwitchCondition;
SwitchCondition.$kind = 'Microsoft.SwitchCondition';
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